Metal powder 3D forming method through multi-nozzle collaborative control

Abstract

The invention discloses a metal powder 3D forming method through multi-nozzle collaborative control. The forming method comprises the following steps that an adhesive is sprayed through two nozzles of a 3D printer, and metal powder in a forming chamber is subjected to layer-by-layer superposition and bonding forming to obtain a needed metal part blank body; the part blank body is subjected to an infiltration treatment, then the part blank body is degreased through a solvent to remove the adhesive inside the part blank body, gaps and air holes are formed inside the part blank body after the adhesive is removed, and then the gaps and the air holes are further removed through the infiltration treatment process, and therefore the gaps and the air holes are filled; then the part blank body is placed in a vacuum sintering furnace for sintering to gradually remove the residual gaps and air holes inside the part blank body; and the part is made to become dense from loose, so that the part with required density and high strength are obtained. According to the forming method, the technical defect that the strength of the part machined in the prior art is low, only a concept model can be made, and a functional part can not be made is overcome.

Description

technical field [0001] The invention relates to a 3D printing process, in particular to a multi-nozzle cooperative control metal powder 3D (3DP) forming method. Background technique [0002] 3D printing technology began to appear in the 1980s. After nearly 30 years of development, the technology has become more and more mature, and its applications have become more and more extensive. More and more are used in mold manufacturing, industrial design, biomedical and aerospace. and other fields. [0003] From the development point of view, since the initial principle based on layered manufacturing was proposed, various new 3D printing processes have emerged, including LOM, 3DP, SLA, FDM, SLS, SLM, and EBM. [0004] From the perspective of printing materials, the current applications are mainly polymer materials and metal materials. The polymer materials mainly include silk, powder and liquid photosensitive materials. For example, FDM technology mainly uses two kinds of filament...

AI Technical Summary

Problems solved by technology

It solves the technical problem that the strength of the parts processed by the existing technology is low, and it can only be used as a conceptual model, but not as a functional part.

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