SWRCH35K冷镦钢盘条表面组织异常原因分析  

Analysis of Abnormal Surface Microstructure of Cold Heading Steel Wire Rod

作　　者：孙维[1] 汪开忠[1] 高长松[2] 唐萍[3] 杨浩[3] 

机构地区：[1]马鞍山钢铁股份有限公司技术中心,安徽马鞍山243000 [2]马鞍山钢铁股份有限公司生产部,安徽马鞍山243000 [3]重庆大学材料科学与工程学院,重庆400030

出　　处：《安徽工业大学学报（自然科学版）》2010年第2期140-144,共5页Journal of Anhui University of Technology（Natural Science）

基　　金：国家科技支撑计划项目(2007BAE30B01)

摘　　要：采用实验室研究结合工业性试验的方法,分析SWRCH35K冷镦钢热轧盘条表层微观组织异常现象。结果表明盘条表层异常微观组织为魏氏组织,魏氏组织是钢的过热缺陷组织,该组织使钢的韧性和塑性显著降低,钢易冷镦开裂。实施相应的改进措施后,SWRCH35K冷镦钢热轧盘条表层微观组织的均匀性得到提高,冷镦性能得到改善。Combining industrial test with laboratory research, the abnormal surface microstructure of hot-rolled cold heading steel SWRCH35K wire rod was analyzed. The abnormal surface microstructure was considered Widmanstatten structure, which is a kind of overheating defects in steel. Widmanstatten structure makes the steel toughness and plasticity significantly reduced, thereby makes the steel crack easily during cold heading process. In the end, the measures were proposed and the uniformity of surface microstructure of SWRCH35K wire rod was improved.

关 键 词：冷镦钢 盘条 微观组织 

分 类 号：TG335[金属学及工艺—金属压力加工]