31results about How to "Play an anti-wear role" patented technology

Organic antifriction composition for drilling fluid is composed of, prepared in 100%, 45-65 parts of organic acidic metal salt, 15-35 parts of mineral oil, 5-10 parts of emulgator, and 8-15 parts of extreme-pressure additive. During preparation, the components are proportionally added into a reactor and react for 4-6 hours at 50-90oC, producing yellow or brown liquid which is antifriction composition. The antifriction composition can form a high-intensity extreme-pressure lubricating film to be antifriction through its organic negative ions adsorbing to the surface of a casing or a drilling rod, and can replace or partially replace lubricant, using cost of lubricant is reduced, and the antifriction composition is applicable to highly-deviated wells, horizontal wells, high-density drilling fluid and long-cycle prospecting wells.

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 discloses a highly compression-resistant double-layer copper-alloy contact wire and a preparation method thereof. The copper-alloy contact wire has the tensile strength of above 450MPa, the tensile failure force of above 48KN, and the conductivity of above 75% IACS, the two sides of the copper-alloy contact wire are provided with gaps, the copper-alloy contact wire comprises an outer tin coating layer and an inner copper alloy body, copper alloy body cross sections above or below the gaps are fan-shaped, a plurality of telescoping mouths are arranged on the tin coating layer, and copper alloy is prepared by processes of powder making, pre-compaction, billet ingot making and the like. The copper alloy contact wire has a unique structure, high conductivity can be guaranteed, at the same time, components can play effects of reducing wear and resisting abrasion, and during the use of the copper alloy contact wire, temperature difference and electric spark burn can be effectively prevented.

The invention discloses a cardan joint capable of compensating abrasion of a sealing device. The cardan joint capable of compensating the abrasion of the sealing device can automatically conduct compensation after a lip of an oil seal ring is abraded, is good in sealing performance and is provided with a dust guard which is good in waterproof effect and sand-proof effect. The cardan joint comprises a shaft neck, a bearing, a roller pin, the oil seal ring and the dust guard. The bearing is installed on the shaft head of the shaft neck, the roller pin is installed in the bearing, the oil seal ring is installed at the outer end of the roller pin in the bearing, an outer bending ring (16) of the dust guard is connected with the bearing, an inner bending ring (22) of the dust guard is connected with the shaft head, the section of the oil seal ring is in a U shape, a lip of an outwards-protruded arc-shaped edge (5) is arranged on the outer side wall of a semiarc (1) in the oil seal ring, a balance skeleton (37) is embedded in an oil seal ring soft body (10) of the tail end of the semiarc (1) in the oil seal ring, a spring ring (2) is clamped on the inner side wall of the semiarc in the oil seal ring, and an elastic ball (33) is clamped in a U-shaped groove (38) in the oil seal ring. The cardan joint is mainly used in the manufacturing technology.

The invention discloses porous lightweight concrete, and also discloses a preparation method thereof, and the porous lightweight concrete comprises 280-300 parts by weight of cement, 200-250 parts byweight of concrete slag, 40-45 parts by weight of sand, 900-1200 parts by weight of gravel, 30-40 parts by weight of fly ash, 80-100 parts by weight of water, 2-5 parts by weight of polypropylene fiber, 30-80 parts by weight of fine sand, 4-5.5 parts by weight of a binder, 2-5 parts by weight of a water reducer, 15-22 parts by weight of ferric sulfate, 500 to 800 parts by weight of a reinforcing agent, 3 to 5 parts by weight of carbonate, 300 to 400 parts by weight of steel slag, 8 to 10 parts by weight of diatomite, 150 tO250 parts by weight of a lotus leaf hydrophobing agent, 100 to 150 parts by weight of activated carbon and 320 to 340 parts by weight of toughening fiber. According to the method, the steel slag and the concrete slag are added in the preparation process of the concrete,and wastes such as the steel slag, the concrete slag and the like improve the compressive strength of the concrete, improve the mechanical properties such as shear resistance and the like, reduce thecost, and implement the national technical and economic policies of saving resources and green production.

The invention discloses a spiral diamond drill bit. The drill bit includes a spiral rod, an extending block and a supporting block. A transition joint is installed at the upper end of the spiral rod,and stabilizing pieces are arranged at the upper end of the transition joint; a bracing piece is arranged at the upper ends of the stabilizing pieces, spiral connectors are fixed to the border of theupper end of the bracing piece, flank bases are fixed to the upper ends of the spiral connectors, and toothed addenda are fixed to the upper ends of the flank bases; the extending block is fixed to the portion among the flank bases, auxiliary pieces are fixed to the upper end of the extending block, a groove is formed in each stabilizing piece, a convex piece is fixed to one side of each groove, and the supporting block is arranged on the border of the interior of the bracing piece. According to the spiral diamond drill bit, toothed addenda are arranged on the surfaces of both the flank basesand the auxiliary pieces and can directly achieve an anti-wearing effect; through cooperation between the stabilizing pieces and the bracing piece, the impact toughness is enhanced; since the spiral connectors are fixed to the interior, the drill bit can have high impact toughness, great anti-wearing performance and high rock breaking speed, and the drilling efficiency is improved.

