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1. 发明申请

WO2006059784A9 STEEL AND STEEL WIRE FOR HIGH STRENGTH SPRING 审中-公开
标题翻译：钢和钢丝用于高强度弹簧
公开(公告)号：WO2006059784A9
公开(公告)日：2006-08-10
申请号：PCT/JP2005022418
申请日：2005-11-30
申请人： NIPPON STEEL CORP , HASHIMURA MASAYUKI , HAGIWARA HIROSHI , MIYAKI TAKANORI , KISU TAKAYUKI , YAMAZAKI KOUICHI
发明人： HASHIMURA MASAYUKI , HAGIWARA HIROSHI , MIYAKI TAKANORI , KISU TAKAYUKI , YAMAZAKI KOUICHI
IPC分类号： C22C38/00 , C21D8/06 , C21D9/52 , C22C38/04 , C22C38/60 , F16F1/06
CPC分类号： C22C38/04 , C21D8/06 , C21D9/525 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/22 , C22C38/28
摘要： Disclosed is a spring steel for spring steel wires which exhibits both high strength and good workability in cold coiling. This spring steel comprises, in mass %, 0.45 % to 0.70 % of C, 1.0 % to 3.0 % of Si, 0.05 % to 2.0 % of Mn, 0.015 % or less of P, 0.015 % or less of S, 0.0015 % to 0.0200 % of N, and 0.000 2% to 0.01 % of t-O, and satisfies Al = 0.01 % and Ti = 0.003 %. Also disclosed is a spring steel wire using such a spring steel. The spring steel is further characterized in that, with respect to cementite spherical carbides on a microscopic observation plane, the percentage of the area occupied by carbides having a circle-equivalent diameter of 0.2 µm or more is 7 % or less, the density of carbides having a circle-equivalent diameter of 0.2 µm to 3 µm is 1 piece/µm 2 or less, the density of carbides having a circle-equivalent diameter of more than 3 µm is 0.001 piece/µm 2 or less, the grain size number of prior austenite is 10 or higher, the amount of residual austenite is 15 mass % or less, and the area percentage of a thin region, where the density of cementite carbides having a circle-equivalent diameter of 2 µm or more is low, is 3 % or less.
摘要翻译：公开了一种用于弹簧钢丝的弹簧钢，其在冷卷取中具有高强度和良好的可加工性。该弹簧钢以质量％计含有0.45％〜0.70％的Si，1.0％〜3.0％的Si，0.05〜2.0％的Mn，0.015％以下的P，0.015％以下的S，0.0015％〜 N的0.0200％，tO的0.0002〜0.01％，Al = 0.01％，Ti = 0.003％。还公开了使用这种弹簧钢的弹簧钢丝。弹簧钢的特征还在于，对于微观观察平面上的渗碳体球形碳化物，圆当量直径为0.2μm以上的碳化物占据的面积的百分比为7％以下，碳化物的密度圆当量直径为0.2μm〜3μm为1片/μm2以下，圆当量直径大于3μm的碳化物的密度为0.001片/μm^{2以下，原奥氏体的晶粒数为10以上，残留奥氏体的量为15质量％以下，并且具有含有碳化物的渗碳体的密度的薄区域的面积率 2倍以上的圆当量直径为3％以下。}

