Method for preparing master alloy by remelting and recycling high-temperature alloy powder

The invention relates to the technical field of powder metallurgy, and particularly discloses a method for preparing mother alloy by remelting high-temperature alloy powder, which comprises the following steps: preparing raw materials: proportioning according to the components of the high-temperature alloy, the high-temperature alloy powder accounting for 10-50% of the total mass of the proportioning; the high-temperature alloy powder return scraps are wrapped and packaged with aluminum foil, then the high-temperature alloy return scraps wrapped with the aluminum foil are put into a vacuum induction melting furnace, and then small metal materials are added to cover the powder return scraps till a crucible is full; melting: after the charging is finished, vacuumizing until the pressure is less than 30Pa, filling argon to a certain pressure, electrifying to melt the furnace charge, vacuumizing until the pressure is less than 1Pa after the furnace charge is molten, and continuously adding the residual material b