Real Time Touch



new TOP 200 Companies filing patents this week

new Companies with the Most Patent Filings (2010+)




Real Time Touch

Posco patents


Recent patent applications related to Posco. Posco is listed as an Agent/Assignee. Note: Posco may have other listings under different names/spellings. We're not affiliated with Posco, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "P" | Posco-related inventors


Zinc-plated steel sheet for hot pressing having outstanding surface characteristics, hot-pressed moulded parts obtained using the same, and a production method for the same

Provided is a method of manufacturing a zinc-plated steel sheet. The method includes: coating a metal on the steel sheet on a steel sheet; annealing the metal coated steel sheet; and zinc plating the annealed steel sheet by dipping in a molten zinc plating bath. ... Posco

Steel plate coloring device and coloring method

A steel plate coloring device according to an embodiment of the present invention may comprise: a body unit provided on a transfer path of steel plates; and an irradiation unit, provided on the body unit, for irradiating, on the surface of the steel plates, a laser in the form of a line with respect to the width direction of the steel plates so as to give color to the surface of the steel plates. In addition, a steel plate coloring method according to another embodiment of the present invention may comprise: a placement step for placing, on steel plates, an irradiation unit which irradiates a laser in the form of a line on a transfer path of a steel plate; and an irradiation step for irradiating the laser, at one time, on a region corresponding to the width of the steel plates which are continuously transferred.. ... Posco

Duplex stainless steel sheet having excellent corrosion resistance and method for manufacturing the same

Provided are a duplex stainless steel sheet having high surface quality and high corrosion resistance manufactured through a twin roll strip casting process, and a method for manufacturing the duplex stainless steel sheet.. . ... Posco

Ferritic stainless steel and method of manufacturing the same

Provided is a ferritic stainless steel and method of manufacturing the same. The ferritic stainless steel comprises, by weight percent, 0.02% or less of carbon (c), 0.02% or less of nitrogen (n), 1.0% or less of silicon (si), 1.20% or less of manganese (mn), 0.05% or less of phosphorus (p), 10.0 to 25.0% of chromium (cr), 0.5 to 2.0% of molybdenum (mo), 0.01 to 0.30% of titanium (ti), 0.30 to 0.70% of niobium (nb), and the remainder consisting of iron (fe) and other unavoidable impurities. ... Posco

Duplex stainless steel having excellent corrosion resistance and method for manufacturing the same

The present invention relates to a duplex stainless steel, and to a duplex stainless steel having excellent corrosion resistance and a method of manufacturing the same.. . ... Posco

Air knife

An air knife includes: a nozzle main body provided so as to inject gas in response to the width of the steel plate; a nozzle lip installed on at least one of the upper section and the lower section of an outlet of the nozzle main body and extending inclinedly so that the injection cross-sectional area of the gas becomes narrow; and at least one moment generation unit, provided at one side of the nozzle lip, for generating a rotation moment so that the nozzle lip is curved in the width direction of the steel plate and a gap between other nozzle lips varies.. . ... Posco

Hot rolled steel plate for oil well pipe, steel pipe using the same, and method of manufacturing the same

The present invention relates to a hot rolled steel plate used for an oil well pipe for development of petroleum or natural gas, a steel pipe manufactured using the same, and a method of manufacturing the same.. . ... Posco

Combustor

A combustor includes a combustion chamber including a grate and a combustion space formed above the grate; a fuel supply portion downwardly connected to a central portion of the grate to supply fuel to an upper portion of the grate; an air supply part connected to a side portion of the combustion chamber to be inclined on a horizontal plane, such that the combustion air rotates in the combustion space; a clinker collection portion downwardly communicating with a gap formed between an inner wall of the combustion chamber and the grate, to collect clinker generated by combustion of fuel in the clinker collection portion; and a reintroduction channel passing through the grate, such that the combustion air is reintroduced into the combustion space.. . ... Posco

Continuous casting and rolling method and continuous casting and rolling apparatus

Provided is a continuous casting and rolling method, which includes: a continuous casting operation of producing a slab; and a rolling operation of pressing the slab after a front end portion of the slab passes a first rolling stand into which the front end portion of the slab, which is provided as a continuous body to the slab produced in the continuous casting operation, initially enters.. . ... Posco

Hot-rolled steel sheet having excellent composite corrosion resistance to sulfuric acid and hydrochloric acid and manufacturing method therefor

Provided are a hot-rolled steel sheet having high composite corrosion resistance to sulfuric acid and hydrochloric acid, and a method for manufacturing the hot-rolled steel sheet. According to an aspect, the hot-rolled steel sheet having high composite corrosion resistance to sulfuric acid and hydrochloric acid includes, by wt %, carbon (c): 0.05% to 0.1%, manganese (mn): 0.5% to 1.5%, phosphorus (p): 0.02% or less, sulfur (s): 0.02% to less, aluminum (al): 0.01% to 0.1%, copper (cu): 0.2% to 0.6%, antimony (sb): 0.05% to 0.1%, and a balance of iron (fe) and inevitable impurities, wherein copper (cu) and antimony (sb) are concentrated in a region from a surface to a 500-nm position in a thickness direction of the hot-rolled steel sheet, and the hot-rolled steel sheet has a corrosion loss of 2.0 mg/cm2/hr or less in a solution of 16.9 volume % sulfuric acid and 0.35 volume % hydrochloric acid.. ... Posco

Reaction-type steam turbine

Embodiments of the present invention relate to a steam turbine in which unnecessary axial force is reduced. The steam turbine is capable of preventing a working fluid discharged from each nozzle-equipped rotary body from acting as resistance to the nozzle-equipped rotary bodies. ... Posco

Hot press formed article having good anti-delamination, and preparation method for same

Provided is a hot press formed article having good anti-delamination and having a hot dip aluminized layer formed on the surface of a base steel sheet. The base steel sheet comprises 0.18-0.25 wt % of c, 0.1-0.5 wt % of si, 0.9-1.5 wt % of mn, 0.03 wt % or less of p, 0.01 wt % or less of s, 0.01-0.05 wt % of al, 0.05-0.5 wt % of cr, 0.01-0.05 wt % of ti, 0.001-0.005 wt % of b, 0.009 wt % or less of n and the balance of fe and other impurities. ... Posco

High-strength thin steel sheet with excellent drawability and bake hardenability, and method for manufacturing same

