399results about How to "Good anti-friction" patented technology

The present invention relates to a hydraulic-transmission- braking three-use lubricating oil composition, which is prepared by mixing the following raw materials, by weight, 85-98% of high viscosity index base oil, 0.1-5% of an extreme pressure wear resistance agent, 0.1-4% of an antioxidant, 0.1-3% of a metal deactivator/antirust agent, 0.1-5% of a friction modifier, and 0.1-2% of a dispersing agent. The hydraulic-transmission- braking three-use lubricating oil composition has beneficial effects of good low temperature fluidity, friction reduction, wear resistance, corrosion resistance, rust resistance, emulsification resistance and foaming resistance, and can meet requirements of universal hydraulic transmission oil used by large-medium-sized tractors and construction machinery so as to achieve complete lubricating protection on hydraulic parts, transmission parts, gear parts, power output parts and braking parts, such that a long service life is provided, equipment operation stability is easily improved, and energy saving and consumption reduction are provided.

The invention discloses a method for preparing an antifriction wear-resistant coating on a metal matrix surface. The method comprises the following steps: (I) uniformly mixing wear-resistant powder with metal powder to obtain cladding powder; (II) performing laser cladding on the metal matrix surface by use of the cladding powder to form multiple cladding belts in horizontal-longitudinal crossing, wherein the cladding belts in horizontal-longitudinal crossing form a cladding skeleton of a mesh structure; and (III) filling the metal matrix surface with a lubricating phase, and polishing to obtain the antifriction wear-resistant coating on the metal matrix surface. According to the method disclosed by the invention, the cladding skeleton prepared on the metal matrix surface through the laser cladding process has a remarkably high hardness value; the cladding skeleton can realize a load dispersing function in a wear process to effectively prevent accumulation of plastic deformation on the metal matrix surface; and meanwhile, the mesh structure of the cladding skeleton realizes a support effect on the follow-up film forming process of the lubricating phase.

The invention relates to a method for preparing a titanium-alloy surface micro-arc oxidation antifriction compound film layer, which is characterized by comprising the following steps of: (1) micro-arc oxidation of an electrolyte; and (2) preparation of a compound film. The invention has the technical effects that: 1. the method provided by the invention is used for preparing the micro-arc oxidation compound film layer with an antifriction effect by introducing a solid lubricant and experimenting on a one-step method in the titanium-alloy micro-arc oxidation process on the premise of not destroying a micro-arc oxidation film layer, and the antifriction effect is remarkable; and 2. the composition raw materials of a sodium-silicate system electrolyte adopted by the invention are simply and easily obtained, a solution is neutral or weakly alkaline, the solution does not contain heavy metal ions, such as chromium ions and the like or environment-friendly constraint elements and does not contain substances harmful to human bodies and environments, the environmental pollution is small, and the requirements of high-quality clean production are satisfied.

This invention relates to a hybrid fiber reinforcement compound material pantograph slide plate with lamination used in railway electric locomotives and its preparation method, which takes a metal net and hybrid fiber reinforcement compound material as the backing of said slide plate and makes them distribute in lamination, among which, phenolic resin is taken as the matrix, hybrid fiber as the reinforcement agent, rubber, graphite, copper powder, baritite and at least three kinds in SiO2 as the friction performance modifiers of the compound material to be mixed fully to be hot-pressed with the metal net to form a pantograph slide plate.

The invention discloses a lubricant for drilling fluid and belongs to the technical field of chemical agents for petroleum drilling engineering. The lubricant for the drilling fluid contains the following ingredients in parts by weight: 35-90 parts of vegetable oil, 10-25 parts of synthesized ester type oily agent, 9-21 parts of emulsifier, 3-8 parts of extreme-pressure antiwear agent, 6-18 parts of organic molybdenum compound, 10-12 parts of nano metal powder, 7-15 parts of dispersant, 5-9 parts of graphite powder, 3-8 parts of antifoamer, 4-7 parts of surfactant and 4-8 parts of antioxidant. According to the lubricant for the drilling fluid, disclosed by the invention, the vegetable oil serves as a main raw material, and other additives are added as adjuvants, so that the lubricating property of the drilling fluid can be remarkably improved after the lubricant is added into the drilling fluid; and meanwhile, the lubricant has high-temperature and high-pressure resisting characteristics and antiwear and antifriction properties and is free of a mineral oil ingredient, and the additives are also free of sulfur and phosphorus, so that the lubricant is environment-friendly.

