铝合金烤盘压铸模失效分析

Failure Analysis of Aluminium Alloy Bakeware Casting Dies

某厂铝合金烤盘压铸模因模面出现大面积龟裂而早期失效。通过材料成分、硬度和金相分析,认为模具材料的合金元素含量不足,存在不可忽视的冶金缺陷,显微组织中出现带状偏析和半网状组织,是导致模具早期失效的原因。

Large area crack appearing on the surface of the aluminium alloy bakeware casting dies causes its early failure. By the analysis of materials composition, hardness and metallography, it finds that the insufficiency of alloy element content, the existence of the metallurgical defects, the belt segregation and discontinuous reticular structure of the microstructure are the main reasons of the early failure of the mould.