| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an induction melting method of a primary coating layer formed on a ring member of a large diameter by using a small device. SOLUTION: A ring member 1 is supported by support rollers 11A, 11B and 11C to support its inner circumferential surface at a plurality of points, an inductor 14 is arranged so as to surround a small section in the circumferential direction of the ring member 1 a primary coating layer of an inner area 15 is melted by the inductor 14, and the ring member 1 is rotated at a specified position. A molten part is moved in the circumferential direction to melt the whole circumference, and pores and oxides in the primary coating layer are removed to form a fine secondary coating layer.</p> |
