| 摘要 |
PURPOSE:To produce the forming product having annular part without causing any scrap by producing annular body with bending that which is cut in the prescribed length from a metallic rod body and by pressing by a metal die after welding the joining part. CONSTITUTION:A metallic rod body 1 is cut in the prescribed size, made in annular shape with its bending and the first work 3 is made with welding of the joining part thereof. The first work 3 is then charged between backing metal die 4 and movable metal die 5. The annular formed product 6 is then obtd. with its pressing by the movable metal die 5 and backing metal die 4.
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