基本信息:
- 专利标题： 一种冷镦钢线材的加热方法
- 专利标题（英）：Heating method for cold-heading steel wire
- 申请号：CN201310371375.4 申请日：2013-08-22
- 公开(公告)号：CN104419818A 公开(公告)日：2015-03-18
- 发明人： 孙军 , 彭学艺 , 刘百营 , 肖训军 , 黄俊文
- 申请人： 南京钢铁股份有限公司
- 申请人地址： 江苏省南京市六合区卸甲甸
- 专利权人： 南京钢铁股份有限公司
- 当前专利权人： 南京钢铁股份有限公司
- 当前专利权人地址： 江苏省南京市六合区卸甲甸
- 代理机构： 南京苏科专利代理有限责任公司
- 代理人： 姚姣阳
- 主分类号： C21D9/52
- IPC分类号： C21D9/52 ; C21D8/06 ; C21D11/00
The invention relates to a heating method for steel, and concretely relates to a heating method for a cold-heading steel wire. According to the heating method, the temperature target value at a heating first zone is set as 880 DEG C, the temperature target value at a heating second zone is set as 1000 DEG C and the temperature target value at a soaking zone is set as 1040 DEG C. By setting a reasonable excess air coefficient, the atmosphere in a furnace is adjusted into a reducing atmosphere; and the furnace pressure is adjusted to 5 Pa, so that external air is prevented from entering the furnace. By controlling the heating temperature, the excess air coefficient and the furnace pressure, the cold-heading steel SCM435 has a shallow decarbonized layer or does not have a decarbonized layer in a heating process, and the metallographic structure is extremely fine and uniform.
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 |
| ------C21D9/00 | 热处理，例如适合于特殊产品的退火、硬化、淬火、回火；所用的炉子 |
| --------C21D9/52 | .用于线材；带材 |