冲头表面毛化形貌参数对板料杯突值影响的试验  

Influence experiment of punch laser texturing morphology on sheet metal erichsen value

作　　者：符昊[1] 杨烨刚 符永宏[1] 王浩[1] 杨守军[1] 

机构地区：[1]江苏大学机械工程学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2015年第4期461-464,共4页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51175233);江苏省科技支撑计划项目(BE2010060);江苏省科技成果转化专项(BA2010068);江苏省高校科研成果产业化推进项目(JHB2011-39);江苏省"六大人才高峰"项目(08-B-04);高等学校博士学科点专项科研基金资助项目(20113227110016)

摘　　要：对钢球冲头进行激光毛化处理,在表面得到不同几何参数的球冠状毛化形貌,将其在杯突试验机上进行杯突试验,考察冲头表面不同毛化形貌参数对杯突值的影响规律.结果表明:随着钢球表面毛化形貌参数和分布的改变,板材的杯突值随之变化.经激光毛化处理的钢球冲头,其板材的杯突值减小,最大减小幅度达7.99%;破裂圆的直径增加,破裂关键点远离球顶,向外移动最大距离为2.125 mm;未拉裂杯突试验成形件在球顶和破裂圆之间的厚度大于未造型钢球.球顶板料的厚度随着杯突值的减小而增加,厚度最大增加幅度为8.26%,造型后半球形件最薄处厚度的增加幅度达到2.81%.Steel ball punch surface were laser textured to acquire sombrero shaped textures with different geometric parameters. The cup drawing experiments were conducted on microcomputer screen automatic cup drawing test machine. The influence of texture parameters on erishen value was investigated. The results show that the erishen values change with the texture parameters and distribution on steel ball punch surface. The erishen value of steel ball punch is decreased after laser textured treatment with the maximum decline of 7. 99%. With the increasing of rupture circle diameter,failure key point removes away from the top of ball with the maximum distance outward moving of 2. 125 mm. The thickness of no cracking cup drawing forming parts between ball top and rupture circle is greater than that of smooth ball.The thickness of sheet metal on ball top is increased with the decreasing of erichsen value,and the thickness of the maximum increasing reaches 8. 26%. The thickness of hemispherical part at the thinnest point is increased by 2. 81% after laser texturing.

关 键 词：激光毛化 球冠状 杯突试验 杯突值 模具 

分 类 号：TG76[金属学及工艺—刀具与模具]