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

The invention discloses a manufacturing method of a vermicular cast iron piston ring. The material of the vermicular cast iron piston ring comprises the following chemical components in percentage by weight: 3.4-4.0% of C, 2.4-3.2% of Si, not more than 0.3% of Mn, 0.2-0.4% of Cr, 0.2-0.6% of Mo, 0.5-1.0% of Cu, 0.05-0.15% of Ti, not more than 0.1% of P, not more than 0.05% of S, 0.009-0.02% of Mg and the balance of Fe and inevitable impurities. The manufacturing method of the vermicular cast iron piston ring comprises the following technical steps of moulding, smelting, casting, shaking out, shot blasting, mechanical processing, surface treatment and the like. By adopting the manufacturing method disclosed by the invention, the thinning of the piston ring is achieved, the production process is relatively simple, and the manufactured vermicular cast iron piston ring is high in elasticity, strength, toughness and wear resistance.

The invention relates to an ultrasound dynamo thermosetting resin radical friction material and friction layer making method and the assistant tools. The material is made up of 35-80% thermosetting resin, 0-34% curing agent, 5-15% nanometer antifriction powder, 5-15% carbon fiber, 0-10% copper oxide, 0-5% polytetrafluoroethylene, 5-10% copper powder, 2-10% graphite, 0-5% nitrile butadiene rubber, and 0-10% mineral substance. The invention has excellent wear resistance, suitable rigidity, good output characteristic, etc. And the method is low cost and simple. The assistant tool is made up of moving bar and base.

The invention discloses a high-wearability insulating cable material and a preparation method thereof. The high-wearability insulating cable material is prepared from the following raw materials in parts by weight: 70 to 90 parts of polyurethane rubber, 15 to 20 parts of polytetrafluoroethylene, 10 to 15 parts of nylon 6, 10 to 15 parts of polypropylene glycol adipate, 5 to 10 parts of dipropylene glycol dibenzoate, 5 to 10 parts of trel-butylphenyl diphenyl phosphate, 7 to 13 parts of antimonous oxide, 5 to 10 parts of decabromodiphenylethane, 4 to 8 parts of zinc borate, 2 to 3 parts of tert-butyl peroxybenzoate, 1.5 to 2 parts of zinc oxide, 2 to 3 parts of stearic acid, 3 to 6 parts of chlorcosane, 1 to 2 parts of accelerant ZDMC (Zinc Dimethyldithiocarbamate), 1 to 2 parts of accelerant CZ (N-cyclohexylbenzothiazole-2-sulphenamide), 15 to 20 parts of fumed silica, 10 to 15 parts of attapulgite nanoocomposites, 5 to 10 parts of nano zeolite, 10 to 15 parts of precipitated barium sulphate, 1.5 to 2.5 parts of antioxidant 1010, 2 to 3 parts of anti-aging agent TPPD (N-(p-toluene-sulphonylamido-N'-phenylene diamine)), and 3 to 6 parts of composite filler. The cable material is outstanding in wearability, particularly, the wearability is always several times and even dozen times that of the common electrical material under a terrible working condition in the presence of water, oil and other wetting medias; the cable material is also remarkable in heat resistance, flame resistance, ageing resistance, oil resistance, warping strength, impact resistance and tear resistance.

The invention relates to chemical plating on the surface of a metal material, in particular to a low-temperature ultrasonic wave assisted chemical Ni-Cu-P plating solution used for the surface of a low-carbon steel base material as well as a chemical Ni-Cu-P plating method. The characteristics include adopting nickel sulfate and copper sulfate as the main salt of the plating solution, sodium hypophosphite as a reducing agent, sodium acetate as a buffer, trisodium citrate and lactic acid as complexing agents, succinic acid and glycine as well as ammonium hydrogen fluoride as combined accelerators, potassium iodide and thiourea as stabilizers to prepare the chemical Ni-Cu-P plating solution, and applying the chemical Ni-Cu-P plating solution on the surface of a low-carbon steel substrate by low-temperature ultrasonic wave chemical plating. In the invention, the formula of the plating solution is environment-friendly, meets the environment-friendly requirement of clean production and reduces pollution to environment. The method for chemically plating Ni-Cu-P on the surface of the low-carbon steel substrate obviously lowers the plating application temperature, enables the deposition speed to be fast and effectively improves the performance of the low-carbon steel substrate.

