|
摘要：
|
|
轴类大锻件的锻造过程分为压方、拔长和倒棱滚圆三大步骤。为制定准确的倒棱滚圆工艺参数以提高锻件质量并指导实际生产,应用有限元软件Deform-3D建立相应的分析模型,对倒棱滚圆过程进行模拟。从锻件的尺寸精度和锻件内部应力应变状态两个方面对比分析了平砧、90°V型砧和120°V型砧3种工艺方法。模拟结果表明,运用120°V型砧倒棱滚圆可以得到质量更佳的轴类大锻件。
|
|
The whole forging process of long-axis heavy forging was divided into three steps,including squaring,stretching and chamfering-rounding.In order to establish the chamfering-rounding technological parameter exactly,to improve the forging quality and to guide the actual production,the corresponding finite element model by means of DEFORM-3D software was set up,and the chamfering-rounding process was simulated.The three techniques,chamfering-rounding by flat,90°V-shape and 120°V-shape anvils,were compared in terms of the size precision and the internal state of strain-stress.The results show that the forging quality is the best by using 120°V-shape anvil.
|
|
基金项目：
|
|
2008年广州市科技支撑计划项目(2008Z1-D221);;
2009年广东省重大科技专项(2009A080304004)
|
|
作者简介：
|
|
|
|
参考文献：
|
[1]付强,崔振山,陈文,等.不同型砧下大型轴类锻件倒棱滚圆过程的数值模拟研究[J].模具技术,2008,(3):1-6.
[2]底学晋,李建华,蔡墉.我国大锻件生产行业建设发展回眸[J].重型机械,2000,(1):1-5.
[3]郭会光.我国大型锻造的发展与提高[J].机械工人热加工,2005,(7):14-15.
[4]崔振山,徐秉业,任广升,等.圆柱体内部空洞热锻闭合过程的数值模拟[J].塑性工程学报,2002,9(1):49-52.
[5]刘助拍,朱继武.新拔长理论工艺参数的量值匹配与确定[J].机械工程学报,1994,30(5):83-86.
[6]孙海燕.锻件工艺参数对改善超声波探伤缺陷的影响[J].大型铸锻件,2001,(2):31-39.
[7]董节功,周旭东,朱锦洪,等.径向锻造三维成形锻透性的数值模拟[J].机械工程材料,2007,31(3):76-78.
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
