基于数值仿真的铝合金大型薄壁件的浇注系统设计

李昭; 张立强; 朱必武; 易杰; 李落星

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基于数值仿真的铝合金大型薄壁件的浇注系统设计
Design of Gating System for Large Thin-walled Aluminum Alloy Components based on Numerical Simulation
2010年30卷第2期页码：120-123
纸质出版日期： 2010 ，
DOI：

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[1]李昭,张立强,朱必武,易杰,李落星.基于数值仿真的铝合金大型薄壁件的浇注系统设计[J].特种铸造及有色合金,2010,30(02):120-123+92-93.

Li Zhao1, Zhang Liqiang1, Zhu Biwu1, et al. Design of Gating System for Large Thin-walled Aluminum Alloy Components based on Numerical Simulation[J]. Special Casting & Nonferrous Alloys, 2010,30(2):120-123.
[1]李昭,张立强,朱必武,易杰,李落星.基于数值仿真的铝合金大型薄壁件的浇注系统设计[J].特种铸造及有色合金,2010,30(02):120-123+92-93. DOI：

Li Zhao1, Zhang Liqiang1, Zhu Biwu1, et al. Design of Gating System for Large Thin-walled Aluminum Alloy Components based on Numerical Simulation[J]. Special Casting & Nonferrous Alloys, 2010,30(2):120-123. DOI：

摘要

采用有限元模拟技术

对不同浇注方式下A356铝合金大型薄壁件的充型和凝固过程进行仿真

预测了不同浇注方式下薄壁件可能出现缺陷的位置

对比分析了各种浇注系统的优缺点。结果表明

雨淋式浇注系统有利于铝合金大型薄壁件的充型

其充型过程平稳

凝固有序

卷气、缩孔、缩松现象较少。选用雨淋式浇注系统

获得尺寸为1272mm×506mm×4.7mm的汽车前盖板合格铸件。

Abstract

Filling and solidification of large thin-walled A356 aluminum alloy components were simulated by the FEM （finite element method） in condition of different pouring ways to predict the potential defect position occurred in the thin-walled components

and the merits and demerits of different gating systems were comparatively analyzed. The results show that shower gating system is favorable for the filling process of large thin-walled aluminum alloy components

in which entrapped-gas and shrinkage porosity （hole） are decreased as a result of smooth filling and sequential solidification. The qualified front cover plate for vehicle with 1272 mm in length and 506 mm in width and 4.7 mm in thickness can be successfully produced by employing the shower gating system.