-
1.发明公开公开(公告)号：US20240011138A1
公开(公告)日：2024-01-11
申请号：US18032977
申请日：2021-12-17
申请人： POSCO CO., LTD
发明人： Sang-Ho UHM , Jin-Keun OH
摘要： An embodiment of the present invention provides a method for manufacturing a tailor welded blank using a steel sheet for hot pressing having an Al-Fe-based intermetallic alloy layer, the method comprising the steps of: preparing a plated steel sheet having a base steel sheet and an aluminum-based plated layer formed on one surface or both surfaces of the base steel sheet; heat-treating the plated steel sheet so that the aluminum-based plated layer becomes an Al-Fe-based intermetallic alloy layer; and subjecting the heat-treated plated steel sheet to butt welding, wherein, before the welding, a part or the entirety of the Al-Fe-based intermetallic alloy layer located in an area to be welded is removed.
-
公开(公告)号：US20230235423A1
公开(公告)日：2023-07-27
申请号：US18114387
申请日：2023-02-27
申请人： POSCO Co., Ltd
发明人： Jin-Keun OH , Yeol-Rae CHO , A-Ra CHO , Jin-Ho CHA , Si-Myoung HEO , Jeong-Won SEO , Seong-Woo KIM
IPC分类号： C21D9/46 , B21B3/02 , B21D22/02 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/50 , C22C38/54
CPC分类号： C21D9/46 , B21B3/02 , B21D22/022 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0247 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/50 , C22C38/54 , C21D2211/003 , C21D2211/005
摘要： An aspect of the present invention relates to a cold-rolled steel plate for hot forming, which is excellent in corrosion-resistance and spot-weldability, contains, by weight %, C: 0.1-0.4%, Si: 0.5-2.0%, Mn: 0.01-4.0%, Al: 0.001-0.4%, P: 0.001-0.05%, S: 0.0001-0.02%, Cr: 0.5% to less than 3.0%, N: 0.001-0.02%, and a balance of Fe and inevitable impurities, satisfying formula (1) below, and includes an Si amorphous oxidation layer continuously or discontinuously formed at a thickness of 1 nm-100 nm on the surface thereof. Formula (1): 1.4≤0.4*Cr+Si≤3.2 (wherein element symbols denote measurements of respective element contents by weight %).
-
公开(公告)号：US20230416863A1
公开(公告)日：2023-12-28
申请号：US18242140
申请日：2023-09-05
申请人： POSCO Co., Ltd
发明人： Jin-Keun OH , Yeol-Rae CHO , A-Ra CHO , Jin-Ho CHA , Si-Myoung HEO , Jeong-Won SEO , Seong-Woo KIM
IPC分类号： C21D9/46 , B21B3/02 , B21D22/02 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/50 , C22C38/54
CPC分类号： C21D9/46 , B21B3/02 , B21D22/022 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0247 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/50 , C22C38/54 , C21D2211/003 , C21D2211/005
摘要： An aspect of the present invention relates to a cold-rolled steel plate for hot forming, which is excellent in corrosion-resistance and spot-weldability, contains, by weight %, C: 0.1-0.4%, Si: 0.5-2.0%, Mn: 0.01-4.0%, Al: 0.001-0.4%, P: 0.001-0.05%, S: 0.0001-0.02%, Cr: 0.5% to less than 3.0%, N: 0.001-0.02%, and a balance of Fe and inevitable impurities, satisfying formula (1) below, and includes an Si amorphous oxidation layer continuously or discontinuously formed at a thickness of 1 nm-100 nm on the surface thereof. Formula (1): 1.4≤0.4*Cr+Si≤3.2 (wherein element symbols denote measurements of respective element contents by weight %).
