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61.发明公开公开(公告)号：US20240217032A1
公开(公告)日：2024-07-04
申请号：US18605122
申请日：2024-03-14
发明人： Chang Yong Lee , Jeong Seok Kim , Sung Ryul Kim , Tae Woo Kwon
IPC分类号： B23K26/322 , B23K35/02 , B23K103/04 , C22C38/02 , C22C38/04 , C22C38/06
CPC分类号： B23K26/322 , B23K35/0261 , C22C38/02 , C22C38/04 , C22C38/06 , B23K2103/04
摘要： Disclosed are an aluminum-coated blank, a manufacturing method thereof, and an apparatus for manufacturing the same. The blank includes two or more aluminum-coated steel sheets connected together by a joint, each of the steel sheets including: a base steel sheet including 0.01-0.5 wt % of carbon, 0.01-1.0 wt % of silicon, 0.5-3.0 wt % of manganese, greater than 0 but not greater than 0.05 wt % of phosphorus, greater than 0 but not greater than 0.01 wt % of sulfur, greater than 0 but not greater than 0.1 wt % of aluminum, greater than 0 but not greater than 0.001 wt % of nitrogen, and the balance of iron and other inevitable impurities; and a coating layer including aluminum and formed on at least one surface of the base steel sheet.
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公开(公告)号：US20240181517A1
公开(公告)日：2024-06-06
申请号：US18399879
申请日：2023-12-29
发明人： Min Ho Jang , Kun Woo Chang
CPC分类号： B21D22/022 , C21D6/002 , C21D6/005 , C21D6/008 , C21D9/46 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/32 , C23C8/00
摘要： A hot-stamped component according to an embodiment of the present disclosure includes a steel sheet, a plating layer located on the steel sheet and including Zn, and a surface layer located on the plating layer, wherein the surface layer includes a post-treatment layer including an Si-based inorganic post-treatment agent, a Zn oxide layer located on a same layer as the post-treatment layer on the plating layer, and an inter-diffusion layer located between the plating layer and at least one of the post-treatment layer and the Zn oxide layer to overlap at least one of the post-treatment layer and the Zn oxide layer, the inter-diffusion layer including at least one of Si, Mn, O, Fe, Zn, and SiO.
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公开(公告)号：US11931786B2
公开(公告)日：2024-03-19
申请号：US18096442
申请日：2023-01-12
发明人： Je Youl Kong
IPC分类号： B21D22/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/28 , C22C38/32
CPC分类号： B21D22/022 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/28 , C22C38/32
摘要： A method of manufacturing a hot-stamped part includes: inserting a blank into a heating furnace including a plurality of sections with different temperature ranges; step heating the blank in multiple stages; and soaking the blank at a temperature of about Ac3 to about 1,000° C., wherein in the step of heating the blank, a temperature condition in the heating furnace satisfies the following equation: 0
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公开(公告)号：US11913117B2
公开(公告)日：2024-02-27
申请号：US18173392
申请日：2023-02-23
发明人： Hye Jin Kim , Kyu Yeon Hwang , Hyun Yeong Jung , Jin Ho Lee , Seung Pill Jung
IPC分类号： B32B15/01 , C23C2/02 , B21D22/02 , B21D37/16 , C21D1/673 , C22C38/00 , C23C2/12 , C23C2/26 , C23C2/28 , C23C2/40 , F27B9/02
CPC分类号： C23C2/02 , B21D22/022 , B21D37/16 , B32B15/012 , C21D1/673 , C22C38/00 , C23C2/12 , C23C2/26 , C23C2/28 , C23C2/40 , F27B9/028
摘要： Disclosed is a hot-stamping component, which includes a base steel plate; and a plated layer on the base steel plate and including a first layer, a second layer, and an intermetallic compound portion having an island shape in the second layer, wherein the first layer and the second layer are sequentially stacked, and an area fraction of the intermetallic compound portion with respect to the second layer is an amount of 20% to 60%.