A high-strength thin steel sheet having excellent drawability and bake hardenability, and a method of manufacturing the same are provided. The high-strength thin steel sheet includes 0.0005 to 0.003 wt % of carbon (c); 0.5 wt % or less (excluding 0 wt %) of silicon (si); 1.2 wt % or less (excluding 0 wt %) of manganese (mn); 0.005 to 0.12 wt % of phosphorous (p); 0.008 wt % or less of sulfur (s); 0.005 wt % or less of nitrogen (n); 0.1 wt % or less (excluding 0 wt %) of acid-soluable aluminum (al); 0.01 to 0.04 wt % of titanium (ti); iron (fe) as a remainder thereof; and unavoidable impurities. ... Posco

Solidification apparatus

Provided is a solidification apparatus that makes variations in the surface height of a molten metal relatively non-affected by the proceeding speed of a metal sheet to significantly increase the proceeding speed of the metal sheet and to increase the productivity of the metal sheet. The solidification apparatus for producing a metal sheet by solidifying molten metal includes rows of rollers arranged in a proceeding direction of the metal sheet, wherein when the rows of rollers are grouped into a plurality of sections, an average of roller pitches each being a distance between centers of rollers adjacent in the proceeding direction of the metal sheet is smaller in a given section than in a preceding section.. ... Posco

05/03/18 / #20180119263

High-strength hot-dip galvanized steel sheet having excellent plating surface quality and adhesion, and method of manufacturing the same

Provided is a method of manufacturing a hot-dip galvanized steel sheet. According to an aspect of the present invention, the method may include preparing a base steel sheet, forming a iron (fe)-plated layer on the prepared base steel sheet, oxidation heating the steel sheet having the fe-plated layer formed thereon at a temperature ranging from 600° c. ... Posco

03/15/18 / #20180073097

Steel for pipes having high fatigue resistance, method of manufacturing the same, and welded steel pipe using the same

Provided is a steel for pipes for use in applications such as oil or gas extraction. Particularly, there are provided a steel for pipes having high fatigue resistance, a method of manufacturing the steel, and a welded steel pipe obtained using the steel.. ... Posco

03/08/18 / #20180068769

Grain oriented electrical steel sheet having excellent core loss, and method for manufacturing same

The present invention relates to a grain oriented electrical steel sheet having excellent core loss and to a method for manufacturing same. The electrical steel sheet according to one aspect of the present invention may have a composition comprising, by weight %, si: 1.0 to 4.0%, al: 0.1 to 4.0%, and a rare earth element: 0.0001 to 0.5% by the total content of the whole rare earth element.. ... Posco

03/01/18 / #20180059630

Smart factory platform for processing data obtained in continuous process

Disclosed is a smart factory platform for processing data obtained in a continuous process including a first process and a second process following the first process. The smart factory platform includes a distributed parallel processing system including at least one processing unit that generates mapping data by mapping a process identification (id) to collection data collected from the continuous process and sorts the mapping data to generate sorting data, the process id defining a process where the collection data occurs and the sorting data being generated for association processing between pieces of collection data collected from different processes; and a big data analysis system storing the sorting data with respect to the process id.. ... Posco

01/25/18 / #20180023171

Steel sheet for warm press forming, warm-pressed member, and manufacturing methods thereof

Provided is a warm-pressed member comprising, by weight %, c: 0.01% to 0.5%, si: 3.0% or less (excluding 0%), mn: 3% to 15%, p: 0.0001% to 0.1%, s: 0.0001% to 0.03%, al: 3.0% or less (excluding 0%), n: 0.03% or less (excluding 0%), and the balance of fe and inevitable impurities. After a warm press forming process and a cooling process, the warm-pressed member has a microstructure comprising: 5 volume % to 50 volume % of retained austenite; and at least one of ferrite, martensite, tempered martensite, and bainite as a remainder.. ... Posco

01/25/18 / #20180021895

Field girth welding technology for high manganese steel slurry pipelines

The present disclosure relates to a welding composition for joining high manganese steel base metals and methods of applying the same. The composition includes: carbon in a range of about 0.4 wt % to about 0.8 wt %; manganese in a range of about 18 wt % to about 24 wt %; chromium in an amount of ≦about 6 wt %; molybdenum in an amount of ≦about 4 wt %; nickel in an amount of ≦about 5 wt %; silicon in an amount of about 0.4 wt % to about 1.0 wt %; sulfur in an amount of ≦about 200 ppm; phosphorus in an amount of ≦about 200 ppm; and a balance including iron. ... Posco

01/11/18 / #20180010225

Apparatus for removing top dross of plating pot

The present invention relates to an apparatus for removing top dross of a plating pot where a snout and an air knife are arranged, the snout being arranged between the front end region and the rear end region of a plating pot. The present invention provides an apparatus for removing top dross of a plating pot, the apparatus comprising: a first wiping means which is mounted on the plating pot and is arranged between the snout and the air knife so as to be movable in the width direction of the plating pot; a second wiping means which is mounted on the plating pot and is rotatably arranged between the air knife and the first wiping means so as to transfer, to the rear end region, the top dross transferred by the first wiping means; and a third wiping means which is mounted on the plating pot and is rotatably arranged between the air knife and the front end region so as to transfer the top dross to the front end region. ... Posco

01/11/18 / #20180010206

Grain-oriented electrical steel plate and production method therefor

Provided is an oriented electrical steel sheet including a groove existing on the surface of the electrical steel sheet and a forsterite layer formed on a part or all of the surface of the electrical steel sheet, in which forsterite which is extended from the forsterite layer and penetrates to a base steel sheet in an anchor form is present on the surface of the side of the groove.. . ... Posco

01/11/18 / #20180010202

Method for manufacturing reduced iron

Provided is a method for manufacturing reduced iron which includes the steps of: i) drying ores in an ore drier; ii) supplying the dried ores to at least one reduction reactor; iii) reducing the ores in the at least one reduction reactor and manufacturing reduced iron; iv) discharging exhaust gas by which the ores are reduced in the reduction reactor; v) branching the exhaust gas and providing the branched exhaust gas as ore feeding gas; and vi) exchanging heat between the exhaust gas and the ore feeding gas and transferring the sensible heat of the exhaust gas to the ore feeding gas. In the supplying the dried ores to the at least one reduction reactor, the dried ores are supplied to the at least one reduction reactor by using the ore feeding gas.. ... Posco

01/04/18 / #20180002797

Zinc alloy plated steel material having excellent weldability and processed-part corrosion resistance and method of manufacturing same

Zn alloy plated steel material having excellent weldability and processed-part corrosion resistance and a method for production of zn alloy plated steel material are provided. In the zn alloy plated steel material comprising base steel material and a zn alloy plating layer, the zn alloy plating layer includes, by wt %, al: 0.1-5.0%, mg: 0.1-5.0%, as well as a remainder of zn and inevitable impurities. ... Posco

