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1.发明公开
公开(公告)号：EP4170055A1
公开(公告)日：2023-04-26
申请号：EP21825918.2
申请日：2021-06-16
申请人： POSCO Co., Ltd
发明人： KIM, Sung-Kyu , PARK, Jun-Ho , SEO, Chang-Hyo , CHOI, Eul-Yong , HAN, Sang-Ho
摘要： The present invention provides a high-strength steel sheet suitable for automobile structural members, etc., and a method for manufacturing same, wherein the high-strength steel sheet has a low yield ratio and high strength and has excellent formability by means of an enhanced ductility.
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公开(公告)号：EP3392364B1
公开(公告)日：2020-07-29
申请号：EP16875937.1
申请日：2016-11-22
申请人： POSCO
发明人： YI, Il-Cheol , KIM, Yong-Jin , KIM, Sung-Kyu , KANG, Sang-Deok , LEE, Un-Hae
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公开(公告)号：EP3034641B1
公开(公告)日：2019-10-09
申请号：EP13891437.9
申请日：2013-08-14
申请人： POSCO
发明人： KIM, Sung-Kyu , CHO, Won-Tae , KIM, Tai-Ho , CHIN, Kwang-Geun , HAN, Sang-Ho
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公开(公告)号：EP1971701B1
公开(公告)日：2018-08-01
申请号：EP06835302.8
申请日：2006-12-20
申请人： Posco Co., Ltd.
IPC分类号： C23C2/06
CPC分类号： C23C2/06 , B32B15/012 , C21D6/005 , C21D8/0236 , C21D8/0273 , C21D8/0284 , C22C18/00 , C22C38/04 , C22C38/60 , C23C2/28 , Y10T428/12799
摘要： A high-manganese hot-dip coated steel sheet is disclosed which provides high corrosion resistance, high ductility and high strength, mainly used for inner and outer panels of automobiles, and a method of manufacturing the same. The high-manganese hot-dip coated steel sheet includes a substrate steel sheet having a composition of (in weight %) 0.1 to 1.5% of C, 5 to 35% of Mn, and the remainder includes Fe and other unavoidable impurities, and a hot-dip zinc coating layer formed on the substrate steel sheet, the hot-dip zinc coating layer having a composition of (in weight %) 0.1 to 10% of Mn, 5 to 15% of Fe, and the remainder including Zn and other unavoidable impurities.
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公开(公告)号：EP3255170A1
公开(公告)日：2017-12-13
申请号：EP17180957.7
申请日：2013-08-14
申请人： POSCO
发明人： KIM, Sung-Kyu , CHO, Won-Tae , KIM, Tai-Ho , CHIN, Kwang-Geun , HAN, Sang-Ho
IPC分类号： C22C38/00 , C22C38/58 , C21D8/02 , C21D9/46 , B21B3/00 , C21D6/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/38 , C22C38/54 , C22C38/50 , B21B3/02 , C22C38/40
CPC分类号： C21D9/46 , B21B3/02 , C21D6/004 , C21D6/005 , C21D8/02 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D2211/001 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/40 , C22C38/50 , C22C38/54 , C22C38/58
摘要： The present invention relates to an ultrahigh-strength steel sheet and a manufacturing method therefor. More specifically, the present invention can provide an ultra-high strength steel sheet which can ensure weldability and a delayed fracture resistance property by controlling the contents of elements affecting platability along with the contents of austenite-stabilizing elements and increasing twin formation through re-rolling, and simultaneously improve impact characteristics and workability by ensuring excellent yield strength and ductility.
