METHOD OF PRODUCING SINTERED ARTICLES FROM ISOSTATICALLY PRESSED ELECTROEROSIVE NANOCOMPOSITE POWDERS OF LEAD BRONZE

摘要

FIELD: chemistry.;SUBSTANCE: invention relates to production of sintered articles from lead bronze powders. Electric spark separation of lead bronze wastes is performed in distilled water at electric erosion dispersion plant at pulse repetition frequency 95...105 Hz, voltage at electrodes 190...200 V and capacity of capacitors 65.5 mcF. Obtained powder is subjected to isostatic pressing during two minutes at 250 MPa, and then sintered compacted samples are sintered in tubular folding furnace for 12 hours at 827 °C in argon medium.;EFFECT: increased efficiency of the sintering process, as well as reduced porosity, is achieved.;1 cl, 6 dwg, 3 ex