58results about How to "Reduce wear scar diameter" patented technology

The invention relates to high-thermal conductivity lubricating oil and a preparation method thereof. The lubricating oil contains base oil and fluorinated graphene nanosheets, wherein the weight percent of content of the fluorinated graphene nanosheets is 0.01 to 10.0 %; and the preparation method comprises the steps as follows: firstly, preparing the fluorinated graphene nanosheets; and secondly, preparing the lubricating oil containing the fluorinated graphene nanosheets. The lubricating oil provided by the invention has the advantages of excellent antifriction effect, extremely high heat conduction capability and excellent stability and dispersibility.

The invention provides a lubricating oil additive based on modified nano alumina and a preparation method of the lubricating oil additive. The preparation method comprises steps as follows: (1) nano alumina is modified; (2) molybdenum disulfide, titanium dioxide, graphene oxide, oleic acid and modified nano alumina are put in a ball mill for ball milling, and a powdery mixture is obtained; (3) thepowdery mixture prepared in the step (2), dodecyl methyl methacrylate and vinyl acetate are mixed uniformly, and the lubricating oil additive is obtained. The prepared additive is added to the lubricating oil, so that the wear resistance of the lubricating oil is greatly improved, and besides, the wear spot diameter is notably reduced. The performance parameters of the lubricating oil with the additive oil added have no obvious change after the lubricating oil is stored for 3 months and 6 months, which proves that the modified nano alumina and doping of nano alumina with other nanoparticles have great influence on the performance of lubricating oil.

The invention relates to heat-conducting lubricating grease for a high-speed all-steel angular contact bearing and a preparation method of the lubricating grease; the heat-conducting lubricating grease for the high-speed all-steel angular contact bearing is composed of the following raw materials by weight: 85-95% of barium-base lubricating grease, 3-10% of a heat-conducting agent and 2-5% of antioxidant; according to a technical proposal of the invention, the heat-conducting agents namely nano particles are added based on composite barium-base lubricating grease; so that the heat-conducting lubricating grease has a higher speed coefficient and a preferable heat-conducting performance; the bearing is characterized by low noise, low temperature rising, low vibration and longer service life; in addition, situations that speed coefficient of current domestic lubricating grease is short of an operation demand and the current domestic lubricating grease has poor heat conductivity are solved; an electric main shaft oil supply device is eliminated; noise when the high-speed all-steel angular contact bearing is operated is reduced; and temperature rising and vibration values are reduced.

The invention discloses a Ni-P alloy nano-powder lubricant additive prepared from nickel and phosphorus recycled from electroless nickel plating waste liquid, and a using method thereof in different friction occasions, wherein Ni-P powder is subjected to in-situ dispersion and recovered from electroless nickel plating waste liquid, dispersed again and then prepared into the lubricant additive through certain steps, together with metal chemical friction modifiers, detergent-dispersant, oxygen corrosion-resistant agents, auxiliary performance regulator, stabilizer and base oil. The lubricant additive has the advantages of good suspension stability, capability of greatly reducing equipment friction and wear, greatly reducing the frequency of equipment maintenance and parts replacement and prolonging equipment lifespan and overhaul time limit, as well as good effect of saving energy and protecting environment. The lubricant additive can be widely used in gasoline/diesel internal combustion engines, general fluid machinery, mechanical chemical sealing pieces, transmission gearboxes and other occasions, can realize the recycling of nickel and phosphorus in the electroless nickel plating waste liquid with high added value in order to change pollutants into useful things, and realizes the coordination and unification of economic, environmental and social benefits.

The invention discloses an antiwear low corrosion nanometer hydraulic medium and a preparation method thereof. The nanometer hydraulic medium is composed of the following materials by mass: 92%-97% of water, 1%-3% of nanoparticles, 0.4%-1.5% of a dispersion stabilizer, 0,25%-1% of an antisettling stabilizer, 1.3%-2.35% of an antirust agent, and 0.05%-0.15% of a viscosity regulator. The nanometer hydraulic medium prepared by the method provided by the invention has good dispersion stability, good rheological properties, proper and adjustable viscosity, and has good antirust, friction reduction and antiwear properties. When the medium is applied in a hydraulic transmission system, the hydraulic system operates well, and has low leakage and reduced corrosion degree on hydraulic elements, and the wear scar diameter decreases.

