Failure Analysis and Optimization Design of Injection Mechanism of Hot Chamber Casting Machine

Wang Chang; Wang Yuxin; Zhou Zhongfeng; Shui Lefeng

doi:10.15980/j.tzzz.2022.06.023

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Failure Analysis and Optimization Design of Injection Mechanism of Hot Chamber Casting Machine
Vol. 42, Issue 6, Pages: 785-788(2022)
Published： 2022 ，
DOI： 10.15980/j.tzzz.2022.06.023

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Wang Chang, Wang Yuxin, Zhou Zhongfeng, et al. Failure Analysis and Optimization Design of Injection Mechanism of Hot Chamber Casting Machine. [J]. Special Casting & Nonferrous Alloys 42(6):785-788(2022)
DOI：

Wang Chang, Wang Yuxin, Zhou Zhongfeng, et al. Failure Analysis and Optimization Design of Injection Mechanism of Hot Chamber Casting Machine. [J]. Special Casting & Nonferrous Alloys 42(6):785-788(2022) DOI： 10.15980/j.tzzz.2022.06.023.

摘要

压射机构内部径向变形会引起冲头和压室配合间隙变化，是造成压射机构失效的主要原因。以1 250 kN热室压铸机压射机构为研究对象，基于流固耦合，分析了压射过程中的热变形以及热力耦合，并对其进行对比验证。结果表明，金属液产生的热量传递到压射机构的压室和鹅颈壶会引起其内部径向变形，导致压射机构失效。据此进行了结构优化设计，优化后的压射机构变形量和质量均有所降低。

Abstract

The internal radial deformation of injection mechanism can induce the fit clearance change between the punch and the pressure chamber

which is the main reason for the failure of the injection mechanism. Taking 1 250 kN hot chamber die casting machine as the research object

the thermal deformation and thermal coupling analysis during the injection process were verified comparatively based on the liquid-solid coupling. The results indicate that the heat generated by metal solution is transferred to the pressure chamber and gooseneck pot of the injection mechanism

which causes internal radial deformation

leading to the failure of the injection mechanism. On this basis

the structural optimization design was carried out

and the deformation and weight of the optimized injection mechanism were improved.