2. 发明公开

EP0943697A4 HIGH-TOUGHNESS SPRING STEEL 失效
标题翻译：霍夫斯特·费德斯塔
公开(公告)号：EP0943697A4
公开(公告)日：2002-12-04
申请号：EP98919508
申请日：1998-05-07
申请人： NIPPON STEEL CORP
发明人： HASHIMURA MASAYUKI , HAGIWARA HIROSHI , MIYAKI TAKANARI , BANNO TOSHIO
IPC分类号： C22C38/00 , C21D1/18 , C21D9/02 , C22C38/02 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/50 , C22C38/54
CPC分类号： C21D9/02 , C21D1/18 , C22C38/001 , C22C38/04 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/54 , Y10S148/908
摘要： A high-toughness spring steel having sufficient drawing and impact energy value at a high strength, particularly at a tensile strength of as high as 1,500 MPa or above, and having a composition comprising, in terms of mass %, 0.35 to 0.85 % of C, 0.9 to 2.5 % of Si, 0.1 to 1.2 % of Mn, 0.1 to 2.0 % of Cr, 0.005 to 0.07 % of Ti and 0.001 to 0.007 % of N, wherein Ti mass % > 4 x N mass %, P
摘要翻译：本发明提供了一种弹簧钢，其具有足够的面积减小和冲击韧性，而钢具有高的强度，特别是高达至少1,500MPa的拉伸强度。根据本发明的高韧性弹簧钢，以质量计含有C：0.35〜0.85％，Si：0.9〜2.5％，Mn：0.1〜1.2％，Cr：0.1〜2.0％，Ti：0.005〜0.07％，0.001〜0.007％的N，Ti含量大于N含量的四倍，以质量百分比计，P和S的限制含量分别小于0.020％且小于0.020％，余量为Fe 和不可避免的杂质，并且选择性地含有B，V，Nb，Ni，Mo和Cu。

3. 发明公开

EP2135967A4 FORGING STEEL 有权
标题翻译： SCHMIEDESTAHL
公开(公告)号：EP2135967A4
公开(公告)日：2011-01-19
申请号：EP08740529
申请日：2008-04-10
申请人： NIPPON STEEL CORP
发明人： SAITOH HAJIME , OCHI TATSURO , HASHIMURA MASAYUKI
IPC分类号： C22C38/00 , C21D1/06 , C22C38/18 , C22C38/60
CPC分类号： C22C38/04 , C21D1/06 , C21D8/06 , C22C38/06

4. 发明专利

BRPI1001251A2 aço para endurecimento por indução 未知
公开(公告)号：BRPI1001251A2
公开(公告)日：2016-02-16
申请号：BRPI1001251
申请日：2010-01-05
申请人： NIPPON STEEL CORP
发明人： MIZUNO ATSUSHI , SAITOH HAJIME , KUBOTA MANABU , HASHIMURA MASAYUKI , AISO TOSHIHARU
IPC分类号： C22C38/00 , C22C38/60

5. 发明专利

BRPI0710842A2 未知
公开(公告)号：BRPI0710842A2
公开(公告)日：2011-08-23
申请号：BRPI0710842
申请日：2007-12-25
申请人： NIPPON STEEL CORP
发明人： MIYANISHI KEI , HASHIMURA MASAYUKI , MIZUNO ATSUSHI , MIYAMOTO KENICHIRO
IPC分类号： C22C38/00 , C21D8/00 , C22C38/60

6. 发明专利

AU2010200638A1 Machine structural steel excellent in machinability and strength properties 未知
公开(公告)号：AU2010200638A1
公开(公告)日：2010-03-11
申请号：AU2010200638
申请日：2010-02-19
申请人： NIPPON STEEL CORP
发明人： HASHIMURA MASAYUKI , MIYAMOTO KENICHIRO , MIYANISHI KEI , MIZUNO ATSUSHI
IPC分类号： C22C38/00 , C21D8/00 , C22C38/60

7. 发明专利

BRPI0514009A 未知
公开(公告)号：BRPI0514009A
公开(公告)日：2008-05-27
申请号：BRPI0514009
申请日：2005-11-30
申请人： NIPPON STEEL CORP
发明人： HASHIMURA MASAYUKI , HAGIWARA HIROSHI , MIYAKI TAKANORI , KISU TAKAYUKI , YAMAZAKI KOUICHI
IPC分类号： C22C38/00 , C21D8/06 , C21D9/52 , C22C38/04 , C22C38/60 , F16F1/06