The invention provides a method for a laser preparation of a titanium nitride gradient coating on a surface of titanium and titanium alloy. The method comprises the steps of performing surface cleaning treatment, surface blackening treatment and preheating treatment for a workpiece subatrate; and then carrying out laser nitriding treatment. The method is characterized in that the laser nitriding treatment is performed in a condition of filling reaction gas, and simultaneously laser scanning treatment and ultrasonic oscillating treatment for the surface of the workpiece subatrate are carried out. The titanium nitride gradient coating with a thickness of 50-200 [mu]m is obtained on the surface of the titanium and titanium alloy. The titanium nitride gradient coating is mainly composed of a nitride layer and a nitrogen diffusion layer, and has uniform transition of the coating microstructure. The surface hardness, wear resistance and corrosion resistance of the titanium nitride gradient coating are improved significantly than those of the matrix. Also, problems that crack are easy to produce, surface roughness is large, and the crystal grains of dendrite crystals of a nitride layer are coarse, in ordinary laser gas nitriding processes, are solved.

The invention relates to preparation of an aluminium nitride and copper mixed nanometer lubricating grease additive and an application thereof, and belongs to the technical field of lubrication. The nanometer lubricating grease additive disclosed by the invention is prepared from nanometer AIN and nanometer Cu in a mixing manner, wherein the particle size ranges of the AIN powder and the Cu powder are 50-200nm. The obtained additive is added to base lubricating grease, so that not only can the anti-wear antifriction performance of the base lubricating grease be improved, but also the base lubricating grease can act on the surface of a friction pair, the roughness of the surface of the friction pair is improved, and a polishing scratch on the surface is repaired, so that the abrasion loss of the friction pair is reduced, the friction pair and the accuracy are effectively ensured, meanwhile, accumulation of heat on the friction surface is reduced, and the service life of the friction pair is prolonged. The test data show that compared with the lubricating grease to which the additive disclosed by the invention is not added, the friction coefficient of the lubricating grease to which the additive disclosed by the invention is added is reduced by 23.6-15.8%, and the friction durability is prolonged by 6-7 times.

The invention discloses a preparation method for a metal carbide coating. The metal carbide coating is prepared by adopting a multi-target magnetron sputtering equipment, taking pure metals (titanium, chromium and the like) and graphite as target materials, and performing the processes of vacuumizing, introducing argon, coating and the like. The preparation method for the metal carbide coating disclosed by the invention has the characteristics that the process is simple and stable, the coating components are controlled accurately, the processes are few, and the industrial production is easy to realize. The prepared metal carbide coating has the performance of high hardness, low friction coefficient and the like, and is suitable for performing deposition on the surfaces of a high-speed operating tool, a precise tool, a mold and the like; a workpiece can be endowed with high performance; the service life of a product can be prolonged.

The invention discloses a manufacturing method of a carbon fiber-reinforced copper-based pantograph slide plate material. The carbon fiber-reinforced copper-based pantograph slide plate material comprises copper, graphite and carbon fibers. The manufacturing method is characterized by comprising the following steps of preparing graphite and electrolytic copper powder into composite powder as a base material having a nano-structure by a mechanical alloying method, carrying out alloying treatment on carbon fiber surfaces so that copper planting layers having the thickness of 30-40 microns are covered on the carbon fiber surfaces, cutting the carbon fibers plated with copper into segments, and carrying out sintering to compound the segments and the base material. A pantograph slide plate prepared from the carbon fiber-reinforced copper-based pantograph slide plate material has the characteristics of good antifriction, good wear resistance, good conductivity and low arc sensitivity. The carbon fiber-reinforced copper-based pantograph slide plate material can be used for railway trains, subway trains and urban railway trains, can also be used for similar products of related industries such as motor brush and moving contact industries, and opens a new path for slide electric contact materials.

