| 摘要 |
PROBLEM TO BE SOLVED: To provide a ring rolling mill having structure enabling one ring rolling mill to perform a rough rolling and a finish rolling in a short period of time without requiring reheating and enabling a workpiece to be efficiently moved and taken out.SOLUTION: The ring rolling mill includes : a first station 170 which performs the raising and lowering operations of a first mandrel 120 and moves horizontally while being accompanied by the first mandrel 120; a second station 180 which performs the raising and lowering operations of a second mandrel 130 and moves horizontally while being accompanied by the second mandrel 130; and an exit of a workpiece W. The workpiece W is rolled, moved and taken out by combining the raising and lowering operations of the first and second mandrels 120 and 130 by the first and second stations 170 and 180 and the horizontal movements while being accompanied by the first and second mandrels 120 and 130. |
