65results about How to "Stable wear resistance" patented technology

The invention relates to a laser bionic coupling guide rail and a regeneration method thereof. Bionic surfaces different in abrasion resistance are machined in a slight abrasion area and a serious abrasion area on the working face of the guide rail. A point and strip bionic surface combining form or a strip and net bionic surface combining form or a point and net bionic surface combining form is adopted according to the hardness gradient or the stress gradient of the serious abrasion area and the slight abrasion area of the working face of the guide rail. A bionic surface with the overall abrasion resistance being consistent for a long term is formed through the combination of the bionic surfaces different in abrasion resistance, the mechanical performance of the surface with the uneven mechanical performance distribution can be recovered to be evenly distributed, the phenomenon of serious local abrasion caused by large local stress is effectively avoided, and the bionic coupling guide rail is more suitable for the angle of the actual work of the bionic coupling guide rail. A multi-bionic coupling surface combined uneven regeneration repairing manner is directly implemented on the local abrasion surface of a cast iron guide rail on which high-frequency quenching is carried out, and the problem that due to the uneven abrasion of the surface of the scraped guide rail, the scraped guide rail is hard to regenerate is basically solved.

The invention discloses a high-temperature resistant and abrasion-resistant white cast iron piece and a production method to solve the problem in hardness of white cast iron. The high-temperature resistant abrasion-resistant white cast iron piece is characterized in that the white iron casting comprises the following chemical compositions by mass percent: 3.0 to 3.5 percent of C, 30 to 36 percent of Cr, 1.8 to 2.5 percent of Mo, smaller than or equal to 1 percent of Si, 1.0 to 2.0 percent of Ni, 1.05 to 1.5 percent of Mn, 0.5 to 1.0 percent of B, smaller than or equal to 0.10 percent of P, smaller than or equal to 0.08 percent of S, and Fe in balancing amount; and the chromium carbon ratio of the white cast iron is 8.5 to 12. The method comprises the steps of smelting, casting, thermal insulation and cooling. The white cast iron piece has the advantages that casting-state thermal insulation slow cooling hardness HRC is larger than or equal to 61, the hardness HRC after quench tempering is larger than or equal to 66, the hardness HRC can still keep larger than or equal to 61 at 700 DEG C, the corrosion resistance of the white cast iron piece is superior to that of the existing white cast iron piece, and the white cast iron piece is particularly suitable to serve as a wear-resistant part operating under high-temperature condition.

The invention discloses a high-ratio methanol fuel composite additive for vehicles. The composite additive is prepared from the following raw materials in percentage by mass: 50-70% of aliphatic ester, 10-30% of nitrate, 5-10% of glycerol, 5-10% of benzotriazole and 5-10% of high carbon alcohol. According to the high-ratio methanol fuel composite additive, the aliphatic ester of which the carbon chain number is about 18 is adopted, and the lubricating property, corrosion resistance and wear resistance of the methanol fuel for vehicles can be greatly improved. The nitrate is an excellent ignition improver and combustion improver, and the glycerol, benzotriazole and high carbon alcohol are excellent corrosion inhibition components and cosolvents. According to the methanol fuel composite additive for vehicles prepared by mixing the substances, the performance of the fuel is greatly improved.

The invention discloses a machining process of a TP (topaz) bead ring for spinning. The machining process is characterized by comprising the steps of: 1, selecting materials: selecting an excellent-quality alloy steel wire containing elements of W, V, Ni and Co as a raw material; 2, flaking; 3, annealing; 4, forming; 5, quenching-tempering; 6, polishing; and 7, carrying out surface treatment: nickelling the surface of a bead ring matrix by adopting a chemical plating method, and adding a nano powder body in a plating solution to ensure that the nano powder body is co-deposited on the bead ring matrix; and 8, carrying out surface curing treatment: removing the stress and enhancing the hardness to ensure the surface of the bead ring is golden yellow. The TP bead ring machined by adopting the machining process has relatively good abrasion resistance, friction reduction and corrosion prevention properties, is capable of well meeting the requirement on the existing high-count, high-speed and high-efficiency spinning, is particularly suitable for compact spinning and common high-speed ring spinning, and has a good development prospect and a wide market popularization space.

