采用电子计算机编程的线切割工艺制造异形复杂粉末冶金钢模,生产周期短、模具精度高、节约材料、节省设备、经济效益好,是一种很有应用前途的模具加工工艺。本文以制造摆线内外转子粉末冶金压模为例,比较了电蚀加工和线切割工艺的优劣,肯定了线切割加工的优越性。 The use of computerized wire cutting process for manufacturing complex shaped steel powder metallurgy complex, short production cycle, high precision molds, saving materials, saving equipment, good economic returns, is a promising mold processing technology. In this paper, the manufacture of cycloidal internal and external rotor powder metallurgy die as an example, compared the advantages and disadvantages of electric erosion machining and wire cutting technology, affirmed the superiority of wire cutting.