The invention opened a heat-proof and wearing self-lubricating material. It can be used to the shafting bearing, bearing bush, axile bush and the other break-away friction parts of the metallurgy, mining area and machine, especially for the parts of the high temperature (350 DEG C-800 DEG C).the weight ration of the composition is C 2.6-3.%, S 0.35-0.49%, Si 0.5-1.0%, Cr 18-35%, Mo 0.8-1.5%, Cu 0.8-1.2%, Al 1.5-5.0%, V 0.1-0.25%, B 0.05-0.15%, RE 0.008-0.08%, P<=0.3%, Ni<=0.3%, Mn<=0.3%, the residue is Fe. The weight ratio of Cr/C is 5.5-10. The material has the good resistance to heat and wearing character, also it can resist the corrosion of the CO2 and SO2.

The invention discloses a self-lubrication and wearing-resistant graphite-like / TiC grads compound film. The invention has the technical proposal that a TiC layer with a thickness of 50 to 250nm and a graphite-like with a thickness of 100 to 500mm thickness are sequentially plated on an alloy surface: a TiC compound transition layer and a graphite-like layer with a thickness of 300 to 1250nm form the graphite-like / TiC grads compound film. The content weight percentages of the grads compound film are: 54 to 75 percent of graphite-like and 25 to 46 percent of TiC. A total thickness of the grads compound film is between 0.45 to 2.0 Mum. The grads compound film is provided with a high wearing-resistant capability, an excellent interface joining capability and load bearing capability, and has a low friction coefficient and excellent friction environment stability in both vacuum and atmosphere, etc. The invention can be applied to manufacturing self-lubrication and wearing-resistant films, universally used in the vacuum and atmosphere, etc., of surfaces of mechanical parts such as bearings, gyroscopes and mini-type rotary shafts, etc.

The present invention discloses one kind of nanometer lubricating oil additive, which consists of liposoluble nanometer copper or copper alloy and liposoluble nanometer silica. The nanometer lubricating oil additive of the present invention can realize the self repair of the worn part, and possesses the functions of saving oil, resisting abrasion, reducing noise, decreasing carbon deposit, raising power performance, etc. It has high dispersivity in lubricating oil, high oxidation stability and long term stability, and is favorable to solving different friction and wear problems in different work conditions.

The invention discloses a high-strength antifriction double-layered iron base powder metallurgy material and a preparation method thereof. The preparation method comprises the following steps that a densification enhancer is mixed in a matrix, so that a matrix material is dense and high in strength; a compound pore-forming agent is mixed in a surface layer to enable a surface layer material to be porous and oil-bearing, and besides, the requirements on the hardness and the wear resistance of the surface layer are met, and the contact interface and the lubricating condition of a friction pair are kept stable, so that the novel high-strength antifriction double-layered iron base powder metallurgy material is prepared. The bearing property, the wear resistance and the antifriction anti-seizing property of the iron base powder metallurgy material are improved remarkably, and high strength and a high lubricating property are effectively combined.

The invention discloses a method for preparing a corrosion-resistant antifriction Cr-doped DLC (diamond-like carbon) coating. The method comprises the steps of placing a pretreated substrate on a rotating stand rod of arc and magnetron sputtering composite deposition equipment, taking a post arc Cr target as a Cr source and three pairs of flat targets C targets as C sources, and installing the three pairs of flat targets C on the inner wall of a furnace body in an opposite manner; adopting high-purity Ar as a main ionization gas to guarantee an effective glow discharge process; and adopting high-purity N2 as a reacting gas, ionizing the reacting gas and combining the reacting gas with Cr and C elements to deposit on the surface of the substrate so as to form the Cr-doped DLC coating. The prepared Cr-doped DLC coating has a smooth and compact surface, hardness of 20 GPa, binding force with the substrate of 80N, coating thickness of 2.0 micrometers, and excellent corrosion resistance and antifriction performance.