The invention relates to the field of organic silicon high-polymer materials, in particular to long-life silicon rubber for peristaltic pump pipes and a preparation method of the long-life silicon rubber. The silicon rubber is prepared from raw materials in parts by mass as follows: 50-150 parts of methyl vinyl polysiloxane, 40-60 parts of reinforcing filler, 1-12 parts of a structurized control agent, 0.1-1.0 part of a hydrosilylation catalyst, 0.5-2 parts of a cross-linking agent, 0.05-0.2 parts of an inhibitor and 0.1-0.6 parts of a release agent, wherein the methyl vinyl polysiloxane is a mixture formed by mixing vinyl-terminated methyl vinyl polysiloxane with all side chains being methyl groups and methyl-terminated methyl vinyl polysiloxane with side chains containing vinyl groups in any mass ratio. The silicon rubber for the peristaltic pump pipes has excellent weather resistance, temperature resistance and biocompatibility of silicon rubber, and the molded silicon rubber pipes have very long service life and are good in wear resistance and pressure bearing capability.

The invention belongs to a method for carrying out reinforcing and sealing-protection on wood by using nano cellulose. The method comprises the following steps: classifying the wood according to waterpermeability of the wood, and performing brushing or immersion treatment on the wood according to classification with a nano-cellulose sealing-protection liquid prepared by a carboxymethyl celluloseor hydroxypropyl cellulose or hydroxyethyl cellulose polymer solution with a concentration of 0.5-2.5%, a cellulose nano crystal with a concentration of 0.5-1.5%, a nano cellulose dispersion liquid ofTEMPO oxidized nano fibers with a concentration of 0.2-0.7%, and a modification liquid of a silica sol with a concentration of 0.5-1.5%. The method can improve dimensional stability, density, flexural modulus and compressive strength of the wood, and has the advantages of significantly improving quality and added values of the wood.

The invention discloses a highway construction and maintenance method based on a cement-based composite material. The method comprises the following steps: 1) modifying polyvinyl alcohol fibers; 2) material preparation: firstly, carrying out dry mixing on cement, fly ash and sand for 1-6 minutes; adding water and a water reducing agent, then adding a nano graphene sheet or graphene oxide dispersion liquid, stirring at a low speed for 5-10 minutes, adding modified polyvinyl alcohol fibers while stirring after uniformly flowing cement mortar is obtained, and stirring at a high speed for 5-10 minutes after all the modified polyvinyl alcohol fibers are added; carrying out a flow table fluidity experiment on the slurry in the stirring process until the fluidity of the slurry reaches 200 mm or above and the fibers are uniformly dispersed; 3) precasting cement-based composite material components; and 4) carrying out paving; according to the invention, the construction performance is good, theconstruction cost is low, and construction is convenient.

The invention discloses a modified hardfacing self-shielded flux-cored wire doped with multi-boride and a preparation method of the modified hardfacing self-shielded flex-cored wire doped with the multi-boride. The modified hardfacing self-shielded flux-cored wire doped with the multi-boride comprises a low-carbon steel strip and a flux core, wherein the flux core comprises, by mass percentage, 45-55 wt% of high carbon ferro-chrome, 6-16 wt% of B4C, 3-9 wt% of TiB2, 3-9 wt% of ZrB2, 1-3 wt% of graphite, 0.5-1 wt% of cellulose powder with the mesh being 60, 0.5-1 wt% of cellulose powder with the mesh being 200, 1-3 wt% of an aluminum-magnesium alloy with the mesh being 60, 0.5-2 wt% of an aluminum-magnesium alloy with the mesh being 200, 2-7 wt% of an silicon-manganese alloy with the mesh being 60, 1-4 wt% of an silicon-manganese alloy with the mesh being 200 and the balance iron powder, and the flux core accounts for 50-54 wt% of the total mass of the flux-cored wire. According to the flux-cored wire, through addition of the flux core components of different grain sizes, the good welding process performance is guaranteed; through the addition of the multi-boride component, the multi-boride is dispersed and extracted in the welding process; and the flux-cored wire has the beneficial effects of being high and uniform in hardness, good in wear resistance and the like, and few residues are left on the surface of a weld bead, and slag removal is not needed in multi-layer welding.

The invention discloses a polyvinyl alcohol size boiling technology and a textile fiber sizing technology. The polyvinyl alcohol size boiling technology includes the steps that water is heated to 88 DEG C to 92 DEG C, solid polyvinyl alcohol is added into the water at the charging speed of 11.11g/s and is stirred, a polyvinyl alcohol sizing agent is formed after the solid polyvinyl alcohol is completely dissolved. The sizing agent formed through the polyvinyl alcohol size boiling technology does not contain tiny particles, and after textile fibers are covered the sizing agent, particles hindering spinning can not form on the textile fibers, so that abrasion resistance of the textile fibers keeps stable, quality of textile products is improved, and production efficiency of weaving is improved.