8. 发明专利

DE60224873D1 未知
公开(公告)号：DE60224873D1
公开(公告)日：2008-03-20
申请号：DE60224873
申请日：2002-02-07
申请人： NIPPON STEEL CORP , SUZUKI METAL INDUSTRY CO LTD , HONDA MOTOR CO LTD
发明人： HASHIMURA MASAYUKI , MIYAKI TAKANARI , HAGIWARA HIROSHI , HAYASHI HIROAKI , SUZUKI SHOUICH , SHIIKI KATSUAKI , YAMADA NORIYUKI , KOIKE SEIICHI
IPC分类号： C22C38/04 , F16F1/02 , C21D6/00 , C21D9/02 , C22C38/00 , C22C38/22 , C22C38/24 , C22C38/34
摘要： The present invention provides a steel wire, for springs excellent in coiling property while having a high strength, as a heat treated steel wire for high strength springs, characterized by: comprising, in mass, C: 0.75 to 0.85%, Si: 1.5 to 2.5%, Mn: 0.5 to 1.0%, Cr: 0.3 to 1.0%, P; not more than 0.015%, S: not more than 0.015%, N: 0.001 to 0.007%, W: 0.05 to 0.3%, and the balance consisting of Fe and unavoidable impurities; having a tensile strength of not less than 2,000 MPa; spheroidal carbides, composed of mainly cementite, observed in a microscopic visual field satisfying the area percentage of the spheroidal carbides not less than 0.2 mu m in circle equivalent diameter being not more than 7%, the density of the speroidal carbides 0.2 to 3 mu m in circle equivalent diameter being not more than 1 piece/ mu m , and the density of the speroidal carbides over 3 mu m in circle equivalent diameter being not more than 0.001 piece/ mu m ; the prior austenite grain size number being #10 or larger; the content of the retained austenite being not more than 12 mass %; the maximum diameter of carbides being not more than 15 mu m; and the maximum diameter of oxides being not more than 15 mu m.

9. 发明专利

DE19947393B4 未知
公开(公告)号：DE19947393B4
公开(公告)日：2005-03-24
申请号：DE19947393
申请日：1999-10-01
申请人： NIPPON STEEL CORP , SUZUKI METAL INDUSTRY CO
发明人： HASHIMURA MASAYUKI , HAGIWARA HIROSHI , MIYAKI TAKANARI , HAYASHI HIROAKI , SUZUKI SHOICHI , OCHIAI IKUO
IPC分类号： C22C38/02 , C21D1/18 , C21D9/52 , C22C38/00 , C22C38/06 , C22C38/18 , C22C38/34 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/38 , C21D9/02
摘要： This invention provides an oil-tempered wire having high strength (tensile strength of not less than 1960 MPa) and excellent workability and specifically provides a steel wire for high-strength springs comprising as steel components, in weight percent,the balance being Fe and unavoidable impurities, the steel wire having no nonmetallic inclusions of a size greater than 15 mum, a tensile strength of not less than 1960 MPa, and a yield ratio (sigma0.2/sigmaB) of not less than 0.8 and not greater than 0.9 or a yield ratio (sigma0.2/sigmaB) of not less than 0.8 and an amount of residual austenite of not greater than 6%. This invention also provides a method of producing the steel wire.

10. 发明专利

DE19947393A1 未知
公开(公告)号：DE19947393A1
公开(公告)日：2000-04-27
申请号：DE19947393
申请日：1999-10-01
申请人： NIPPON STEEL CORP , SUZUKI METAL INDUSTRY CO LTD
发明人： HASHIMURA MASAYUKI , HAGIWARA HIROSHI , MIYAKI TAKANARI , HAYASHI HIROAKI , SUZUKI SHOICHI , OCHIAI IKUO
IPC分类号： C22C38/02 , C21D1/18 , C21D9/52 , C22C38/00 , C22C38/06 , C22C38/18 , C22C38/34 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/38 , C21D9/02
摘要： This invention provides an oil-tempered wire having high strength (tensile strength of not less than 1960 MPa) and excellent workability and specifically provides a steel wire for high-strength springs comprising as steel components, in weight percent,the balance being Fe and unavoidable impurities, the steel wire having no nonmetallic inclusions of a size greater than 15 mum, a tensile strength of not less than 1960 MPa, and a yield ratio (sigma0.2/sigmaB) of not less than 0.8 and not greater than 0.9 or a yield ratio (sigma0.2/sigmaB) of not less than 0.8 and an amount of residual austenite of not greater than 6%. This invention also provides a method of producing the steel wire.

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