The invention relates to a compensated underwater brushless DC motor structure and an assembly method thereof. The motor structure comprises a motor end cover subassembly (1), a motor main body (2) and a compensator device (3), wherein the motor end cover subassembly (1) is positioned at the front end of the motor main body (2) and is fixedly connected with the motor main body (2) via bolts, the compensator device (3) is positioned at the tail of the motor main body (2) and connected with the motor main body (2) via bolts, and the compensator device (3) comprises a compensator skin (16), a compensator gland bush (17), a motor tail hood (19), a compensator spring (20) and a compensator screw cap (18). The motor structure has modularized design characteristic, the compensator device and the motor main body can be separated, and different compensator devices can be correspondingly adjusted or replaced for meeting different work environmental requirements so that the motor structure has the advantages of simple and compact structure, convenient assembly and debugging, and safe and reliable working and easy maintenance.

The invention relates to a preparation method of an h-BN (hexagonal Boron Nitride) added titanium boride-based self-lubricating ceramic cutter material. According to the method, the material is formed in such a way that TiB2 as a base body, added micron WC (Wolfram Carbide) as a reinforced phase, the micron h-BN as a solid lubricant, and micron Mo and micron Ni as sintering additives are sintered. The preparation method comprises the following steps: respectively dispersing the micron TiB2 powder, the micron WC powder and the micron h-BN powder, and carrying out ball milling and drying so as to obtain powders, and finally, sintering the powders through a hot pressing method. The method has the advantages of simplicity, convenience in operation and the like. The self-lubricating ceramic cutter material has an excellent comprehensive mechanical property and an anti-friction wear-resisting property, and can be used for fabricating cutting tools, dies and other friction-resistant corrosion-resistant parts.

The invention relates to a lubricating oil additive containing ultrafine rare-earth powder. The additive consists of the following components in percentage by mass: natural serpentine mineral powder, ultrafine rare-earth powder, surfactant, a dispersing agent, a friction modifier, an auxiliary and base oil, wherein the ultrafine rare-earth powder is one of cerium hydroxide, neodymium oxide and cerium fluoride; the surfactant is borate, span-60 or oleic acid; the dispersing agent is either polyisobutene dibutyl succinimide or high molecular weight polyisobutene dibutyl succinimide; the friction modifier is one of melamine cyanurate, boron nitride and calciuym nitride; the auxiliary comprises 72% of dialkyl disulfo oxygen molybdenum phosphate sulfide, 18% of polymethyl tetradecyl acrylate and 10% of a vinyl-propylene copolymer; and the base oil is 500SN base oil. The additive has obvious corrosion resistance; and after an engine is treated technically by using the self-repairing additive, the dry friction coefficient of the machine is reduced from original 0.05 to be less than 0.005 and therefore the surface abrasion is reduced.

The invention provides a nanometer hybrid material-modified epoxy resin self-lubricating composite coating layer and a preparation method thereof. The preparation method comprises the following stepsof firstly, preparing a carbon nanotube/graphene oxide/molybdenum disulfide nanometer hybrid material by a hydrothermal method, and adding the carbon nanotube/graphene oxide/molybdenum disulfide nanometer hybrid material into epoxy resin, a curing agent and an organic solvent, so as to obtain a mixed solution; spraying the mixed solution onto a substrate, curing and forming, so as to obtain an epoxy resin self-lubricating composite coating layer with high abrasion-reduction property and abrasion-resistant property. The nanometer hybrid material-modified epoxy resin self-lubricating composite coating layer has the advantages that the preparation method is novel; the abrasion-reduction property and abrasion-resistant property of the epoxy resin coating layer are enhanced by preparing the carbon nanotube/graphene oxide/molybdenum disulfide nanometer hybrid material for the first time; the conditions are mild, the operation is simple, and the large-area abrasion-reduction and abrasion-resistant coating layer is easy to prepare, and is suitable for large-scale production; the obtained composite coating layer is dense and uniform, and the lower friction coefficient and higher abrasion-resistant property are realized.

