铸态球墨铸铁阀体铸件的生产试验

Production Experiment of As--cast Ductile Iron Valve Body Castings

在分析化学成分对铸态球墨铸铁影响的基础上，通过采用低稀土球化剂、使用盖包法球化处理以及复合孕育工艺等一系列措施，成功实现了完全铸态条件下球墨铸铁件的生产。该方法无需对铸件进行热处理，提高了生产效率，降低了铸件生产成本，改善了生产环境。

This paper describes ensure stable production of high quality cast iron ball valve body casting some of the meas-ures taken. Including its chemical composition on the valve body casting choice, raw materials and smelting of the control, low --rare--earth Nodulizer the selection, use the lid packet method spheroidization treatment process to strengthen the effect of inoculation treatment .and other key processes.