▎ 摘　　要

NOVELTY - Preparing anti-cracking composite magnetic material comprises (i) adding the alloy powder and mixed material into the mixing device for wet mixing, adding the mixed material and agglomerant into the internal mixer for uniform mixing and internal mixing, collecting the metal materials, cooling and storing; (ii) adding the mixed material into a granulator for granulation to obtain metal particles with a particle size of 0.8-1.1 mm or less, preparing the metal particles into powder by an air-flow milling device to obtain a mixed powder with a particle size of 0.8-1.3 µm or less, and placing mixed powder in a mold for stamping to obtain a magnetic material embryo; and (iii) catalytically degreasing the magnetic material embryo in an acidic atmosphere at 110-145℃ for 5-7 hours. USE - The method is useful for preparing anti-cracking composite magnetic material is useful for electromagnetic shielding used in high-frequency electronic appliance device, in scientific and electronic industries, various digitalization, and high density integration direction development. ADVANTAGE - The method: can reduce the residue in the stirring chamber after the material is stirred by making the sliding plate rise slowly and falls quickly, material accumulation at the bottom and residue of the material and residue of the material, squeezes the internal material thus forms the turbulent flow, improves the uniformity of material mixing; removes most of the binder by catalytic degreasing in an acidic atmosphere, so that the shape retention of the green body is good; and produces the finished product structure with good uniformity, good density and reliable physical properties and high toughness and reduced the phenomenon of cracking of magnetic materials during use. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram of the preparing anti-cracking composite magnetic material.