首钢二炼钢160mm×160mm小方坯连铸使用高碳钢类型FRK-45型保护渣生产含碳量在0.35～0.50%钢时，连铸坯表面出现大量的纵向裂纹和横向凹坑缺陷。通过降低连铸机拉速，提高保护渣的碱度，延缓保护渣熔化速度，改善铸坯坯壳与结晶器壁间之间渣膜的传热等技术措施，使铸坯的表面缺陷得到了有效的控制。
A lot of surface longitudinal cracks and transverse pits were observed on 160mm×160mm billets containing 0.35~0.50% carbon and produced by high carbon steel mould fluxes in No. 2 steelmaking plate of Shougang Group.These surface defects have been effectively controlled by improving the basicity of mould fluxes, prolonging the dissolve rate of mould fluxes and improving the heat transfer between mould wall and billet shell.
参考文献
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%