Be suitable for compound rolling roll device

The utility model discloses a be suitable for compound rolling roll device, including roller shell, roller core, copper sheathing, inner tube, supporting ring, rotary joint and cooling water circulation system, the cooperation of roller shell and the big magnitude of interference of roller core, the inside cooling water access way that sets up of roller core, its tip concreties and sets up the rotary joint who two -way circulates, cooling water circulation system pass through hose and rotary joint's water inlet, delivery port intercommunication. The utility model discloses a set up cooling water access way in that the roller core is inside, externally set up cooling water circulation system's structure, can effectively solve the heat dissipation problem of roll in compound the?rolling?process, make the roll keep good mechanical properties, avoided the strip surface after the preliminary treatment not stained by water, oil or dust simultaneously, guaranteed that recombination processes can stably go on normall