发明申请
WO2010016702A3 ENVIRONMENTALLY-FRIENDLY, PB-FREE FREE-MACHINING STEEL, AND MANUFACTURING METHOD FOR SAME
审中-公开
基本信息:
- 专利标题: ENVIRONMENTALLY-FRIENDLY, PB-FREE FREE-MACHINING STEEL, AND MANUFACTURING METHOD FOR SAME
- 专利标题(中):环保型,无铅自由加工钢及其制造方法
- 申请号:PCT/KR2009004329 申请日:2009-08-03
- 公开(公告)号:WO2010016702A3 公开(公告)日:2010-06-10
- 发明人: AHN SANG-BOG , LEE HYONG-JIK , RHEE KI-HO , LEE DUK-LAK
- 申请人: POSCO , AHN SANG-BOG , LEE HYONG-JIK , RHEE KI-HO , LEE DUK-LAK
- 专利权人: POSCO,AHN SANG-BOG,LEE HYONG-JIK,RHEE KI-HO,LEE DUK-LAK
- 当前专利权人: POSCO,AHN SANG-BOG,LEE HYONG-JIK,RHEE KI-HO,LEE DUK-LAK
- 优先权: KR20080077067 2008-08-06; KR20090018464 2009-03-04
- 主分类号: C22C38/00
- IPC分类号: C22C38/00 ; C21D8/06 ; C22C38/04 ; C22C38/38
摘要:
The present invention relates to a PB-free free-machining steel containing, by weight %, C: 0.03 ~ 0.13%, Si: 0.1% or lower, Mn: 0.7 ~ 2.0%, P: 0.05 ~ 0.15%, S: 0.2 ~ 0.5%, B: 0.001 ~ 0.01%, Cr: 0.1 ~ 0.5%, Ti: 0.05 ~ 0.4%, N: 0.005 ~ 0.015%, O: 0.03% or lower, the remainder being Fe and other inevitable impurities. The PB-free free-machining steel may contain MnS inclusions with a particle size of 5µm2 or larger, existing in the numbers of 300 to 1000 per material mm2 at the cross-section of the rolling direction of a wire rod. Further, the present invention relates to a method for manufacturing environmentally-friendly, PB-free free-machining steel by properly controlling the total amount of oxygen in the process of manufacturing a steel material.
摘要(中):
本发明涉及一种不含PB的自由加工钢,其含有C:0.03〜0.13%,Si:0.1%以下,Mn:0.7〜2.0%,P:0.05〜0.15%,S:0.2 〜0.5%,B:0.001〜0.01%,Cr:0.1〜0.5%,Ti:0.05〜0.4%,N:0.005〜0.015%,O:0.03%以下,余量为Fe等不可避免的杂质。 无铅自由加工钢可以含有粒径为5μm2以上的MnS夹杂物,在线材的轧制方向的横截面上以每个材料mm2的数量存在300〜1000个。 此外,本发明涉及通过在制造钢材的过程中适当地控制氧的总量来制造环保的无PB自由加工钢的方法。
公开/授权文献:
IPC结构图谱:
C | 化学;冶金 |
--C22 | 冶金(铁的冶金入C21);黑色或有色金属合金;合金或有色金属的处理 |
----C22C | 合金 |
------C22C38/00 | 铁基合金,例如合金钢 |