The invention discloses a temperature-change-resistant conveying belt and a preparation method thereof, and relates to the technical field of conveying belts. The problem that the wear resistance of the conveying belt is greatly reduced when the conveying belt is influenced by large temperature change of an external environment due to poor temperature change resistance of the conveying belt is solved. The temperature-change-resistant conveying belt comprises the following components in parts by weight: 60-70 parts of polyurethane rubber; 20-25 parts of butadiene-acrylonitrile rubber; 3 to 5 parts of carbon nanotubes; 5 to 15 parts of dioctyl phthalate; 10-18 parts of a wear-resistant filler; 2-4 parts of a stabilizer; 3-5 parts of a flame retardant; 8 to 12 parts of polyborosiloxane; 3 to8 parts of dicumyl peroxide; 9-15 parts of a PU adhesive; and 20-30 parts of a skeleton fabric. When the temperature-change-resistant conveying belt is affected by large temperature change of the external environment, the abrasion resistance of the temperature-change-resistant conveying belt is not greatly reduced, good structural stability can still be kept, and the whole temperature-change-resistant conveying belt has good temperature change resistance.

The invention relates to a turbofan flow sensor and belongs to the technical field of flow measuring devices. The turbofan flow sensor comprises a casing (1), a Hall-effect switch (2), a turbofan rack (3), a steel ball (4), a turbofan (5), a shaft lever (6) and a bearing (7). According to the invention, the flow sensor which is designed by adopting the turbofan is determined to have a relatively stable friction coefficient and abrasive resistance at different angles within a range of 360 degrees due to the design of the structure and the parameters, and the flow measuring repeatability and consistency are ensured.

The invention discloses a processing technique of a BS (blue sapphire) traveller used for spinning. The technological process comprises the following steps: (1), selecting material, taking high quality alloy-steel wires containing chemical elements such as W, V, Ni and Co as raw material; (2), tabletting; (3), annealing; (4), forming; (5), quenching and tempering; (6), polishing; (7), surface diffusion treating, melting the chemical compound with transition elements to diffuse and permeate the chemical compound into the base body of the traveller, allowing the surface of the traveller to be blue; and (8), surface curing and treating. The traveller produced by adopting the processing technique has the characters of good wear resistance, anti-friction quality, corrosion resistance and long service life and the like, can obviously reduce the phenomenon of airiness, flying rings and broken ends, can better satisfy the current spinning development requirement of 'high count, high speed and high efficiency', is particularly suitable for compact spinning and common high-speed ring spinning, and also can meet the requirements of novel materials, such as novel fiber, special fiber, carbon fiber, cotton-like fiber and mixed fiber.

An alloy powder for spray welding to improve the antiwear strength of metal member surface is prepared from Cr (18-30 wt. portions), Ni (4-9), Mn (2-6), Si (2-6), B (2-5), and C (2-4.5 through mixing.

The invention relates to a tool and mold steel mold casting powder is composed of, by mass percentage, 1.8%-2.2% of sodium carbonate, 1.7%-2.3% of fluorite, 10.5%-17.5% of perlite, 8.3%-12.7% of kieselguhr, 18.5%-21.5% of power plant ash, 28.0%-32.5% of clinker, 4.5%-5.5% of high aluminum powder, 13.5%-16.5% of feldspar powder, 1.8%-2.2% of expanded graphite, and the sum of all the ingredients is 100%. The mold casting powder is high in occluded foreign substance absorption capacity, the occluded foreign substrate formed due to oxidation can be prevented from gathering in the surface of a casting blank, and the problems of longitudinal cracks and pits on the surface of the tool and mold steel are solved; and part of the perlite is replaced with the kieselguhr, so that the mold casting powder is better in spreadability and smaller in surface tension and capable of evenly covering the surface of molten steel and playing the function of preventing secondary oxidation of the molten steel.