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公开(公告)号：US11898231B2
公开(公告)日：2024-02-13
申请号：US17234428
申请日：2021-04-19
发明人： In Beom Lee , Min Woo Kang , Min Woo Kang , Dong Hwi Kim , Chang Won Kang , Myung Sik Kim , Sung Min Hong , Gung Seung Nam , Sang Won Lee
摘要： A steel for a gear includes, based on a total weight of the steel: C: 0.10-0.30 wt %, Si: 0.60-0.80 wt %, Mn: 0.25-0.75 wt %, Cr: 1.80-2.20 wt %, Ni: 0.50-1.50 wt %, Mo: 0.20-0.40 wt %, Nb: 0.025-0.050 wt %, V: 0.030-0.050 wt %, and a balance of Fe and inevitable impurities, wherein contents of Nb and V satisfy the following :
0.055 ,
wherein [Nb] represents a content of Nb and [V] represents a content of V.-
公开(公告)号：US20230227932A1
公开(公告)日：2023-07-20
申请号：US18115459
申请日：2023-02-28
发明人： Nu Ri Shin , Hun Chul Kang , Ji Hee Son , Byoung Hoon Kim
IPC分类号： C21D9/46 , C21D8/02 , C22C38/32 , C22C38/04 , C22C38/02 , C22C38/00 , C21D6/00 , C21D6/02 , B21B3/02 , B21D22/02
CPC分类号： C21D9/46 , C21D8/0205 , C22C38/32 , C22C38/04 , C22C38/02 , C22C38/002 , C21D6/002 , C21D6/005 , C21D6/008 , C21D6/02 , C21D8/0236 , C21D8/0263 , B21B3/02 , B21D22/022 , C21D2211/004 , C21D2211/008
摘要： Provided are a material for hot stamping, wherein the material includes: a steel sheet including carbon (C) in an amount of 0.19 wt % to 0.25 wt %, silicon (Si) in an amount of 0.1 wt % to 0.6 wt %, manganese (Mn) in an amount of 0.8 wt % to 1.6 wt %, phosphorus (P) in an amount less than or equal to 0.03 wt %, sulfur (S) in an amount less than or equal to 0.015 wt %, chromium (Cr) in an amount of 0.1 wt % to 0.6 wt %, boron (B) in an amount of 0.001 wt % to 0.005 wt %, an additive in an amount less than or equal to 0.1 wt %, balance iron (Fe), and other inevitable impurities; and fine precipitates distributed within the steel sheet. The additive includes at least one of titanium (Ti), niobium (Nb), and vanadium (V), and the fine precipitates include nitride or carbide of at least one of titanium (Ti), niobium (Nb), and vanadium (V) and trap hydrogen.
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公开(公告)号：US20230203634A1
公开(公告)日：2023-06-29
申请号：US18173392
申请日：2023-02-23
发明人： Hye Jin Kim , Kyu Yeon Hwang , Hyun Yeong Jung , Jin Ho Lee , Seung Pill Jung
IPC分类号： C23C2/02 , B21D22/02 , B21D37/16 , B32B15/01 , C21D1/673 , C22C38/00 , C23C2/26 , C23C2/12 , C23C2/40 , C23C2/28
CPC分类号： C23C2/02 , B21D22/022 , B21D37/16 , B32B15/012 , C21D1/673 , C22C38/00 , C23C2/26 , C23C2/12 , C23C2/40 , C23C2/28 , F27B9/028
摘要： Disclosed is a hot-stamping component, which includes a base steel plate; and a plated layer on the base steel plate and including a first layer, a second layer, and an intermetallic compound portion having an island shape in the second layer, wherein the first layer and the second layer are sequentially stacked, and an area fraction of the intermetallic compound portion with respect to the second layer is an amount of 20% to 60%.
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68.发明授权公开(公告)号：US11655518B2
公开(公告)日：2023-05-23
申请号：US17527249
申请日：2021-11-16
发明人： Byung Gil Yoo , Hyeong Hyeop Do , Chee Woong Song , Do Hak Kim , Young Mun Shin , Soon Geun Jang , Sang Mun Hong
CPC分类号： C21D9/50 , B21D22/022 , C21D6/005 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C22C38/04 , C22C38/12 , C22C38/14 , C21D2211/005 , C21D2211/008
摘要： In accordance with one aspect of the present disclosure, there is provided a steel material for a tailor-welded blank, including 0.04 to 0.06 wt % of carbon (C), 1.2 to 1.5 wt % of manganese (Mn), 0.01 to 0.10 wt % of titanium (Ti), 0.01 to 0.10 wt % of niobium (Nb), and the balance of iron (Fe) and inevitable impurities; having a tensile strength (TS) of 550 MPa or greater, a yield strength (YS) of 300 MPa or greater, and an elongation (EL) of 20% or greater; and having a dual-phase structure of ferrite and martensite.
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公开(公告)号：US20230150001A1
公开(公告)日：2023-05-18
申请号：US18153740
申请日：2023-01-12
发明人： Je Youl Kong
IPC分类号： B21D22/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/28 , C22C38/32
CPC分类号： B21D22/022 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/28 , C22C38/32
摘要： A method of manufacturing a hot-stamped part includes: inserting a blank into a heating furnace including a plurality of sections with different temperature ranges; step heating the blank in multiple stages; and soaking the blank at a temperature of about Ac3 to about 1,000° C., wherein in the step of heating the blank, a temperature condition in the heating furnace satisfies the following equation: 0
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公开(公告)号：US20230150000A1
公开(公告)日：2023-05-18
申请号：US18096375
申请日：2023-01-12
发明人： Je Youl Kong
IPC分类号： B21D22/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/28 , C22C38/32
CPC分类号： B21D22/022 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/28 , C22C38/32
摘要： A method of manufacturing a hot-stamped part includes: inserting a blank into a heating furnace including a plurality of sections with different temperature ranges; step heating the blank in multiple stages; and soaking the blank at a temperature of about Ac3 to about 1,000° C., wherein in the step of heating the blank, a temperature condition in the heating furnace satisfies the following equation: 0
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