The invention discloses a surface layer polyurethane resin for waterproof and moisture permeable synthetic leather and a preparation method of the polyurethane resin. The surface layer polyurethane resin for the waterproof and moisture permeable synthetic leather is made from raw materials comprising polyol, chain extenders, a tri-functionality compound, diisocyanate and a sealing agent. The polyol contains polyol A and polyol B in a molar ratio of 1:1-1:3, wherein polyol A is selected from one or more of polytetramethylene ether glycol and polytetrahydrofuran propylene epoxide polyether diols, and the polyol B is selected from one or more of polytetrahydrofuran epoxyethane polyether diols, propylene epoxide epoxyethane polyether diols and polyepoxide glycol; the chain extenders comprise a dihydroxyl chain extender and a diamino chain extender; the tri-functionality compound is a trihydroxy compound; and the blocking agent is a monoamine silane coupling agent. The waterproof and moisture permeable polyurethane synthetic leather disclosed by the invention not only has excellent waterproof property and moisture permeability, but also has excellent wear resistance.

A surface-coated cermet cutting tool with a hard coating layer in a high-speed intermittent cutting work is provided. The hard-coating layer includes lower and upper layers. One of the lower layers is a titanium carbonitride layer, which has the highest peak in Σ3 and a distribution ratio of the Σ3 to ΣN+1 ranges 60% to 80% in the atom sharing lattice point distribution graph.

The invention relates to the technical field of optical films and in particular relates to a preparation method and an application of a protective film in full lamination with a mobile terminal. The preparation method of the protective film comprises the following steps: putting a polyester film substrate and a first release film into a film coating and laminating wheel, carrying out hot-press lamination, wherein a curve equation of lamination temperature and time is shown as follows: T=429X2-83X+(261-271)s; coating the other surface of the polyester film substrate with an adhesive material, coating the adhesive material with a second release film, putting the film substrate in a drying oven, and drying to obtain the protective film. The protective film prepared by the method is high in tension and is capable of laminating the picture surface, the back surface and side surface of the mobile terminal at 360 degrees; the protective film is integrally molded, and is low in production cost and high in impact resistance; the mobile terminal is low in sable thickness; the preparation method is simple and can be used for effectively solving the problem that the protective film is not liable to coil because the material is softened during processing at a high temperature.

The invention discloses a filtering device comprising piezoelectric composite material and application thereof in atmosphere particle absorption. A filtering layer in the filtering device does not need an external power supply, charges are generated only by deformation under a simulation effect of external pressure, thus, the filtering device can be repeatedly charged, the charges can be stably stored, and the service lifetime is prolonged. The filtering device can be used for absorbing the atmosphere particle, polarity fine particle in atmosphere can be directly captured, and neutral particlealso can be polarized and then is captured; and the method has no selectivity on a size of particle and particularly has relatively high absorption efficiency on micronano-scale fine particle.

The invention discloses a liquid crystal polymer/cubic boron nitride master batch prepared from a liquid crystal polymer, cubic boron nitride and dimethyl silicon oil, and a preparation method thereof. The liquid crystal polymer/cubic boron nitride master batch disclosed by the invention is mainly used as a wear-resistant and scratch-resistant master batch in a high-temperature-resistant polymer, and capable of obviously improving the wear resistance and scratch resistance of the high-temperature-resistant polymer. By using a cross scratch resistance instrument and a colorimeter for detecting the scratch resistance, the minimum Delta L value is 0.21, which fully shows that the liquid crystal polymer/cubic boron nitride master batch disclosed by the invention is greatly excellent in the wear resistance and the scratch resistance of the high-temperature-resistant polymer.

