某重型卡车前轴成形辊锻工艺设计与优化  

Design and optimization of the precision roll forging on a heavy truck front axle

作　　者：周杰[1] 柳豪[1] 刘旭光[1] 万煦义 佘科能 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044 [2]中国南车集团资阳机车有限公司,四川资阳641205

出　　处：《重庆大学学报（自然科学版）》2012年第3期67-73,91,共8页Journal of Chongqing University

基　　金：国家重大专项资助项目(G09003.8-1)

摘　　要：针对某牌号重型卡车前轴锻件成形辊锻、模锻工艺调试中遇到的典型缺陷——工字梁充填不满开展研究,基于前期某锻造公司大量的生产调试数据和有限元分析软件,建立了前轴成形辊锻、模锻有限元分析模型;在此基础上,研究了工字梁充填不饱满缺陷的产生机理,重点分析了第3道次模具工字梁型腔部位的3个关键参数宽度B3、圆角R3、斜度A3对成形质量的影响规律,重新设计了前3道次辊锻模具工字梁部位孔型和尺寸,并完成了辊锻模具制造。生产结果表明,工字梁部位充填饱满,产品尺寸合格。基于数值模拟的设计方法有效增加了模具设计的准确程度,减少了模具修改次数,缩短了调试周期,保证了最终产品的质量。The under-filling defect of I-beam in a heavy truck front axle which occurs in the process debugging of the precision roll-forging and die-forging is studied.Finite element models of precision roll-forging and die-forging are established based on FEM software and the previous productive results.Then,the mechanism of the under-filing defect in I-beam is studied.And the effects of the three variables including width B,radius R and slope A of I-beam in the third step on the forging quality are investigated.In addition,the roll-forging die constructions for I-beam in previous three steps are redesigned and manufactured.The productive results show that I-beam can be fully filled,the debugging cycle is reduced significantly and the products quality is guaranteed.

关 键 词：重型卡车前轴 成形辊锻 有限元分析模型 充填不满 

分 类 号：TG306[金属学及工艺—金属压力加工]