Process Optimization of Permanent Mold Casting A357 Aluminum Alloy Based on Response Surface Methodology

Wang Yanfeng; Yang Zheng; Qiu Changming; Tan Kuan

doi:10.15980/j.tzzz.2019.10.025

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Process Optimization of Permanent Mold Casting A357 Aluminum Alloy Based on Response Surface Methodology
Vol. 39, Issue 10, Pages: 1137-1142(2019)
Published： 2019 ，
DOI： 10.15980/j.tzzz.2019.10.025

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[1]王彦凤,杨正,邱常明,谭宽.基于响应面法的A357铝合金金属型铸造工艺优化[J].特种铸造及有色合金,2019,39(10):1137-1142.

Wang Yanfeng, Yang Zheng, Qiu Changming, et al. Process Optimization of Permanent Mold Casting A357 Aluminum Alloy Based on Response Surface Methodology. [J]. Special Casting & Nonferrous Alloys 39(10):1137-1142(2019)
[1]王彦凤,杨正,邱常明,谭宽.基于响应面法的A357铝合金金属型铸造工艺优化[J].特种铸造及有色合金,2019,39(10):1137-1142. DOI： 10.15980/j.tzzz.2019.10.025.

Wang Yanfeng, Yang Zheng, Qiu Changming, et al. Process Optimization of Permanent Mold Casting A357 Aluminum Alloy Based on Response Surface Methodology. [J]. Special Casting & Nonferrous Alloys 39(10):1137-1142(2019) DOI： 10.15980/j.tzzz.2019.10.025.

摘要

设计了铝合金金属型铸造过程预测模型

研究了工艺参数之间的相互作用对A357铝合金试样微观结构和铸造缺陷的影响

并建立多目标优化模型

得到工艺参数优化解。采用基于Box-Behnken的响应面法建立了试验设计并进行数值模拟。以浇注温度、模具温度和浇注时间为研究因素

以α-Al的等效粒径、平均形状因子和缩松体积为目标响应。采用NSGA-Ⅱ进行多目标优化得到工艺参数优化解

并以优化后的参数进行试验验证。结果表明

铸件的等效直径为298.69"m

平均形状因子为0.532

缩松情况得到改善。

Abstract

An optimization model of the metal casting process parameters for aluminum alloy was established to understand the interaction effects between process parameters on microstructure and casting defects in A357 alloy samples.Multi-objective optimization model was established to obtain the optimized solution of process parameters.The experiments design was established with the help of response surface methodology based on Box-Behnken design

where pouring temperature

mold temperature and the pouring time were taken as factors and equivalent particle size

average shaping factor and porosity volume were taken as response.The multi-objective optimization was carried out using NSGA-Ⅱ algorithm

and the optimization solution of process parameters was presented.Based on the optimized processing parameters

the experimental verification was carried out.The results show that the equivalent particle size and average shaping factor reach 298.69 "m and 0.532 with the decrease of porosity volume.