The invention discloses a method for manufacturing a
sendust material and a mu173
sendust magnetic powder core. The specific method includes the steps of a, conducting
alloy smelting, wherein the
smelting temperature is more than 1400 DEG C, and the time for
alloy smelting is more than 50 minutes; b, preparing
powder, namely, directly conducting
nitrogen spraying to manufacture
powder after the
alloy smelting is conducted; c, conducting
powder reduction, namely, conducting reduction through
nitrogen; d, conducting power material inactivation, namely, adding an analysis pure grade
phosphoric acid solution to the
sendust powder, and conducting uniform mixing, wherein the analysis pure grade
phosphoric acid solution accounts for, by weight, 3% to 5% of the sendust powder; e, conducting annealing, namely, placing powder into a
nitrogen protection furnace at the temperature of 360+ / -30 DEG C; f, conducting insulation
coating, namely, adding
silicon resin adhesives and powder lubricants, wherein the
silicon resin adhesives account for, by weight, 1.5% to 3.5% of the powder, and the powder lubricants account for, by weight, 0.5% to 1% of the powder; g, conducting die pressing forming; h, conducting
thermal treatment, namely, placing a formed product into the nitrogen protection furnace at the temperature of 700+ / -30 DEG C, and conducting annealing for about one hour; i, conducting
surface coating, namely, evenly
spray painting a layer of
epoxy resin paint on the outer surface of the product.