SLM metal additive manufacturing defect real-time detection method and detecting device

Abstract

The invention discloses a SLM metal additive manufacturing defect real-time detection method and a detecting device. In existing metal additive manufacturing equipment, an ultrasonic laser generator and a signal receiver are integrated into a same device, a workpiece is detected in real time in the manufacturing process by ultrasonic laser, a receiving device receives displacement waves, the simulation processing is firstly performed and a laser cleaning process is obtained, and geometric information and position information of internal defects of the workpiece are obtained. Lasers do not needto be additionally arranged, and original processing laser is improved. By adjusting the processing laser, laser cleaning of the surface of the workpiece is achieved to improve the surface roughnessof the workpiece, and the instant processing of pore defects can be realized to improve the quality of the workpiece. The detecting device solves the problems that the detection precision of the traditional detection technology is not high, the workpiece detection process is separated from the production process, and the pore defects cannot be processed online after being detected, the high-precision online non-destructive detection and processing are realized, and the SLM additive manufacturing product quality is improved.

Description

technical field [0001] The invention relates to the field of additive manufacturing, in particular to a real-time detection method and detection device for SLM metal additive manufacturing defects. Background technique [0002] Since the SLM forming process is a coupling process accompanied by complex physics, chemistry, metallurgy and other multi-physics fields, the structure of the parts prepared by the laser melting deposition method is a non-equilibrium structure, so pores and inclusions are prone to occur inside the parts during the manufacturing process. , cracks and other microscopic defects. The existence of these defects seriously reduces the service performance of the formed part, and even leads to the damage and failure of the formed part. Therefore, the defect problem is a major obstacle restricting the development of laser additive manufacturing technology, and the research on defect detection methods can effectively promote the development of laser additive ma...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a real-time detection method and detection device based on SLM metal additive manufacturing defects in view of the deficiencies of the existing SLM metal additive manufacturing pore defect detection method and the problem of realizing defect processing

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