Cooling device and method for variable cross-section structure in electric arc additive manufacturing process

Abstract

The invention provides a cooling device and method for a variable cross-section structure in an electric arc additive manufacturing process. The cooling device comprises a computer control system, a workbench, a bottom plate, an MIG welding gun, an infrared thermometer, a cold air gun and a clamping assembly, wherein the bottom plate is clamped on the surface of the workbench, the infrared thermometer is arranged on the side of the workbench in a close range, the MIG welding gun is connected with the cold air gun through the clamping assembly, the infrared thermometer monitors and feeds back temperature information in the additive manufacturing process to the computer control system in real time, and the cold air gun adaptively adjusts the flow and temperature of the cooling gas according to the fed-back temperature information so as to eliminate heat accumulation generated in the additive process and improve the additive precision. According to the cooling device and method, the problems of serious heat accumulation and poor forming precision in the electric arc additive manufacturing process are solved, meanwhile, the additive efficiency is guaranteed, and effective control over the forming precision and quality in the electric arc additive manufacturing process of the variable cross-section structural part can be achieved.

Description

[0001] Authors: Zhan Xiaohong, Liu Ting, Du Mingzhen, Wang Leilei Technical field: [0002] The invention belongs to the technical field of arc additive manufacturing, and in particular relates to a cooling device and method for arc additive manufacturing with a variable cross-section structure. Background technique [0003] Wire Arc Additive Manufacturing (WAAM) is an additive manufacturing process that uses an arc as a heat source to manufacture dense metal solid components by layer-by-layer surfacing. It does not require traditional blanks, moulds, tools, fixtures and multiple processing procedures. According to computer graphics data, parts of any shape can be directly and quickly manufactured on the equipment, realizing "free manufacturing", greatly reducing processing procedures, and low cost. Green and environmentally friendly, it can effectively reduce the development cost and risk of new products, and has become one of the most promising economical and rapid forming...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the existing arc additive manufacturing technology, the present invention provides a cooling device and method for the arc additive manufacturing process with a variable cross-section structure, which can effectively avoid the problems of poor shape and low forming accuracy of formed parts, and at the same time effectively alleviate the problems of increased The heat accumulation effect in the material manufacturing process can effectively improve the forming quality of the arc additive manufacturing formed parts with variable cross-section structure

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