Method for preparing one kind of carbon brush composite tungsten disulfide

Method for preparing one kind of carbon brushes composite of tungsten disulfide, the percentage of the raw material component is quality: tungsten trioxide: Sulfur: SiC: catalyst = 1: (0.28-0.8) :( 0.006-0.38) :( 0.0005 to 0.005 ). Respectively first silicon carbide, tungsten trioxide formulated as a suspension, addition of dispersants, pH control, and the rare earth catalyst and sulfur were added to the urea prepared in absolute ethanol precursor solution, drying after mixing and aging, to give a mixed powder; mixed powder loaded boat, the furnace under an argon atmosphere trace amount of hydrogen introduced into the high temperature sintering finally obtain different size fractions of tungsten disulfide and the abrasive composites by a vibrating screen. The present invention is a hard carbide grinding performance and lubricating performance of organic binding tungsten disulfide, silicon carbide during working commutator surface, adsorbed on the silicon carbide surface and penetration to the interior of tungsten disulfide lubricate, reducing scratches and damage to the commutator surface.