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公开(公告)号：US12084734B2
公开(公告)日：2024-09-10
申请号：US18034265
申请日：2021-12-03
申请人： POSCO Co., Ltd
发明人： Jin-Keun Oh , Seong-Woo Kim , Sang-Heon Kim , Hyo-Sik Chun
IPC分类号： C23C2/02 , C21D6/00 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/48 , C22C38/54 , C22C38/58 , C23C2/12 , C23C2/40
CPC分类号： C21D8/0263 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0278 , C21D9/46 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/48 , C22C38/54 , C22C38/58 , C23C2/02 , C23C2/022 , C23C2/024 , C23C2/12 , C23C2/40
摘要： Provided are plated steel sheets for hot press forming, hot press formed parts, and manufacturing methods thereof, the plated steel sheets comprising: a base steel sheet comprising, in weight %, C: 0.07 to 0.5%, Si: 0.05 to 1%, Mn: 0.5 to 5%, P: 0.001 to 0.015%, S: 0.0001 to 0.02%, Al: 0.01 to 0.1%, Cr: 0.01 to 1%, N: 0.001 to 0.02%, Ti: 0.1% or less, B: 0.01% or less, Sn: 0.01 to 0.1%, and a balance of Fe and inevitable impurities; an aluminum or aluminum alloy plating layer disposed on at least one surface of the base steel sheet; and an Sn-enriched layer provided between the base steel sheet and the plating layer, wherein the Sn-enriched layer satisfies a specific relationship.
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公开(公告)号：US20240261843A1
公开(公告)日：2024-08-08
申请号：US18636787
申请日：2024-04-16
申请人： POSCO CO., LTD
发明人： Seong-Woo Kim , Jin-Keun Oh , Sang-Heon Kim , Hyo-Sik Chun
IPC分类号： B21D35/00 , B32B15/01 , C21D6/00 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/12 , C23C2/26 , C23C2/28 , C23C2/40
CPC分类号： B21D35/007 , B32B15/012 , C21D6/002 , C21D6/005 , C21D6/008 , C21D9/46 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/12 , C23C2/26 , C23C2/28 , C23C2/29 , C23C2/40
摘要： The present disclosure provides a hot-press formed part comprising a plated steel sheet and an aluminum alloy plated layer formed on the plated steel sheet, wherein the aluminum alloy plated layer comprises: an alloying layer (I) formed on the plated steel sheet and containing, by weight %, 5-30% of Al; an alloying layer (II) formed on the alloying layer (I) and containing, by weight %, 30 to 60% of Al; an alloying layer (III) formed on the alloying layer (II) and containing, by weight %, 20-50% of Al and 5-20% of Si; and an alloying layer (IV) formed continuously or discontinuously on at least a part of the surface of the alloying layer (III), and containing 30-60% of Al, wherein the rate of the alloying layer (III) exposed on the outermost surface of the aluminum alloy plated layer is 10% or more.
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公开(公告)号：US11993825B2
公开(公告)日：2024-05-28
申请号：US17298782
申请日：2019-12-02
申请人： POSCO
发明人： Seong-Woo Kim , Jin-Keun Oh , Sang-Heon Kim , Sang-Bin Han
IPC分类号： B32B15/01 , C21D6/00 , C21D8/04 , C21D9/48 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/02 , C23C2/12 , C23C2/28 , C23C2/40
CPC分类号： C21D9/48 , B32B15/012 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0405 , C21D8/0421 , C21D8/0447 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/02 , C23C2/12 , C23C2/28 , C23C2/29 , C23C2/40
摘要： The present invention pertains to a hot press forming member having excellent resistance to hydrogen embrittlement, and a method for manufacturing same. An aspect of the present invention provides a hot press forming member having excellent resistance to hydrogen embrittlement, the hot press forming member comprising a base steel plate and an alloy-plated layer formed on the surface of the base steel plate, wherein the alloy-plated layer contains pores such that pores having a size of 5 μm or less constitute 3-30% of the surface area of the alloy-plated layer as viewed in a cross-section taken in the thickness direction of the member.