A manufacturing method for a composite steel part including preparing an intermediate product in which an extra portion, which has a thickness equal to or more than that of a carburized layer to be formed in a subsequent carburizing step, has been added to a welding expected portion, carburizing the intermediate product by heating to an austenitizing temperature or more in a carburizing atmosphere, then cooling the intermediate product at a cooling rate less than a rate at which martensitic transformation occurs and without completing structural transformation due to the cooling, quenching a portion of the intermediate product after heating to an austenitizing range by high-density energy and thereafter cooling to cause martensitic transformation to form a carburized quenched portion, removing an extra portion of the intermediate product; and then welding a second steel part to the welding expected portion.

A surface of aluminum alloy or iron alloy coated, on at least a part, with a lead-free copper-based coating layer comprising, by weight, 0.2–15% bismuth, and at least one metal selected from the group consisting of 5–40% nickel, 1–20% chromium, 1–20% iron, and 1–10% cobalt, the balance being copper which is more than 55%. The surface may be of a swashplate used in swashplate type compressors.

The invention relates to a polymer alloy, which mainly comprises the following components in percentage by weight: 60 to 97 percent of polytetrafluoroethylene, 3 to 40 percent of main chain polyester liquid crystal polymer and the balance of auxiliary material. The auxiliary material is one or two of carbon fiber and glass fiber, wherein the carbon fiber is 0 to 15 weight percent of the auxiliary material; the glass fiber is 0 to 15 weight percent of the auxiliary material; and the auxiliary material comprises 0 to 5 weight percent of graphite. The wear-resistant polytetrafluoroethylene alloy has the advantages of high wear resistance, high hardness, low creep property, low friction coefficient and abrasion coefficient and the like.

The invention discloses thermal underwear fabric. A preparation technology of the thermal underwear fabric is implemented through the step as follows: blended yarn prepared from Cuqing fibers, other common cellulose fibers, synthetic fibers and wool fibers is subjected to weaving and after-finishing processes. The thermal underwear fabric has the advantages as follows: the density of the Cuqing fibers is 1.17 g/cm<3> and is lower than that of cashmere, and the fibers are lighter; the heat-conducting property of the Cuqing fibers is 0.051 W/(m*DEG C) and is lower than that of the cashmere, and the heat-conducting property of cashmere is 0.055 W/(m*DEG C), so that the thermal insulation performance of the Cuqing fibers is better than that of the cashmere when the Cuqing fibers are taken as the raw material for weaving thermal underwear; the blended yarn prepared from the Cuqing fibers, the other cellulose fibers and the wool fibers through blending is subjected to weaving and after-finishing processes for preparation of the fabric, the antistatic property of the fabric can meet the level-A standard, the anti-pilling performance can reach level-4 or higher, and meanwhile, the fabric has excellent wear resistance, so that the service life of the thermal underwear is prolonged effectively while the comfort of the thermal underwear is guaranteed.

The invention discloses a method for preparing high strength, high tenacity and super hard metallic porcelain with Nami metallic ceramic matrix. The method comprises the steps as follow: adopt cold spraying method and take high voltage helium gas as the acceleration gas; spray the metallic porcelain powder which takes the Nami metallic ceramic as the matrix or the metallic porcelain powder containing components which can produce Nami porcelain precipitated phase into sediment to prepare metallic porcelain with metastable structure; the interface between the porcelain phase of the metallic porcelain and the metal phase, the metal phase and the metal phase and the spraying powder deformation particle in the metastable structure produces diffusion and interface reaction to gain high strength, high tenacity and super hard metallic porcelain with Nami metallic ceramic matrix. As the metallic porcelain takes the normal micron and submicron porcelain phase as the hardening and reinforcing phase; and takes the high strength and supper hard metallic porcelain as the matrix, the invention not only has the characters of high strength and supper hard of the metallic porcelain material, but also has the characters of high tenacity and better wear-proof property. The invention is a new method for preparing high strength, high tenacity and high wear-proof property metallic porcelain coating.

