| 发明名称 |
WIRE ROD AND METHOD FOR MANUFACTURING SAME |
| 摘要 |
A wire rod according to the present invention includes a predetermined chemical composition and the remainder thereof includes Fe and impurity, wherein the average value of a grain size of a pearlite block in a cross section perpendicular to a wire rod axial direction is 23µm or less, and wherein a number density of the pearlite blocks having a grain size of 40µm or more in the cross section perpendicular to the wire rod axial direction is 0 to 20 pieces/mm 2 . |
| 申请公布号 |
EP2990499(A4) |
申请公布日期 |
2017.01.04 |
| 申请号 |
EP20140788178 |
申请日期 |
2014.04.23 |
| 申请人 |
Nippon Steel & Sumitomo Metal Corporation |
发明人 |
OOBA Hiroshi;ISO Arata;TADA Tatsusei;MANABE Toshiyuki |
| 分类号 |
C22C38/00;B21B3/00;C21D1/613;C21D8/06;C21D9/00;C21D9/52;C22C38/02;C22C38/04;C22C38/06;C22C38/12;C22C38/14;C22C38/24;C22C38/28;C22C38/32 |
主分类号 |
C22C38/00 |
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