Manufacturing method of double-high-energy-beam metal additive material

Abstract

The invention discloses a manufacturing method of a double-high-energy-beam metal additive material. The manufacturing method comprises the following steps: (a) determining a three-dimensional entitymodel of a forming component, and modeling; and (b) manufacturing an additive material of the forming component: carrying out slicing and layering on a mathematical model in the step (a), so as to obtain two-dimensional outline information of a section of each layer and generate a machining route, inputting information into a control system of additive material manufacturing equipment, and manufacturing the double-high-energy-beam metal additive material by taking metal powder as the raw material according to a preset machining route. According to the manufacturing method, the internal defectsof pores, incomplete fusion, cracks and the like of a formed part are avoided, the system error of the formed part and an original design is small, and the formed part is relatively high in dimensional accuracy, small in residual stress, low in surface roughness and high in comprehensive quality; and compared with the prior art, the manufacturing method has significant progress and industrial application values.

Description

technical field [0001] The invention relates to a metal additive manufacturing method, in particular to a dual high-energy beam metal additive manufacturing method, which belongs to the technical field of metal additive manufacturing. Background technique [0002] Additive manufacturing technology is a technology based on the method of material discrete-gradual accumulation to manufacture solid parts, usually using metal powder or wire as raw material, pre-layered by CAD model, using high-power energy beams to melt, accumulate and grow, directly from The CAD model completes the near-net shape of high-performance components in one step. Additive manufacturing is quite different from the traditional subtractive manufacturing process based on casting-forging-welding-heat treatment-cutting in terms of preparation mechanism and material defect formation mechanism. Compared with traditional subtractive and equal-material manufacturing methods, additive manufacturing technology si...

AI Technical Summary

Problems solved by technology

At the same time, additive manufacturing technology also provides new ways and new ideas for the manufacture of key components of superalloys and titanium alloys for aerospace. However, there are still internal defects such as pores, incomplete fusion, and cracks in the formed parts of additive manufacturing technology.

In addition, the additive manufacturing process is a process of "scanning point by point - lapping line by line - layer by layer accumulation". No matter how complicated the component is, its manufacturing process must also accumulate points into lines, lines into surfaces, and surfaces In this rapid melting-solidification process, the formation of each layer of material has a certain error from the original design due to extreme non-equilibrium solidification, and this error cannot be fully released in subsequent cycles, and will be The accumulation and transmission of the additive manufacturing process eventually lead to non-negligible system errors, that is, there is a certain gap between the component forming accuracy and the net shape part, the residual stress is large, and the surface is rough. These problems seriously affect the additive manufacturing process. application of manufacturing technology

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