Closed Loop Control of 3d Laser Cladding
نویسنده
چکیده
In this paper, a heat input closed-loop control system based on infrared image sensing for 3D laser cladding is introduced. A high frame-rate (up to 800 frames/s) camera is installed coaxially on the top of the laser-nozzle setup. Complete of the infrared images of the molten pool can be acquired with a short nozzle-substrate distance in different scanning directions, eliminating the noise from the metal powder. The characteristics of the images show a clear relationship with the parameter variations of the cladding process. A closed-loop control system is built based on the feedback of the infrared image sensing. The control results show a great improvement in the geometrical accuracy of the part being built.
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تاریخ انتشار 2001