An additive manufacturing process for metal parts

Abstract

An additive manufacturing process for metal parts, comprising the following steps: S101: slice a prefabricated three-dimensional model; S102: generate an additive deposition path corresponding to each layer of the three-dimensional model slice; S103: slice each layer corresponding to the three-dimensional model The additive deposition path generates the additive molding path and the laser scanning path; S104: The molding machine drives the material box according to the additive molding path; S105: The material box releases the metal powder according to the additive molding path; S106: The molding surface corrector controls the metal powder Carry out shaping; S107: The material recovery box recycles the rejected metal powder; S108: The forming surface preheater preheats the forming surface formed by the metal powder; S109: If the forming surface is preheated, the laser former is turned on; S110: Laser forming The laser scan path is acquired by the laser shaper, and the laser shaper scans and shapes the metal powder on the preset molding surface along the preset laser scanning path at a preset scanning speed; S111: loop steps S104‑S110 until the parts are piled up and formed layer by layer .

Description

technical field [0001] The invention relates to the field of additive manufacturing, in particular to an additive manufacturing process for metal parts. Background technique [0002] 3D printing technology is a technology that uses CAD design data to manufacture solid parts by layer-by-layer accumulation of materials. Compared with traditional cutting processing technology, it is a bottom-up material accumulation manufacturing method. Commonly used for prototype or model manufacturing in teaching, mold, aerospace and other neighborhoods. [0003] At present, additive manufacturing represented by 3D printing has become a main process of rapid prototyping. 3D printing technologies for printable metal parts include: LOM (Layered Solid Manufacturing), 3DP (Three-Dimensional Printing), SLS (Selective Laser Sintering), SLM (Selective Laser Melting), LSF (Laser Stereoforming), etc. The LOM forming principle is to use the laser to cut the metal foil of the film material coated wit...

AI Technical Summary

Problems solved by technology

The material utilization rate of LOM technology is low, the tensile strength of the manufactured metal parts is poor, and the surface of the parts has step texture

3DP printing uses the liquid binder sprayed by the nozzle to bond the metal powder laid on the powder bed to form, and the strength of the part is very low

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