Amorphous alloy is formed by ultra-rapid cold solidification technology, while the atoms of the alloy are too late to crystallize in an orderly way, the solid alloy obtained is a disordered structure, without the existence of grain and grain boundary of crystalline alloy.This amorphous alloy has many unique properties. Due to its excellent properties and simple processing technology, it has become the focus of research and development of domestic and foreign material science since the 1980s.Fe-based amorphous alloy is composed of 80%Fe and 20%Si, B etc.metal elements. It has the characteristics of high saturation flux density (1.54t), magnetic permeability, excitation current, iron loss and other aspects are better than silicon steel sheet.