| 摘要 |
PURPOSE: A correcting apparatus for removing a residual stress in a pipe is provided to pressurize and fix both ends of the pipe with a straightness correcting unit, thereby accurately correcting the pipe and longitudinally correcting the both ends of the pipe. CONSTITUTION: A correcting apparatus for removing a residual stress in a pipe includes a feeding unit (100), an up-down unit (200), a turning unit (300), a supplying unit (400), a main correcting unit (500), a straightness correcting unit (600), and a pipe end correcting unit (700). The straightness correcting unit pressurizes and fixes the pipe (10) downwards so that the pipe is straightened by the main correcting unit. The pipe end correcting unit facing the straightness correcting unit longitudinally pressurizes the outer diameters of both ends of the pipe in order to correct the distortion of the pipe. |
