53results about How to "Uniform wear resistance" patented technology

The invention provides a method for preparing a ceramic particle reinforced steel-based mesh material, which comprises: forming a mixture of hard ceramic particles and alloy powder into strip blocks by powder sintering or by using and adhesive; joining the strip blocks into a corresponding mesh structure or joining and overlapping the strip blocks into mesh three-dimensional framework structure; and performing normal sand casting or lost foam casting, namely melting a substrate metal material, pouring the molten substrate metal material in a molding cavity, allowing the molten substrate metal material to cool and condense at room temperature, removing sand and obtaining the ceramic particle reinforced steel-based mesh material. The obtained ceramic particle reinforced steel-based mesh material gives full play to the high wear resistance of the ceramic particle hard phase and the toughness of the steel base; and the method with convenience for regulation and reliable process solves the problem of incomplete reaction of the composite material, nonuniform reinforcing phase particle distribution, pollution weakening on a reinforcing phase interface and the like and is used in wear resistance fields of mines, power, metallurgy, coal, building materials and the like.

The invention relates to a vacuum preparation method for SiOx plating coat of organic precoat metal plate, including the following steps: firstly, surface cleaning and surface activation are completed under plasma condition; secondly, SiOx filming is completed on an organic coating inside a vacuum filming unit through a vacuum seal device. Based on the two steps, the following steps can also be adopted: thirdly, oxygen plasma is generated by a plasma generator inside a post treatment unit and the outermost surface layer of the film generated by the above steps is converted to SiO2 and tends to a steady state; fourthly, product with steady SiOx surface is formed under nitrogen or inert gas condition. The preparation method improves the anti-wear and anti-scratching performance of organic coating and adopts nonpolluting process; meanwhile, flexible and accurate adjustment of related parameters of the film can be realized.

The invention discloses a production formula and construction technology of an ultra-wear-resistant ground. The ultra-wear-resistant ground is prepared by the following steps: premixing a dry powder material A and a liquid material B according to a weight ratio of 5:1 to 10:1 on the construction site so as to obtain semi-dry mortar, evenly spraying the semi-dry mortar on the surface of concrete, which starts to cure, for 2 to 3 times so as to make the surface flat and smooth, levelling and polishing the surface by using a mechanical trowelling machine, and controlling the flatness according to the related national standards during the construction process. The mixing of the dry powder material A and the liquid material B can greatly improve the wear resistance and strength of the wear-resistant ground. The dry powder material is subjected to dry-wet premixing before spraying, so the requirement on base slurry is low, the dry powder material can more easily penetrate into and combine with the basic layer, and the finished ground has uniform strength and wear resistance. Moreover, material spraying after the wet-dry premixing will not generate dusts, so the environment pollution is avoided, and the health of workers is protected. The materials that are subjected to wet-dry mixing are more easily combined, and the phenomenon of peeling, delaminating, and insufficient curing is avoided.

The invention relates so an impregnated tooth applicable to a high-abrasiveness hard formation and a preparation method of the impregnated tooth. The impregnated tooth comprises an impregnated matrix and a diamond which is arranged in the impregnated matrix in an impregnated mode. The impregnated matrix comprises, by weight, 60% to 70% of tungsten carbide, 10% to 25% of cobalt powder, 5% to 10% of copper powder, 2.5% to 5% of nickel powder and 2.5% to 5% of manganese powder. The preparation method comprises the steps that the components for preparation of the impregnated matrix are evenly mixed, and then granulation is carried out on the mixture and diamond particles which are wetted by a glycerol alcoholic solution so that balls can be formed, wherein the concentration of the diamond ranges from 110% to 150%; the prepared balls are placed into a mold to be processed through sintering forming so that the impregnated teeth applicable to the high-abrasiveness hard formation can be obtained, wherein the sintering temperature ranges from 1080 DEG C to 1100 DEG C, the sintering pressure ranges from 40 MPa to 50 MPa, and the temperature holding time ranges from 5 min to 10 min. The impregnated tooth is high in strength, abrasive resistance and drilling efficiency, and long in service life.

