Part surface temperature control device and control method in electric arc additive manufacturing process

Abstract

The invention belongs to the field of additive manufacturing, and relates to a part surface temperature control device and control method in the electric arc additive manufacturing process, and the part surface temperature control device comprises a control system, a welding gun, a servo motor, an air blowing device and a machine tool moving system. The control system is connected with the machine tool moving system. The machine tool moving system is connected with the welding gun through the servo motor. The air blowing device is connected with the machine tool moving system and moves synchronously with the welding gun. The bottom of the air blowing device and the bottom of the welding gun are on the same plane. According to the part surface temperature control device and control method in the electric arc additive manufacturing process, the interlayer waiting time can be shortened, and the mechanical property and the forming efficiency of the electric arc additive forming part can be improved.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and relates to a control device and a control method for the surface temperature of a part, in particular to a control device and a control method for the surface temperature of a part in the arc additive manufacturing process. [0002] technical background [0003] Additive Manufacture Technology (Additive Manufacture Technology), also known as 3D printing technology, is based on the three-dimensional digital model of parts, using metal powder, metal wire or non-metallic materials as raw materials, using layered slicing, step by step The method of layer accumulation, the technology to realize the rapid prototyping of parts, has the advantages of high material utilization rate, short molding cycle, and small forming limitation. Especially for products with complex structures and high value-added materials, the advantages of rapid and efficient forming are more and more obvious. This also mak...

AI Technical Summary

Problems solved by technology

Although this method can achieve the purpose of reducing the surface temperature of the part to a certain extent, it also increases the forming time of the part virtually, making it difficult to show the advantages of the short cycle of arc additive material forming

On the other hand, since each layer of accumulation is completed, the deposition layer is still in the high temperature zone, and with the increase of the accumulation height, the residence time in the high temperature zone is prolonged, and the oxidation is further aggravated, which makes it difficult to start the arc when the next layer is deposited, which affects the deposition efficiency , at the same time, staying in the high temperature zone for a long time will lead to serious grain coarsening inside the part, reducing the mechanical properties of the formed part

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