A laser rapid fabrication method of microporous copper foam

Abstract

The invention provides a rapid laser manufacturing method for micropore foamy copper. The rapid laser manufacturing method sequentially comprises the steps of (a) determining the components, the ratio and the particle size matching of foamable micro copper-based metal powder; (b) preparing the micro copper-based metal powder which has in-situ micro-area foaming performance; (c) carrying out three-dimensional modeling of parts; (d) saving an STL (Standard Template Library) file of a three-dimensional CAD (Computer Aided Design) mathematical model as a CLI (Command Line Interface) formatted file; (e) converting the CLI formatted file and outputting an AFI (Automatic Fault Indication) formatted file; (f) inputting the AFI formatted file to laser rapid prototyping equipment, and completing synchronous manufacturing of a micropore copper material and the parts. According to the rapid laser manufacturing method for the micropore foamy copper, provided by the invention, rapid laser preparation of a foamy copper material which has micron pore characteristics or a random complex shape and a random complex structure can be completed.

Description

technical field [0001] The invention belongs to the technical application field of laser rapid prototyping (additive manufacturing or 3D printing), and in particular relates to a laser rapid fabrication method of microporous copper foam. Background technique [0002] Foam metal materials, also known as porous metal materials, have a large number of application requirements in air filters, mufflers, static pressure spindles, guide rails and other products. For example, in static pressure spindles and guide rails, when the pressure gas passes through porous materials The throttling effect is better than that of other throttling forms, so the bearing capacity of the static pressure support can be greatly improved. At present, the preparation of porous metal foam materials mainly adopts powder metallurgy method and melt foaming method, but there are technical and technological bottlenecks such as complex preparation process, long manufacturing cycle, high processing cost, and di...

AI Technical Summary

Problems solved by technology

At present, the preparation of porous metal foam materials mainly adopts powder metallurgy method and melt foaming method, but there are technical and technological bottlenecks such as complex preparation process, long manufacturing cycle, high processing cost, and difficult control of pore characteristics, which seriously hinder the promotion. application

[0003] The traditional copper foam preparation technology requires high skills of operators, and also involves the production of molds, which is costly and risky, and it is difficult to obtain copper foam with micro-pore characteristics

Generally speaking, the traditional copper foam preparation requires a large amount of metal raw materials, large smelting furnaces, casting molds or powder metallurgy molds. There are many processes, long cycle times, and high costs, and it is impossible to achieve efficient and rapid preparation of foam copper; the biggest problem is that it is difficult to achieve Material preparation and parts molding are integrated, and the mechanical processing of foamed copper metal parts is very difficult; and the traditional method has low raw material utilization rate and high energy consumption, which cannot realize the green manufacturing of foamed copper, which is in line with the current energy saving proposed by my country for the manufacturing industry. Conflicting environmental requirements

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