摘要
采用φ380mm圆坯连铸→开坯→连轧140mm2方坯→热机械轧制工艺路线,开发了高品质12.9级紧固件用合金冷镦钢线材SCM435。钢水洁净度高,盘条组织性能均匀,表面质量优良。用户已大批量使用,无拉拔断裂及冷镦开裂现象。
Wire rod of SCM435 alloyed cold-heading steel for high-grade 12. 9 class fastener was developed by the process route of φ380mm round bloom casting→Cogging → 140mm2 billet Tandem rolling →Thermomechanical rolling. The steel cleanliness was improved,microstructure was homogeneous and surface quality was excellent. The SCM435 wire rod has already been mass used by customers and no drawing fracture or coldheading cracking happened in processing.
出处
《安徽冶金》
2015年第1期14-16,共3页
Anhui Metallurgy
