PREPARATION OF METAL POWDERS FROM SILVER MELT FOR 3D PRINTING BY MELT DISPERSION METHOD

Abstract

The development and introduction of additive technologies in modern industry is due to the need of production in reducing waste, reducing the anthropogenic load on the environment and improving the environmental friendliness of production, reducing labor costs and improving technical and economic indicators, automation of the technological process in obtaining products for various purposes. The increase in the number of technological solutions that allow 3D printing is due to the mass interest in this issue, the availability of modern technologies and materials that make it possible to design, test and use printers in experimental and production conditions. The purpose of this work is to develop technological parameters for obtaining metal powder from silver melt for 3D technology by dispersion method. In the course of the work it was found that the formation of particles is significantly influenced by the breaking angles of the silver melt with highpressure water. Studies have shown that to obtain particles whose shape is close to spherical, with a diameter of 45–500 microns, it is effective to use the splitting angles α=45°, =42°. Upon receipt of the powder with the corners split =30, =45 и ==45 are formed irregular particles on the surface and discovered oxygen in the amount of 1.16 is 7.80 %.