Based on the idea of function design, an architecture of the assembly design system for injection mould in concurrent and collaborative environment was presented using top down pattern.

It introduces the mould structure and working principle of the injection mould with inside pattern drawing from three directions for core. Point out the design gists of the mould.

This paper presents a kind of method for producing ductile iron castings with the technique of evaporative pattern casting and in mould spheroidizing, and introduces its main measures.