优化SPHC钢种冷轧基板力学性能的生产实践  

Production Practice of Optimizing the Mechanical Properties of SPHC Sheet Steel for Cold Rolling

作　　者：陈燕[1] 王德厚[1] 李庆[1] 

机构地区：[1]山东泰山钢铁集团有限公司,山东莱芜271100

出　　处：《山东冶金》2016年第5期3-4,共2页Shandong Metallurgy

摘　　要：针对SPHC钢种冷轧基板屈服强度和屈强比偏高的问题，分析认为是基板晶粒度级别较高所致。通过采取优化加热温度和在炉时间、控制精轧终轧温度、轧后层流冷却采用后段冷却方式等工艺优化措施，屈服强度由310MPa降至270MPa，屈强比由0.81降至0．77，晶粒度由10．5-11．0级降至8．5-10．0级，钢带性能稳定。For the problem of higher yield strength and higher yield ratio of SPHC sheet steel for cold rolling, analyses showed that the grain fineness of the substrate is higher grade. By optimizing the heating temperature and time in the furnace, controlling final finish roiling temperature, adopting posterior segment cooling after rolling laminar cooling and taking other process optimization measures, the yield strength was reduced from 310 MPa to 270 MPa, the yield ratio was reduced from 0.81 to 0.77, the grain fineness was reduced from 10.5-11.0 to 8.5-10.0, and the properties of steel strip is stable.

关 键 词：SPHC钢 冷轧基板 屈服强度 屈强比 控轧控冷 弛豫 

分 类 号：TG335.5[金属学及工艺—金属压力加工]