转向节锥孔开裂分析  

CRACKING ANALYSIS OF KNUCKLE COMPONENT

作　　者：杨辉 冯军 

机构地区：[1]东风本田发动机有限公司,广州510700

出　　处：《理化检验（物理分册）》2007年第3期150-152,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：某转向节在装配时开裂。对开裂的转向节进行了断口宏观形貌、硬度、显微组织、化学成分和再现试验分析,发现由于型腔内有孕育剂碎块,碎块在铁水中上浮后没有完全溶解,造成零件的局部硅聚集,从而导致零件开裂。The knuckle component was ruptured in a assembly, the part was analyzed by Macro-appearance, hardness testing, microstructure examination, testing, chemical composition analysis and reappearance test, Inoculation fragments were found inside the mould. These fragments that didn＇t completely dissolve in iron melt due to float caused local silicon gather. That is the reason of the part broken.

关 键 词：转向节 型内孕育 硅聚集 

分 类 号：U463.46[机械工程—车辆工程]