Dimensional analysis of powders obtained by electroerosive dispersion of tungsten-titanium-cobalt hard alloy in kerosene

E. V. Ageev ; V. O. Podanov ; A. E. Ageeva ; S. N. Kutepov ; O. V. Kuzovleva

Čebyševskij sbornik, Tome 23 (2022) no. 5, pp. 161-171

Résumé

Currently, one of the main problems of widespread use in mechanical engineering of tungsten-titanium-cobalt hard alloy is the high cost of alloying components that make up its composition, tungsten and titanium. In addition, this alloy has a sufficiently high melting point, which makes it difficult to recycle it for secondary use. One of the promising methods of their processing into spherical powders is electroerosive dispersion. To date, there is no complete information in the modern scientific and technical literature on the use of particles dispersed by electroerosion of tungsten-titanium-cobalt hard alloy of the T5K10 brand as a charge for the production of hard alloys and cutting tools from them. For these purposes, comprehensive theoretical and experimental studies are required. The purpose of this work was to conduct a dimensional analysis of particles of carbide powder obtained by electroerosive dispersion of tungsten-titanium-cobalt hard alloy in kerosene. Electroerosive dispersion of tungsten-titanium-cobalt hard alloy waste of the T5K10 brand was carried out on an experimental installation (RF Patent No. 2449859). As a result of exposure to short-term electrical discharges, carbide particles of various shapes and sizes were formed. The dimensional characteristics of the powder particles obtained from the tungsten-titanium-cobalt hard alloy were studied using the Analysette 22 NanoTec laser particle size analyzer. Based on the conducted experimental studies, it was found that the powder obtained by electroerosive dispersion of tungsten-titanium-cobalt hard alloy T5K10 grade in kerosene contains: 10% of particles with a size up to 5,592 microns; 20% of particles with a size up to 9,871 microns; 30% of particles with a size up to 13,483 microns; 40% of particles with a size up to 19,451 microns; 50% of particles with a size up to 24,996 microns; 60% of particles with a size up to 29,194 microns 70% of particles with a size up to 33,868microns; 80% of particles with a size up to 42.686 microns; 90% of particles with a size up to 56.121 microns; 99% of particles with a size up to 64.469 microns inclusive. At the same time, the particles of the carbide powder obtained by electroerosive dispersion of the tungsten-titanium-cobalt alloy T5K10 have sizes from 0.5 to 100 microns with an average volumetric diameter of 27,092 microns.

Détail

Keywords: tungsten-titanium-cobalt hard alloy waste, electroerosive dispersion, kerosene, powder particles, dimensional characteristics.