中国铸造2006，Vol.3Issue(3)：175-183,9.
Material and technique of Si-Mo heat-resistant vermicular iron exhaust manifold
Material and technique of Si-Mo heat-resistant vermicular iron exhaust manifold
JIN Yong-xi1
作者信息
- 1. Shanghai Sandman Foundry Co., Ltd.
- 折叠
摘要
Abstract
Si-Mo vermicular iron is an ideal material for exhaust manifold that works in high temperature and thermal cycle conditions because its properties of thermal fatigue resistance and thermal distortion resistance are significantly better than that of gray cast iron and nodular iron.This paper explains that the vermicularity of Si-Mo vermicular iron is better to be controlled approximately to 50% for the applications of exhaust manifold castings, and generalizes the successful experience of vermicularizing technique that uses sandwich (pour over) process combining with cored-wire injection in trough process together, and uses rare earths-magnesium-silicon as vermicularizing alloy in Disa high speed molding line and automatic plug rod air pressure pouring furnace. In addition, this paper also describes the method to solve the shrinkage hole and porosity defects in the exhaust manifold production.关键词
Si-Mo vermicular cast iron: exhaust manifold/vermicularity: vermicularizing alloy:vermicularizing techniqueKey words
Si-Mo vermicular cast iron: exhaust manifold/vermicularity: vermicularizing alloy:vermicularizing technique分类
矿业与冶金引用本文复制引用
JIN Yong-xi..Material and technique of Si-Mo heat-resistant vermicular iron exhaust manifold[J].中国铸造,2006,3(3):175-183,9.