01/04/18 / #20180002790

High strength galvanized steel sheet having excellent surface qualities, plating adhesion, and formability, and method for manufacturing same

A high strength galvanized steel sheet having excellent surface qualities, plating adhesion, and formability is provided, wherein a galvanized layer is formed on a cold-rolled steel sheet comprising 0.1-0.3 wt % of c, 1-2.5 wt % of si, 2.5-8 wt % of mn, 0.001-0.5 wt % of sol. Al, at most 0.04 wt % of p, at most 0.015 wt % of s, at most 0.02 wt % of n (excluding 0 wt %), 0.1-0.7 wt % of cr, at most 0.1 wt % of mo, (48/14)*[n] to 0.1 wt % of ti, 0.005-0.5 wt % of ni, 0.01-0.07 wt % of sb, at most 0.1 wt % of nb, and at most 0.005 wt % of b, with the remainder being fe and other inevitable impurities.. ... Posco

01/04/18 / #20180002775

Heat treatable steel, product formed thereof having ultra high strength and excellent durability, and method for manufacturing same

The present invention relates to a formed product used in vehicle components and the like, and to a method for manufacturing the same. The present invention provides heat treatable steel, a formed product using the same having ultra-high strength and excellent durability, and a method for manufacturing the same, wherein the heat treatable steel contains, in wt %, c (0.22-0.42%), si (0.05-0.3%), mn (1.0-1.5%), al (0.01-0.1%), p (0.01% or less (including 0), s (0.005% or less), mo (0.05-0.3%), ti (0.01-0.1%), cr (0.05-0.5%), b (0.0005-0.005%), n (0.01% or less), the balance fe, and other inevitable impurities, mn and si satisfying relationship formula (1), below, mo/p satisfying relationship formula (2), below: [relationship formula 1] mn/si≧5 [relationship formula 2] mo/p≧15.. ... Posco

01/04/18 / #20180002772

Grain-oriented electrical steel sheet and manufacturing method therefor

A method for manufacturing a grain-oriented electrical steel sheet, according to an embodiment of the present invention includes: heating a slab, based on 100 wt % of a total composition thereof, including n at 0.0005 wt % to 0.015 wt %, ti at 0.0001 wt % to 0.020 wt %, v at 0.0001 wt % to 0.020 wt %, nb at 0.0001 wt % to 0.020 wt %, b at 0.0001 wt % to 0.020 wt %, and the remaining portion including fe and other impurities, and then hot rolling it to prepare a hot-rolled steel sheet; annealing the hot-rolled steel sheet; after the hot-rolled steel sheet is annealed, cooling the hot-rolled steel sheet, and then cold rolling it to prepare a cold-rolled steel sheet; decarburization-annealing the cold-rolled steel sheet and then nitriding-annealing it, or simultaneously performing the decarburization-annealing and the nitriding-annealing; and final-annealing the decarburization-annealed and nitriding-annealed steel sheet.. . ... Posco

01/04/18 / #20180002771

High-strength cold rolled steel sheet with low material non-uniformity and excellent formability, hot dipped galvanized steel sheet, and manufacturing method therefor

A high-strength cold-rolled steel sheet and a hot-dipped galvanized steel sheet with low deviation of material properties and excellent formability, and a method for manufacturing same are provided. The present invention relates to a low-yield-ratio high-strength cold-rolled steel sheet with low deviation of directional material and excellent formability, comprising 0.05-0.15 wt % of c, 0.2-1.5 wt % of si, 2.2-3.0 wt % of mn, 0.001-0.10 wt % of p, 0.010 wt % or less of s, 0.01-0.10 wt % of sol.al, 0.010 wt % or less of n, and the balance of fe and impurities, satisfying si/(mn+si)≦0.5, wherein the microstructure of the steel sheet includes 40% or more of ferrite, 10% or less of bainite, 3% or less of residual austenite, and a balance of martensite, and the area fraction of a mn band present in the martensite phase is 5% or less.. ... Posco

12/28/17 / #20170369974

Ultra-high strength, hot-dip galvanized steel sheet having excellent surface quality and coating adhesion, and method for manufacturing thereof

The present invention relates to an ultra-high strength, hot-dip galvanized steel sheet having excellent surface quality and coating adherence and to a method for manufacturing thereof, the ultra-high strength, hot-dip galvanized steel sheet comprising: 0.1-0.3% by weight carbon (c); 0.1-2.0% by weight silicon (si); 0.005-1.5% by weight aluminum (al); 1.5-3.5% by weight manganese (mn); 0.04% by weight or less phosphorus (p) (excluding 0% by weight); 0.015% by weight or less sulphur (s) (excluding 0% by weight); 0.02% by weight or less nitrogen (n) (excluding 0% by weight); the balance being fe; and other inevitable impurities, and further comprising 0.01 wt.% to 0.07 wt.% of at least one kind of element selected from the group consisting of bismuth (bi), tin (sn) and antimony (sb).. . ... Posco

12/28/17 / #20170369960

Grain-oriented electrical steel plate and manufacturing method thereof

A grain-oriented electrical steel plate of an exemplary embodiment of the present invention has a groove formed on a surface, wherein a curvature radius rbb at a position where a depth of the groove is maximum is 0.2 μm to 100 μm, and a curvature radius rsb on the groove surface from the position where the depth of the groove is maximum to a quarter-way position of the depth d of the groove is 4 μm to 130 μm.. . ... Posco

12/28/17 / #20170369959

Oriented electrical steel sheet with excellent magnetic properties and method for manufacturing same

The present invention relates to a method of manufacturing a directional electric steel plate having excellent surface wettability and magnetic properties. More particularly, the present invention relates to a directional electric steel plate in which a surface of a steel plate consisting of si: 2.0 to 6.5%, acid soluble al: 0.4 to 5%, mn: 0.20% or less (0% exclusive), n: 0.010% or less (0% exclusive), s: 0.010% or less (0% exclusive), p: 0.005 to 0.05%, c: 0.04 to 0.12% and a balance of fe and other unavoidable impurities is hot-dip plated with aluminum or an aluminum-silicon alloy, and heat-treated, so that aluminum on the hot-dip plated layer is diffused or infiltrated into the steel plate, and a method of manufacturing the same.. ... Posco

12/21/17 / #20170365881

Nanicl battery and module using same

A nanicl battery and a module using the same are provided. A nanicl battery according to the present invention include: a case that forms an exterior shape of the battery; and a beta alumina solid electrolyte (base) tube that is provided in the case and having a clover-shaped cross-section, wherein the case has a clover-shaped cross-section like the clover-shaped cross-section of the base tube to minimize a space between the case and the base tube.. ... Posco

