METHOD FOR MANUFACTURING CYLINDRICAL METAL-MADE CAST-IN MEMBER

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a cylindrical metal-made cast-in member cast into a metal casting component. SOLUTION: This is a manufacturing method by which the cylindrical metal- made cast-in member is cast into the metal casting component, hereby the cylindrical metal-made cast-in member 20 is passed through the disc 17 having a groove on the inside circumference, and molded by an extruding molding method by making a central axis parallel with the extrusion direction of the cylindrical metal-made cast-in member 20 as a center while rotating the cylindrical metal-made cast-in member 20 and the disc 17 relatively.