Weld bead forming control system in electric arc additive manufacturing process and parameter optimization method thereof

Abstract

The invention relates to the technical field of electric arc additive manufacturing, in particular to a weld bead forming control system in an electric arc additive manufacturing process and a parameter optimization method of the weld bead forming control system. The weld bead forming control system in the electric arc additive manufacturing process comprises a computer control module, an off-lineprogramming module, an electric arc additive manufacturing system and a monitoring and feedback adjusting system; the off-line programming module designs a deposition path and sends the deposition path to the computer control module; the electric arc additive manufacturing system welds machined parts according to the deposition path; the monitoring and feedback adjusting system monitors the temperature of a molten pool; and the computer control module controls the electric arc additive manufacturing system to conduct welding according to data fed back by the off-line programming module and the monitoring and feedback system. According to the weld bead forming control system in an electric arc additive manufacturing process, change of the molten pool can be effectively reduced, stability in a deposition process can be improved, and technological parameters in a welding process can be effectively optimized through continuous feedback adjustment.

Description

technical field [0001] The invention relates to the technical field of arc additive manufacturing, and specifically relates to a weld bead forming control system and a parameter optimization method in the arc additive manufacturing process. Background technique [0002] The metal arc additive manufacturing technology uses the arc as the heat source to melt the material of the target part, and then obtains the target part by layer-by-layer stacking. Compared with the traditional manufacturing process, its manufacturing cycle is short, the degree of flexibility is high, it is easy to realize digital, intelligent and parallel manufacturing, and it is suitable for small batch production. It has the advantages of high material utilization rate, low cost and low pollution. It has been used in high-tech fields such as aerospace, national defense and military industry. [0003] However, arc additive manufacturing is a complex metal micro-smelting process, and its temperature and w...

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Problems solved by technology

[0003] However, arc additive manufacturing is a complex metal micro-smelting process, its temperature and welding state are constantly changing, and the shape of formed parts is difficult to control due to the instability of the molten pool during the additive process, resulting in more stress in the internal structure after forming. Concentration has a great influence on the shape and size of the formed part, so the negative feedback control in the forming process is very important

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