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公开(公告)号：US12070785B2
公开(公告)日：2024-08-27
申请号：US18153697
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 hot-stamped part is manufactured from a blank using a manufacturing method that includes inserting a blank into a heating furnace. The heating furnace includes heating sections and soaking sections. The blank passes through the heating sections, and through the soaking sections at a temperature of Ac3 to 1,000° C. In the step of heating the blank, a temperature condition in the heating furnace satisfies formula 0
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公开(公告)号：US20240226982A9
公开(公告)日：2024-07-11
申请号：US18400580
申请日：2023-12-29
发明人： Chang Yong Lee , Sung Ryul Kim , Jeong Seok Kim , Joo Sik Hyun , Yoo Dong Chung
IPC分类号： B21D22/02 , B23K26/21 , B23K35/02 , B23K35/30 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/06
CPC分类号： B21D22/022 , B23K26/21 , B23K35/0261 , B23K35/3073 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/06 , B23K2101/185
摘要： According to an exemplary embodiment of the present disclosure, disclosed is an aluminum coated blank that includes a first coated steel sheet; a second coated steel sheet connected to the first coated steel sheet; and a joint portion that connects the first coated steel sheet to the second coated steel plate at a boundary between the first coated steel sheet and the second coated steel sheet.
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公开(公告)号：US11898218B2
公开(公告)日：2024-02-13
申请号：US17110190
申请日：2020-12-02
发明人： Nu Ri Shin , Hun Chul Kang , Ji Hee Son , Byoung Hoon Kim
CPC分类号： C21D9/46 , B21B3/003 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/32 , C21D2211/004
摘要： Provided is a material for hot stamping including: a steel sheet including carbon (C) in an amount of 0.28 wt % to 0.50 wt %, silicon (Si) in an amount of 0.15 wt % to 0.70 wt %, manganese (Mn) in an amount of 0.5 wt % to 2.0 wt %, phosphorus (P) in an amount less than or equal to 0.05 wt %, sulfur (S) in an amount less than or equal to 0.01 wt %, chromium (Cr) in an amount of 0.1 wt % to 0.5 wt %, boron (B) in an amount of 0.001 wt % to 0.005 wt %, balance iron (Fe), and other inevitable impurities; and fine precipitates distributed in the steel sheet, wherein 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：US20230167519A1
公开(公告)日：2023-06-01
申请号：US17922626
申请日：2021-12-21
发明人： Byoung Jin KIM , Chun ku Kang , YoungJu Park , Ha Young Yu , Min Ho Jang , Seong Kyung Han , Sung Yul Huh
IPC分类号： C21D8/02 , C21D9/46 , C22C38/00 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/26 , C22C38/28 , C23C2/40
CPC分类号： C21D8/0236 , C21D9/46 , C21D8/0226 , C21D8/0273 , C22C38/004 , C22C38/04 , C22C38/06 , C22C38/002 , C22C38/22 , C22C38/26 , C22C38/28 , C23C2/40 , C21D2211/008 , C21D2211/005
摘要： The present invention provides a dent-resistant cold-rolled steel sheet having excellent dent-resistance properties. According to one embodiment of the present invention, the dent-resistant cold-rolled steel sheet includes, by weight, carbon (C): 0.005% to 0.03%, manganese (Mn): 1.0% to 2.5%, aluminum (Al): 0.2% to 0.8%, sum of chromium (Cr) and molybdenum (Mo): 0.3% to 1.5%, sum of niobium (Nb) and titanium (Ti): 0.001% to 0.01%, phosphorus (P): greater than 0% to 0.02%, sulfur (S): greater than 0% to 0.01%, and the balance of iron (Fe) and other unavoidable impurities, wherein a yield strength (YP) of 195 MPa or greater, a tensile strength (ST) of 340 MPa or greater, elongation (El) of 33% or greater, and a bake hardening (BH) amount of 40 MPa or greater are satisfied.
