Analysis of Deceleration Structure of Exhaust Port for Aluminum Alloy Die Casting

Wang Dongsheng; Li Hua; Wu Yansheng; Zhang Guiquan

doi:10.15980/j.tzzz.2019.05.015

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Analysis of Deceleration Structure of Exhaust Port for Aluminum Alloy Die Casting
Vol. 39, Issue 5, Pages: 518-519(2019)
Published： 2019 ，
DOI： 10.15980/j.tzzz.2019.05.015

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[1]王东升,李华,吴艳生,张桂全.铝合金压铸件排气道减速结构的分析[J].特种铸造及有色合金,2019,39(05):518-519.

Wang Dongsheng, Li Hua, Wu Yansheng, et al. Analysis of Deceleration Structure of Exhaust Port for Aluminum Alloy Die Casting. [J]. Special Casting & Nonferrous Alloys 39(5):518-519(2019)
[1]王东升,李华,吴艳生,张桂全.铝合金压铸件排气道减速结构的分析[J].特种铸造及有色合金,2019,39(05):518-519. DOI： 10.15980/j.tzzz.2019.05.015.

Wang Dongsheng, Li Hua, Wu Yansheng, et al. Analysis of Deceleration Structure of Exhaust Port for Aluminum Alloy Die Casting. [J]. Special Casting & Nonferrous Alloys 39(5):518-519(2019) DOI： 10.15980/j.tzzz.2019.05.015.

摘要

为保证压铸件品质

常采用真空压铸

但真空阀芯受铝液的惯性冲击力会失灵

影响真空度

使抽真空效果降低。针对某压铸件的排气系统

利用Anycasting软件进行模拟

发现铝液达到真空阀时速度接近68m/s

速度极高。通过在铝液到达真空阀前端增加减速结构以解决真空阀堵塞和断裂问题。

Abstract

In recent years

in the production of die casting for some important parts

vacuum die casting is often used to exhaust the air in the mould cavity.However

the inertial impact force of liquid aluminium results in the valve core to fail

affecting the vacuum degree and leading to a un-satisfied vacuum effect.For the exhaust system of a die casting

Anycasting software was used to simulate the exhausting behavior in the mould.The results reveal that when molten aluminum reaches the vacuum valve

the very high speed is close to 68 m/s.The problem of vacuum valve blockage and fracture was solved by adding a deceleration structure to the front of the vacuum valve before molten aluminum reached the vacuum valve.