Low-melting-point metal wire for 3D printing and manufacturing method thereof

Abstract

The invention belongs to the field of 3D printing, and provides a low-melting-point metal wire for 3D printing. The metal wire comprises raw materials of a gallium-based alloy or a bismuth-based alloy or an indium-based alloy; and a manufacturing method of the metal wire comprises the following steps that (1) the raw materials are respectively weighed and put in a container, are put in a vacuum constant-temperature tank for constant-temperature treatment, and are taken out and stirred to prepare metal ink, or the prepared metal ink is mixed and stirred with nanometer particles or nonmetal small particles to prepare nanometer particle or nonmetal particle contained metal ink; and (2) the metal ink is sprayed on a basal plate to form a sheet and the sheet is cut into a strip to obtain the metal wire, or the metal ink is extruded onto the basal plate or wound on a rolling shaft and is cooled to obtain the metal wire. The low-melting-point metal wire is largely reduced in manufacturing cost, and is largely reduced in oxidation degree compared with metal powder; the low-melting-point metal wire can be conveniently applied to a household portable 3D printer with low cost; and printed products are convenient to be recycled.

Description

technical field [0001] The invention belongs to the field of 3D printing, and in particular relates to a low-melting-point metal wire used for 3D printing and a manufacturing method thereof. Background technique [0002] 3D printing is a kind of rapid prototyping technology. It is based on digital model files, and the model is segmented and discretized through software, and the printing process is decomposed, and then metal, plastic, ceramics, etc. And other materials are stacked and bonded layer by layer, and finally superimposed and formed to manufacture the designed end product. 3D printing technology has broad application prospects in aerospace, automobile, electronics and other fields. [0003] The current 3D printing of metal materials generally adopts the method of laser rapid prototyping, that is, irradiating the surface of the test piece with a high-power laser, melting the metal powder, forming a liquid molten pool, and then moving the laser beam to melt the powde...

AI Technical Summary

Problems solved by technology

At present, the most commonly used fuse wires are mainly ABS, artificial rubber, cast wax and polyester thermoplastics, etc., but these wires cannot realize devices with conductive functions because they do not have metal properties such as electrical conductivity and high strength.

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