发明申请
US20180187277A1 HIGH-TOUGHNESS SEAMLESS STEEL TUBE FOR AUTOMOBILE SAFETY AIRBAG AND MANUFACTURING METHOD THEREFOR
审中-公开
基本信息:
- 专利标题： HIGH-TOUGHNESS SEAMLESS STEEL TUBE FOR AUTOMOBILE SAFETY AIRBAG AND MANUFACTURING METHOD THEREFOR
- 申请号：US15321189 申请日：2015-01-14
- 公开(公告)号：US20180187277A1 公开(公告)日：2018-07-05
- 发明人： Guoli Zhai , Qingchao Tian , Qijiang Wang , Cailing Liu
- 申请人： BAOSHAN IRON & STEEL CO.,LTD.
- 申请人地址： CN Shanghai
- 专利权人： BAOSHAN IRON & STEEL CO.,LTD.
- 当前专利权人： BAOSHAN IRON & STEEL CO.,LTD.
- 当前专利权人地址： CN Shanghai
- 优先权： CN201410290460.2 20140625
- 国际申请： PCT/CN2015/070662 WO 20150114
- 主分类号： C21D8/10
- IPC分类号： C21D8/10 ; C22C38/48 ; C22C38/46 ; C22C38/44 ; C22C38/58 ; C22C38/42 ; C22C38/06 ; C22C38/02 ; C21D9/08
摘要：
A high strength and toughness seamless steel tube for an automobile airbag, comprising the following elements, by wt %: C: 0.05-0.15%; Si: 0.1-0.45%; Mn: 1.0-1.9%; Ni: 0.1-0.6%; Cr: 0.05-1.0%; Mo: 0.05-0.2%; Cu: 0.05-0.50%; Al: 0.015-0.060%; Nb: 0.02-0.1%; V: 0.02-0.15%; and the balance being Fe and other inevitable impurities. A method for manufacturing the seamless steel tube comprises the steps: (1) heating a tube blank and then soaking; (2) hot piercing, reducing the diameter and the wall thickness of the tube blank with a stretch reducer and then cooling naturally; (3) annealing, pickling, phosphating and saponifying; (4) cold working to obtain a finished product size; and (5) carrying out stress relief annealing treatment.
公开/授权文献:
IPC结构图谱:
| C | 化学；冶金 |
| --C21 | 铁的冶金 |
| ----C21D | 改变黑色金属的物理结构；黑色或有色金属或合金热处理用的一般设备；通过脱碳、回火或其他处理使金属具有韧性 |
| ------C21D7/00 | 通过变形改变铁或钢的物理性能 |
| --------C21D8/10 | .在生产管状体时 |