It is introduced the design principal and operation method of CAD software for vanishing-mould casting process of nodular cast iron pipe.It can raise the design efficiency and precision.

• 介绍了球墨铸铁管件消失模铸造工艺的计算机辅助设计CAD软件的设计原理、操作方法,该CAD软件可提高消失模铸造球铁管件的工艺设计效率和设计精度。