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公开(公告)号：US11248287B2
公开(公告)日：2022-02-15
申请号：US16773101
申请日：2020-01-27
申请人： POSCO
发明人： Min-Suk Oh , Sang-Heon Kim , Tae-Chul Kim , Jong-Sang Kim , Hyun-Chu Yun , Bong-Hwan Yoo , Il-Ryoung Sohn
IPC分类号： B32B15/01 , B32B15/04 , B32B15/18 , C22C38/04 , C22C38/02 , C22C38/06 , C22C18/04 , C23C30/00 , C23C28/02 , C23C2/06 , C23C2/40 , C23C2/16 , C23C2/28 , C23C2/02 , C22C18/00 , C23C2/26 , C22C38/08
摘要： 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. The Zn alloy plated steel material includes a lower interface layer and an upper interface layer between the base steel material and the Zn alloy plating layer, wherein the lower interface layer is formed on the base steel material and has a dense structure, and the upper interface layer is formed on the lower interface layer and has a network-type or island-type structure.
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公开(公告)号：US20220033929A1
公开(公告)日：2022-02-03
申请号：US17298782
申请日：2019-12-02
申请人： POSCO
发明人： Seong-Woo Kim , Jin-Keun Oh , Sang-Heon Kim , Sang-Bin Han
IPC分类号： C21D9/48 , B32B15/01 , C21D8/04 , C21D6/00 , C23C2/12 , C23C2/28 , C23C2/40 , C22C38/32 , C22C38/28 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00
摘要： The present invention pertains to a hot press forming member having excellent resistance to hydrogen embrittlement, and a method for manufacturing same. An aspect of the present invention provides a hot press forming member having excellent resistance to hydrogen embrittlement, the hot press forming member comprising a base steel plate and an alloy-plated layer formed on the surface of the base steel plate, wherein the alloy-plated layer contains pores such that pores having a size of 5 μm or less constitute 3-30% of the surface area of the alloy-plated layer as viewed in a cross-section taken in the thickness direction of the member.
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公开(公告)号：US09745654B2
公开(公告)日：2017-08-29
申请号：US14413530
申请日：2013-07-23
申请人： POSCO
发明人： Min-Suk Oh , Young-Sool Jin , Sang-Heon Kim , Su-Young Kim , Bong-Hwan Yoo
摘要： Provided is a hot dip zinc alloy plated steel sheet which is widely used in vehicles, domestic appliances, construction materials or the like and a method for manufacturing the same. A Zn—Al—Mg hot dip zinc alloy plating bath is used for manufacturing the hot dip zinc alloy plated steel strip, and a small amount of Ga or In is added to the plating bath for inhibiting an oxidation reaction of Mg in the plating bath so as to obtain excellent corrosion resistance and external surface of the plated steel sheet which is manufactured at this point.
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公开(公告)号：US20240182996A1
公开(公告)日：2024-06-06
申请号：US18286166
申请日：2022-08-12
申请人： POSCO CO., LTD
发明人： Sea-Woong Lee , Jin-Keun Oh , Seong-Woo Kim , Sang-Heon Kim , Hyo-Sik Chun , Sang-Bin Han
IPC分类号： C21D9/46 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/28 , C22C38/32 , C23C2/02 , C23C2/12 , C23C2/40
CPC分类号： C21D9/46 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0278 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/28 , C22C38/32 , C23C2/0224 , C23C2/12 , C23C2/40
摘要： The present invention relates to: a steel material for hot forming, used for a vehicle and the like; a hot-formed member; and a method for manufacturing same. In the method, when the formed steel material is skin pass rolled, rolling pressure and roughness of skin pass rolling rolls are controlled so that bendability can be improved.