-
公开(公告)号：US20240198633A1
公开(公告)日：2024-06-20
申请号：US18586317
申请日：2024-02-23
申请人： POSCO CO, LTD
发明人： Jin-Keun OH , Seong-Woo KIM , Hyeon-Jeong SHIN , A-Ra CHO
IPC分类号： B32B15/01 , B21D22/02 , B21D35/00 , B21D37/16 , B32B5/18 , B32B5/20 , B32B15/04 , B32B15/18 , C21D1/26 , C21D6/00 , C21D9/46 , C21D9/52 , C22C21/00 , C22C30/00 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , C22C38/58 , C22C38/60 , C22F1/00 , C22F1/04 , C23C2/04 , C23C2/06 , C23C2/12 , C23C2/26 , C23C2/28 , C23C2/40 , C23C26/00 , C23C28/00 , C23C28/02 , C23C30/00 , C23F17/00
CPC分类号： B32B15/012 , B21D22/02 , B21D22/022 , B21D35/00 , B21D35/005 , B21D37/16 , B32B5/18 , B32B5/20 , B32B15/01 , B32B15/011 , B32B15/013 , B32B15/04 , B32B15/043 , B32B15/18 , C21D1/26 , C21D6/005 , C21D6/008 , C21D9/46 , C21D9/52 , C22C21/00 , C22C30/00 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , C22C38/58 , C22C38/60 , C22F1/002 , C22F1/04 , C23C2/04 , C23C2/06 , C23C2/12 , C23C2/26 , C23C2/28 , C23C2/29 , C23C2/40 , C23C26/00 , C23C28/023 , C23C28/321 , C23C28/322 , C23C30/00 , C23C30/005 , C23F17/00 , Y10T428/12479 , Y10T428/12757 , Y10T428/12799 , Y10T428/12951 , Y10T428/12958 , Y10T428/12972 , Y10T428/12979 , Y10T428/12993
摘要： Provided is a steel sheet for a hot press formed member having excellent painting adhesion and post-painting corrosion resistance, and a method for manufacturing the same. A steel sheet for hot press forming according to one aspect of the present invention comprises a base steel sheet and a plated layer formed on a surface of the base steel sheet, wherein the ratio of an area occupied by pores to the entire area of a surface layer portion may be 10% or more in a cross section of the surface layer portion observed when the plated layer is cut in a thickness direction thereof.
-
公开(公告)号：US20230167531A1
公开(公告)日：2023-06-01
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： C23C2/28 , B21D35/00 , B32B15/01 , C21D6/00 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/12 , C23C2/40
CPC分类号： C23C2/28 , 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 , C23C2/40
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.
-
公开(公告)号：US20240181748A1
公开(公告)日：2024-06-06
申请号：US18406848
申请日：2024-01-08
申请人： POSCO CO., LTD
发明人： Jin-Keun OH , Il-Ryoung SOHN , Seong-Woo KIM , Jeom-Soo SHIN
IPC分类号： B32B15/01 , C22C21/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/12 , C23C2/26 , C23C2/28 , C23C2/40
CPC分类号： B32B15/012 , C22C21/02 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/12 , C23C2/26 , C23C2/28 , C23C2/29 , C23C2/40 , Y10T428/12757
摘要： The present disclosure relates to an aluminum-based plated steel that is provided for vehicles by hot forming, an aluminum-based alloy plated steel manufactured using the same, and method of manufacturing thereof.
-
公开(公告)号：US20240051265A1
公开(公告)日：2024-02-15
申请号：US18373451
申请日：2023-09-27
申请人： POSCO CO., LTD
发明人： Seong-Woo KIM , Jin-Keun OH , Yeol-Rae CHO
IPC分类号： B32B15/01 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/12 , C23C2/28 , B21D22/02 , C21D9/46 , C22F1/00 , C22F1/04 , C21D6/00 , C23C2/40 , C23F17/00 , B21D35/00 , C23C26/00 , C23C28/02 , C23C30/00 , C23C28/00 , B32B15/18 , C23C2/04 , B32B15/04 , C23C2/26 , C23C2/06 , C22C30/00 , C22C38/14 , C22C38/48 , C22C38/40 , C22C38/18 , C22C38/42 , C22C38/44 , C22C38/08 , C22C38/16 , C22C38/24 , C22C21/00 , C22C38/38 , C22C38/46 , C22C38/20 , C22C38/26 , C22C38/22 , C22C38/58 , C22C38/12 , C22C38/50 , C22C38/54 , B21D37/16 , B32B5/20 , B32B5/18 , C21D9/52 , C21D1/26 , C22C38/60
CPC分类号： B32B15/012 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/12 , C23C2/28 , B21D22/02 , C21D9/46 , C22F1/002 , C22F1/04 , C21D6/005 , C21D6/008 , C23C2/40 , C23F17/00 , B21D35/00 , C23C26/00 , B21D22/022 , B21D35/005 , B32B15/011 , C23C28/023 , C23C30/00 , C23C28/322 , C23C28/321 , B32B15/18 , C23C2/04 , B32B15/043 , B32B15/01 , B32B15/013 , C23C2/26 , B32B15/04 , C23C2/06 , C23C30/005 , C22C30/00 , C22C38/14 , C22C38/48 , C22C38/40 , C22C38/18 , C22C38/42 , C22C38/44 , C22C38/08 , C22C38/16 , C22C38/24 , C22C21/00 , C22C38/38 , C22C38/46 , C22C38/20 , C22C38/26 , C22C38/22 , C22C38/58 , C22C38/12 , C22C38/50 , C22C38/54 , B21D37/16 , B32B5/20 , B32B5/18 , C23C2/29 , C21D9/52 , C21D1/26 , C22C38/008 , C22C38/60 , Y10T428/12757 , Y10T428/12799 , Y10T428/12979 , Y10T428/12993 , Y10T428/12958 , Y10T428/12972 , Y10T428/12951 , Y10T428/12479
摘要： Provided is a steel sheet for a hot press formed member having excellent resistance to hydrogen delayed fracture, and a method for manufacturing the same. A steel sheet for a hot press formed member comprises: a base steel sheet; an aluminum alloy plating layer on a surface of the base steel sheet; and an oxide layer which is formed on a surface of the plating layer and has a thickness of 0.05 μm or more.
