51results about How to "Good self-lubricating properties" patented technology

The invention discloses a bottom power taking self-locking electric bus battery box system capable of quickly changing a battery. The system comprises a battery box (1), a tray (2) used for bearing the battery box and arranged on an electric bus, mobile equipment (4) for conveying the battery box, and a grabbing device (5) arranged on the mobile equipment; and a battery box locking and unlocking device (3) is arranged on the tray. Through the system, automatic assembly of the battery box in the electric bus battery box system is realized, and the problems of over positioning, deformation of power wire connection pegs, breakage, arc discharge, welding, difficulty in automatically realizing unlocking due to impact of the battery box to a bolt of a locking mechanism in jolt and deformation of the battery box due to impact in jolt. The system is reasonable, reliable, simple and compact in structure, and can full-automatically, quickly and conveniently realize quick change of the power battery.

The invention provides a sliding bottom electricity-taking and self-locking electric bus battery quick-change pellet device. The electric bus battery quick-change tray device comprises a pellet and a locking and unlocking mechanism (3) mounted on the pellet. According to the invention, the battery box can be correctly positioned and reliably locked reasonably; the force is reasonably applied to the battery box; simple structure and simple and reasonable power wire splicing mode are obtained; and the arc discharge phenomenon can be effectively prevented.

The invention discloses a solid lubricating composite material and a manufacturing method thereof. Raw materials for the solid lubricating composite material comprise carbon nano tube, boron oxide and polytetrafluoroethylene. The manufacturing method comprises the following steps: grinding the carbon nano tube in a ball mill to form sectional structures, adding ethanol and surface dispersant into the carbon nano substances of the sectional structures, and treating the mixture by ultrasonic wave to obtain carbon nano liquid; taking boron oxide powder, polytetrafluoroethylene powder and the carbon nano liquid in percentage by weight, and mixing the three substances and stirring the mixture at a high speed to disperse the carbon nano liquid into the boron oxide and polytetrafluoroethylene powder so as to obtain a mixture; and die-pressing and molding the mixture, and demoulding the mixture to obtain the finished product solid lubricating composite material. The solid lubricating composite material prepared from the combination of the carbon nano tube and the polytetrafluoroethylene with self-lubricating property greatly improves the technical indexes such as low friction coefficient, self-lubricating property, abrasion resistance and the like, can conduct heat and electricity and eliminate static electricity produced by friction, and can be continuously produced in batch with lower cost.

The invention discloses a continuous carbon fiber sucker rod with a wear-resistant protective layer and a preparation method thereof. The continuous carbon fiber sucker rod comprises a sucker rod body, a glass fiber layer coated on the surface of the sucker rod body, and a wear-resistant layer coated at the outer side of the glass fiber layer, wherein the wear-resistant layer comprises a fiber-reinforced fabric and a thermoplastic resin layer coated on the surface of the fiber-reinforced fabric, and hard wear-resistant particles are uniformly mixed in the thermoplastic resin layer, so that the hard wear-resistant particles are uniformly distributed on the surface of the wear-resistant layer. The hard wear-resistant particles are uniformly distributed on the surface of the sucker rod, and by virtue of the high hardness and high wear resistance of inorganic hard particles and the ball form formed with the mesh fabric structure, the eccentric wear resistance of the wear-resistant layer on the surface of the composite sucker rod is strengthened. Meanwhile, the part where the hard wear-resistant particles are in contact with the interface of the sucker rod body plays a role of interface mechanical meshing, thereby preventing the wear-resistant protective layer from slipping and layering from the surface of the sucker rod.

The invention discloses a hybrid carbon nanotube reinforced wear-resistant anti-friction ceramic coating and a preparation method thereof, and belongs to the technical field of cermet coatings. The preparation method includes preparing micron zinc oxide sol according to a sol-gel method, reacting the micron zinc oxide sol with a hybrid carbon nanotube, treated by a mixed-acid oxidation method, togenerate a zinc oxide/carbon nanotube composite, adding the zinc oxide/carbon nanotube composite as a nano additive to an adhesive ceramic coating, and solidifying the adhesive ceramic coating to obtain the wear-resistant anti-friction ceramic coating. Compared with non-hybridized carbon nanotube reinforced ceramic coatings, the hybrid carbon nanotube reinforced wear-resistant anti-friction ceramic coating has the advantages that the bonding strength to a coating ceramic phase is high, and the friction coefficient and wear rate can be remarkably reduced in a room-temperature or high-temperature environment, so that the ceramic coating can be applied to surfaces of parts bearing collision and abrasion and has a broad application prospect.

