厚大断面球铁齿轮的无冒口铸造工艺设计与实践

Noriser Foundry Process Design and Practice of Heavy Section Ductile Iron Gear

根据均衡凝固理论提出的有限补缩、膨胀及收缩动态叠加的基本原理，利用铸铁的自补缩方式，结合铸件本身的结构特点，进行铸造工艺设计与控制。实现了厚大断面球铁齿轮的无冒口工艺铸造。

According to the theory of nondirectional solidfication and limited feeding principle and dynamic folding of solidfication shrinkage and expansion, taking into consideration of iron casting selffeeding characteristic and the structure of casting, noriser foundry process has been designed and successfully used for the production of heavy section ductile iron gear.