| 摘要 |
<p>The present invention relates to a method for manufacturing a support ring. A preforming step, a settling step, a forging step, a trimming step in processes for manufacturing the support ring are performed by the time and the temperature appointed. In the preforming step, it is heated at 1,153°C for three minutes and 30 seconds. The minimum temperature when settled is maintained at 1,123°C. The maximum temperature in the forging step becomes 1,153°. The temperature becomes 932°C after completing trimming. Accordingly, heat crack or breakage which may occur in a finally produced support ring can be reduced so that yield can be improved due to work efficiency.</p> |
