| 摘要 |
PURPOSE:To decrease cutting quantity and to obtain a stock at a high yield by preliminarily subjecting a long-sized stock for a turbine vane to pressing by rolling rolls at the point corresponding to the vane body part. CONSTITUTION:The rolling rolls 14 are further installed on the down stream side of rolling rolls 12 and are so provided that the roll angle and depth of press to the stock 10 can be changed. The point of the long sized stock 10 corresponding to the turbine vane body part 4 is pressed flat by the rolls 14 prior to the division of said stock to individual pieces for the purpose of cutting out the turbine vanes. The stock is then so divided that the flat part becomes the body part 4, by which the stock 16 is formed. Since the vane body part 4 is preliminarily worked flat, the cutting quantity in cutting out of the vane from the stock 16 is decreased and the stock is obtd. at the high yield. |
