Dimensional analysis of copper spark erosion powder obtained isopropyl alcohol
Search and introduction of new methods of processing of copper waste is one of the most promising areas. In recent decades the studies of electro-erosion in the interelectrode gap is filled with a fluent contiguous granules of the metal and dielectric fluid to have the opportunity to create productive technology of producing the dispersed metal powders and their compounds. High performance poroshkoobraznye and the fineness of the product, environmental friendliness of the main technological process and possibility of obtaining fine powders of almost all conductive materials (including superhard, high-temperature and plastic) and their compounds with elements of the working fluid (carbides, oxides, hydroxides) determine the prospect and actuality of this area of research. The aim of this work was to study the dimensional characteristics of the copper powder obtained from waste copper-containing electroerosion dispersing. For the proposed research, selected waste electrical copper of grade M1. As the working fluid is isopropyl alcohol. At the decision of tasks used the modern methods of testing and research, including: particle size distribution and average size of the powders was determined by laser particle size analyzer "Analysette 22 NanoTec"; the specific surface area of powders was determined by one - and five-point BET method of gas adsorption analyzer "TriStar II 3020". On the basis of the conducted experimental research aimed to study the size characteristics of the copper powder obtained from waste copper-containing electroerosion dispersing in isopropyl alcohol found that copper powder the average particle size is 31,94 µm, and the arithmetic value 31,943 µm, specific surface area - 5976,75 cm2/cm3. The ratio of elongation (elongation) particle size µm 27,084 is 3.22, which speaks mainly of elliptical form particles of EDM copper. Research data allows to determine the rational area of practical applications of aluminum powder obtained by EED.