The invention discloses an electrodeposition method for preparing a chromium-carbon nano tube composite coating in trivalent chromium plating solution. The invention adds a carbon nano tube in a basis electrolyte comprising chromic chloride to prepare the chromium-carbon nano tube composite coating with smooth surface and firm combination with the substrate by controlling the proper process conditions. The invention has the advantages that the prepared chromium-carbon nano tube composite coating has a thickness of more than 5mum, and has higher hardness, abrasion resistance and corrosion resistance than the hexavalent chromium plating coating; and the method can replace the conventional hexavalent chromium plating process under a certain friction working condition.

The invention discloses spray paint and a process for spraying the paint. The paint and the process can achieve anti-corrosion and oil-pollution-resistant effects. The spray paint comprises primer and a finishing coat. The primer comprises the following components of epoxy resin, fluorinated alkene resin, ceramic fine powder, ethyl acetate, polyurethane, heptadeceny imidazoline and butanedioic acid salt; the finishing coat comprises the following components of organic silicon resin, amino resin, polymethacrylate, nano-silica, organosilicon leveling agents, simethicone, film-forming resin, an acid catalyst and a manganese drier. A coating formed through the spray paint has good abrasion resistance and oil pollution resistance, and is high in smoothness and good in adhesive force. The formed coating does not contain chromium, is nontoxic and environmentally friendly, and is particularly suitable for spraying of inner panels and outer panels of kitchen electric appliances.

The invention provides a surface coating cutting tool. According to the surface coating cutting tool, a base surface is covered by a hard coating layer constituted by a (Ti1-XA1X)(CYN1-Y) layer having a cubic crystal structure, which adopts the chemical vapor deposition film formation method using the A1(CH3)3 as the reaction gas. The atomic ratio of X,Y are 0.55<=X<=0.95, 0.0005<=Y<=0.005. The hard coating layer is provided with an area A layer and an area B layer. During the measurement of an inclined angle between a normal of a (110) surface of a grain and a normal direction of the base surface, the inclined angle value distribution can be acquired. A highest peak value exists in the inclined angles of the area A layer in a range from 2 to 12 degrees, and the degree ratio in a range from 2 to 12 degrees is more than 45% of the whole degrees. A highest peak value exists in the inclined angles of the area B layer in a range from 25 to 35 degrees, and the degree ratio in a range from 25 to 35 degrees is more than 60% of the whole degrees. The area A layer and the area B layer exist alternatively, and are respectively more than one layer.

An automobile brake lining is prepared from, by weight, 14%-18% of ceramic fibers, 3%-6% of carbon fibers, 3%-7% of cellulose fibers, 8%-13% of aramid fibers, 8%-13% of modified phenolic resin, 2%-4% of aluminium oxide, 3%-5% of barium sulphide, 6%-9% of graphite, 4%-6% of zirconite, 8%-12% of quartz sand, 1%-2% of bauxite, 1%-2% of zinc oxide, 2%-4% of chemigum, 1%-4% of antimony sulfide, 7%-10% of friction powder and 6%-9% of nanometer silicon carbide. According to the automobile brake lining, a ceramic brake pad is kept to be stable in braking, low in noise and the like, the mechanical strength of the brake lining is further improved, and the service life of the brake lining is prolonged; meanwhile, recession and expansion of the high temperature can be avoided, and the automobile brake lining has the advantages of being good in braking performance and abrasion resistance, stable in braking, less in dust, moderate in hardness and good in high temperature recovery performance.

A friction stir welding tool is provided which allows for excellent wear resistance and high joining strength even in a process of joining difficult-joining materials. A friction stir welding tool of the present invention is used for a friction stir welding process and includes a base material. The base material includes a hard phase and a binder phase. The hard phase includes TiCN. The binder phase is made of an iron group metal. A mass ratio B_s of the binder phase to the base material in a region having a thickness of 20 μm from a surface of the base material is smaller than a mass ratio B_i of the binder phase to the base material in a region beyond the thickness of 20 μm from the surface of the base material.

