The invention relates to a manufacturing method of a
bimetal self-lubricating bearing material, which comprises the following steps of: mixing
powder, namely uniformly mixing a certain proportion of mixed pure
metal powder of Cu, Sn and Pb and
graphite powder in an amount which is 5 to 10 percent of the total
mass of the mixed pure
metal powder in a
blender mixer;
coating the mixed powder on a steel plate, a stainless steel plate or a
bronze sheet and performing secondary
sintering, namely performing instant liquid-phase
sintering at the temperature higher than the
melting point of the Sn powder and lower than the
sintering temperature of a
copper alloy, wherein limited connection is formed between the Cu powder, a
solid solution is formed between the
tin and the
copper, the Pb powder is distributed between
copper and
tin solid solution
crystal boundaries or dendritic
crystal net cells in a form of single Pb particles, the primary positions of the Sn powder and Pb powder are vacant, and the
graphite is distributed at the positions; performing the secondary sintering according to the sintering temperature of the
copper alloy; and manufacturing the
bimetal self-lubricating bearing material by precisely rolling and annealing. The product has stable and reliable performance and is widely applied to machinery industry, such as a hydraulic
turbine guide vane bearing, a hydraulic
metal structure and metallurgical equipment.