12/21/17 / #20170362729

Fe-p-cr alloy thin plate and method for manufacturing same

The present invention relates to an fe—p—cr alloy thin plate and a method for manufacturing the same. An embodiment of the present invention provides an fe—p—cr alloy thin plate including, in terms of wt %, p (6.0-13.0%), cr (0.002-0.1%), and the balance of fe and other inevitable impurities.. ... Posco

12/21/17 / #20170362677

Non-oriented electrical steel sheet and manufacturing method therefor

A non-oriented electrical steel sheet according to an embodiment of the present invention includes ti at 0.0030 wt % or less (excluding 0 wt %), nb at 0.0035 wt % or less (excluding 0 wt %), v at 0.0040 wt % or less (excluding 0 wt %), b at 0.0003 wt % to 0.0020 wt %, and the remaining portion including fe and other inevitably added impurities, wherein a value of ([ti]+0.8[nb]+0.5[v])/(10*[b]) may be 0.17 to 7.8.. . ... Posco

12/21/17 / #20170362676

Non-oriented electrical steel sheet and method for manufacturing the same

A method for manufacturing a non-oriented electrical steel sheet according to an exemplary embodiment of the present invention includes performing hot rolling on a slab after heating the slab to manufacture a hot rolled sheet; performing hot rolled sheet annealing on the hot rolled sheet; performing cold rolling on a steel sheet on which the hot rolled sheet annealing is completed to manufacture a cold rolled sheet; and performing cold rolled sheet annealing on the cold rolled sheet in which a difference between a cold rolled sheet annealing temperature in the cold rolled sheet annealing and a hot rolled sheet annealing temperature in the hot rolled sheet annealing is 100° c. Or lower.. ... Posco

12/21/17 / #20170362675

Steel for low-temperature service having excellent surface processing quality and method for manufacturing same

Provided is a steel sheet for low-temperature service, which can be used at a wide temperature range from low temperature to room temperature in liquefied gas storage tanks and transport facilities. The steel sheet for low-temperature service has an excellent surface processing quality even after a processing processes is performed, such as a tension process. ... Posco

12/14/17 / #20170354991

Method for manufacturing transparent pattern print steel plate

A method of manufacturing a transparent pattern printed steel plate includes forming a printed paint film layer by jetting transparent ink onto at least one surface of a steel plate, and curing the printed paint film layer with ultraviolet light to form a cured printed paint film layer. Further, a method of manufacturing a transparent pattern printed steel plate includes preparing a steel plate having a color painted film layer formed on at least one surface thereof, forming a printed paint film layer by jetting transparent ink onto the color painted film layer, and curing the printed paint film layer to form a cured printed paint film layer.. ... Posco

12/07/17 / #20170350029

Plated steel sheet having excellent adhesion property and manufacturing method therefor

. . The present invention relates to a plated steel sheet, which can be used for vehicles, home appliances, construction materials and the like, and to a method for manufacturing the plated steel sheet.. . ... Posco

12/07/17 / #20170348802

Method for forming groove in surface of steel plate, and apparatus therefor

Disclosed herein are a method and a device for forming a groove in a surface of a steel sheet. In the method for forming a groove in a surface of a steel sheet, in order to form grooves at a depth of 10% or less of a thickness of the steel sheet in the surface of the steel sheet by irradiating a laser beam, in the case in which laser beams are irradiated from a plurality of laser oscillators to a scan mirror, pass through the scan mirror, and are then irradiated to the surface of the steel sheet, two or more laser beams share one scan mirror with each other to minimize a thermal influence of groove portions at a high line speed of 20 mpm or more, thereby accomplishing iron loss improvement characteristics before (after) heat treatment.. ... Posco

11/30/17 / #20170342726

Building material

Provided is a building material that is disposed between an inter-floor separation layer configured to separate floors of a building having a plurality of floors from each other and a bottom layer disposed above the inter-floor separation layer. The building material includes a support member disposed between the inter-floor separation layer and the bottom layer, having a top surface of which at least a portion contacts the bottom layer, and including a protruding portion protruding downward, extending in at least one direction, and having an inner space and a plurality of damping members disposed between the inter-floor separation layer and the support member and each of which has a lower plate contacting a portion of the inter-floor separation layer and an upper plate contacting a portion of the support member to allow the inter-floor separation layer to be spaced apart from the support member.. ... Posco

11/30/17 / #20170342581

Fe-ni alloy metal foil having excellent heat resilience and method for manufacturing same

An aspect of the present invention provides an fe—ni alloy metal foil having excellent heat resilience, where the fe—ni alloy metal foil is prepared by an electroforming (ef) method and has a thickness of 100 μm or less (except o μm), wherein the fe—ni alloy metal foil comprises, by wt %, ni: 34-46 %, a remainder of fe and inevitable impurities, and wherein the fe—ni metal foil has a degree of heat resilience in an amount of 30 ppm or less.. . ... Posco

11/30/17 / #20170342534

Austenitic-based stainless steel for fuel cell

Provided is an austenitic stainless steel for a fuel cell including, in weight %, c: 0.05% to 0.09%, si: 0.5% or less (0 excluded), mn: 2.5% to 5.0%, cr: 21% to 23%, ni: 10% to 12%, nb: 0.2% to 0.7%, n: 0.25% or less (0 excluded), al: 0.2% or less (0 excluded), s: 0.003% or less (0 excluded), b: 0.01% or less (0 excluded), the remainder being fe and unavoidable impurities.. . ... Posco

11/30/17 / #20170342532

Ferritic stainless steel

Provided is a ferritic stainless steel including, as a ferritic stainless steel used in a separator for a fuel cell, a base material including, in weight %, c: 0.003% to 0.012%, n: 0.003% to 0.015%, si: 0.05% to 0.15%, mn: 0.3% to 0.8%, cr: 20% to 24%, mo; 0.1% to 0.4%, nb: 0.1% to 0.7%, ti: 0.03% to 0.1%, and the remainder being fe and inevitable impurities. A first scale layer including chromium oxide is formed on a surface of the base material, and a second scale layer including chromium oxide and manganese oxide is formed on a surface of the first scale layer. ... Posco

11/30/17 / #20170342529

Hot-rolled steel sheet for high strength galvanized steel sheet, having excellent surface quality, and method for producing same