The invention relates to a mixed nanometer lubricating grease additive and application thereof, and belongs to the technical field of lubrication. The mixed nanometer lubricating grease additive consists of the following components in percentage by mass: 50 to 80 percent of Al2O3 powder, 5 to 15 percent of Cu powder and 15 to 35 percent of Al powder, wherein the particle sizes of the Al2O3 powder, the Cu powder and the Al powder are 20 to 60 nanometers. The prepared additive is added into base lubricating grease, so that the anti-extreme pressure, wear-resistant and antifriction performance of the base lubricating grease can be improved; and the additive can act on the surface of a friction pair to improve the roughness of the surface of the friction pair and repair the grinding cracks on the surface, so that the abrasion loss of the friction pair is reduced, the accuracy of the friction pair is ensured effectively and the service life of the friction pair is prolonged. Experimental data display that compared with the lubricating grease into which the additive is not added, the lubricating grease into which the additive is added has the advantages that the friction coefficients are reduced by 42 to 79 percent, and the anti-extreme pressure performance is improved by 36.8 to 47.4 percent.

The invention discloses a self-lubricating titanium diboride (TiB2)/diamond-like carbon (DLC) hard coating and a preparing method of the coating. According to the TiB2/DLC hard coating, a bipolar pulse magneto-sputtering deposition technology is adopted to enable a TiB2 ceramic layer and a DLC layer to be periodically overlaid on a base to form the coating; the modulation period of the TiB2/DLC hard coating ranges from 15 nm to 60 nm, and the total thickness of the coating ranges from 1.2 micrometers to 1.4 micrometers; according to the TiB2/DLC hard coating, advantages of TiB2 and advantages of DLC are integrated, the coating has the excellent hardness and lubricating characteristics, the good conducting property is achieved, meanwhile, the pulse magneto-sputtering deposition technology is convenient to operate, the process is simple, the preparing period is short, the cost is low, large-scale industrial production is facilitated, and the coating can be widely applied to fields of cutters, molds, microelectronics, protection and the like.

The invention discloses a high-property high-water based lubricant composition, which comprises the following parts: 95-99% water and 1-5% functional additive (lubricant and alkali) and lucricating additive with nanometer silica particle and soluble phosphate, wherein the even grain size of nanometer silica particle is 10-60nm; the high-water based lubricant consists of nanometer silica particle and soluble phosphate, which improves bearing capacity (PB value) and reduces spot-abrasion diameter (D3040); the water based lubricant is fit for metal manufacturing liquid to cut and polish.

The invention relates to a graphene laminated rubber glove which comprises a glove blank, a rubber layer and a graphene membrane layer, wherein the rubber layer is adhered to the outer surface of theglove blank; the graphene membrane layer covers the outer surface of the rubber layer; the rubber layer is made of graphene-free foamed rubber or non-foamed rubber. A preparation method of the glove comprises the following steps: preparing graphene-free rubber slurry, and soaking a knitted glove blank into the rubber slurry; preparing a graphene-latex dispersion, and further soaking the glove blank soaked into the rubber slurry into the graphene-latex dispersion; performing vulcanization drying, thereby obtaining the graphene laminated rubber glove. Due to secondary soaking, the rubber slurryof primary soaking is cured to form a rubber body structure part of the glove, and then the quality of the main body structure can meet related standards (EN388) and ensure basic working protection functions of gloves; due to secondary soaking, a graphene laminated membrane can be formed, so that a rubber surface formed by primary soaking can be protected, and various overall properties of a gloveproduct can be improved.