-
公开(公告)号：US20240009963A1
公开(公告)日：2024-01-11
申请号：US18372314
申请日：2023-09-25
申请人： POSCO Co., Ltd.
发明人： Seong-Woo KIM , Jin-Keun OH , A-Ra CHO , Hyeon-Jeong SHIN
IPC分类号： B32B15/01 , C22C38/32 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C21D9/46 , C21D6/00 , C21D1/84 , C22C21/02 , C22F1/043 , C23C2/12 , C23C2/28 , B21D22/02
CPC分类号： B32B15/011 , C22C38/32 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/002 , C22C38/001 , C21D9/46 , C21D6/002 , C21D6/005 , C21D6/008 , C21D1/84 , C22C21/02 , C22F1/043 , C23C2/12 , C23C2/28 , B21D22/02
摘要： The present invention relates to a hot press formed member. A hot press formed member according to one aspect of the present invention comprises a steel sheet; and a plating layer on the steel sheet, wherein a number of voids per 1000 μm2 of an area from an interface between the plating layer and the steel sheet to 15 μm is zero and wherein a concentration gradient at a section having an Fe content of 45% to 80% in the plating layer in a thickness direction from a surface of the plating layer according to a result of GDS analysis is 7 wt %/μm or less.
-
公开(公告)号：US20230287535A1
公开(公告)日：2023-09-14
申请号：US18199740
申请日：2023-05-19
申请人： POSCO CO., LTD
发明人： Seong-Woo KIM , Jin-Keun OH , Yeol-Rae CHO
IPC分类号： C21D9/46 , B32B15/01 , C21D6/00 , C21D8/02 , C22C21/02 , C22C38/00 , C22C38/02 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38 , C23C2/12 , C23C2/40
CPC分类号： C21D9/46 , B32B15/012 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C22C21/02 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38 , C23C2/12 , C23C2/40 , C21D2211/001 , C21D2211/005 , C21D2211/008 , C21D2211/009 , Y10T428/12757
摘要： One aspect of the present invention relates to a plated steel sheet for hot press forming, having an excellent impact property.
-
公开(公告)号：US20240191329A1
公开(公告)日：2024-06-13
申请号：US18444558
申请日：2024-02-16
申请人： POSCO CO., LTD
发明人： Seong-Woo KIM , Jin-Keun OH , Yeol-Rae CHO , Hyeon-Jeong SHIN
IPC分类号： C22C38/32 , B23K35/02 , B23K35/30 , B23K103/16 , B23K103/20 , C21D8/02 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/02 , C23C2/12 , C23C2/26 , C23C2/28 , C23C2/40
CPC分类号： C22C38/32 , B23K35/0238 , B23K35/3086 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/02 , C23C2/0224 , C23C2/12 , C23C2/261 , C23C2/28 , C23C2/29 , C23C2/40 , B23K2103/166 , B23K2103/20 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/008
摘要： Provided is an Al—Fe-alloy plated steel sheet for hot forming, having excellent TWB welding characteristics since excellent hardness uniformity of a TWB weld zone after hot forming is obtained by suitably controlling a batch annealing condition, after plating Al, such that an Al—Fe-alloy layer is formed; a hot forming member; and manufacturing methods therefor.
-
-
-
-
-
-
-
-
-
搜索结果
13 条记录 (耗时 0.018 秒)