The invention discloses a copper-based dispersive bimetallic self-lubricating material and a method for preparing a self-lubricating base material. The method for preparing the base material comprises the following steps of: 1, mixing, namely mixing copper-based alloy powder and solid lubricant powder, wherein the solid lubricant powder comprises molybdenum disulfide and graphite, and the weight ratio of the copper-based alloy powder to the molybdenum disulfide to the graphite is (87-96):(0.5-3):(3-8); 2, spreading the powder, namely uniformly spreading the mixed powder on a metal plate; 3, loosely packing and sintering, namely heating and sintering the metal plate with spread powder at the temperature of between 650 and 1,000 DEG C under protective atmosphere; 4, rolling, namely rolling the metal plate in the step 3 into a semi-finished product; and 5, resintering, namely heating and sintering the semi-finished product at the temperature of between 650 and 1,000 DEG C under the protective atmosphere.

The invention discloses a CuNiSn alloy-based self-lubricating composite material used at the room temperature to 500 DEG C and a preparation method thereof. The material is composed of, by mass, 1-12% of Ni, 3-6% of Sn, 0.5-3% of Fe, 0.01-0.08% of Al, 0.01-0.08% of Ti, 1.0-4.0% of graphite, 1.0-6.0% of PbO, 0.1-1.0% of CeF3 and the balance Cu. The material has high-hardness, high-strength, low-friction, abrasion-resistant and self-lubricating characteristics at the room temperature to 500 DEG C and is suitable for manufacturing sliding bearings, sliding plates, rolling bearing holding frames or other parts for equipment within the temperature range.

The embodiment of the invention relates to a bearing cage used for rolling bearings. The bearing cage (10) has a plurality of bearing cage segments (11) for accommodating rolling bodies in rolling body pockets (13) formed through the bearing cage segments (11). Each bearing cage segment comprises a coupling arrangement (14), which is formed to arrange the segments on a carrier ring (12) that is formed as a lamellar ring. The bearing cage (10) has at least one carrier ring (12) that is formed as a lamellar ring, the carrier ring (12) brings the segments on the carrier ring by the coupling arrangement (14), so that at least one rolling body pocket (13) is formed by two bearing cage segments (11) arranged in a circumferential direction adjacent to the carrier ring.

The invention provides a VC/a-C:H nano-composite coating, which is prepared from hard-phase nanocrystal VC and lubricating-phase amorphous a-C:H, wherein the a-C:H is taken as a matrix and the nanocrystal VC is dispersed into the matrix, so that the characteristics of high hardness and low abrasion of a traditional VC hard coating are kept, meanwhile, the VC/a-C:H nano-composite coating has excellent self-lubricating characteristics of the a-C:H material, can play a good protecting role on a substrate operating in high-abrasion and high-friction environments and has good application value. The invention further provides a preparation method. A multi-arc ion plating technology is adopted, a metal V is taken as a target material, C2H2 is taken as a reaction gas, the content of a V element and a C element in the coating can be regulated and controlled through controlling the gas flow of V target current and/or a carbon source C2H2, so that the contents of a VC phase and an a-C:H phase in the coating are regulated and controlled.

The invention discloses a micro-drill for copper alloy processing and a preparation method thereof. The micro-drill comprises a micro-drill base body and a thin film deposited on the surface of the micro-drill base body; and the thin layer consists of three film layers; a transitional metal element film layer, a transitional metal carbide film layer and a diamond-like carbon film layer are arranged on the surface of the micro-drill base body in sequence from inside to outside. The preparation method comprises the step that: after the tip of the micro-drill base body is shielded by metal wires, the deposition of three film layers is carried out on the micro-drill base body by a linear ion source or/and a magnetic control sputtering source. The invention takes the shielding measures with metal wires on the tip of the high-speed steel micro-drill, and then carries out deposition of a plurality of layers of films, thus greatly improving the wear resistance and anti-adhesion performance, service life and processing quality of the micro-drill for copper alloy processing.

The invention relates to the field of lubricating grease, in particular to composite lubricating grease for a heavy load bearing and a preparation method thereof. The composite lubricating grease is prepared from the following ingredients in percentage by weight: 99.2 to 99.8 percent of lithium-based lubricating grease and 0.2 to 0.8 percent of micro carbon spheres and nanometer particles. The micro carbon spheres and nanometer particles are uniformly distributed in the lithium-based lubricating grease by using ethanol as carriers. Compared with the existing ordinary lithium-based lubricating grease, the composite lubricating grease prepared after the ethanol evaporation has the advantage that the improvement is realized in aspects of friction heating, friction mark area and the like.

The invention discloses a preparation method of a titanium alloy grading powder laser cladding layer. The method comprises the following steps: 1) preprocessing a base titanium alloy material; and removing oxide skin, greasy dirt and rust on the surface; 2) sieving to grade 70 Ni cladded B4C powder being 5-140 microns in particle size; 3) mixing the graded powder at different particle size grade to prepare 70 Ni cladded B4C grading powder; 4) uniformly mixing the 70 Ni cladded B4C grading powder and TC4 powder based on ratio so as to obtain cladding mixing coating grading powder; and 5) prearranging the cladding mixing coating grading powde4 on the surface of the base titanium alloy material; and performing laser cladding on a test block with the cladding mixing coating grading powder through 3*12mm, 3*24mm, 6*12mm or 6*24mm rectangular wide spots under the conditions that the power is 2-8kw, the scanning speed is 5-20mm/s and the argon protection environment is provided, thus obtaining the titanium alloy grading powder laser cladding layer. The cladding layer prepared through the method is high in hardness, high in durability and high in self-lubricating performance.