The invention provides a nickel titanium memory alloy/polyurethane compound damping panel and a preparation method thereof and relates to a compound damping panel and the preparation method thereof. The invention aims to solve the technical problems that the present surface layer is a 316L stainless steel compound steel panel, the tensile strength is low, the corrosion resistance is inferior and the present compound damping material has inferior damping effect. The preparation method according to the invention comprises the following steps: placing a nickel titanium memory alloy panel and a polyurethane panel into a hot press, and then pressing for 5-20min under the conditions of 185-195 DEG C temperature and 40-50N pressure, and taking out and cooling in air. The tensile strength of the compound damping panel provided by the invention is 600-800MPa; the precipitation volume of nickel ions in Nacl solution is 0.17ug/ml; the tensile strength is high; the corrosion resistance is excellent; a damping loss factor can reach 0.2; the vibration-reducing and noise-reducing effects are good; and the compound damping panel can be widely applied to passenger cars, trains, ships and buildings.

A sheet conveying apparatus includes: a first conveying guide that has a first conveying face of a conveying path; a second conveying guide that has a second conveying face opposed to the first conveying face; and a guide portion that is provided at any one of the first conveying guide and the second conveying guide, the guide portion has an elastic member that is fixed to one of the first conveying guide and the second conveying guide, and a rigid member that is provided on the face side of the elastic member on which the sheet passes and that has a surface more rigid than that of the elastic member, and the elastic member is deformed by pressing of the conveyed sheet when the sheet passes through the guide portion.

The invention discloses a transparent heat insulation film which is characterized by comprising a transparent film substrate and a heat insulation coating; the heat insulation coating comprises the following components in mass percent: 20%-40% of polyurethane acrylate, 10%-20% of organosilicon modified polyester acrylate, 25%-50% of monomer, 5%-20% of POSS-carbon-nano-tube-ATO hybrid material, 4%-6% of photoinitiator, 0-10% of organic solvent, 2%-3% of ultraviolet absorber, and 0.3%-1.5% of additive; the sum of the mass percent of all the components is 100%, wherein through the use of the POSS-carbon-nano-tube-ATO hybrid material, not only is the heat insulation effect enhanced, but also the ultraviolet ageing resistance and the wear resisting property of the coating can be improved. The invention further provides a preparation method of the transparent heat insulation film; the prepared transparent heat insulation film is good in transparency, heat insulation effect and anti-ultraviolet effect, is simple in technology and low in cost.

The blade member is formed of a polyurethane member produced through curing and molding a castable polyurethane composition containing at least a polyol, an isocyanate compound, and a cross-linking agent. The polyurethane member exhibits a storage modulus (1 Hz) as measured at 40° C. of 2.0×10⁷ Pa or higher and a (G′10)/(G′50) of 3 or lower, wherein represents a storage modulus (1 Hz) as measured at 10° C. (Pa) and G′50 represents a storage modulus (1 Hz) as measured at 50° C. (Pa).

The invention discloses a preparation method of PBT silver-ion antibiotic moisture-absorption deodorization fibre, which comprises the following steps of: (1) crystallizing a material in advance, wherein the material is the mixture of a PBT slice and a silver-ion SHT antibiotic plastic master batch; concretely, crystallizing in advance by adopting dry hot air; (2) feeding the material in a screw type: firstly, drying the master batch by the hot air and then feeding the material obtained after mixing the master batch and the PBT slice into a screw extruder by a special master batch feeding machine which can measure the master batch; (3) filtering: filtering the mixture extruded by the extruder wherein the continuous production of spinning and the constancy of the pressure of the screw extruder are ensured during filtering; and (4) spinning: delivering the mixture from the filter to a spinning assembly, ejecting from a spinneret plate by the spinning assembly, and then coiling and forming. The fibre has favorable durability, dimensional stability and better elasticity, and the elasticity is free from the influence of the humidity.

A wear-resistant copper-based alloy includes: at least one selected from the group made of molybdenum, tungsten, and vanadium and niobium carbide; chromium in an amount of less than 1.0% in terms of wt %; and a matrix and hard particles dispersed in the matrix, in which the hard particles include niobium carbide and at least one selected from the group made of Nb—C—Mo, Nb—C—W, and Nb—C—V around the niobium carbide.

