激光处理压铸用模具钢的耐磨性能研究  

Wear Resistance of Die Casting Die of Cover Lid of Engine by Laser Treatment

作　　者：陈莉[1,2] 赵宇[1,2] 周宏[2] 任露泉[3] 

机构地区：[1]长春工业大学材料科学与工程学院 [2]吉林大学汽车材料教育部重点实验室 [3]吉林大学地面仿生国家重点实验室

出　　处：《特种铸造及有色合金》2008年第3期201-203,共3页Special Casting & Nonferrous Alloys

基　　金：国家高技术研究发展计划(863计划)资助项目(2002AA331180)

摘　　要：利用激光在3Cr2W8V模具钢表面加工出具有不同间隔的条状和网状非光滑单元体,对比研究了光滑和非光滑表面试样的磨料耐磨性能。结果表明,激光处理的各种非光滑表面试样耐磨性能均优于未处理的光滑表面试样,间隔为2mm的网状非光滑试样耐磨性能约为光滑表面试样的1.99倍,条状试样的约为光滑试样的1.63倍;非光滑单元体间隔分别为0、1、2、4mm时,非光滑试样耐磨性能相对光滑试样分别提高了56%、76%、63%和39%。将此方法应用到生产汽车发动机罩盖的模具上后,模具的耐磨性能和使用寿命大大提高。The wear resistance of specimens with smooth and non-smooth surface was compared by processing the striate and reticulate non-smooth surfaces in different distributing distance on the 3Cr2W8V tool steel with laser treatment.The results show that the wear resistance of processed non-smooth surfaces is obviously superior to that of un-treated smooth surface.In addition,the wear resistance of reticulate non-smooth surface of the specimens is superior to that of striate ones.Furthermore,the wear resistance is improved with the decrease of distributed distance of non-smooth unit.The practical production verifies that the wear resistance and service life of the die casting die for cover lid of engine are significantly improved.

关 键 词：模具 激光处理 磨料磨损 

分 类 号：TG665[金属学及工艺—金属切削加工及机床]