摘要
分析了马钢低碳冷镦钢系列、自攻螺钉系列、中碳冷镦钢系列、免退火系列、超细晶粒非调质钢线材质量异议的主要原因,即表面裂纹、折叠、划伤引发了表面开裂;成分偏析、组织结构异常及非金属夹杂物导致性能不均匀;热处理工艺及冷成型工艺不当造成加工缺陷,据此提出了相应的改进措施,使质量异议比例下降65%以上。
The causes induced quality problems of cold-heading steel wire and rods of low carbon steel, screw steel, medium carbon steel, no-annealing steel, etc. , were analyzed, which were surface crack, slivery, scratch, segregation, microstructure abnormal, heat treatment process and cold forming process unreasonable. Meanwhile, the countermeasures were put forward, and the ration of quality problem products was decreased over 65%.
出处
《轧钢》
北大核心
2009年第6期67-70,共4页
Steel Rolling
关键词
冷镦钢
线材
表面缺陷
组织
冷加工
cold-heading steel
wire and rod
surface defect
microstructure
cold forming
