A high energy beam additive manufacturing method for a suspended structure of a metal part

Abstract

The present invention is a high-energy beam additive manufacturing method for a suspended structure of a metal part, comprising the following steps: step 1: establishing an overall forming process model of the metal part; step 2: splitting the overall forming process model; step 3: determining the forming of each suspended structure The fixed structure, shape and size of the supporting substrate; Step 4: According to the forming direction, first form the first part of the model structure, after the forming is completed, install and fix the first supporting substrate through the fixed structure corresponding to the first suspended structure; then continue to form the second Part of the model structure, while completing the forming of the second part of the model structure, the forming of the first suspended structure is realized based on the first supporting substrate; finally, the subsequent part of the model structure and the forming of the suspended structure are completed in the same way to obtain the whole Metal parts; step 5: heat-treating the formed metal parts and removing the support substrate, base material and spare parts to obtain an all-metal additive manufacturing component with a suspended structure.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a high-energy beam additive manufacturing method for suspended structures of metal parts. Background technique [0002] At present, additive manufacturing technology (3D printing), as an emerging technology field in the manufacturing industry, is developing rapidly and has received strong support from the state and local governments. Based on the manufacturing principle of discrete + stacking of additive manufacturing technology itself, and the advantages of rapid and near-net free forming, it is favored by technicians and researchers in the fields of aerospace, medical, automobile and mold manufacturing. [0003] As we all know, most aerospace metal parts have complex external surfaces and inner cavity structures to meet the needs of lightweight aircraft, which puts forward higher requirements for traditional manufacturing technology, and traditional manufacturing...

AI Technical Summary

Problems solved by technology

However, the technique also has its limitations

Since the principle of high-energy beam metal additive manufacturing technology determines that the additive manufacturing must be cladding of the previous layer as the substrate for the latter layer, so when forming a suspended structure with a large inclination, there will be a problem of the previous layer against the subsequent layer. The problem of insufficient support, so that the formation of structures with large inclinations cannot be realized

The limitations of high-energy beam metal additive manufacturing technology in the formation of large-inclination suspended structures will greatly reduce the complexity of the manufacturing components of this technology, thus limiting its application in the manufacture of complex structural parts

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