Compound Precision Casting Process for Large Caliber Gate Valve Body
Author of the article:SHAO Axin;ZHOU Dongzi
Author's Workplace：Zhonghong Valve Co.,Ltd.,Handan 056700,China
Key Words：cast steel large caliber gate valve valve body computer simulation complex precision casting process
Abstract：There are various quality problems in sodium silicate precision casting and sand casting of large caliber gate valve castings.With the development of the Times,the cast steel valve market on the product quality requirements to further improving,the intensification of market competition,the quality of products and production cycle requirements are more and more strict.The process of large caliber valve body casting was simulated by computer simulation software,and precision casting by silica sol+sodium silicate composite was carried out.The results show that 16″-150LB valve body casting is successfully developed,the product quality meets the requirements,and the delivery cycle is guaranteed.
