-
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.
-
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.
-
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.
-
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.
-
-
-
-
搜索结果
5 条记录 (耗时 0.009 秒)
