Abstract: The operation principles of improved disintegrating machine are as follows:Additives are accelerated by high-speed(3000r/min) arotors.After being accelerated,the roughly crushed sponge iron powder(smaller than φ6mm) impinges against a lining plate with gear fixed on the inner surface of the machine body and mutually impinges between particles with the aim of disintegration.This machine has overcome the shortcomings of inferior quality of iron powder and ready wear of running parts in conventional high-speed machines and remarkably improved workshop environments and labour conditions.