模块成型机蒸汽压力箱模槽板断裂失效分析

Fractured Failure Analysis of the Die Cavity Plate in Steam Pressure Tank of Mould Machine

对某厂模块成型机蒸汽压力箱断裂样品进行了断口分析、化学成分检验、机械性能测试和金相组织观察等实验研究，结果表明蒸汽压力箱断裂的主要原因是在模槽板上的螺孔处由于承受反复循环载荷而产生的较大的应力集中。

By means of fracture analysis, chemical compsition analysis, mechanical test and the metallurgical structure observation of the die cavity plate in steam pressure tank of mould machine in a factory, we conclude that a main cause of the die cavity plate fracture is that cyclic loading leads to big stress concentration in the thread.