Abstract
Currently, one of the promising methods of processing metal waste is electroerosive dispersion, which allows to obtain metal powder, including from the waste of tool steel P18. (Research Purpose) The research purpose is studying the properties and composition of the electroerosive powder obtained from the waste of P18 tool steel. (Materials and methods) Carried out grinding of waste steel P18 on an experimental installation by the method of electroerosive dispersion to obtain new powder materials. The process of electroerosive dispersion was carried out under certain installation modes. The granulometric composition of the particles of this powder was studied using the Analysette 22 NanoTec laser particle size analyzer. An experimental study was performed by dispersing ultrasound in a liquid. Metallography was studied using a Quanta 200 3D scanning electron microscope. X-ray spectral analysis was carried out using the scanning electron microscopy method with an energy-dispersion X-ray analyzer from EDAX, built into the Quanta 200 3D scanning electron microscope. The method of X-ray diffraction was used in X-ray diffraction analysis on a Rigaku Ultima IV diffractometer. (Results and discussion) It was shown that 50% of the powder particles correspond to the size of 44.13 micrometers. The elemental composition of the particles of the obtained metal powder from waste P18 was determined, the sample under study consists of the following chemical elements: carbon, oxygen, molybdenum, vanadium, chromium, iron and tungsten. The main phases of the powder material under study were established: Fe2W2C, FeV, Fe3O4. (Conclusions) Obtaining, studying the properties and composition of an experimental metal powder makes it possible to assess its potential for use in the production of products with specified characteristics, as well as hardening, restoration of car parts and agricultural machinery.
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