It was very difficult for high Cr cast Fe hollow ball valve in investment casting due to its internal hollow and full close as well as high crack susceptibility.Hollow ball valve body was successfully produced in investment casting by using drawing-formed thin-walled steel sheet with 2 mm thickness ball core instead of sodium silicate core or ceramic core.
关键词
高铬铸铁空心球阀精密铸造
Keywords
High Cr Cast IronHollow Ball ValveInvestment Casting