高性能500MPa冷冲压汽车桥壳用钢研制  

Development of 500 MPa High-performance Cold Stamping Automobile Axle Housing Steel

作　　者：高军[1] 尚秀廷[1] 贾瑞杰 Gao Jun;Shang Xiu-ting;Jia Rui-jie(CSP Plant of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古包钢钢联股份有限公司薄板坯连铸连轧厂,内蒙古包头014010

出　　处：《包钢科技》2022年第4期41-45,共5页Science & Technology of Baotou Steel

摘　　要：文章阐述了500 MPa级冷冲压汽车桥壳用钢板的生产工艺及技术改进,设计了以铌钛铬钼为主要强化元素的化学成分,制定了包括冶炼、连铸、加热、轧制、冷却等在内的一系列完整的生产工艺。该钢板具有强度高、塑韧性高、复杂的冷冲压不开裂和同板差小及各向异性小等综合特性,生产工艺成熟且稳定,极大程度降低了冷冲压成形过程中的开裂几率,满足汽车桥壳用钢技术要求,降低了加工成本。In the paper,the production technology and technological improvement for 500 MPa cold stamping automobile axle housing steel plate are elaborated,the chemical components of Nb,Ti,Cr and Mo as main strengthening elements are designed as well as a series of whole production technology including smelting,continuous casting,heating,rolling and cooling is formulated.The steel plate is with such comprehensive properties as high strength and ductility and toughness,complex cold stamping without cracking as well as small thickness fluctuation on one plate and anisotropy.Its production technology is mature and stable so that the probability of cracking in cold stamping process is greatly reduced,which could meet the technical requirements of automobile axle housing steel and the processing cost is reduced.

关 键 词：冷冲压成形 500 MPa桥壳钢 宽厚钢板 

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