The present invention relates to a hot-rolled steel sheet for a high strength galvanized steel sheet, having excellent surface quality, and a method for producing the same, the hot-rolled steel sheet comprising, by weight %: c: 0.08 to 0.2%, si: 0.03 to 0.15%, mn: 1.4 to 2%, p: 0.001 to 0.05%, s: 0.001 to 0.03%, al: 0.002 to 0.05%, and the remainder being fe and unavoidable impurities. The weight ratio of mn/si is 20 to 30, the weight ratio of c/si is 1 to 5, and the weight ratio of si/p is 3 to 10. ... Posco

11/30/17 / #20170342522

Hot-rolled steel sheet for high strength galvanized steel sheet, having excellent surface quality, and method for producing same

The present invention relates to a hot-rolled steel sheet for a high strength galvanized steel sheet, having excellent surface quality, and a method for producing the same, the hot-rolled steel sheet comprising, by weight %: c: 0.05 to 0.15%, si: 0.03 to 0.10%, mn: 0.7 to 1.39%, p: 0.001 to 0.05%, s: 0.001 to 0.03%, al: 0.002 to 0.035%, and the remainder being fe and unavoidable impurities. The weight ratio of mn/si is 15 to 25, the weight ratio of c/si is 1 to 5, and the weight ratio of si/p is 3 to 10. ... Posco

11/30/17 / #20170342518

Structural ultra-thick steel having excellent resistance to brittle crack propagation, and production method therefor

Provided are structural ultra-thick steel having excellent resistance to brittle crack propagation and a production method therefor. The structural ultra-thick steel comprises 0.02-0.1 wt % of c, 0.8-2.5 wt % of mn, 0.05-1.5 wt % of ni, 0.005-0.1 wt % of nb, and 0.005-0.1 wt % of ti with the remainder being fe and other inevitable impurities, and has microstructures including one structure selected from the group consisting of a single-phase structure of ferrite, a single-phase structure of bainite, a complex-phase structure of ferrite and bainite, a complex-phase structure of ferrite and pearlite, and a complex-phase structure of ferrite, bainite, and pearlite. ... Posco

11/30/17 / #20170342326

Method and apparatus for manufacturing cokes additive

Provided is a method and apparatus for manufacturing a cokes additive, which is optimized for extraction of a cokes additive and can easily and effectively manufacture the additive, the method comprising: a coal pre-processing step for bringing coal into slurry by dispersing the coal in a solvent; a step for introducing a dispersed iron catalyst while pre-processing the coal; a coal liquefying step for liquefying the coal slurry by reacting the coal slurry with a cracking gas; a step for supplying a cog and/or an lng as the cracking gas in the coal liquefying step; a separation step for separating an additive from the liquefied product; and a recycling step for supplying liquid oil obtained in the separation step to the coal pre-processing step and using the liquid oil as the solvent.. . ... Posco

11/23/17 / #20170335439

Wire rod having enhanced strength and impact toughness and preparation method for same

Provided is a wire rod having enhanced strength and impact toughness. The wire rod includes, by wt %, carbon (c): 0.05% to 0.15%, silicon (si): 0.2% or less, manganese (mn): more than 3.5% to 5.0% or less, chromium (cr): 0.5% to 2.0%, phosphorus (p): 0.020% or less, sulfur (s):0.020% or less, aluminum (al): 0.010% to 0.050%, iron (fe) as a residual component, and inevitable impurities. ... Posco

11/23/17 / #20170335425

Grain-oriented electrical steel sheet and manufacturing method of grain-oriented electrical steel sheet

An oriented electrical steel sheet includes ba at about 0.005 wt % to about 0.5 wt % inclusive, y at about 0.005 wt % to about 0.5 wt % inclusive, or a composite of ba and y at about 0.005 wt % to about 0.5 wt % inclusive, the remainder including fe and impurities, based on 100 wt % of a total composition of a base steel sheet thereof.. . ... Posco

11/23/17 / #20170335424

High-strength steel having superior brittle crack arrestability, and production method therefor

Provided are high-strength steel having superior brittle crack arrestability and a production method therefor. The structural ultra-thick steel comprises 0.05-0.1 wt % of c, 0.9-1.5 wt % of mn, 0.8-1.5 wt % of ni, 0.005-0.1 wt % of nb, 0.005-0.1 wt % of ti, 0.1-0.6 wt % of cu, 0.1-0.4 wt % of si, at most 100 ppm of p, and at most 40 ppm of s with the remainder being fe and other inevitable impurities, has microstructures including one structure selected from the group consisting of a single-phase structure of ferrite, a single-phase structure of bainite, a complex-phase structure of ferrite and bainite, a complex-phase structure of ferrite and pearlite, and a complex-phase structure of ferrite, bainite, and pearlite, and has a thickness of at least 50 mm. ... Posco

11/23/17 / #20170335420

Lean duplex stainless steel having superb drawing property and method for producing same

Provided are lean duplex stainless steel in which delayed fracture does not occur and thus a drawing property is improved, and a method for producing the lean duplex stainless steel. The lean duplex stainless steel having a superb drawing property according to the present disclosure includes, in weight %, c: 0.02% to 0.08%, si: 0.5% to 1.3%, mn: 2.5% to 3.5%, cr: 19% to 21%, ni: 0.6% to 1.2%, n: 0.2% to 0.3%, cu: 0.5% to 1.2%, and the remainder of fe and other inevitable impurities, and, as annealed dual-phase steel of ferrite and austenite, md_sim10 corresponding to a temperature measured when an amount of strain-induced martensite formed after 0.3 true strain reaches 10%, and a limit drawing ratio (ldr) satisfy the expressions below. ... Posco

11/16/17 / #20170331344

Module for cooling heating element and motor including same

The present invention relates to a module for cooling a heating element and a motor including the same. The module for cooling the heating element, according to the present invention, can comprise: a flat plate-shaped heat pipe containing working fluid therein, coming into close contact with the heating element, and including a condensation region which does not come into contact with the heating element; and a cooling channel connected to the condensation region, and cooling the heat pipe by a refrigerant.. ... Posco

11/16/17 / #20170328240

Turbine power generation system having emergency operation means, and emergency operation method therefor

Discloses is a turbine power generation system having an emergency operation means and an emergency operation method therefor that are capable of controlling excess heat accumulated during emergency operation, and recycling the accumulated heat. A turbine power generation system includes: an inlet sensor part including a thermometer, a pressure gauge, and a flowmeter that are installed between the heater and the inlet valve and; an emergency discharge part including a branch pipe connected to the steam, and a heat control means installed on the branch pipe. ... Posco

11/16/17 / #20170327923

Super duplex stainless steel having excellent yield strength and impact toughness and menufacturing method therefor

