METHOD FOR PRODUCTION OF SINTERED PRODUCTS FROM MONOAXIALLY PRESSED ELECTROEROSIVE NANODISPERSE LEAD BRONZE POWDERS

摘要

FIELD: working of metals.;SUBSTANCE: invention relates to methods of production of sintered products from lead bronze powders and can be used in manufacture of products for general mechanical engineering purposes. The method for production of sintered products from lead bronze powders includes pressing the bronze powder and sintering the pressed material producing a sintered product. Nano-sized spherical lead bronze powder produced by electroerosive dispersion of lead bronze waste in distilled water is subjected to pressing at a pulse repetition rate of 95 to 105 Hz, voltage on the electrodes of 190 to 200 V and capacitance of 65.5 mcF, the powder is pressed by monoaxial pressing at a pressure of 1500 MPa with exposure of 2 minutes, and the pressed material is sintered at a temperature of 827°C in an argon medium for 12 hours. ;EFFECT: reduced porosity and increased hardness of sintered products are ensured.;1 cl, 6 dwg, 3 ex