The invention relates to a particle reinforced aluminum matrix composite for an automobile piston and a preparation method of the particle reinforced aluminum matrix composite. The aluminum matrix composite is prepared from 8-10wt% of Fe, 0.8-1.5wt% of V, 1.4-2.2wt% of Si, the balance 75-91% by volume of aluminum alloy matrix powder of Al, preferentially, 78-89% by volume, 8-25% by volume of silicon carbide, preferentially, 10-20% by volume and 0.5-4% by volume of graphite powder, preferentially, 1-2% by volume. The preparation method of the particle reinforced aluminum matrix composite comprises the steps that aluminum alloy matrix powder, silicon carbide and graphite powder are mixed to be uniform and compacted, a mixture is made to be an extrusion ingot blank, the extrusion ingot blankis heated to 450-520 DEG C, kept at the temperature, extruded according to the extrusion ratio being 8 or more, forged again and optionally machined. The particle reinforced aluminum matrix compositehas the advantages that the process is simple, the content of silicon carbide and graphite is easy to control, a matrix and a reinforcement phase have no interface reaction, and indoor-temperature high-temperature mechanical properties are excellent. The particle reinforcement aluminum matrix composite can be widely applied to manufacturing automobile positions, brake materials and other high-temperature wear resistance parts.

The invention discloses an aluminum-magnesium alloy material of a stamping part. The aluminum-magnesium alloy material is composed of, by mass, 0-20% of magnesium, 0-0.8% of gold, 0-0.8% of titanium, 0-15% of iron, 0-0.15% of platinum, 0-5% of copper and the balance aluminum. The aluminum-magnesium alloy material has the beneficial effects that the aluminum, magnesium and iron serve as main raw materials, the abrasion resistance of the stamping part is stabilized, meanwhile, the aluminum-magnesium alloy material is composed of the other metal elements, the erosion resistance of parts is improved, the service life is prolonged, the safety is good, and the stability is high.

A spray material for slide bearing is a self-fused hard alloy powder for the hot galvanizing machine set, and contains Cr (20-26 wt.%), Co (22.8-61), Mo (10-16), W (6-12), Si (1-4), B (2-5), F (less than 14) and C (less than 0.2). Its spayed layer has high anticorrosion and antiwear performance to elongate the service life of slide bearing up to 21-27 days with low cost.

The invention is suitable for the technical field of lubricating oil, and provides lubricating oil and a preparation method thereof. The lubricating oil is prepared from the following raw materials in percentage by weight: 18-25% of polyol ester, 8-10% of alkyl naphthalene, 26.3-40.75% of an additive, and the balance of poly alpha olefin. The lubricating oil disclosed by the invention is more stable in wear resistance, and the wear resistance of the lubricating oil disclosed by the invention exceeds 15% of the ACEA E6 standard requirement; the lubricating oil provided by the invention can better reduce the formation of sediments, and can provide excellent engine cleaning performance which exceeds 36% of the API CI-4 standard requirement; the viscosity stability is high, and the viscosity stability performance exceeds 8 times of the APICI-4 standard requirement; the raw materials of the lubricating oil do not contain corrosive substances, the lubricating oil does not harm the environment or damage mechanical equipment, and the lubricating oil is non-flammable and wide in application range.

The invention discloses a lubricating grease compound additive and a lubricating grease composition prepared from the lubricating grease compound additive. The lubricating grease compound additive comprises an organic alkali intercalation zirconium phosphate compound and an extreme pressure agent, the organic base intercalation zirconium phosphate compound comprises one or two of organic amine intercalation zirconium phosphate, single-long-chain organic ammonium intercalation zirconium phosphate or double-long-chain organic ammonium intercalation zirconium phosphate. The lubricating grease composition comprises the following components in parts by weight: 90.0 to 98.0 parts of base grease, 1.0 to 7.0 parts of an organic alkali intercalation zirconium phosphate compound, 0 to 3.0 parts of an extreme pressure agent and 0.5 to 1.0 part of an antirust agent, and 0.5 to 2.0 parts of an antioxidant. The additive composition disclosed by the invention combines the advantages of a solid additive and an organic extreme pressure agent, and dual protection of a submicron-sized intercalated zirconium phosphate physical protective film and a nano-sized extreme pressure agent chemical protective film exists on the surface of a friction pair at the same time, so that the extreme pressure property of the lubricating grease is improved, the stable wear resistance is ensured, and the service life of the lubricating grease is prolonged. And the service life of the equipment is effectively prolonged.

The new-type of ceramic triple change valve can resist scour and wear of medium on the cock, valve body and valve channel and the self-wear of the sealing plane and the sealing pair, and has long service life. The present invention features the sealing ceramic rings in proper positions of cock and valve seat; ceramic lining pipe in the channel, inlet and outlet; the eccentric structure of the cock and the valve body and the connection between central shaft of regulating rotation mechanism and the cock via the valve body axis. The present invention may be used in control and conveyance of medium with particles.