METHOD FOR MANUFACTURING BEARING STEEL

摘要

PURPOSE: A method for shortening a time required for spheroidization process of bearing steels is provided. CONSTITUTION: In a conventional method for manufacturing bearing steel, the method is characterized in that a wire rod obtained by hot rolling of steel sheet is cooled at a rate of 4 to 10°C/sec so that proeutectoid cementite formation is reduced along with reduction of a distance between pearlite layers (interlamellar spacing), thereby reducing a time period required for spheroidization process of bearing steels.