Q345B钢板折弯开裂原因分析及改进措施  

Reason Analysis and Improvement Measures of Cold Bending Cracking for Q345B Steel

作　　者：陈尹泽[1] 王立群[1] 温斌[1] 李娜[1] 

机构地区：[1]安阳钢铁集团有限责任公司,河南安阳455004

出　　处：《四川冶金》2017年第2期20-22,共3页Sichuan Metallurgy

摘　　要：针对Q345B钢卷板开平后在折弯过程中出现的开裂现象,对缺陷部位材料进行了金相、化学成分和力学性能的对比分析。分析认为MnS夹杂及带状组织是产生开裂的直接原因,通过优化成分,改进工艺,改善其性能指标,取得了良好效果。The fractures occurred in the process of the ：：old bending on the Q345B plates.The reason has been investigated by the microstructure,chemical composition and mechanical property of defect material. The results indicated that manganese sulfide inclusions and banded structure appeared at slab.It was believed that the fracture of Q345B was mainly caused by the sulfide inclusions and the microstructure segregation, its performance index is improved through the optimization of component content, and achieves good result.

关 键 词：Q345B钢 开裂 原因分析 措施中国 

分 类 号：TG142.15[一般工业技术—材料科学与工程]