
基本信息:
- 专利标题: 一种低温工程机械用钢及其生产方法
- 专利标题(英):Low-temperature steel for engineering machinery and production method thereof
- 申请号:CN201110343410.2 申请日:2011-11-03
- 公开(公告)号:CN102409233A 公开(公告)日:2012-04-11
- 发明人: 潘辉 , 张鹏程 , 李永东 , 李飞 , 董现春 , 武军宽 , 牛涛 , 李海波 , 朱国森 , 章军 , 王学强 , 郭佳
- 申请人: 首钢总公司
- 申请人地址: 北京市石景山区石景山路68号
- 专利权人: 首钢总公司
- 当前专利权人: 首钢总公司
- 当前专利权人地址: 北京市石景山区石景山路68号
- 代理机构: 首钢总公司专利中心
- 代理人: 张镝
- 主分类号: C22C38/14
- IPC分类号: C22C38/14 ; B21B37/74
The invention relates to low-temperature steel for engineering machinery and a production method thereof. The steel is suitable for higher heat input welding and comprises the following chemical components by weight percent: 0.06-0.08% of C, 0.15-0.25% of Si, 1.6-1.9% of Mn, 0.05-0.07% of Nb, 0-0.30% of Mo, 0-0.0020% of B, 0.08-0.14% of Ti, 0.01-0.06% of Al, not more than 0.02% of P, not more than 0.010% of S, not more than 0.008% of N and the balance of Fe and inevitable impurities. The production method is characterized by controlling the heating temperature, precision rolling inlet temperature, finish rolling temperature, finished cooling temperature and annealing temperature. The material can ensure the transverse universal coiling impact energy at minus 20 DEG C to be more than 47J, and meanwhile, the HAZ (heat affected zone) strength and toughness of the steel plate can meet the mechanical property requirements of the base metal under 20KJ/cm welding property energy.
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 |
--------C22C38/14 | .含钛或锆的 |