Provided is super duplex stainless steel having excellent yield strength and impact toughness, wherein a reduction ratio and a heat treatment temperature are controlled so as to improve mechanical properties. The super duplex stainless steel having excellent yield strength and impact toughness is thick super duplex stainless steel having a thickness of 30 mm or greater, and includes, in weight %, cr: 24% to 26%, ni: 6.0% to 8.0%, mo: 3.5% to 5.0%, n: 0.24% to 0.32%, and the remainder being fe and inevitable impurities, wherein a microstructure includes a ferrite phase, an austenite phase and a secondary austenite phase, and grain size is 25 μm or less.. ... Posco

11/16/17 / #20170327922

High-strength steel having superior brittle crack arrestability, and production method therefor

Provided are high-strength steel having superior brittle crack arrestability and a production method therefor. The high-strength steel comprises 0.05-0.1 wt % of c, 0.9-1.5 wt % of mn, 0.8-1.5 wt % of ni, 0.005-0.1 wt % of nb, 0.005-0.1 wt % of ti, 0.1-0.6 wt % of cu, 0.1-0.4 wt % of si, at most 100 ppm of p, and at most 40 ppm of s with the remainder being fe and other inevitable impurities, and has microstructures including one structure selected from the group consisting of a single-phase structure of ferrite, a single-phase structure of bainite, a complex-phase structure of ferrite and bainite, a complex-phase structure of ferrite and pearlite, and a complex-phase structure of ferrite, bainite, and pearlite. ... Posco

11/16/17 / #20170327916

High-hardness martensitic stainless steel with excellent antibacterial property and preparation method therefor

A high-hardness martensitic stainless steel with excellent antibacterial property and a preparation method therefor are disclosed. The high-hardness martensitic stainless steel with excellent antibacterial property comprises: 0.45-0.65 wt % of c; 0.02-0.06 wt % of n; 0.1-0.6 wt % of si; 0.3-1.0 wt % of mn; 0.1-0.4 wt % of ni; 13-14.5 wt % of cr; 0.4-0.6 wt % of mo; 0.8-1.2 wt % of w; 1.5-2.0 wt % of cu; and the balance of fe and inevitable impurities. ... Posco

11/16/17 / #20170327153

Pillar member and roll formed member of vehicle

The present invention provides a pillar member of a vehicle, which is characterized by comprising: a pillar main body portion; and a connecting and joining portion provided on both ends of the pillar main body portion and coupled to a vehicle body. The pillar main body portion and the connecting and joining portion are consecutively formed. ... Posco

11/16/17 / #20170326628

Lean duplex stainless steel and method for producing the same

Provided are lean duplex stainless steel having a dual-phase structure of an austenite phase and a ferrite phase, and a method for producing the lean duplex stainless steel. The lean duplex stainless steel, as a ferrite-austenite stainless steel, has the preferred stacking fault energy (sfe) value of the austenite phase, expressed by the formula 2 below, of 19-37 and critical strain value range, within which the strain-induced martensite phases occurs, of 0.1−0.25. ... Posco

11/16/17 / #20170326626

Meniscus flow control device and meniscus flow control method using same

Provided is a meniscus flow control device includes: a meniscus flow detection unit for detecting, in a meniscus flow form of molten steel, relative temperature values for positions measured by temperature measurers, and relatively comparing the temperature values measured by the temperature measurers to thereby determine the flow state of the molten steel meniscus to be normal or abnormal; a magnetic field generation unit, installed outside a mold, for generating a magnetic field and controlling the flow of the molten steel by the magnetic field; and a flow control unit for maintaining the operation of the magnetic field generation unit in the current state when the meniscus flow state detected by the meniscus flow detection unit is determined to be normal, and for controlling the magnetic field generation unit to adjust the meniscus flow to be normal when the detected meniscus flow state is determined to be abnormal.. . ... Posco

10/26/17 / #20170306438

Dual-phase steel sheet with excellent formability and manufacturing method therefor

The present invention relates to a high-strength steel sheet and, more specifically, to a dual-phase steel sheet having excellent formability, so as to be appropriately applied to vehicle panels and the like, and a manufacturing method therefor.. . ... Posco

10/05/17 / #20170283902

Hot dip galvanized and galvannealed steel sheet having excellent elongation properties

There is provided a hot-dip galvanized steel sheet and a hot-dip galvannealed steel sheet, which have excellent elongation properties, and methods for manufacturing the hot-dip galvanized steel sheet and the hot-dip galvannealed steel sheet. The present disclosure relates to a hot-dip galvanized steel sheet in which a hot-dip galvanized layer is formed on a surface of abase steel sheet, the hot-dip galvanized steel sheet having excellent elongation properties and being characterized by the composition and the microstructure thereof.. ... Posco

10/05/17 / #20170283894

Ferritic stainless steel having excellent ductility and method for manufacturing same

Ferritic stainless steel having a high degree of ductility and a method for manufacturing the ferritic stainless steel are provided. The stainless steel includes, by wt %, c: 0.005% to 0.1%, si: 0.01% to 2.0%, mn: 0.01% to 1.5%, p: 0.05% or less, s: 0.005% or less, cr: 10% to 30%, ti: 0.005% to 0.5%, al: 0.01% to 0.15%, n: 0.005% to 0.03%, and the balance of fe and inevitable impurities, wherein the ferritic stainless steel includes 3.5×106 or fewer particles of an independent ti(cn) precipitate per square millimeter (mm2) of ferrite matrix.. ... Posco

09/21/17 / #20170271061

Grain-oriented electrical steel sheet and manufacturing method therefor

Disclosed are an oriented electrical steel sheet and a manufacturing method thereof. An exemplary embodiment of the present invention provides a method of manufacturing an oriented electrical steel sheet, including: providing a slab including si at 1.0 to 4.0 wt %, c at 0.1 to 0.4 wt %, and the remaining portion including fe and other inevitably incorporated impurities; reheating the slab; producing a hot rolled steel sheet by hot rolling the slab; performing annealing of the hot rolled steel sheet; cold rolling the annealed hot rolled steel sheet; decarburizing and annealing the cold rolled steel sheet; cold rolling the decarburized and annealed steel sheet; and final annealing the cold rolled steel sheet.. ... Posco

09/14/17 / #20170260602

Complex-phase steel sheet having excellent formability and method of manufacturing the same

A high strength steel sheet mainly used as an automotive exterior panel material is provided. In detail, a complex-phase steel sheet having excellent formability and a method of manufacturing the same are provided. ... Posco

09/07/17 / #20170253942

Magnetic domain refinement method for grain-oriented electrical steel sheet, magnetic domain refinement apparatus, and grain-oriented electrical steel sheet manufactured by means of same

