Open AccessRESEARCH OF INFLUENCE OF PARAMETERS OF DISPERSION IN THE PARTICLE SIZE COBALT POWDERS ARE OBTAINED FOR ADDITIVE TECHNOLOGIES EDM DISPERSION IN ALCOHOL
Author(s) -
Е. В. Агеева,
A. Yu. Altukhov,
А. А. Сысоев,
A. S. Osminina
Publication year - 2017
Publication title -
izvestiâ ûgo-zapadnogo gosudarstvennogo universiteta
Language(s) - English
Resource type - Journals
eISSN - 2686-6757
pISSN - 2223-1560
DOI - 10.21869/2223-1560-2017-21-5-70-77
Subject(s) - materials science , dispersion (optics) , raw material , particle size , dispersant , cobalt , dielectric , capacitance , grain size , particle (ecology) , alloy , metallurgy , chemical engineering , electrode , optoelectronics , chemistry , physics , oceanography , geology , optics , organic chemistry , engineering
Currently, there is a need of adaptation of the Russian production of powders and market metal-powder compositions under the conditions and requirements of modern installations additive 3D technologies. Based on the characteristics of the methods of obtaining spherical powders with the aim of obtaining spherical granules of the regulated grain technology offers electroerosion dispersion characterized by relatively low energy costs and environmental cleanliness of the process. The main advantage of the proposed technology is the use as raw materials waste, which is much cheaper than the pure components used in traditional technology. In addition, this technology allows to vary the granulometric composition of the obtained powder by changing electrical parameters. The aim of this work was to study the impact of dispersion on the particle size cobalt powders are obtained for additive technologies electroerosion dispersing in alcohol. For the proposed studies selected waste cobalt alloy brand CHMS "CELLET". As working fluid - a isobutyl alcohol. To obtain cobalt powders by the method of electroerosion dispersion used for the installation of AED dielectric materials. Waste was loaded into the reactor filled with the working liquid isobutyl alcohol, the process is carried out at the following electrical parameters: capacitance of the discharge capacitor 48 microfarads; pulse frequency 80 Hz; voltage: 100 (sample 1); 120 (sample 2); 140 (sample 3). The result of the local effects of intermittent electrical discharges between the electrodes was the destruction of the waste material with the formation of dispersed particles of powder. Granulometric composition of the obtained powders were investigated using the device Analysette 22 NanoTec . The results of the research aimed to study the impact of dispersion on the particle size cobalt powders are obtained for additive technologies EDM by dispersion in alcohol, it was found that when the voltage on the electrodes of 100 V, 120 V, 140 V, the average particle size is microns of 27.09, 31,59 33,61 µm and µm, respectively.