MC300K12塔吊鱼尾板断裂原因分析

Analysis on the Causes for the Cracking on Fish Plate of MC300K12 Tower Crane

本文利用化学成份测试、机械性能试验、金相组织检验、显微硬度测定及断口分析等手段对鱼尾板进行了断裂原因分析。结果表明,材料的原始晶粒粗大是产生裂纹的主要原因。

This paper gives on analysis on the causes for the cracking on fish plate by examination of chemical composition mechamical propertis、metallurgraphic、microhardmoss and fractography.The results showed that the cracking on fish plate was mainly resulted from the grain coarsening of material.