汽车大梁钢成型开裂的研究现状  

Research status of forming cracking of automobile girder steel

作　　者：孙红智 单庆林[2,3] 张源 任树洋 田亚强 郭晓雨 郑小平 陈连生 SUN Hongzhi;SHAN Qinglin;ZHANG Yuan;REN Shuyang;TIAN Yaqiang;GUO Xiaoyu;ZHENG Xiaoping;CHEN Liansheng(College of Metallurgy and Energy,North Chin a University of Science and Technology,Tangshan 063210,Hebei,China;Tangshan Iron and Steel Group Co.,Ltd.,Tangshan 063000,Hebei,China;Hebei Engineering Research Center of High Quality Steel Continuous Casting,Tangshan 063000,Hebei,China)

机构地区：[1]冶金与能源学院华北理工大学,河北唐山063210 [2]唐山钢铁集团有限责任公司,河北唐山063000 [3]河北省高品质钢连铸技术研究中心,河北唐山063000

出　　处：《四川冶金》2024年第3期7-11,共5页Sichuan Metallurgy

基　　金：河北省自然科学基金重点基金项目(E2022209049)。

摘　　要：汽车大梁钢在成型过程中易出现折弯开裂、焊接裂纹、辊压开裂等缺陷,导致大梁钢的利用率下降,企业经济效益降低。这引起了科研人员的关注,并对大梁钢成型开裂原因开展了大量的研究工作。本文从成分偏析、大尺度夹杂、组织异常、热轧工艺等角度,详细概述了汽车大梁钢成型开裂的因素,并分别提出了解决措施,最后展望了汽车大梁钢生产的前景。The defects such as bending cracking,welding cracking and rolling cracking are easy to appear in the forming process of automobile girder steel,which leads to the decrease of the utilization rate of girder steel and the decrease of economic benefit of enterprises.This has attracted the attention of researchers,and a lot of research work has been carried out on the causes of molding cracking of automobile girder steel.In this paper,the factors of forming cracking of automobile girder steel are summarized in detail from the aspects of component segregation,large scale inclusion,abnormal structure and hot rolling process,and the solutions are put forward respectively.Finally,the production prospect of automobile girder steel is prospected.

关 键 词：汽车大梁钢 成型开裂 研究现状 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG335.3[金属学及工艺—金属材料]