STEEL WIRE ROD WITH EXCELLENT SPRING WORKABILITY FOR HIGH-STRENGTH SPRING, PROCESS FOR MANUFACTURING SAME, AND HIGH-STRENGTH SPRING

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专利权人:

Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

发明人:

OURA, Hiroshi,YOSHIHARA, Nao

申请号：

EP20130757200

公开号：

EP2824205(B1)

申请日:

2013.02.25

申请国别(地区):

欧洲专利局

年份:

2017

代理人:

摘要：

The high-strength spring steel wire rod of the present invention is a steel wire rod obtained after hot rolling, the steel wire rod having a predetermined chemical component composition and a structure with a pearlite area ratio of 90% or more, and meeting the requirements of the following formulae (1) and (2) wherein Pave is an average of grain size numbers of pearlite nodules and Pà is a standard deviation thereof. 8.0 ‰¤ Pave ‰¤ 12.0 0.0 < Pà ‰¤ 0.5

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/