专利检索 ap:("POSCO Co., Ltd") AND inv:"Jin-Keun Oh" 第 1 页

$Aluminum-based plated steel plate for hot press having excellent resistance against hydrogen delayed fracture and spot weldability, and method for manufacturing same$

1.

发明授权
Aluminum-based plated steel plate for hot press having excellent resistance against hydrogen delayed fracture and spot weldability, and method for manufacturing same 有权

公开(公告)号：US12123094B2

公开(公告)日：2024-10-22

申请号：US17297757

申请日：2019-11-29

申请人： POSCO CO., LTD

发明人： Jin-Keun Oh , Seong-Woo Kim , Yeol-Rae Cho , Sang-Heon Kim

IPC分类号： B32B15/10 , B32B15/01 , C21D9/48 , C22C21/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/12 , C23C2/28 , C23C2/40

CPC分类号： C23C2/12 , B32B15/012 , C21D9/48 , C22C21/02 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C23C2/28 , C23C2/29 , C23C2/40

摘要： The present invention provides an aluminum-based plated steel plate used in hot-press forming, the steel plate comprising: a base steel plate; and a plating layer formed on the base steel plate, wherein the plating layer comprises: an alloying layer formed on the surface of the base steel plate and including one or more of Fe 3Al, FeAl(Si), Fe 2Al 5, and FeAl 3; and an aluminum layer formed on the alloying layer and having a thickness less than 10% of the thickness of the plating layer, and the plating layer has a thickness of 5-20 μm and an oxygen content of 10 weight % or less, as measured by GDS, at a depth of 0.1 μm from the surface of the plating layer.

2.

发明公开
PLATED STEEL SHEETS FOR HOT PRESS FORMING HAVING EXCELLENT HYDROGEN BRITTLENESS RESISTANCE AND IMPACT RESISTANCE, HOT PRESS FORMED PARTS, AND MANUFACTURING METHODS THEREOF 审中-公开

公开(公告)号：US20230286030A1

公开(公告)日：2023-09-14

申请号：US18019639

申请日：2021-10-19

申请人： POSCO Co., Ltd

发明人： Sang-Heon Kim , Jin-Keun Oh , Seong-Woo Kim , Sang-Bin Han

IPC分类号： B21D22/02 , C22C38/38 , C22C38/32 , C22C38/60 , C22C38/28 , C22C38/04 , C22C38/06 , C22C38/02 , C22C38/00 , C22C33/04 , C21D9/00 , C21D8/02 , C21D9/46 , C21D6/00

CPC分类号： B21D22/022 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0278 , C21D9/0081 , C21D9/46 , C22C33/04 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C22C38/38 , C22C38/60

摘要： Provided are a plated steel sheet for hot press forming including: a base steel sheet containing, by wt%, 0.14 to 0.5% of C, 0.001 to 1% of Si, 0.3 to 4% of Mn, 0.001 to 0.015% of P, 0.0001 to 0.02% of S, 0.001 to 0.1% of Al, 0.001 to 1% of Cr, 0.001 to 0.02% of N, 0.1% or less of Ti, 0.01% or less of B, 0.005 to 0.1% of Sb, and a balance of Fe and unavoidable impurities; an aluminum or aluminum alloy plating layer provided on at least one surface of the base steel sheet; and a Sb-rich layer provided between the base steel sheet and the plating layer, wherein the plated steel sheet for hot press forming satisfies the following Relational Expressions 1-1 and 1-2, a hot press formed member manufactured using the same, and methods for manufacturing the plated steel sheet for hot press forming and the hot press formed member.

S

b

max

S

b

c
o
a
t

≥
1.2

[Relational Expression 1-1]

S

b

max

−
S

b

c
o
a
t

2

×
Δ
t
≥
0.008

[Relational Expression 1-2]

[In Relational Expressions 1-1 and 1-2, Sbcoat represents an average content of Sb in the plating layer, and a unit thereof is wt%, Sbmax represents a maximum value of a content of Sb in the Sb-rich layer, and a unit thereof is wt%, and Δt represents a linear distance from a boundary between the plating layer and the Sb-rich layer to a point where Sbmax is measured, and a unit thereof is µm.]

3.

发明公开
COLD-ROLLED STEEL PLATE FOR HOT FORMING, HAVING EXCELLENT CORROSION-RESISTANCE AND SPOT-WELDABILITY, HOT-FORMED MEMBER, AND METHOD FOR MANUFACTURING SAME 审中-公开

公开(公告)号：US20240301527A1

公开(公告)日：2024-09-12

申请号：US18666200

申请日：2024-05-16

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 %).

4.

发明公开
HOT PRESS FORMING MEMBER HAVING EXCELLENT RESISTANCE TO HYDROGEN EMBRITTLEMENT, AND METHOD FOR MANUFACTURING SAME 审中-公开

公开(公告)号：US20240295003A1

公开(公告)日：2024-09-05

申请号：US18643362

申请日：2024-04-23

申请人： POSCO CO., LTD

发明人： Seong-Woo Kim , Jin-Keun Oh , Sang-Heon Kim , Sang-Bin Han

IPC分类号： C21D9/48 , B32B15/01 , C21D6/00 , C21D8/04 , 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.

5.

发明授权
Cold-rolled steel plate for hot forming, having excellent corrosion-resistance and spot-weldability, hot-formed member, and method for manufacturing same 有权

公开(公告)号：US11788166B2

公开(公告)日：2023-10-17

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 %).

6.

发明公开
PLATED STEEL SHEET FOR HOT PRESS FORMING HAVING EXCELLENT IMPACT PROPERTY, HOT PRESS FORMED PART, AND MANUFACTURING METHOD THEREOF 审中-公开

公开(公告)号：US20240301526A1

公开(公告)日：2024-09-12

申请号：US18664762

申请日：2024-05-15

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 , C23C2/02 , C23C2/12 , C23C2/28 , 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 , C23C2/02 , C23C2/0224 , C23C2/024 , C23C2/12 , C23C2/28 , C23C2/29 , 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.

7.

发明授权
Plated steel sheets for hot press forming having excellent hydrogen brittleness resistance and impact resistance, hot press formed parts, and manufacturing methods thereof 有权

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.

8.

发明公开
HOT PRESS-FORMED PART, AND MANUFACTURING METHOD THEREOF 审中-公开

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.

9.

发明授权
Manufacturing method of aluminum-based alloy plated steel 有权

公开(公告)号：US11904572B2

公开(公告)日：2024-02-20

申请号：US18121249

申请日：2023-03-14

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 , C23C2/28 , C23C2/40 , C23C2/26

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.