3d printing method for manufacturing metal part or ceramic part through resin

Abstract

The invention discloses a 3d printing method for manufacturing a metal part or a ceramic part through resin. The 3d printing method comprises the following steps that S1, a photosensitive resin preparation process is conducted; S2, nano metal particles can be pretreated or not pretreated, and nano ceramic particles must be pretreated; S3, slurry is prepared; S4, FDM printing is carried out; S5, the printed object is cleaned; S6, supports are removed, wherein redundant supports on the printed object are removed; S7, degreasing is carried out; S8, sintering is conducted, wherein some metals needto be sintered in a specific atmosphere or vacuum. As an FDM method needs high-viscosity resin, the sedimentation problem of particles does not need to be considered. Compared with the prior art, a resin material with metal particles or ceramic particles having a volume fraction of 60%-95% can be prepared.

Description

Technical field [0001] The present invention relates to the field of additive manufacturing techniques, in particular a 3D printing method for producing a metal member or a ceramic member. Background technique [0002] The metal material is the basic material of the mechanical industry. At present, the metal processing method is mainly under a conventional reduction method such as stamping, sheet metal, cutting, casting, etc. Metal 3D printing is dominated by the selection of laser melts (SLM), laser near net molding (LENS) and electron beam smelting (EBM) technology, etc., the equipment and materials are extremely expensive, complex process, high use cost, application is limited to aviation The high profit industries such as aerospace, senior molds, dental, jewelery are hard to be accepted by ordinary industrial enterprises. [0003] The above 3D printing metal is also present in the following defects: [0004] 1, easy to warphew; [0005] 2, rough surface; [0006] 3, many mate...

AI Technical Summary

Problems solved by technology

[0004] 1. Easy to warp and deform;

[0005] 2. Rough surface;

[0007] 4. The printing quality is greatly affected by the experience of engineers

3D printed ceramics include selective laser melting (SLM), light-cured ceramic resin re-sintering, etc. The equipment and materials are expensive, the process is complicated, the cost of use is high, and the application is greatly limited. Even the high-profit dental industry is difficult to accept.

[0009] Nowadays, some companies use FDM technology to print plastic wires containing metal particles. The material cost is lower than the above methods, but the technical requirements of printing equipment and post-processing equipment are much higher than ordinary FDM printing equipment, and they are also much more expensive (per set About 2 million RMB) and the metal content of the material is low, generally 50%~80%