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1.发明公开
公开(公告)号：EP2612939A4
公开(公告)日：2014-08-13
申请号：EP11821237
申请日：2011-05-24
发明人： HONJO MINORU , HASE KAZUKUNI , KIMURA TATSUMI , MITAO SHINJI
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公开(公告)号：EP1905849A4
公开(公告)日：2011-01-05
申请号：EP06768024
申请日：2006-07-10
发明人： HIRAI ISAO , YOSHINO KOHEI , TAKUBO TAKAYASU , YOSHIDA KAZUHIKO , HASE KAZUKUNI , KIMURA HIDETO , UWAI KIYOSHI , TOYOOKA TAKAAKI
IPC分类号： C21D9/40 , B21J1/06 , B21K1/05 , B60B27/00 , B60B35/02 , C21D1/02 , C21D1/19 , F16C19/18 , F16C33/62 , F16C33/64
CPC分类号： F16C33/62 , B21K1/40 , B60B27/00 , C21D1/02 , C21D1/19 , C21D9/40 , C21D2221/00 , F16C33/64 , F16C2326/02 , Y10T29/49492 , Y10T29/49496 , Y10T29/49497 , Y10T29/49643 , Y10T29/49657 , Y10T29/497
摘要： A method is directed to a production of a bearing device for a wheel including an inner member (1) and an outer member (2) rotatable relative to each other through a plurality of rolling elements (3), in which a component part forming one of the inner member (1) and the outer member (2) is a hot forged product. In the practice of this method, during or at the end of a hot forging step for hot forging the component part, a portion of the component part is cooled by spraying a coolant or by controlling an atmospheric temperature, to thereby render a matrix of the component part to represent a standard structure and render a surface portion of the component part to represent a non-standard structure (30).
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公开(公告)号：EP2508638A4
公开(公告)日：2013-07-24
申请号：EP10833434
申请日：2010-11-30
发明人： HONJO MINORU , HASE KAZUKUNI , KIMURA HIDETO
IPC分类号： C22C38/00 , C21D8/06 , C21D9/40 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/40 , C22C38/54 , F16C33/62 , F16C33/64
CPC分类号： C21D9/40 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/40 , F16C2204/64
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公开(公告)号：EP2508637A4
公开(公告)日：2013-10-02
申请号：EP10833433
申请日：2010-11-30
发明人： HONJO MINORU , HASE KAZUKUNI , KIMURA HIDETO
IPC分类号： C22C38/00 , C21D9/40 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/40 , C22C38/54 , F16C33/62 , F16C33/64
CPC分类号： C22C38/04 , C21D9/40 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/06 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/40 , F16C2204/64
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5.发明公开THICK STEEL SHEET HAVING EXCELLENT CTOD PROPERTIES IN MULTI-LAYER WELDED JOINTS AND METHOD FOR PRODUCING SAME 审中-公开具有良好多重可熔CTD焊接混凝土性能的厚钢板及其生产方法
公开(公告)号：EP3006587A4
公开(公告)日：2016-07-20
申请号：EP14882797
申请日：2014-09-05
申请人： JFE STEEL CORP
IPC分类号： C22C38/00 , C21D6/00 , C21D8/02 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/58
CPC分类号： C21D9/46 , C21D1/18 , C21D8/0226 , C21D8/0263 , C21D9/50 , C21D9/505 , C21D2211/004 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/42 , C22C38/44 , C22C38/48 , C22C38/50 , C22C38/58
摘要： There is provided a thick steel plate having good multipass weld joint CTOD characteristics for low to medium heat input and a method for manufacturing the thick steel plate. A steel plate containing, on a mass percent basis, C: 0.03% to 0.12%, Si: 0.5% or less, Mn: 1.0% to 2.0%, P: 0.015% or less, S: 0.0005% to 0.0050%, Al: 0.005% to 0.060%, Ni: 0.5% to 2.0%, Ti: 0.005% to 0.030%, N: 0.0015% to 0.0065%, O: 0.0010% to 0.0050%, Ca: 0.0005% to 0.0060%, and optionally one or two or more of Cu and the like, wherein Ti/N, Ceq, Pcm, and ACR are in particular ranges, a base metal of the plate has an effective grain size of 20 µm or less at half the thickness of the plate, and the plate contains a particular number of complex inclusions at 1/4 and 1/2 of the thickness of the plate, the complex inclusions being composed of a sulfide containing Ca and Mn and an oxide containing Al and having an equivalent circular diameter of 0.1 µm or more. Steel having the composition described above is heated at a particular temperature, is then hot-rolled, and is cooled.
