发明名称 |
Spring steel superior in workability |
摘要 |
A spring steel which is superior in both shaving properties and green drawing properties, which are important in spring production. A process for making the spring steel into wire rods for good springs. A rolled spring steel superior in workability characterized in that it has the following mechanical properties. Tensile strength ≤ 1200 MPa 30% ≤ reduction of area ≤ 70% A process for producing a steel wire rod for springs from said spring steel, said process comprising drawing, shaving, and oil tempering, which are carried out sequentially, said drawing being optionally followed by prescribed treatment. <IMAGE> |
申请公布号 |
EP1013780(A1) |
申请公布日期 |
2000.06.28 |
申请号 |
EP19990125316 |
申请日期 |
1999.12.20 |
申请人 |
KABUSHIKI KAISHA KOBE SEIKO SHO |
发明人 |
KURODA, TAKESHI;IBARAKI, NOBUHIKO;YOSHIHARA, NAO |
分类号 |
C22C38/44;C21D8/06;C21D9/02;C21D9/52 |
主分类号 |
C22C38/44 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|