The invention relates to the technical field of preparation of lubricating agents, and in particular relates to a preparation method of modified expanded graphite plant-based lubricating grease. According to the preparation method provided by the invention, mixed plant oil is used as lubricating basic oil, modified expanded graphite and pork liver are used as modifying agents, ethylene glycol, melamine and the like are added to prepare the modified expanded graphite plant-based lubricating grease; firstly, the plant oil is extracted from soybeans and peanuts, and fatty acid in the plant oil forms a fatty soap adsorption film on the surface of metal; the adsorption film has a wear-resisting effect; graphite powder is modified by utilizing a concentrated sulfuric acid solution, and is blended with acetic anhydride and potassium permanganate to obtain expanded graphite; then the pork livers and the melamine are continually added, and one layer of chemical protection film is formed on thesurface coated with the lubricating grease by utilizing elements including nitrogen, phosphorus, sulfur and the like in the pork livers and the melamine, so that a protection effect on the lubricatinggrease is realized; biological oil is used for replacing mineral oil, so that damages to human bodies and environment are not caused; the protection of resources is facilitated, and the lubricating grease has a wide application prospect.

The invention discloses a gearbox oil additive for a gearbox of a fuel vehicle, which is characterized in that the gearbox oil additive comprises gearbox oil, water-based nano gold and water-based nano platinum. The invention further discloses a preparation method of the gearbox oil additive. By adding the gearbox oil additive into the gearbox of the fuel vehicle and fusing the gearbox oil additive with the gearbox oil in the gearbox, the stability of the gearbox oil can be kept, and the anti-attenuation performance of the gearbox oil can be improved, so that the gearbox is better protected, and the service life of the gearbox is prolonged. Meanwhile, friction is generated under stirring of the gearbox, so that a large amount of far infrared rays are generated, the far infrared rays are guided into the engine in a penetrating mode through the contact parts of the main shaft, the gearbox shell and the engine shell, the engine is indirectly affected, and the combustion efficiency of the engine is improved.

The invention discloses an oil and water well extraction and injection tubular column internally and externally wrapped with hot melting plastic layers and a manufacturing method of the tubular column. The inner wall and the outer wall of each extraction and injection steel pipe are wrapped with the hot melting plastic layers, and the extraction and injection steel pipes are in screw connection with each other through pipe couplings. As for a pipe opening gasket between pipe openings of every two extraction and injection steel pipes, an inner ring is in a slab shape, the outer ring is in a trapezoid with the larger outside and the smaller inside, and the trapezoidal outer ring of the pipe opening gasket is firmly embedded into a trapezoidal groove of the corresponding pipe coupling. The inner wall and the outer wall of the overall tubular column are both wrapped with plastic, no gas and no steel exposed point exist between the inner walls of the extraction and injection steel pipes and the hot melting plastic layers, and the condition that liquid and gas make contact with steel is obstructed. Owing to the fact that inner layer plastic and the outer layer plastic cannot fall off, the effect that the tubular column inner walls of full oil extraction wells and injection wells are completely resistant to corrosion is achieved, and the wear-resistant effect of the tubular column pipe walls is achieved, so that the service life of the overall extraction and injection tubular column is prolonged by 3-5 times, and the repairing-free periods of the oil and water wells are prolonged by 2-3 times. According to the extraction and injection tubular column, steel is saved, the oil exploiting cost is reduced, the failure rate of the oil wells is decreased, and working efficiency is improved.

The invention relates to a water-based cutting fluid and a preparation method thereof, and belongs to the technical field of cutting fluid preparation. The water-based cutting fluid disclosed by the invention does not contain grease substances, so that the prepared cutting fluid is colorless and transparent, and the surface of the cutting fluid does not contain any greasy dirt. And after the part is machined, only aluminum skimmings generated in the machining process need to be washed in clear water. The cutting fluid can perfectly replace traditional cutting fluid, and an ultrasonic cleaning link can be omitted. And the cutting fluid is excellent in rust resistance, good in cutting effect and wide in application prospect.

The invention discloses a chain transfer agent for preparing an antibacterial polymer and a preparation method of the chain transfer agent. The chain transfer agent for preparing the antibacterial polymer has a structure as described in the specification. In the formula, R is as defined in the specification. The preparation method for the chain transfer agent used for preparing the antibacterial polymer has the advantages that operation is simple, no toxic by-product is generated, and the price of synthesis raw materials is low; the polymer prepared from the chain transfer agent has a good bactericidal effect; and the chain transfer agent can be used as a lubricating oil additive and has good anti-wear and anti-friction effects.