Optimization of the Die Casting Process Parameters of AZ91D Slim Laptop Case

Luo Zhemin; Li Liejun; Ni Donghui; Peng Jihua; Li Yangde; Li Weirong

doi:10.15980/j.tzzz.2016.10.013

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Optimization of the Die Casting Process Parameters of AZ91D Slim Laptop Case
Vol. 36, Issue 10, Pages: 1057-1060(2016)
Published： 2016 ，
DOI： 10.15980/j.tzzz.2016.10.013

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[1]罗哲民,李烈军,倪东惠,彭继华,李杨德,李卫荣.AZ91D超薄笔记本电脑外壳压铸工艺参数优化[J].特种铸造及有色合金,2016,36(10):1057-1060.

Luo Zhemin, Li Liejun, Ni Donghui, et al. Optimization of the Die Casting Process Parameters of AZ91D Slim Laptop Case. [J]. Special Casting & Nonferrous Alloys 36(10):1057-1060(2016)
[1]罗哲民,李烈军,倪东惠,彭继华,李杨德,李卫荣.AZ91D超薄笔记本电脑外壳压铸工艺参数优化[J].特种铸造及有色合金,2016,36(10):1057-1060. DOI： 10.15980/j.tzzz.2016.10.013.

Luo Zhemin, Li Liejun, Ni Donghui, et al. Optimization of the Die Casting Process Parameters of AZ91D Slim Laptop Case. [J]. Special Casting & Nonferrous Alloys 36(10):1057-1060(2016) DOI： 10.15980/j.tzzz.2016.10.013.

摘要

为解决镁合金超薄外壳件压铸成形性差的难题

通过正交试验研究了浇注温度、模具温度和压射速度对铸件力学性能的影响。结果表明

当浇注温度为700℃、模具温度为210℃、压射速度为5m/s时

铸件的力学性能最佳。采用SEM对拉伸试样断口进行分析

发现铸件内部疏松、缩孔的数目随浇注温度升高而减少

在浇注温度为700℃时

抗拉强度和屈服强度分别达到242.6 MPa和220.6 MPa。

Abstract

To resolve the die-casting forming performance of thin-walled magnesium alloy laptop case

some parameters

such as pouring temperature

mold temperature and injection speed

on the mechanical properties of the AZ91 Dslim laptop case were investigated by orthogonal experimental method.Experimental results show that with the pouring temperature of 700℃

mold temperature of 210℃

injection speed of 5m/s

the die castings exhibit the satisfied mechanical properties.Tensile specimen fracture was observed by SEM.The results show that the number of shrinkage holes（porosities）in the laptop case is decreased with increasing in pouring temperature.With pouring at 700 ℃

the tensile strength and yield strength of the die casting reach 242.6 MPa and 220.6 MPa

respectively.