SPA-H(Cr)轧后边部结疤及线状缺陷的分析与控制
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- 英文论文题名：Analysis and Control Measures of Scar and Linear Defects of SPA-H(Cr)
- 论文作者：李鹏 ; 陈国威 ; 唐中队 ; 周琦 ; Qin shimin
- 英文论文作者：Li peng ; Chen Guo-wei ; Tang Zhong-dui ; Zhou Qi ; Qin shimin ; Steel making plant of WISCO
- 年：2016
- 作者机构：武钢股份炼钢总厂;
- 论文关键词：SPA-H(Cr) ; 边部结疤 ; 线状缺陷 ; 表面裂纹
- 英文论文关键词：scar on the boundary ; linear defects ; slab surface cracks
- 会议召开时间：2016-05-19
- 会议录名称：第十九届（2016年）全国炼钢学术会议大会报告及论文摘要集
- 语种：中文
- 分类号：TG335
- 学会代码：ZGJS
- 会议名称：第十九届（2016年）全国炼钢学术会议
- 会议地点：中国湖南长沙
- 主办单位：中国金属学会炼钢分会
- 学会名称：中国金属学会
- 页数：1
- 文件大小：40k
- 原文格式：O
- 会议级别：全国
摘要
SPA-H(Cr)轧后结疤和裂纹缺陷分别占总缺陷量的42.20%和21.49%,分析其与铸坯表面裂纹有一定关系。在此基础上,从控制钢水成分、优化保护渣使用和调整二次冷却参数3个方面改进,使轧后改判率从2014年以前的0.41%降低到目前的0.18%。
scarring and linear defects,respectively account for 42.20%and 21.49%of the total amount of defects,are the main problems of SPA-H(Cr) hot rolled coil,through analysis we know that their generation have a certain relationship with the slab surface cracks.Based on the above analysis,the improvement in three aspects that controlling the compositions of molten steel,improving the mould slag and adjustment the second cooling parameters are operated in this article,by which the judgement-changing rate after rolling was reduced to 0.18%nowadays from 0.41%of the year 2014.
scarring and linear defects,respectively account for 42.20%and 21.49%of the total amount of defects,are the main problems of SPA-H(Cr) hot rolled coil,through analysis we know that their generation have a certain relationship with the slab surface cracks.Based on the above analysis,the improvement in three aspects that controlling the compositions of molten steel,improving the mould slag and adjustment the second cooling parameters are operated in this article,by which the judgement-changing rate after rolling was reduced to 0.18%nowadays from 0.41%of the year 2014.
引文