Method for manufacturing metal graphite brush

A method for manufacturing a metal graphite brush comprising the steps of:

• a. preparing natural graphite powders of about 60-70 wt %, electrolytic coppers of about 30-40 wt %, additives of about 2.5 wt % compounded of molybdenum disulfide and lead, and adhesives of about 1% to 15% which are the mixed resin of novolak phenol resin and furfural resin at a weight ratio of about 50:50;
• b. adding the adhesives to the graphite powders so as to increase the bonding between the particles after firing;
• c. wet-mixing the adhesives with the graphite powders and preparing powders having a diameter less than 200 .mu.m;
• and,
• d. press-molding said powders at a pressure of 2-3 ton/cm.sub.2, firing at a temperature of 600-800 degrees C. and simultaneously attaching a lead wire thereto.

A method for manufacturing a metal graphite brush comprising the steps of:

• a. preparing natural graphite powders of about 60 wt % electrolytic coppers of about 35 wt %, additives of about 2.5 wt % comprising molybdenum disulfide and lead, and adhesives of 1-15 wt % which are a mixed resin of novolak phenol resin and furfural resin at a weight ratio of about 50:50;
• b. adding the adhesives to the graphite powders so as to increase the bonding between the particles after firing;
• c. wet-mixing the adhesives with the graphite powders and preparing powders having a diameter less than 200 .mu.m;
• and,
• d. press-molding said powders at a pressure of 2-3 ton/cm.sub.2, firing at a temperature of 600-800.degree. C. and simultaneously attaching a lead wire thereto.