锻压技术

基于数值模拟的窝帽精密成形坯料优化

英文标题：Optimization of cap billet in the precision forming based on numerical simulation

作者：陈凯刘淑梅王星星何文涛

单位：上海工程技术大学

分类号：TG316

出版年,卷(期):页码：2015,40(8):149-152

摘要：

通过数值模拟分析了窝帽热锻模具和毛坯设计参数对成形载荷、锻件折叠和充不满的影响。数值模拟结果表明：2个初始毛坯的设计均不合理，毛坯体积过小是造成锻件充不满的主要原因。为了避免锻件塌角的同时应尽可能降低挤压力和合模力，余料与锻件的体积比应控制在0.04%~0.35%范围内，余料槽宽度应在3~6 mm之间，且随着余料体积的增加而增加，余料与锻件之间应增设过渡圆角r=2 mm。

The influences of billet design parameters and cap die on the forming load, folding and underfill of forging parts were analyzed by numerical simulation. The simulation results show that two initial billets are designed unreasonably, and the main reason causing inadequate filling is the small volume of billets. In order to avoid inadequate filling and keep extrusion pressure and clamping force as low as possible, the volume ratio of excess material and forgings should be controlled within the range from 0.04% to 0.35%, and the width of excess material groove is within 3-6 mm, which increases with the increase of volume. The transition fillet r=2 mm should be added between the excess material and forgings.

基金项目：

上海市高等教育内涵建设“085”工程（B-8932-13-0110）；上海工程技术大学研究生科研创新项目(14KY0514，15KY0507)；上海工程技术大学大学生重点科研平台创新训练项目(A1-5300-14-050115)

陈凯（1992-），男，硕士研究生

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