39results about How to "Reduce dry friction coefficient" patented technology

The invention discloses a surface fatigue-resistant treatment process for a rotating bearing. The surface fatigue-resistant treatment process for the rotating bearing includes the first step of cleaning, the second step of primary pre-heating, the third step of primary salt bath nitriding, the fourth step of cleaning, the fifth step of primary carburizing treatment, the sixth step of secondary pre-heating, the seventh step of polishing, the eighth step of primary salt bath oxidizing, the ninth step of secondary carburizing treatment, the tenth step of secondary salt bath oxidizing and the eleventh step of rinsing. In the treatment process, salt bath nitriding is performed firstly, then crossed carburizing and salt bath oxidizing treatment is performed, the microhardness of the surface of a rotating bearing cladding layer is highest, the cladding layer is uniform in thickness, uniform in distribution, compact and complete, the combining capacity of the cladding layer and a base material is high, the salt corrosion resistance and the stress corrosion breakage resistance can be further improved, by using the rotating bearing treated through the process, the rotating bearing is stable in size and small in high temperature deformation, the surface hardness reaches HV2500 or above, the dry friction coefficient is reduced to 0.08-0.1, the abrasion resistance is improved by 450%, the fatigue service of the rotating bearing is 10-12 times that of conventional heat treatment, and the comprehensive performance meets the using requirement of an extremely severe environment.

The invention discloses a fork truck steel ring surface treatment process, which comprises the following steps of (1) cleaning; (2) acid washing; (3) surface preheating; (4) surface deterioration treatment; (5) cleaning and cold placement; (6) quenching treatment; (7) surface treatment agent treatment. When being used for treating the surface of a fork truck steel ring, the fork truck steel ring surface treatment process has the advantages that the wear resistant performance is good; the hardness is high; the toughness is high; the anti-impact performance is high; the subsequent quenching treatment is matched; the best quenching time and quenching temperature are optimized; the tempering time and the tempering temperature are regulated, so that the impact toughness and hardness of the fork truck steel ring are improved; in addition, the inner hardness and the outer hardness are balanced; the micro hardness of the surface of the coating layer of the fork truck steel ring is very high; the slat corrosion resistance and the stress corrosion cracking resistant performance can be further improved; in addition, the anti-fatigue intensity of the fork truck steel ring is greatly improved; the service life is prolonged, and is prolonged by 3 to 4 times through being compared with the service life of the untreated fork truck steel ring.

The invention discloses lifting type charging tray feeding and discharging equipment. The lifting type charging tray feeding and discharging equipment comprises an empty charging tray lifting mechanism, a discharge lifting mechanism and a moving mechanism. The empty charging tray lifting mechanism and the discharge lifting mechanism each comprise a lifting motor, a lead screw, a supporting plate and a guiding device, wherein the lead screw is connected with the lifting motor and vertically arranged; the supporting plate is in threaded connection with the lead screw and horizontally arranged; the guiding device is used for guiding ascending and descending of the supporting plate; a charging tray is borne by the supporting plate. The moving mechanism comprises a cross beam, a moving cylinder mounted on the cross beam and an unloading mechanism mounted on a piston of the moving cylinder. The moving cylinder drives the unloading mechanism to horizontally move between the empty charging tray lifting mechanism and the discharge lifting mechanism. According to the technical scheme, the lifting type charging tray feeding and discharging equipment has the beneficial effects that multiple empty charging trays can be placed at a time, and labor and time are saved; the charging trays can be taken at a time when all fully loaded with materials in the material taking process, and labor and time are saved.

The invention belongs to the technical field of composite materials and discloses a low-friction water lubricating macromolecular bearing composite material which is characterized by comprising ultra-high molecular weight polyethylene, polystyrene-ethylene-butylene triblock copolymer, polyvinyl alcohol, graphite and molybdenum disulfide, wherein each 100 parts of ultra-high molecular weight polyethylene is blended with 10-40 parts of polystyrene-ethylene-butylene triblock copolymer, 2-5 parts of polyvinyl alcohol, 2-10 parts of graphite and 1-5 parts of molybdenum disulfide. The low-friction water lubricating macromolecular bearing composite material provided by the invention is formed by adopting an effective material blending scheme.