Selective laser sintering testing method and platform

Abstract

The invention provides a selective laser sintering testing method and platform. The testing platform comprises a sintering module and a detecting module, wherein the sintering module comprises a powder feeding unit, a sintering unit and a moving unit; the powder feeding unit is used for feeing powder into the sintering unit; the sintering unit is mounted on the moving unit and can move in all directions; the detecting module comprises a ray emitter, a ray receiving device, an air blower, a server and a communication module; and the detecting module can detect the quality of the single-layer sintered powder and the sintering quality between layers, so as to realize the comprehensive detection of the sintering quality. According to the selective laser sintering testing method and platform, the defect problems of selective laser sintering finished products can be found by detection, the thickness of the optimum sintering slice and the sintering effects of different powder materials are analyzed, the thickness of the optimum sintering slice and optimum powder material can be selected conveniently, and the sintering quality of products is improved.

Description

technical field [0001] The invention relates to the field of additive manufacturing, in particular to a test method and a test platform for selective laser sintering. Background technique [0002] Selective laser sintering technology refers to the use of infrared lasers as energy sources, and most of the modeling materials used are powder materials. During processing, the powder is first preheated to a temperature slightly lower than its melting point, and then the powder is paved under the action of a scraping stick; the laser beam is selectively sintered according to the information of the layered section under computer control, and one layer is completed. Then proceed to the next layer of sintering, remove the excess powder after all sintering, and then you can get the sintered parts. [0003] In recent years, selective laser sintering has attracted widespread attention due to its unique physical and chemical properties, mechanical properties and special functionalizatio...

AI Technical Summary

Problems solved by technology

It has great research value in special materials, high temperature resistant materials, multifunctional composite materials, etc. At the same time, due to the simplification of the sintering process, selective laser sintered parts have certain research defects, such as low densification, porosity, etc. Higher, lower green strength, etc., resulting in insufficient mechanical strength, density and other properties of the material, the current selective laser sintering test platform development technology is still not mature enough

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