| 摘要 |
PURPOSE:To improve remarkably the cooling efficiency of a rolling roll by providing nozzles for spraying cooling water on the calibers of the outer circumferences of rolling rolls and installing weir-plates used for preventing the scattering of cooling water. CONSTITUTION:Pipes 2 are provided to the outlet side of a pair of rolling rolls 1 having caliber grooves 1a in their outer circumferences to spray cooling water against the grooves 1a. The base part of a weir 3 is attached to the pipe 2, and a projecting part 3a of weir-plate 3 is located at the position, a little distance away from a cooling-water spraying position of pipe 2 to the front in the rotational direction of roll 1. The projecting part 3a has a shape corresponding to the groove 1a and is set in a state of inserting it into the groove 1a. In this way, the cooling water from the pipe 2 is spattered by the roll 1, but is dammed up by the weir plate 3 and collected in the groove 1a; on the other hand, the cooling water, after passing through the space between the roll 1 and the weir plate 3 is prevented from scattering by a cover 4; thus the cooling efficiency of rolling roll 1 is remarkably improved. |
