Manufacturing method for high-purity iron-chromium-aluminum alloy powder

The invention relates to the technical fields of metal smelting and powder preparation, and discloses a manufacturing method for a high-purity iron-chromium-aluminum alloy powder. The manufacturing method comprises the two phases of melting and gas atomization. Compared with the prior art, the manufacturing method is capable of effectively preventing powder oxidation and avoiding impurity elements; and meanwhile, a powder is adequately dispersed in a cooling process, and the generation of a satellite spherical powder in the powder is reduced, so that preparation for the spherical alloy power with a small particle size is realized. The prepared alloy powder is small in particle size, high in sphericity degree and flowability, low in oxygen content and satellite spherical powder content, good in atomization effect, and capable of effectively preventing the powder oxidation, realizing high purity of alloy, refining crystalline grains, reducing inclusions, reducing separation for the brittle phase of nitride, and