Cold Bending Cracking Analysis of BM510 Steel Plates for Automobile Frames
摘 要
BM510汽车大梁钢板经冷弯加工时在折弯部位外侧出现裂纹;为查找开裂原因,对其进行了化学成分、力学性能、OM、SEM、EDS及连铸工艺分析.结果表明:汽车大梁钢折弯开裂是由于夹杂物异常偏聚造成的;为消除夹杂物异常偏聚采取的主要措施是控制连铸过程中的拉速,避免拉速波动过大.
Abstract
The cracking of BM510 steel plates for automobile frames happened in the process of cold bending.The chemical compositions,mechanical properties,optical microscopy ,SEM and EDS,continuous casting process had been analyzed.The results show that the cold bending cracking of BM510 steel plates for automobile frames were caused by the inclusions aggregated unconventionally.The measure for reducing the inclusion aggregation is to control the casting speed and avoid high fluctuation of casting speed.
中图分类号 TG143.41
所属栏目 失效分析
基金项目
收稿日期 2007/11/1
修改稿日期 2008/4/3
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备注赵楠(1977-),女,山东诸城人,工程师,硕士.
引用该论文: ZHAO Nan,MU Hai-ling,ZHOU Li-ping,CAO Bo-rui,ZHAO Jian-guo. Cold Bending Cracking Analysis of BM510 Steel Plates for Automobile Frames[J]. Materials for mechancial engineering, 2008, 32(11): 72~74
赵楠,穆海玲,周丽萍,曹博蕊,赵建国. BM510汽车大梁钢冷弯开裂原因分析[J]. 机械工程材料, 2008, 32(11): 72~74
被引情况:
【1】赵楠,周丽萍,黄绪传,穆海玲, "BM510L汽车大梁钢的连续冷却转变曲线",机械工程材料 38, 38-40(2014)
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参考文献
【1】杨晓江,郝华强,薛贵军.薄板坯连铸的粘结及预防(续)[J].河北冶金,2004(4):38-40.
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