锌合金铸件断裂失效分析  

Fracture Failure Analysis of Zinc Alloy Cast

作　　者：曹国洲[1] 李国伟[2] 肖道清[1] 

机构地区：[1]宁波出入境检验检疫局,浙江宁波315010 [2]南通出入境检验检疫局,江苏南通226000

出　　处：《热加工工艺》2012年第23期206-207,共2页Hot Working Technology

摘　　要：某公司生产的铸造锌合金嵌件在服役早期发生开裂,对铸件断口、材料成分、硬度和金相组织作了分析。结果表明,产品铸造工艺不当,造成铸件组织缩松甚至出现气孔等缺陷是导致铸件断裂失效的主要原因。并对复杂形状铸件的铸造工艺提出了合理化建议。During early serving process, the zinc alloy cast wedger proudced fracture, then the material of wedger was examined by means of fi＇acture furface, chemical composition, hardness and metallography. The results show that the reasons for fracture are dispersed shrinkage and blowhole caused by casting craft. Meanwhile, some reasonable advices for complicated casting were put forward.

关 键 词：锌合金 缩松 气孔 失效分析 

分 类 号：TG247[金属学及工艺—铸造]