The invention discloses high-wear-resistance lubricating oil, which is prepared from the following raw materials by weight: 80 to 90 parts of base oil, 2 to 3 parts of nano tungsten disulfide, 0.4 to0.6 part of a surfactant, 0.8 to 1 parts of a defoamer and 1.5 to 2 parts of an antiwear additive. The invention also discloses a preparation method of the lubricating oil. According to the lubricating oil, the nano tungsten disulfide is uniformly dispersed in the lubricating oil through the compounding of the nano tungsten disulfide and the surfactant, and the anti-wear and anti-friction effect of the nano-particles is exerted; by adding the anti-wear additive, a composite protective film is generated at the bearing friction interface and has excellent anti-wear and anti-friction performance;the lubricating oil is processed through special processing equipment, the lubricating oil can be fully, thoroughly and efficiently blended and processed so that components are evenly dispersed in the lubricating oil to exert corresponding effects and to ensure quality of the lubricating oil. The wear-resistant high-quality lubricating oil is obtained and suitable for tapered roller bearings, heavy-duty gear and other fields.

The invention discloses a formula of a wear-resistant and oxidation-resistant hydraulic oil composite agent, which comprises, by mass, the following components: 10-25% of long-chain primary alcohol dialkyl dithiophosphate zinc, 10-30% of di-tert-butyl-p-cresol, 0-15% of alkylated diphenylamine, 10-25% of tricresyl phosphate, 1-10% of high-base-number synthetic calcium sulfonate, 1-10% of dipolyisobutylene imide, 0-1% of dodecenyl succinic acid half ester, 1-8% of basic barium dinonylnaphthalene sulfonate, 1-3% of benzotriazole octadecylamine salt and 10-30% of base oil. The invention also discloses a preparation process of the composite agent, which comprises the following steps of: adding the hydraulic oil composite agent into a reaction kettle according to the mass percentage of each component in the formula of the hydraulic oil composite agent, heating to 70-80 DEG C, and stirring and cooling. The hydraulic oil prepared by the composite agent matched with the base oil has excellentoxidation and corrosion resistance, excellent abrasion resistance and better cleaning and dispersing performances.

The invention relates to amine phosphates and a preparation method thereof. The amine phosphates allow the hard water resistant stability of a cutting fluid to be substantially improved when an additive in the invention improves the emulsification capability, the lubrication performance and the antirust performance of the cutting fluid. According to the invention, a molecular structural formula of the amine phosphates is shown in the specification, and in the molecular structural formula, X is S or O, R is a long chain alkene group of C8-C100, R1 is hydramine or alkamine, and n is from 1 to 100. Above technical scheme allows problems in the specification to be well solved, and the amine phosphates can be used in industrial production of water-based cutting fluids.

The invention discloses a coupled dimercaptotriazine derivative, and a preparation method and a use thereof. 2,4,6-trichloro-1,3,5-triazine, amine and sodium bisulfide are adopted as raw materials and undergo substitution and coupling reactions to obtain the coupled dimercaptotriazine derivative. The coupled dimercaptotriazine derivative can be used through the combination with other lubricating greases and lubricating oil additives as an extreme-pressure anti-wear agent, and can also be individually used as a lubricating oil or a lubricating grease additive to make a lubricant have very good wear and extreme pressure resistances; the derivative in lithium-based grease can improve the PB value by 40-100% and reduce the wear scar diameter by 35-50%; and the derivative in rapeseed oil can improve the PB value by 45-65% and reduce the wear scar diameter by 25-45%.

The invention discloses emulsified cutting fluid, and relates to the technical field of industrial engineering lubrication. The emulsified cutting fluid is prepared from, by weight, 20-40 parts of mineral oil, 4-12 parts of tall oil, 3-7 parts of extreme pressure additives, 0.1-0.6 part of antirust agent, 0.2-1.5 parts of copper alloy anticorrosive agent, 0.1-1 part of antioxidant, 0.5-2 parts of defoaming agent, 0.5-1.5 parts of pour point reducer, and the balance deionized water. The emulsified cutting fluid has the good lubricity, diffusivity, cooling performance, cleaning performance, deslagging performance, corrosion resistance, rust resistance and foam resistance.

