Manufacturing method of sintered iron-silicon (Fe-Si) soft magnetic alloy

摘要

The present invention relates to a method of manufacturing a Fe-Si soft magnetic alloy used as magnetic core materials such as transformers, motors, generator cores and yoke materials of magnetic materials, and has good crushability and formability, and have high sintered density. An object of the present invention is to provide a method for producing a sintered Fe-Si soft magnetic alloy that is excellent in soft magnetic properties and can also be used in a high frequency region.;The present invention for achieving the above object in the method for producing a soft magnetic alloy containing Fe-Si as a main component, by cooling the cooling rate range of 8-35m / sec in the molten Fe-Si alloy to prepare a powder After pulverization, the powder was mixed by adding a binder in the range of 0.5-3% to the weight of the total Fe-Si alloy powder, and then molded in a pressure range of 1-10 ton / cm ² and a temperature of 1100-1350 ˚C. The summary relates to the manufacturing method of the sintered Fe-Si soft magnetic alloy which consists of sintering in the range.