Disclosed is a magnetic domain refining method for radiating a laser beam to a surface of a directional electrical steel plate at intervals, which is capable of further reducing noise along with an iron loss reduction effect and further improving iron loss and noise reduction effects in an area where the directional electrical steel plate are bonded together, such as the joint part of the iron core of a transformer. Irradiated radiations formed by a laser beam in at least any one area of the directional electrical steel plate are unfolded in a fan rib form using one point of the directional electrical steel plate as a central point.. ... Posco

08/17/17 / #20170233871

Pre-coating agent composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet comprising same, and manufacturing method therefor

A pre-coating agent composition for a grain-oriednted electrical steel sheet, a grain-oriednted electrical steel sheet including the same, and a manufacturing method thereof are provided. Particularly, a pre-coating agent composition for a grain-oriednted electrical steel sheet including an acid containing boron (b); and a solvent, a grain-oriednted electrical steel sheet including the same, and a manufacturing method thereof are provided.. ... Posco

07/27/17 / #20170214300

Bonded type laminated-core member manufacturing apparatus and adhesive applying unit for the same

Disclosed herein is a bonded type laminated-core member manufacturing apparatus comprising an adhesive applying unit which is selectively open for applying an adhesive to a material being continuously transferred, and a blanking unit sequentially forming laminar members having a predetermined shape by blanking the material, wherein the adhesive applying unit includes an adhesive applicator having an outlet channel for discharging the adhesive, and a valve closing the outlet channel and opening the outlet channel for discharging the adhesive when the material and the outlet channel come close to each other. Since an outlet of a nozzle is opened only when a material approaches an adhesive applying unit and close when the material separates from the adhesive applying unit, leakage of the adhesive prevent can be prevented and the discharge time and the application amount of the adhesive may be regularly controlled.. ... Posco

07/13/17 / #20170201163

Laminate unit for manufacturing bonded-type laminated core member and apparatus having the same for manufacturing laminated core member

Disclosed herein is a bonded-type laminated core member manufacturing apparatus including an adhesive application unit to apply an adhesive to a material being continuously transferred, and a laminating unit configured to integrate laminar members laminated within a laminating hole by blanking the material, a laminated core member being manufactured by interlayer adhesion between the laminar members, and the laminating unit includes an adhesive hardener to harden the adhesive located between the laminar members so as to integrate the laminar members passing through the laminating hole, and pinchers provided under the adhesive hardener to apply lateral pressure to the laminated core member so as to prevent falling of the laminated core member. Since the laminated core members may be stably extracted, damage to the laminated core member due to falling may be prevented and the laminated core members in an aligned state may be extracted.. ... Posco

06/22/17 / #20170179502

Heat recovery apparatus based on fuel cell and operating method thereof

Provided are a heat recovery apparatus based on a fuel cell and an operating method thereof. In the fuel cell-based heat recovery apparatus and the operating method thereof, hot water and steam may be generated by using heat generated while a molten carbonate fuel cell (mcfc) operates to supply the generated hot water or steam to buildings, thereby reducing a rate of operation in cooling/heating equipment using electricity so as to reduce air-conditioning costs.. ... Posco

06/22/17 / #20170175236

Induction heatable stainless steel sheet having excellent corrosion resistance and method of manufacturing the same

A stainless steel sheet for cookware and a method of manufacturing the same and, particularly, an induction heatable stainless steel sheet having excellent corrosion resistance and a method of manufacturing the same are provided. The induction heatable stainless steel sheet having excellent corrosion resistance includes, by wt %, c: 0.1% or less (excepting 0%), si: 0.2% to 3.0%, mn: 1.0% to 4.0%, cr: 19.0% to 23.0%, ni: 0.3% to 2.5%, n: 0.18% to 0.3%, cu: 0.3% to 2.5%, iron (fe) as a residual component thereof, and other unavoidable impurities, and has relative permeability of 20μr to 80μr. ... Posco

06/22/17 / #20170175212

Argon oxygen decarburization refining method for molten austenitic stainless steel

An argon oxygen decarburization (aod) refining method for molten austenitic stainless steel includes, preparing molten austenitic stainless steel in an electric arc furnace, pouring the molten austenitic stainless steel into an aod refining furnace by adjusting a carbon concentration of the molten austenitic stainless steel to 2.0 wt % to 2.5 wt %, decarburizing the poured molten austenitic stainless steel by blowing oxygen (o2) and argon (ar) thereinto, and reduction-decarburizing the decarburized molten austenitic stainless steel by blowing argon (ar) thereinto.. . ... Posco

06/22/17 / #20170173676

Edge dam of twin roll type strip caster

An edge dam of a twin roll type strip caster is provided as a refractory material having a sealing member for sealing both end surfaces of a pair of casting rolls, and is pressed and raised according to wear of the sealing member. To uniformly maintain a contact area of the sealing member and the casting roll in a process in which the edge dam is moved while the edge dam is pressed and raised, both sides and a lower part of the sealing member are formed as an inclined surface inclined inwardly of the sealing member. ... Posco

06/15/17 / #20170165744

Metal fiber manufacturing system

The present invention relates to a metal fiber manufacturing system. The system casts molten metal as a metal fiber; collects the metal fiber in real time; transfers the metal fiber; separates normal products from defective products; and packages a predetermined amount of the normal product metal fiber. ... Posco

05/18/17 / #20170138511

Expandable high-strength steel material and expanded high-strength steel pipe having superior expandability and collapse resistance, and methods for manufacturing thereof

There are provided an expandable high-strength steel material and an expanded high-strength steel pipe having excellent expandability and collapse resistance, and methods for manufacturing the expandable high-strength steel material and the expanded high-strength steel pipe. The expandable high-strength steel material including, by weight, manganese (mn): 12% to 18%, carbon (c): 0.3% to 0.6%, and a balance of iron (fe) and inevitable impurities, wherein the carbon (c) and the manganese (mn) satisfy the following condition: 23≦35.5c+mn≦38. ... Posco

05/18/17 / #20170136756

Apparatus for manufacturing bonded-type laminated core member using high-frequency heating and laminate unit for the same