The invention discloses a high-temperature self-lubricating composite material as well as a preparation method and application thereof, and relates to the technical field of wear-resistant materials. The preparation method comprises the following steps that after Ti3SiC2 powder and Cu powder are evenly mixed, under the vacuum condition, a spark plasma sintering process is adopted, the temperature is increased to 850-1350 DEG C, sintering is conducted for 5-10 min, then the temperature is decreased to 650-1100 DEG C, heat preservation is conducted for 10-20 min, and the Ti3SiC2/Cu high-temperature self-lubricating composite material is obtained. According to the invention, a spark plasma sintering (SPS) technology is adopted, the preparation of the block material is completed at a relatively low temperature within a relatively short time, and the problem of high-temperature decomposition of Ti3SiC2 can be solved.

The invention relates to the field of heat conduction master batch preparation and discloses a graphene heat conduction master batch for an elastomer material and a preparation method. The preparationmethod comprises the following steps: (1) dispersing expanded graphite into a polyethylene solution with a perfluoroalkyl ethyl methyl methacrylate monomer, and carrying out ultraviolet radiation soas to obtain PE-g-PFAMAE/expanded graphite; (2) carrying out peeling and extrusion so as to obtain a mixed material with dispersed graphene; (3) mixing and kneading the mixed material with porous elastomer microspheres and silicone, and carrying out extrusion pelletizing, thereby obtaining the graphene heat conduction master batch. According to the graphene heat conduction master batch disclosed by the invention, a solid lubricant is generated among expanded graphite layers, effective peeling and dispersion of graphene are achieved, the graphene is further adhered to and packaged inside the porous elastomer microspheres through the silicone to prepare the master batch, the problem of graphene clustering is effectively solved, and heat conduction properties of the graphene can be relativelywell brought into play.

The invention discloses a ternary composite self-repairing unfired sliding plate brick and a preparation method thereof. The ternary composite self-repairing unfired sliding plate brick is prepared from the following components in percentage by mass: 5 to 10 parts of macrocrystalline fused magnesite with the particle size of 3 to 1mm, 15 to 25 parts of macrocrystalline fused magnesite with the particle size of 2 to 1mm, 5 to 15 parts of macrocrystalline fused magnesite with the particle size of 1 to 0.5 mm, 5 to 10 parts of macrocrystalline fused magnesite with the particle size of 0.5 to 0mm, 12 to 20 parts of 200-mesh macrocrystalline fused magnesite, 1 to 4 parts of -197 graphite, 0.5 to 3 parts of Al4SiC4 micro powder, 0.5 to 2 parts of nano SiC micro powder, 3 to 8 parts of 325-mesh metal Al powder, 0.5 to 3 parts of 200-mesh metal Si powder, 0.5 to 2 parts of boron carbide, 0.5 to 1 part of silicon boride, 2 to 4 parts of thermosetting phenolic resin and 2 to 4 parts of organic silicon resin. The ternary composite self-repairing sliding plate brick has a self-repairing function when being used at high temperature, and the oxidation resistance and high-temperature stability of a sliding plate are remarkably improved.

The invention belongs to the technical field of lubricating functional materials, and particularly relates to low-friction self-lubricating acrylic resin, a preparation method and application thereofand low-friction self-lubricating marine antifouling paint. According to the structure of the low-friction self-lubricating acrylic resin provided by the invention, a silicone oil group is grafted andintroduced to construct a low-friction self-lubricating interface, so that the stability of the self-lubricating interface is improved while the mechanical property of the low-friction self-lubricating acrylic resin is remarkably improved; besides, an unsaturated organic acid divalent metal ion salt structure and sulfonic acid inner salt are introduced through grafting, so that the static antifouling property of the low-friction self-lubricating acrylic resin is enhanced, and the antifouling period is prolonged; in addition, a fluorine-containing acrylate structure and a silicone oil structure are introduced into a low-friction self-lubricating acrylic resin main chain, so that the surface energy of a coating containing the low-friction self-lubricating acrylic resin is favorably reduced,and the drag reduction performance is enhanced.

The invention provides a fuel pump (1), especially a high-pressure fuel pump of a common rail fuel system. The fuel pump comprises a metal pump cylinder (10) and a metal pump piston (20) movably guided therein. The fuel pump is manufactured by a manufacture technology with lower cost. Moreover, the pump piston (20) is made of a support material without heat treatment and coatings, wherein the support material is formed by a plastic alloy or a copper alloy.