汽车防滑链用15Mn3钢丝编链断裂分析  

Braiding chain fracture analysis of 15Mn3 steel wire for automotive tire chain

作　　者：陈占杰[1] 段贵生[1] 杨陈莉[1] 杨晓奇[1] 

机构地区：[1]安阳钢铁股份有限公司,河南安阳455004

出　　处：《金属制品》2017年第3期44-47,共4页Metal Products

摘　　要：针对15Mn3钢丝在编制汽车防滑链过程中出现断裂的现象,采用化学成分分析、断口宏观及微观观察、显微组织分析、硬度检测等方法对断裂原因进行分析。结果表明,用户加工过程中,材料产生较大的加工硬化是造成防滑链断裂的主要原因。当材料表层洛氏硬度值为99.7 HRB时编链过程中会产生裂纹,试样硬度值为94.7 HRB能满足生产要求。用户通过改善拉拔加工工艺,降低加工硬化程度可避免后续编链断裂。Aiming at 15Mn3 steel wire fracture phenomenon appeared in the process of preparation of automotive tire chain, using chemical composition analysis, macro and microscopic observation of fracture, microstrueture analysis, hardness tes-ting methods to analyze fracture reasons. The results show that the large work hardening of material in user＇s manufaeturing process is the main cause of chain rupture. When the material surface Rockwell hardness value is 99.7 HRB generates a chain of crack, and sample hardness value is 94.7 HRB can meet the production requirements. Users by improving the drawing process, reducing the degree of strain hardening can avoid chain rupture in next step process.

关 键 词：汽车防滑链 15Mn3钢丝 编链断裂 加工硬化 硬度 

分 类 号：TG356.45[金属学及工艺—金属压力加工]