A silicon nitride member, a method for manufacturing the silicon nitride member and a cutting tool are disclosed. A cutting tool 1 includes a substrate 3 formed through sintering of a silicon nitride material, and a hard film 5 composed of a plurality of hard-component layers. The cutting tool 1 is characterized in that: when the amount of a grain boundary phase as measured at a central portion (for example, the barycenter) of the substrate 3 is taken as 100% by volume, the amount of the grain boundary phase at a depth of 300 μm from the surface of the substrate 3 is 50% to 70% by volume; when the strength of the substrate 3 as measured before coating with the hard film 5 is taken as 100%, the hardness as measured after coating with the hard film 5 is 70% to 95%; and a change in weight of the substrate 3 associated with sintering is 1.5% to 3.5% by weight.

This invention involves the chemical engineering and the surface processing technique fields .The invention provided a kind of steel rail that keeps subway from fan to flow to decay, the strength of insulating is 45.0V/mm-103.4V/mm; The specific resistance is 6.7*1013omega .cm- 5.8*1015omega .cm. The steel rail is made through putting on insulate coating and antisepsis eclipse coating outside it. The invention of steal rail's produce craft is simple and operating is simple too, The steal rail's surface layer from producing can cut off the leak that lead electric current lies in the subway circuit ,resolving the problem of dying decay, having a good market foreground.

The invention provides glass ceramic with abrasion resistance prepared by adopting industrial wastes. In the invention, chromic oxide is taken as a nucleating agent, and nickel sulfide and magnesium diboride can intensify a nucleating effect of chromic oxide, so as to further reduce interface energy, so that the nucleation activation energy is reduced, and the formation of a crystal form is facilitated. Nickel sulfide and magnesium diboride are matched with other ingredients, so that a glass ceramic plate with excellent abrasion resistance and acid and alkali resistance can be prepared. With adoption of a production process provided by the invention, the abrasion resistance of the prepared glass ceramic plate can be further improved, the porosity defect can be reduced, and the surface porosity is decreased.

To provide a forged crankshaft having an excellent wear resistance. The forged crankshaft according to the present embodiment includes a non-heat treated steel material. The non-heat treated steel material has a chemical composition which contains, by mass %, C: 0.45 to 0.70%, Si: 0.75 to 1.30%, Mn: 1.00 to 2.00%, S: 0.03 to 0.30%, Cr: 0.05 to 0.30%, Al: 0.005 to 0.050%, and N: 0.005 to 0.020%, the balance being Fe and impurities, and satisfies the following Formula (1):

1.1C+Mn+0.2Cr>2.0   (1)

where a symbol of each element in Formula (1) is substituted by the content (mass %) of the each element. A matrix of the non-heat treated steel material is a ferrite-pearlite microstructure in which an area ratio of pro-eutectoid ferrite is less than 10% or a pearlite microstructure.

The invention discloses a preparation method of a moisture-proof traditional Chinese medicine coated film, which relates to a coating technology of the traditional Chinese medicine and belongs to the medicinal preparation field. The moisture-proof traditional Chinese medicine coated film comprises the following components: 30-40 parts of hydroxypropyl methyl cellulose, 5-8 parts of triethyl citrate, 6-10 parts of xylitol, 4-8 parts of castor oil, 4-8 parts of tween-80, 14-18 parts of dextrin, 6-10 parts of aerosol, 6-10 parts of zein, 5-10 parts of 1% of artificial food coloring solution, 350-420 parts of distilled water (40-50 DEG C) and balance of ethanol with 95% of concentration; wherein weight unit of solid is gram, and volume unit of liquid is milliliter. The moisture-proof traditional Chinese medicine coated film has the beneficial effect of stable chemical property of a film forming substance, inertia to an enzyme system, no physiological toxicity and no usage of cane sugar; the coated film has the advantages of moisture resistance, heat resistance, cold resistance and abrasion resistance which are better than that of the sugar coated tablets, so that the stability of the coated film is increased, and storage period is prolonged.