发明授权
- 专利标题： Steel wire for hard drawn spring excellent in fatigue strength and resistance to settling, and hard drawn spring and method of making thereof
- 专利标题（中）： 疲劳强度和耐沉降性优异的硬拉伸弹簧钢丝，硬拉伸弹簧及其制造方法
-
申请号： US10508945申请日： 2003-03-26
-
公开(公告)号： US07597768B2公开(公告)日： 2009-10-06
- 发明人: Sumie Suda , Nobuhiko Ibaraki , Nao Yoshihara , Shigetsugu Yoshida , Koji Harada
- 申请人： Sumie Suda , Nobuhiko Ibaraki , Nao Yoshihara , Shigetsugu Yoshida , Koji Harada
- 申请人地址： JP Kobe-shi JP Kyoto-shi
- 专利权人： Kabushiki Kaisha Kobe Seiko Sho,Suncall Corporation
- 当前专利权人： Kabushiki Kaisha Kobe Seiko Sho,Suncall Corporation
- 当前专利权人地址： JP Kobe-shi JP Kyoto-shi
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2002-100359 20020402; JP2002-100361 20020402
- 国际申请： PCT/JP03/03700 WO 20030326
- 国际公布： WO03/083151 WO 20031009
- 主分类号： C22C38/22
- IPC分类号： C22C38/22 ; C22C38/40 ; C22C38/18 ; C21D8/06 ; C21D9/52
摘要：
Disclosed is a hard-drawn spring which exhibits fatigue strength and sag resistance equal or superior to springs produced using an oil-tempered wire. The hard-drawn spring is produced using a steel wire containing 0.5 to 0.7 mass % of C, 1.0 to 1.95 mass % of Si, 0.5 to 1.5 mass % of Mn and 0.5 to 1.5 mass % of Cr, with the balance being Fe and inevitable impurities. In the steel wire, the number of carbides having circle-equivalent diameters of 0.1 μm or more is 5 particles/100 μm2 or less.
公开/授权文献
信息查询