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6.发明公开
公开(公告)号：EP2799585A4
公开(公告)日：2015-01-14
申请号：EP12863931
申请日：2012-05-18
申请人： JFE STEEL CORP
CPC分类号： C21D8/02 , C21D8/0205 , C21D8/0226 , C21D8/0263 , C21D2201/05 , C21D2211/005 , C22C38/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/18
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公开(公告)号：EP1911536A4
公开(公告)日：2013-11-06
申请号：EP06747272
申请日：2006-06-05
申请人： JFE STEEL CORP
发明人： TOYOOKA TAKAAKI , KIMURA HIDETO , HASE KAZUKUNI
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公开(公告)号：EP3246426A4
公开(公告)日：2018-01-10
申请号：EP16737217
申请日：2016-01-15
申请人： JFE STEEL CORP
CPC分类号： C21D8/0263 , B21B1/024 , B21B1/026 , B21B3/00 , B21B3/02 , B21B2001/028 , C21D6/004 , C21D6/005 , C21D6/008 , C21D7/13 , C21D8/0205 , C21D8/0226 , C21D9/0081 , C21D9/46 , C21D2211/002 , C21D2211/008 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/16 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , C22C38/58
摘要： A technique for achieving high surface toughness and high strength and toughness of the inner part of a steel plate is provided. A thick-walled high-toughness high-strength steel plate is manufactured from steel having a particular composition and casted under conditions where the cooling rate of a surface during solidification is 1°C/s or less. The surface of the steel plate has a toughness (vE-40) of 70 J or more, and the steel plate has a thickness of 100 mm or more. The surface of the steel plate has high toughness, and the inner part of the steel plate has high strength and toughness.
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公开(公告)号：EP2530178A4
公开(公告)日：2017-01-11
申请号：EP11736785
申请日：2011-01-26
申请人： JFE STEEL CORP
发明人： ICHIMIYA KATSUYUKI , HASE KAZUKUNI , KIMURA HIDETO
IPC分类号： C22C38/00 , C21D1/06 , C21D6/00 , C22C38/02 , C22C38/04 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/54 , C23C8/22 , C23C8/80
CPC分类号： C22C38/02 , C21D1/06 , C21D1/25 , C21D6/002 , C21D2211/004 , C21D2211/008 , C22C38/002 , C22C38/04 , C22C38/26 , C22C38/28 , C23C8/22 , C23C8/80
摘要： The present invention provides a case hardening steel, comprising a component composition including C: 0.10 mass % to 0.35 mass %; Si: 0.01 mass % to 0.50 mass %; Mn: 0.40 mass % to 1.50 mass %; P: 0.02 mass % or less; S: 0.03 mass % or less; Al: 0.04 mass % to 0.10 mass %; Cr: 0.5 mass % to 2.5 mass %; B: 0.0005 mass % to 0.0050 mass %; Nb: 0.003 mass % to 0.080 mass %; Ti: 0.003 mass % or less; N: less than 0.0080 mass %; and balance as Fe and incidental impurities.
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10.发明公开THICK STEEL SHEET HAVING EXCELLENT CTOD PROPERTIES IN MULTILAYER WELDED JOINTS, AND MANUFACTURING METHOD FOR THICK STEEL SHEET 审中-公开具有优良的CTOD特性的厚钢板，多层焊连接和方法的厚钢板
公开(公告)号：EP2975148A4
公开(公告)日：2016-04-27
申请号：EP14762492
申请日：2014-03-05
申请人： JFE STEEL CORP
IPC分类号： C22C38/00 , C21D6/00 , C21D8/02 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/50 , C22C38/58
CPC分类号： C22C38/50 , C21D6/001 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0226 , C21D8/0263 , C21D9/46 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18
摘要： Provided are a thick steel plate with which a welded joint having good CTOD property is formed by low-to-medium heat input multipass welding and a method for producing the thick steel plate. The steel plate has a composition containing, by mass, C: 0.03% to 0.10%, Si: 0.5% or less, Mn: 1.0% to 2.0%, P: 0.015% or less, S: 0.0005% to 0.0050%, Al: 0.005% to 0.060%, Ni: 0.5% to 2.0%, Ti: 0.005% to 0.030%, N: 0.0015% to 0.0065%, O: 0.0010% to 0.0050%, Ca: 0.0005% to 0.0060%, and, as needed, one or more elements such as Cu. Ti/N, Ceq, Pcm, and ACR each fall within the specific range. The effective crystal grain size of the base metal at the center of the plate in the thickness direction is 20 µm or less. A specific amount of a composite inclusion including a sulfide containing Ca and Mn and an oxide containing Al having an equivalent circular diameter of 0.1 µm or more is present at the 1/4-thickness position and the 1/2-thickness position of the plate. The steel having the above-described composition is heated to a specific temperature, hot rolled, and cooled.
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