3D printing method for attaching metallic material to surface of plastic piece

Abstract

The invention discloses a 3D printing method for attaching a metallic material to the surface of a plastic piece. According to the technical scheme, plastic powder and metallic powder are adopted as printing materials of a product component simultaneously for 3D printing, and consequently, the component is internally made of plastic, the plastic part of the component mainly bears force and plays a supporting role, and the outer surface of the component is made of metal, so that the component has performance such as electricity conduction like some metals. An all-metal 3D printing technology is not mature at present, and during printing, the process is complicated, high energy such as electron beams is required, and the cost is high; however, 3D printing for plastic materials is easy to realize. By adopting the 3D printing method, both the force-bearing and supporting purposes and functionality of the component are achieved, and remarkable economic overall performance is realized.

Description

Technical field: [0001] The invention relates to a 3D printing production method, in particular to the production of parts whose interior is plastic and whose surface layer is metal. Background technique: [0002] Three-dimensional printing (Three Dimensional Printing, 3 DP) is a rapid prototyping technology invented by the Massachusetts Institute of Technology (MIT) in the 1990s. To be precise, it should be an additive manufacturing (Additive Manufacturing, AM) technology. From the very beginning when the idea was proposed, the vision of making any object with any structure (Any-composition), any material (Any-material) and any geometric shape (Any-geometry) was established. 3DP works like an inkjet printer, but instead of ink, it ejects adhesive, liquid wax, plastic or resin. According to the different materials ejected, it can be divided into binder printing, molten wax printing and molten plastic coating (FDM). The print head can be replaced with a laser head, and las...

AI Technical Summary

Problems solved by technology

[0004] The technology of using 3D printing all-metal products has not been widely popularized due to various reasons. On the one hand, the equipment for printing metal is very expensive. The price is as high as 1.4 million euros, which is not affordable for ordinary metal parts. In addition, special metal printing materials are also very expensive