不同回火热处理状态下9Mn2V的磨削加工表面质量研究  

Grinding Surface Condition of 9Mn2V Under Different Tempering Processes

作　　者：钱华[1] 董大鹏[1] 陈明[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《模具制造》2012年第6期87-90,共4页Die & Mould Manufacture

摘　　要：通过实验分析不同回火热处理状态下冷作模具钢9Mn2V的磨削表面质量,主要包括金相组织、显微硬度、表面粗糙度、表面形貌以及表面残余应力。实验结果表明,回火后磨削表面质量明显改善。同时,材料经过淬火后,表面有很大的残余拉应力,当材料经过二次回火后,该残余拉应力显著减小。This paper investigates the surface condition of 9Mn2V under different tempering processes, which includes metallographic structure, micro-hardness, surface roughness, surface morphology and surface residual stress. The experimental results indicated the ground surface quality improved evidently with the times of tempering increasing. Meanwhile the ground surface was in a state of high tensile residual stress after quenching. After the second time of tempering, the residual stress had significantly been reduced.

关 键 词：9Mn2V 回火 磨削表面 

分 类 号：TG156.2[金属学及工艺—热处理]