Method for manufacturing fe-xsi(x=4-10.0wt%) alloy compressed powder core by high-temperature molding

Abstract

The present invention relates to a method for manufacturing a Fe-xSi (x=4-10.0 wt %) alloy compressed powder core by high-temperature molding and a high-temperature molded, Fe-xSi (x=4-10.0 wt %) alloy compressed powder core manufactured by the manufacturing method, the method comprising: (a) a coating step of coating a metal alloy powder with an insulator (coating agent), (b) a lubricant mixing step of mixing a lubricant with the metal alloy powder coated with the insulator (coating agent), (c) a primary molding step of primarily molding the coated metal alloy powder at room temperature, (d) a secondary molding step of secondarily molding the coated metal alloy powder at a high temperature, and (e) a heat treatment step, whereby the alloy compressed powder core is higher in molding density and permeability and lower in iron loss compared to those manufactured by conventional room temperature molding methods.

Dependencies are inferred from the claim text.