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公开(公告)号：US20230166311A1
公开(公告)日：2023-06-01
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：US20230143840A1
公开(公告)日：2023-05-11
申请号：US18153716
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：US20230111843A1
公开(公告)日：2023-04-13
申请号：US18079529
申请日：2022-12-12
IPC分类号： C22C38/54 , C22C38/50 , C22C38/48 , C22C38/44 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00
摘要： A steel sheet for hot stamping includes an amount of 0.17 wt % to 0.25 wt % of carbon (C), an amount of 0.3 wt % to 1.0 wt % of silicon, an amount of 0.6 wt % to 1.0 wt % of manganese (Mn), an amount of 0.02 wt % or less of phosphorus (P), an amount of 0.01 wt % or less of sulfur (S), an amount of 0.1 wt % to 1.0 wt % of aluminum (Al), an amount of 0.001 wt % to 0.005 wt % of boron (B), an amount of 0.01 wt % to 0.1 wt % of titanium (Ti), an amount of 0.02 wt % to 0.06 wt % of niobium (Nb), an amount of 0.3 wt % to 1.0 wt % of a sum of at least one of chromium (Cr), nickel (Ni), and molybdenum (Mo), and the balance of iron (Fe) and other unavoidable impurities; and also a microstructure including ferrite and pearlite.
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公开(公告)号：US20230111519A1
公开(公告)日：2023-04-13
申请号：US18079629
申请日：2022-12-12
发明人： Je Woo Soo Kim , Byung Gil Yoo , Seong Kyung Han , Dong Yong Kim
IPC分类号： C21D9/46 , C22C38/02 , C22C38/04 , C22C38/00 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C23C2/40 , C23C2/12
摘要： An embodiment of the present invention provides a steel sheet for hot press, including carbon (C) in an amount of 0.03 to 0.15 wt%, silicon (Si) in an amount of 0.1 to 1.5 wt%, manganese (Mn) in an amount of 1.0 to 2.0 wt%, phosphorus (P) in an amount of 0.1 wt% or less, sulfur (S) in an amount of 0.01 wt% or less, boron (B) in an amount of 0.0005 to 0.005 wt%, a sum of one or more of titanium (Ti), niobium (Nb), and vanadium (V) in an amount of 0.01 to 1.0 wt%, chromium (Cr) in an amount of 0.01 to 0.5 wt%, the balance of iron (Fe), and other unavoidable impurities. The steel sheet for hot press includes MnS-based inclusions, and an area fraction of the MnS-based inclusions is 5 % or less.
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公开(公告)号：US20220344757A1
公开(公告)日：2022-10-27
申请号：US17532086
申请日：2021-11-22
发明人： Sung Ho YOON , Uk HEO , Jin Yee NOH , Dong Yul LEE , Han Young HWANG , Sang Pil PARK
IPC分类号： H01M50/242 , B60K1/04 , H01M50/249
摘要： A vehicle battery case includes: a housing in which a battery is mounted and which has a side surface part formed to cover the side surface of the battery; a side upper panel coupled to the side surface part of the housing and extending in a longitudinal direction along the side surface part; a side lower panel coupled to the side surface part of the housing while being spaced downward apart from the side upper panel and extending in the longitudinal direction along the side surface part of the housing, an end of the side lower panel being coupled to an end of the side upper panel so as to form an impact absorption space between the side lower panel and the side upper panel; and a reinforcement panel inserted into the impact absorption space and extending in the longitudinal direction along the side surface part of the housing.
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公开(公告)号：US20220316039A1
公开(公告)日：2022-10-06
申请号：US17609645
申请日：2020-06-19
发明人： Jun Ho Chung , Tae Hyung Kim
IPC分类号： C22C38/32 , C21D8/02 , C21D8/06 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/20 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/40
摘要： Provided is a steel reinforcement including an amount of 0.07 to 0.43 wt % of carbon (C), an amount of 0.5 to 2.0 wt % of manganese (Mn), an amount of 0.05 to 0.5 wt % of silicon (Si), an amount greater than 0 and less than or equal to 0.5 wt % of chromium (Cr), an amount greater than 0 and less than or equal to 4.5 wt % of copper (Cu), an amount greater than 0 and less than or equal to 0.003 wt % of boron (B), an amount greater than 0 and less than or equal to 0.25 wt % of vanadium (V), an amount greater than 0 and less than or equal to 0.012 wt % of nitrogen (N), an amount greater than 0 and less than or equal to 0.03 wt % of phosphorus (P), an amount greater than 0 and less than or equal to 0.03 wt % of sulfur (S), an amount of 0.01 to 0.5 wt % of the sum of one or more of nickel (Ni), niobium (Nb) and titanium (Ti), the balance of iron (Fe), and other inevitable impurities. A final microstructure includes ferrite, bainite, pearlite, retained austenite, and precipitates comprising copper.
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