封头的铸造

Foundry Method of A Stainless Steel Bulkhead

介绍ZG35Cr24Ni7SiN耐热不锈钢封头生产工艺的改进经验。采用水玻璃自硬砂造型,表面采用锆英粉涂料,明顶冒口工艺,能有效解决封头铸造过程中的粘砂、冒口切割困难等难题,铸件质量明显提高,工艺出品率66％。

The experience in improving foundry method for a bulkhead cast with stainless and heat resistant steel was introduced. Sodium silicate self-setting sand was adopted for making mould, zirconite paint was adopted for coating the mould surface, and the top open riser was used in improved foundry method. The problems with metal penetration and difficulty to cut off the risers have been successfully solved after the method was improved, and the casting quality has been obviously enhanced, process yield rate reached 66%.