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公开(公告)号：US11998971B2
公开(公告)日：2024-06-04
申请号：US18123460
申请日：2023-03-20
申请人： POSCO CO., LTD
发明人： Seong-Woo Kim , Jin-Keun Oh , Sang-Heon Kim , Hyo-Sik Chun
IPC分类号： B32B15/01 , B21D35/00 , C21D6/00 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/12 , C23C2/26 , C23C2/28 , C23C2/40
CPC分类号： B21D35/007 , B32B15/012 , C21D6/002 , C21D6/005 , C21D6/008 , C21D9/46 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/12 , C23C2/26 , C23C2/28 , C23C2/29 , C23C2/40
摘要： The present disclosure provides a hot-press formed part comprising a plated steel sheet and an aluminum alloy plated layer formed on the plated steel sheet, wherein the aluminum alloy plated layer comprises: an alloying layer (I) formed on the plated steel sheet and containing, by weight %, 5-30% of Al; an alloying layer (II) formed on the alloying layer (I) and containing, by weight %, 30 to 60% of Al; an alloying layer (III) formed on the alloying layer (II) and containing, by weight %, 20-50% of Al and 5-20% of Si; and an alloying layer (IV) formed continuously or discontinuously on at least a part of the surface of the alloying layer (III), and containing 30-60% of Al, wherein the rate of the alloying layer (III) exposed on the outermost surface of the aluminum alloy plated layer is 10% or more.
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公开(公告)号：US11897014B2
公开(公告)日：2024-02-13
申请号：US18096260
申请日：2023-01-12
申请人： POSCO CO., LTD
发明人： Seong-Woo Kim , Jin-Keun Oh , Sang-Heon Kim , Hyo-Sik Chun
IPC分类号： B21D35/00 , B32B15/01 , C21D6/00 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/12 , C23C2/28 , C23C2/40 , C23C2/26
CPC分类号： B21D35/007 , B32B15/012 , C21D6/002 , C21D6/005 , C21D6/008 , C21D9/46 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/12 , C23C2/26 , C23C2/28 , C23C2/29 , C23C2/40
摘要： The present disclosure provides a hot-press formed part comprising a plated steel sheet and an aluminum alloy plated layer formed on the plated steel sheet, wherein the aluminum alloy plated layer comprises: an alloying layer (I) formed on the plated steel sheet and containing, by weight %, 5-30% of Al; an alloying layer (II) formed on the alloying layer (I) and containing, by weight %, 30 to 60% of Al; an alloying layer (III) formed on the alloying layer (II) and containing, by weight %, 20-50% of Al and 5-20% of Si; and an alloying layer (IV) formed continuously or discontinuously on at least a part of the surface of the alloying layer (III), and containing 30-60% of Al, wherein the rate of the alloying layer (III) exposed on the outermost surface of the aluminum alloy plated layer is 10% or more.
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公开(公告)号：US20230383373A1
公开(公告)日：2023-11-30
申请号：US18034265
申请日：2021-12-03
申请人： POSCO
发明人： Jin-Keun Oh , Seong-Woo Kim , Sang-Heon Kim , Hyo-Sik Chun
IPC分类号： C21D8/02 , C22C38/58 , C22C38/54 , C22C38/48 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C21D9/46 , C21D6/00 , C23C2/40 , C23C2/12
CPC分类号： C21D8/0263 , C22C38/58 , C22C38/54 , C22C38/48 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/008 , C22C38/002 , C22C38/001 , C21D9/46 , C21D8/0205 , C21D8/0226 , C21D8/0278 , C21D6/002 , C21D6/005 , C21D6/008 , C23C2/40 , C23C2/12
摘要： Provided are plated steel sheets for hot press forming, hot press formed parts, and manufacturing methods thereof, the plated steel sheets comprising: a base steel sheet comprising, in weight %, C: 0.07 to 0.5%, Si: 0.05 to 1%, Mn: 0.5 to 5%, P: 0.001 to 0.015%, S: 0.0001 to 0.02%, Al: 0.01 to 0.1%, Cr: 0.01 to 1%, N: 0.001 to 0.02%, Ti: 0.1% or less, B: 0.01% or less, Sn: 0.01 to 0.1%, and a balance of Fe and inevitable impurities; an aluminum or aluminum alloy plating layer disposed on at least one surface of the base steel sheet; and an Sn-enriched layer provided between the base steel sheet and the plating layer, wherein the Sn-enriched layer satisfies a specific relationship.
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