摘要翻译： 超高强度钢板及其制造方法技术领域本发明涉及超高强度钢板及其制造方法。 更具体地，本发明可以提供一种超高强度钢板，其通过控制影响镀覆性的元素的含量以及奥氏体稳定化元素的含量并通过再轧制增加孪生结构来确保可焊性和抗延迟断裂特性 同时通过确保优异的屈服强度和延展性来改善冲击特性和可加工性。
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6.发明公开
公开(公告)号：EP4455346A1
公开(公告)日：2024-10-30
申请号：EP22911820.3
申请日：2022-12-19
申请人： POSCO Co., Ltd
发明人： KIM, Sung-Kyu , HAN, Tae-Kyo , PARK, Jun-Ho , CHO, Kyoung-Rae , HAN, Sang-Ho
摘要： The present invention relates to a steel sheet for use in automobiles, etc., and to a steel sheet that has high strength and high formability and is superb in terms of spot weldability, and a manufacturing method therefor.
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7.发明公开
公开(公告)号：EP3699313A1
公开(公告)日：2020-08-26
申请号：EP18868100.1
申请日：2018-10-11
申请人： POSCO
发明人： HA, Yu-Mi , JUNG, Young-Deok , KANG, Sang-Deok , LEE, Un-Hae , KIM, Yong-Jin , KIM, Sung-Kyu , KIM, Young-Ju
IPC分类号： C22C38/38 , C22C38/20 , C22C38/28 , C22C38/32 , C22C38/02 , C22C38/06 , C22C38/00 , C21D9/46 , C21D8/02 , C21D6/00 , C21D7/13 , C21D9/00
摘要： The present invention provides: a high manganese steel for a low temperature; and a manufacturing method therefor, the high manganese steel comprising 0.3-0.8 wt% of C, 18-26 wt% of Mn, 0.01-1 wt% of Si, 0.01-0.5 wt% of Al, 0.1 wt% or less of Ti (excluding 0%), 1-4.5 wt% of Cr, 0.1-0.9 wt% of Cu, 0.03 wt% or less of S (excluding 0%), 0.3 wt% or less of P (excluding 0%), 0.001-0.03 wt% of N, 0.004 wt% or less of B (excluding 0%), and the balance of Fe and other inevitable impurities, wherein the microstructure is a single-phase austenitic structure, and the grain size of the austenitic structure is 50 µm or less.
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8.发明授权
公开(公告)号：EP3395980B1
公开(公告)日：2020-05-06
申请号：EP16879377.6
申请日：2016-12-23
申请人： POSCO
发明人： LEE, Un-Hae , KIM, Sung-Kyu , LEE, Soon-Gi , KIM, Yong-Jin , OH, Hong-Yeol
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9.发明公开
公开(公告)号：EP3392362A1
公开(公告)日：2018-10-24
申请号：EP16876076.7
申请日：2016-12-16
申请人： POSCO
发明人： KIM, Yong-Jin , LEE, Soon-Gi , YI, Il-Cheol , KIM, Sung-Kyu , KANG, Sang-Deok , LEE, Un-Hae
CPC分类号： C21D9/46 , C21D6/00 , C21D6/005 , C21D8/02 , C21D8/0205 , C21D8/0226 , C21D8/0263 , C21D2211/001 , C21D2211/004 , C22C38/04
摘要： The present invention relates to a wear resistant steel material which can be suitably used for industrial machinery, structural materials, steel materials for slurry pipes, sour steel materials, mining, transportation and storage fields, etc. in the oil gas industry which require properties such as ductility and wear resistance. More particularly, the present invention relates to a wear resistant steel material excellent in toughness and internal quality, and a method for manufacturing the same.
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10.发明公开NON-MAGNETIC HIGH MANGANESE STEEL SHEET WITH HIGH STRENGTH AND MANUFACTURING METHOD THEREOF 有权根据上述制造锰含量高和处理非磁性高强度钢板
公开(公告)号：EP2796585A1
公开(公告)日：2014-10-29
申请号：EP12859366.2
申请日：2012-12-20
申请人： Posco
发明人： KIM, Sung-Kyu , CHIN, Kwang-Geun , OH, Pil-Yong , HWANG, Hyun-Gyu
CPC分类号： C21D9/46 , C21D6/005 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14
摘要： The present invention relates to a non-magnetic high manganese steel sheet with high-strength, which ha superior strength and moldability, and at the same time, can obtain superior non-magnetic characteristics, and a method for manufacturing the same.
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