Die Casting Design of Al Alloy Rear Sub-frame on the Vehicle Chassis

Ma Guangxing1; Wan Li2; Liang Zhenjin1; Liu Houyao2; Wu Zhanfang2; Wu Shusen3; Zhao Yuchao2; Yang Linfang2

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Die Casting Design of Al Alloy Rear Sub-frame on the Vehicle Chassis
Vol. 32, Issue 1, Pages: 55-59(2012)
Published： 2012 ，
DOI：

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[1]马广兴,万里,梁振进,刘后尧,吴湛方,吴树森,张遇朝,杨林方.轿车底盘铝合金后副车架的压铸工艺及模具设计[J].特种铸造及有色合金,2012,32(01):55-59.

Ma Guangxing1, Wan Li2, Liang Zhenjin1, et al. Die Casting Design of Al Alloy Rear Sub-frame on the Vehicle Chassis. [J]. Special Casting & Nonferrous Alloys 32(1):55-59(2012)
[1]马广兴,万里,梁振进,刘后尧,吴湛方,吴树森,张遇朝,杨林方.轿车底盘铝合金后副车架的压铸工艺及模具设计[J].特种铸造及有色合金,2012,32(01):55-59. DOI：

Ma Guangxing1, Wan Li2, Liang Zhenjin1, et al. Die Casting Design of Al Alloy Rear Sub-frame on the Vehicle Chassis. [J]. Special Casting & Nonferrous Alloys 32(1):55-59(2012) DOI：

摘要

为配合广汽集团国产自主品牌轿车"传祺"的开发

针对该车型的底盘后副车架压铸零件

设计并采用FLOW-3D数值模拟软件优化出了其压铸工艺方案

据此制作了高真空压铸模具。试模及产品品质检测表明

基于MFT（Minimum Filling Time）的铝合金后副车架的浇注系统设计合理

金属液充型有序、流畅。模具分型面、顶杆以及冲头处的密封结构设计能保证压铸过程中良好的密封性能

模具型腔的真空度可在1s内达到91kPa以上。模具冷却采用分区域温度测量及冷却水流量独立调节的方法提高了模具温度控制的精度

降低了铸件缺陷发生的几率。该模具现已批量生产广汽"传祺"的铝合金后副车架零件。

Abstract

The development of lightweight and die casting technology for car body/chassis suspension key parts is one of the foremost research fields recently.To meet the requirements of own-brand car named "Trumpchi" belonging to Guangzhou Automobile Group（GAC）

die casting design for the rear sub-frame of the car chassis was performed.The results showed that the gating system and overflow/venting design based on Flow-3D simulation are reasonable

whose filling process is smooth.Good sealing effect can be improved by sealing design at parting surface

ejected pin

and shot pin.where vacuum degree can be reached up to 91kPa within 1s.Temperature-control precision can be improved effectively by adopting several thermocouples positioned temperature measuring in the die and individual adjustment of cooling water flow rate according to the mold temperature.Mass-volumetric production was made by the mold now.