基本信息:
- 专利标题： 一种超低碳贝氏体钢板的轧制方法
- 申请号：CN201810100253.4 申请日：2018-02-01
- 公开(公告)号：CN108296285B 公开(公告)日：2019-07-30
- 发明人： 彭宁琦 , 汤伟 , 罗登 , 史术华 , 范明 , 李中平 , 刘丹 , 熊祥江 , 陈奇明
- 申请人： 湖南华菱湘潭钢铁有限公司
- 申请人地址： 湖南省湘潭市岳塘区钢城路
- 专利权人： 湖南华菱湘潭钢铁有限公司
- 当前专利权人： 湖南华菱湘潭钢铁有限公司
- 当前专利权人地址： 湖南省湘潭市岳塘区钢城路
- 代理机构： 长沙新裕知识产权代理有限公司
- 代理人： 李由
- 主分类号： B21B1/34
- IPC分类号： B21B1/34 ; B21B37/74 ; B21B37/28 ; B21B37/44 ; B21B15/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/12 ; C22C38/14 ; C22C38/16 ; C22C38/20 ; C22C38/22 ; C22C38/26 ; C22C38/28 ; C22C38/32 ; C22C38/38 ; C22C38/42 ; C22C38/44 ; C22C38/48 ; C22C38/50 ; C22C38/54 ; C22C38/58
The invention discloses a rolling method of an ultralow carbon bainite steel plate. Steel is prepared from the following chemical components in percentage by weight: smaller than or equal to 0.05 percent of C, smaller than or equal to 0.50 percent of Si, 1.0-2.0 percent of Mn, smaller than or equal to 0.015 percent of P, smaller than or equal to 0.002 percent of S, 0.01-0.05 percent of Als, 0.03-0.08 percent of Nb, 0.01-0.03 percent of Ti, smaller than or equal to 0.3 percent of Cr, smaller than or equal to 0.3 percent of Mo, smaller than or equal to 0.3 percent of Ni, smaller than or equal to0.3 percent of Cu, smaller than or equal to 0.0005 percent of B and the balance of Fe and inevitable impurities. According to the rolling method provided by the invention, through three-segmentationcontrolled rolling of a high-temperature recrystallization region, a static recrystallization region and non-recrystallization region, by combining with a multipass relaxation technology and technologies including segmentation type controlled cooling, low-temperature low-speed multipass straightening and the like, very fine and uniform bainite structure is acquired and is very excellent in low-temperature toughness, and the steel plate is good in flatness and meets the requirement for online finishing.
公开/授权文献:
- CN108296285A 一种超低碳贝氏体钢板的轧制方法 公开/授权日：2018-07-20
IPC结构图谱:
| B | 作业；运输 |
| --B21 | 基本上无切削的金属机械加工；金属冲压 |
| ----B21B | 金属的轧制 |
| ------B21B1/00 | 金属轧制的方法或制造实心半成品或成型截面的轧机；轧机机列内的加工序列；轧制车间的布置，如机座的分组，轧道的顺序或分轧道变换的顺序 |
| --------B21B1/02 | .轧制截面形状不重要的重型工件，如锭、板坯、坯 |
| ----------B21B1/24 | ..在连续过程中 |
| ------------B21B1/32 | ...在逆可轧机中，如带有聚集工件用的中间存储卷筒的 |
| --------------B21B1/34 | ....用热轧方法 |