摘要
针对用户在拉拔过程中出现了多次断裂现象,对断口形貌、组织和成分分析,得知铸坯碳偏析是造成82B盘条拉拔脆断的主要原因,且拉拔脆断与B类脆性夹杂物也有一定关系。同时提出采用无铝脱氧工艺、降低铸坯碳偏析工艺及合理控制轧后冷却速度等改进措施。
Based on many fracture phenomenons during the drawing process,fracture morphology,microstructure and composition were analyzed.It is considered that the carbon segregation of the cast billet was the main reason for the fracture during drawing of SWRH82B wire rod,meanwhile,there was also a certain relationship between the drawing brittleness and the B type brittle inclusions.For that reason,the corresponding improvement measures were put forward,including the use of aluminum free deoxidization process,reduction of carbon segregation in casting billets,and reasonable control of cooling rate after rolling.
作者
赵满堂
邹虎
Zhao Mantang;Zou Hu(Wuhu Xinxing Pipe casting Co.,Ltd)
出处
《安徽冶金》
2018年第2期33-36,共4页
Anhui Metallurgy
关键词
SWRH82B
笔尖断口
碳偏析
工艺改进
SWRH82B
penpoint fracture
carbon segregation
process improvement
