| 摘要 |
PROBLEM TO BE SOLVED: To provide a removing method of an oxidized film on the surface of a metallic material by which the oxidized film which is generated on the surface of the metallic material at heat treatment which is performed as the pretreatment of various metallic materials is removed efficiently and surely in the rolling or the wiredrawing stage of the various metallic materials. SOLUTION: This method is a removing method of the oxidized film on the surface of the metallic material in which, by blasting metallic particles of only polygonal particles or the polygonal particles and approximately spherical particles which are mixed at a proper mixing ratio to the surface of the metallic material of a stainless steel sheet, an electrical steel sheet, a steel bar or a wire rod, the oxidized film on the surface of the metallic material is removed.
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