高镍奥氏体球墨铸铁件缺陷分析及对策

Defects Analysis and Countermeasure on High-Nickel Austenitic Ductile Iron Castings

高镍奥氏体球墨铸铁与球墨铸铁虽然有相同的铸造缺陷,但某些铸造缺陷的发生和解决方法与球墨铸铁却又不尽相同。由于高镍奥氏体球墨铸铁的凝固特性,缩孔、缩松、片状石墨和缩气孔是其主要缺陷,分析这些缺陷产生的原因,并制定出纠正、预防措施是铸造工作者的当务之急。

The causes and solutions for some defects of high-nickel austenite ductile iron and ductile iron with the same casting defects are various.Due to the characteristic of its solidification for high-nickel austenite ductile iron,its main defects are shrinkage,dispersed shrinkage,flake graphite and blowhole.It is foundry men＇s top priority to analysis the cause of the defects and put forward preventive plans.