FIELD: chemistry.
SUBSTANCE: invention relates to the manufacture of electrobrushes from a graphite-plastic powder composition. Method includes pressing a block of blanks of brushes from a graphite-plastic powder composition, dividing this block into separate blanks. Block of blanks is pressed with the height H=2h, where h is the height of the blank from a powder graphitoplast composition containing graphite. Pressing lead height double compression in heated to 170–190 °C mold with a pressing speed of 30–35 mm/s, with a specific pressure of 40–45 MPa and with reductions of 3–3.3.
EFFECT: increased hardness of working surfaces by 6–8 %.
1 cl, 1 dwg
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