The invention discloses lubricating oil capable of remarkably reducing engine noise and a preparation method thereof, and belongs to the technical field of lubricating oil and additives. The lubricating oil is composed of the following components: 6-12% of a gasoline engine oil complexing agent; 5-15% of a viscosity index improver; 0.1-1% of a friction reducing agent; 0.1-0.5% of a pour point depressant; 38%-45% of base oil A; and 35-40% of base oil B. The preparation method comprises the following steps: sequentially adding the components into a blending kettle according to the high-low sequence, heating to 50-60 DEG C, heating and stirring for 2 hours, uniformly mixing, filtering while hot, and cooling to room temperature to obtain the product. By optimizing component selection, proportion and preparation process, the obtained lubricating oil has excellent wear resistance, cleaning and dispersing performance, high-temperature oxidation resistance and the like, can remarkably reduce the working noise of an engine, and is beneficial to improving the driving feeling of people.

The invention discloses synthetic ester type fire resistant hydraulic oil. The synthetic ester type fire resistant hydraulic oil is prepared from the following components in percentage by weight: 96 to 98 percent of trimethylolpropane oleate, 0.1 to 0.7 percent of alkyl diphenol, 0.2 to 1.4 percent of sulfurized di-tert-butyl phenol, 0.05 to 0.3 percent of methylbenzotriazole, 0.2 to 1.4 percent of octylbutyldiphenylamine, 0.1 to 0.4 percent of phosphate, 0.001 to 0.05 percent of an ethylene glycol/propylene glycol copolymer, 0.25 to 1 percent of alkyl phosphate ammonium salt and 0.001 to 0.01percent of an antifoaming agent. Compared with existing fire resistant hydraulic oil, the synthetic ester type fire resistant hydraulic oil disclosed by the invention has a smaller wear spot diameter(less than or equal to 2.5 mm) and a higher FZG failure level (12 levels), and the oxidation life based on a rotary oxygen bomb method is longer than 400 min; and the synthetic ester type fire resistant hydraulic oil is very suitable for being applied to hydraulic systems in various high temperature, high pressure and severely cold working environments.

The invention relates to a lubricating oil compound nanometer antiwear agent preparation method, belonging to the technical field of lubricating oil additive preparation. The preparation method comprises the following steps: first, by taking fresh pork livers as raw materials, extracting the same to obtain a pork liver extract; mixing an ammonium paramolybdate solution and a thiourea solution, dropwise adding hydrochloric acid to adjust the pH (Potential Of Hydrogen), heating, standing, filtering and drying to obtain nanometer particles; mixing and dispersing the nanometer particles with a tris(hydroxymethyl)methyl aminomethane solution and absolute ethyl alcohol to obtain uniform suspension liquid; finally, attaching to the surfaces of the nanometer particles by using dopamine and adsorbing the pork liver extract to the surface layer of the shell of the dopamine to obtain a double-layer shell, then filtering and drying to obtain the lubricating oil compound nanometer antiwear agent. The lubricating oil compound nanometer antiwear agent prepared according to the method cannot release corrosive matters during using, and cannot corrode metal, so that the service life of a used part is prolonged; the lubricating oil compound nanometer antiwear agent has excellent antiwear performance, and the wear spot diameter is less than 0.40mm.

The invention discloses a water-based hydraulic fluid anti-wear additive, namely carboxylic acid amine salt modified polyethylene oxide. The carboxylic acid amine salt modified polyethylene oxide is prepared through the following steps: uniformly mixing carboxylic acid modified polyethylene oxide and fatty amine according to a certain ratio, carrying out stirring, carrying out a reaction at a normal temperature for 50-70 minutes, carrying out heating to 35-45 DEG C, and carrying out stirring for 50-70 minutes so as to obtain the carboxylic acid amine salt modified polyethylene oxide. The carboxylamine salt modified polyethylene oxide provided by the invention is used as the water-based hydraulic fluid anti-wear agent; a certain concentration of the anti-wear agent provided by the inventionis added into a water-ethylene glycol flame-retardant liquid base solution; in a four-ball experiment, the wear spot diameter is reduced by 60.0% at most; the maximum non-seizure load can be increased by 77.5% at most; the total wear weight loss in a vane pump friction experiment is only about 50 mg; and excellent wear resistance is achieved. The anti-wear agent provided by the invention enablesthe anti-wear performance of a hydraulic medium to be greatly improved, prolongs the service life of a hydraulic element and improves the working stability of a whole hydraulic system.