45上顶板锻造工艺改进  

Improvement on 45 Upper Top Plate Forging Process

作　　者：陈辉[1] 李彦初[1] 屈学茂[1] 赵英亮[1] 王明凯[1] 

机构地区：[1]棒材厂

出　　处：《莱钢科技》2009年第2期10-11,共2页Laigang Science & Technology

摘　　要：45上顶板镦粗工序采用预镦粗及旋转进砧相结合的方法，预镦粗变形量40％～60％，旋转进砧砧宽比W／H0．5～1，压下率εh10％～15％，有效避免了RST效应的产生，高径比≤0．3饼类锻件应用效果较好。The 45 upper top plate shortening operation adopts the method of combination of pre-upsetting and rotary anvil-drilling,with a pre-upsetting amount of deformation of 40% to 60% ,rotary anvil-drilling anvil-width ratio of W/H0.5- 1 and degree of reduction ofεh10% - 15%, effectively avoiding RST effect, seeing a height-diameter ratio of ≤0.3 ,being good for cake-like forgings.

关 键 词：镦粗 旋转进砧 RST效应 

分 类 号：TG316[金属学及工艺—金属压力加工] TD327.2[矿业工程—矿井建设]