Disclosed herein is a bonded-type laminated core member manufacturing apparatus comprising an adhesive application unit to apply an adhesive to a material being continuously transferred, and a laminating unit to integrate laminar members laminated within a laminating hole by blanking the material, a laminated core member being manufactured by interlayer adhesion between the laminar members, wherein the laminating unit includes a high-frequency heater to harden the adhesive located between the laminar members, the high-frequency heater including a coil wound on the circumference of a hardening hole which accommodates the laminar members and forming a passage of high-frequency current. In accordance with the present invention, the adhesive is rapidly hardened by high-frequency induction heating and thus the integration time of the laminated core member is shortened, and accuracy of the laminating unit, which integrates the laminar members, i.e., straightness of the laminating hole to pass the laminar members, is stably maintained and, thus, misalignment of the laminated core members is prevented and management of product quality is facilitated.. ... Posco

05/11/17 / #20170129004

Surface treatment method and casting roll manufactured by the same

A surface treatment method capable of preventing a surface defect by improving a surface shape determining surface roughness of a casting roll and a casting roll manufactured by the surface treatment method, are provided. A surface treatment method includes a concave-convex pattern forming operation of forming a concave-convex pattern on a surface of a casting roll; and an electrolytic polishing operation of electrolytically polishing so that a plurality of convex portions and concave portions of a concave-convex pattern formed in the concave-convex pattern forming operation are treated to be rounded.. ... Posco

05/11/17 / #20170129003

Twin-roll strip caster and casting method using same

A twin-roll strip caster includes: a pair of casting rolls rotating in opposite directions to each other, and having an edge dam adhering to both end surfaces of the casting rolls in a length direction of the casting rolls; a submerged nozzle discharging molten steel between the pair of casting rolls; a meniscus shield disposed above the molten steel supplied through the submerged nozzle to prevent the molten steel from contacting air; and a focused gas supply nozzle disposed between the submerged nozzle and the meniscus shield to supply inert gas therebetween so as to displace air between the submerged nozzle and the meniscus shield before the molten steel is supplied.. . ... Posco

04/27/17 / #20170113299

Apparatus and method for treating surface of strip casting twin roll

An apparatus for treating a surface of a strip casting twin roll includes: a laser machining unit configured to form dimple patterns on a surface of a rotating casting roll using a laser; a machining region processing unit, wherein if the casting roll is rotated by a critical angle, the machining region processing unit calculates a size and a position of a machining region, in which a dimple pattern will be formed, based on image information obtained by imaging the machining region; and a laser beam absorbing unit, wherein if the size of the machining region is smaller than a size of the dimple pattern, the laser beam absorbing unit places a screen at an overlap start position from which the machining region and the dimple pattern start to overlap each other, so as to absorb a laser beam emitted toward a peripheral region of the machining region.. . ... Posco

02/23/17 / #20170051378

High-strength cold rolled steel sheet having excellent ductility, hot-dip galvanized steel sheet and method for manufacturing same

The present invention relates to: a high-strength steel sheet used for construction materials and transportation means such as vehicles and trains and, more specifically, to a high-strength cold rolled steel sheet having excellent ductility, a hot-dip galvanized steel sheet, and a method for manufacturing the same.. . ... Posco

02/09/17 / #20170040618

Solid oxide fuel cell comprising reaction preventing layer and method for manufacturing same

The present invention relates to a solid oxide fuel cell which can improve the overall performance of the cell and obtain durability and reliability, and the invention provides a solid oxide fuel cell comprising a reaction preventing layer and a method for manufacturing the same, wherein an anode, an electrolyte, and a cathode are comprised, and a material which is formed between the electrolyte and the cathode comprises 35-90 mol % of gadolinia-doped ceria (gdc) and 10-65 mol % of metal oxide.. . ... Posco

02/02/17 / #20170029955

Plated steel sheet for hot press forming having excellent weldability and corrosion resistance, forming member, and manufacturing method thereof

The present invention relates to a plated steel sheet for hot press forming, a hot-press forming member manufactured using the same, and a manufacturing method thereof. The plated steel sheet comprises: a base steel sheet and a composite plated layer that is formed on at least one surface of the base steel sheet, and has a mn-based plated layer and an al-based plated layer alternately formed therein, an al-based plated layer being formed on the uppermost layer thereof, wherein the composite plated layer has a total thickness of 5 to 30 μm, and in this case, the mn-based plated layer accounts for 5 to 60% of the total thickness.. ... Posco

01/05/17 / #20170003002

Lens and led lighting apparatus having the same

A lens may include: a lens part including an incidence surface onto which light is incident and a emission surface through which the light incident onto the incidence surface is emitted, and an outer surface which reflects the light incident onto the incidence surface toward the emission surface; and a holder part including a lens housing integrally connected with edge of the emission surface and surrounds an outer peripheral of the lens part, and at least one alignment protrusion located at a lower portion of the lens housing.. . ... Posco

01/05/17 / #20170002451

Cooling apparatus for plated steel sheet

A cooling apparatus for a plated steel sheet according to the present invention comprises: an injection means for injecting a cooling fluid while facing a steel sheet in progress; and an injection width varying means for varying the injection width of the cooling fluid so as to correspond to the width of the steel sheet, installed at the outside of the injection means so as to not interfere with the injection flow path of the cooling fluid.. . ... Posco

01/05/17 / #20170002450

Steel sheet for hot press forming with excellent corrosion resistance and weldability, forming member, and manufacturing method therefor

The present invention relates to: a steel sheet for hot press forming that is used for vehicle parts and the like and, more particularly, to a steel sheet for hot press forming with excellent corrosion resistance and weldability; a forming member; and a manufacturing method therefor.. . ... Posco

01/05/17 / #20170002435

Ultrahigh-strength steel for welding structure with excellent toughness in welding heat-affected zones thereof, and method for manufacturing same

Provided is a ultrahigh strength steel for a welded structure having superior toughness in a weld heat-affected zone (haz) comprising: by wt %, carbon (c): 0.05% to 0.15%, silicon (si): 0.1% to 0.6%, manganese (mn): 1.5% to 3.0%, nickel (ni): 0.1% to 0.5%, molybdenum (mo): 0.1% to 0.5%, chromium (cr): 0.1% to 1.0%, copper (cu): 0.1% to 0.4%, titanium (ti): 0.005% to 0.1%, niobium (nb): 0.01% to 0.03%, boron (b): 0.0003% to 0.004%, aluminum (al): 0.005% to 0.1%, nitrogen (n): 0.001% to 0.006%, phosphorus (p): 0.015% or less, sulfur (s): 0.015% or less, iron (fe) as a residual component thereof, and inevitable impurities.. . ... Posco








ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009



###

This listing is an abstract for educational and research purposes is only meant as a recent sample of applications filed, not a comprehensive history. Freshpatents.com is not affiliated or associated with Posco in any way and there may be associated servicemarks. This data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Posco with additional patents listed. Browse our Agent directory for other possible listings. Page by FreshPatents.com

###