Extraction of nonmetallic inclusions in high carbon bearing steel by electrolytic method

摘要

The present invention relates to a step of extracting a non-metallic inclusion in a high carbon bearing steel by an electrolytic method. The method of extracting non-metallic inclusions in high carbon bearing steel by the electrolytic method of the present invention comprises the steps of decarburizing at 1000 ° C.-1200 ° C. for 4-6 hours before electrolyzing the specimen for electrolytic extraction, and electrolyzing the decarburized specimen as an anode. And acid-treating the non-metallic inclusions and electrolytic residues collected after the completion of the electrolysis in a 40-60 vol% aqueous hydrochloric acid solution at 70-110 ° C., and adding distilled water to the non-metallic inclusions and carbides remaining after the acid treatment. Simultaneously washing with water, using a specific gravity difference between inclusions and carbides to remove the suspended carbide in the solution.