C45E钢精冲质量缺陷与热轧工艺改进  

Fine Blanking Quality Defects and Hot Rolling Process Improvement of C45E Steel

作　　者：马植甄[1] 张晖[2] 

机构地区：[1]上海梅山钢铁股份有限公司技术中心,江苏南京210039 [2]安徽工业大学材料科学与工程学院,安徽马鞍山243002

出　　处：《热加工工艺》2014年第7期135-137,共3页Hot Working Technology

摘　　要：结合高档汽车零件用C45E中碳钢,分析了板坯精冲过程中出现的主要质量问题与热轧板组织的相互关系和解决措施。研究表明,精冲件折弯裂纹与热轧板精炼过程中的MnS夹杂物等级密切相关,边部毛边问题是球化退火不完全造成的,而精冲钢板的中心分层则与连铸过程中保护渣卷入有关。Combined with C45E medium carbon steel for the high-grade car parts, the relationship between the main quality problem in sheet fine blanking and microstructure of hot rolled sheet and solving measures of the problem were analyzed. Research shows that, bending cracks formed during blanking process is closely related to MnS inclusion level in refining process of the hot rolling plate. Edge burr problem is caused by the incomplete spheroidizing annealing and the center layering of the fine-blanking steel is relevant to entangling oforotective slag during continuous casting.

关 键 词：精冲件 热轧板 缺陷 

分 类 号：TG386.3[金属学及工艺—金属压力加工] TG142.1[一般工业技术—材料科学与工程]