摘要
对热轧SPHC低碳铝镇静带钢样品在冷轧时出现的边裂缺陷进行了检测分析和热模拟研究。结果表明,主要是薄规格SPHC钢在热轧过程中边部温度损失大,终轧温度较低,其微观组织存在较严重的纤维状,导致材料塑性较差,在后续冷轧时产生边裂问题。提高出炉温度、优化除磷工艺、提高中间坯厚度等措施可有效改善边裂缺陷。
The hot rolled SPHC low carbon aluminum killed steel samples which has edge cracking defect during cold rolling were tested and studied by thermal simulation. The results show that it is mainly due to large loss of edge temperature in the hot rolling process of thin SPHC steel and low finish rolling temperature. The steel has serious fibrous microstructure,which leads to poor plasticity of the material and the edge cracking problem in the subsequent cold rolling process. The edge crack defects can be effectively improved by raising the tapping temperature, optimizing the descaling process and increasing the thickness of the intermediate blank.
作者
王进
裴新华
黄绪传
夏小明
WANG Jin;PEI Xinhua;HUANG Xuchuan;XIA Xiaoming(R&D Center for Meisteel of Baosteel Central Research Institute,Nanjing 210039,China;Shanghai Meishan Iron&Steel Co.,Ltd.,Nanjing 210039,China)
出处
《热加工工艺》
北大核心
2020年第7期157-159,162,共4页
Hot Working Technology
关键词
低碳钢SPHC
边裂
纤维状组织
终轧温度
low carbon steel SPHC
edge cracking
fibrous microstructure
finish rolling temperature
