Induction heating assisted underwater laser cladding or additional material device and use method

The invention provides an induction heating assisted underwater laser cladding or additional material device which includes a controller. The controller is connected with a laser, a robot, a wire feeder and an induction heating machine, the laser is connected with a laser head through an optical fiber, a laser welding torch is fixedly arranged directly below the laser head, and the laser head is further connected to the robot. The laser welding torch is further provided with a wire feeding end opening, a wire feeding tube is arranged inside the wire feeding end opening, one end of the wire feeding tube extends into the laser welding torch, and the other end of the wire feeding tube is butt joint with the wire feeder. A welding wire is guided into the wire feeding tube, the laser welding torch is internally provided with an induction coil I, the induction coil I is slidably connected to a transmission shaft through a connecting device, the transmission shaft is fixed to the inner wall of the laser welding torch in a bridge joint mode, the transmission shaft is connected with a stepping motor arranged on the outer side of the laser welding torch, and the opening and closing of the stepping motor are controlled by the controller through a control system. The end of the induction coil I is connected to the induction heating machine through a waterproof cable penetrating through thewall surface of the laser welding torch. The induction heating assisted underwater laser cladding or additional material device can be widely used in the technical field of underwater laser cladding/additional materials.