METHOD AND SYSTEM FOR CONTROLLING DEFORMATION AMOUNT OF FUNCTIONAL COATING PREPARED BY HIGH-SPEED LASER CLADDING FOR DISC-LIKE PART

摘要

Provided by the present invention are a method and system for controlling the deformation amount of a functional coating prepared by high-speed laser cladding for a disc-like part. The system comprises a machine tool turntable, a machine tool tip, a rotating shaft, a laser range finder, a first laser cladding head, a second laser cladding head, and a control system for controlling the laser range finder, the first laser cladding head, the second laser cladding head and the rotation of the machine tool turntable. The present invention employs a high-speed laser cladding process to prepare a surface functional coating of the disc-like part. A central hole of the disc-like part is assembled and fastened to the shaft and rotates with the shaft at a high speed. Dual beams act synergistically on two sides of the disc-like part. A machining process is equipped with a laser molten pool temperature feedback closed-loop control system. By means of monitoring the molten pool temperature in real time, the laser power output is adjusted, and the heat input amount at a laser action point of the disc-like part is precisely controlled, thereby controlling the deformation of the disc-like part. The input of process parameters at two sides is the same, which ensures that the powder feeding amount, coating thickness and heat input amount on two sides are completely consistent, so that the deformation amount of the disc-like part is controllable.