The invention provides a preparation method for a WC-Co cemented carbide nozzle for an oil field. Co powder, WC powder, TaC and NbC are mixed and then subjected to wet grinding, drying, plasticizer adding, pressing forming, plasticizer removal and sintering, so that WC-Co cemented carbide is obtained; during mixing, based on the total weight 100% of the mixed materials, Co powder accounts for 8.5-13wt%, TaC/NbC accounts for 0.35-0.55wt%, and the rest is WC. The synergism of the materials and proportioning in the mixing process is favorable for inhibiting growth of grains and improving the alloy structure after sintering, thereby improving the toughness, high-temperature strength and hardness of the alloy, improving the heat impact resistance and heat fatigue resistance of the alloy, purifying the grain boundary, and increasing the interface binding force. Distribution of the Co phase is more uniform, and the toughness and abrasion resistance of the alloy are greatly unified.

The invention discloses a high-fluidity, scratch-resistant and low-temperature-folding-resistant ABS/TPU alloy material which is prepared from the components by weight percentage of 60 wt%-85 wt% of ABS resin, 10 wt%-30 wt% of TPU and 1 wt%-10 wt% of compatilizer; the preparation method comprises the steps that the ABS resin and the TPU are dried under the condition of 85 DEG C to 100 DEG C for 2-4 hours, then the ABS resin and the TPU are fully mixed with other component raw materials according to the ratio by a high-speed mixer for 2-10 minutes, the mixtures is then transmitted to a double-screw extruder by a precision metering feeding device, and a product is obtained through mixing, extrusion, bracing, cooling and grain cutting; the prepared ABS/TPU alloy material has excellent scratch resistance, low low temperature folding resistance and high fluidity, the preparation method is simple in process, convenient to operate and suitable for industrial production, and the ABS/TPU alloy material can be applied to the fields of small electronic consumer products, electric tools, computer keys, automobile bumpers and the like.

The invention discloses high-strength high-wear-resistant bainite cast steel used for a block cast middle groove, and a preparation technology thereof. The preparation technology comprises the following technical steps: preparing raw materials and evanescent modes, carrying out raw material hot melting, casting the evanescent modes, carrying out diffusion annealing preprocessing, carrying out caststeel salt bath quenching and tempering and detecting cast steel quality. The bainite cast steel used for the middle groove has the characteristics of high strength and high wear-resistant performance, the middle groove is subjected to integral casting forming, and the problem that all positions have inconsistent wear resistance is avoided. When a work surface is turned, maintenance is not required, the current work surface is directly turned to a next work surface, and the coal mining efficiency is improved. Meanwhile, since the materials of different positions are different, so that the effect of new goods are traded for old goods is realized, waste middle groove can be recovered and recast, waste is recycled, and the fully mechanized mining cost of users is greatly lowered, thus realizing an important meaning for the energy and material saving, the circular economy and the sustainable development of coal production.

The invention belongs to the technical field of polymer films for electronics tapes and particularly relates to a preparation method of biaxially oriented polyester film for electronics tapes and biaxially oriented polyester film; the method includes the steps of pretreating materials, melt-extruding, stretching and drawing; an extruder used in the melt-extruding step has filtration precision of a head strainer being 5-10 Mum; the stretching step includes sequential steps of longitudinal stretching, transverse stretching and film shaping, wherein the film shaping step includes sequential steps of thermal shaping and quick cooling, a platinum catalyst and a discharge device are mounted in an area of film thermal shaping, and part of oligomers around the film are decomposed with decomposed products discharged; undecomposed oligomers of the film and oligomer dust are separated from the film by a suction device; the film prepared herein has very small thickness and further improved insulating property and heat resistance, and each part of the film is more uniform in performance.

The invention relates to a preparation method of white carbon black/graphene oxide nano-hybrid filler, the nano-hybrid filler and application of the nano-hybrid filler. The preparation method comprises the following steps: carrying out high-speed grinding and dispersion to prepare stable white carbon black slurry modified by a silane coupling agent; then uniformly stirring and grinding and dispersing the modified white carbon black slurry with a graphene oxide/water suspension solution subjected to high-speed grinding and dispersion and/or ultrasonic treatment; connecting white black carbon and graphene oxide through a bridge effect of the silane coupling agent; and then spraying and drying to prepare the white carbon black/graphene oxide nano-hybrid filler. The nano-hybrid filler is filled into any rubber variety through a traditional melting and blending technology to prepare high-performance tire tread. The preparation method and an application technology of the nano-hybrid filler are simple; and when the nano-hybrid filler is applied to rubber, nano-dispersion of graphene in a rubber matrix can be realized and the limitation of the rubber variety can be broken through, so thata composite material has excellent mechanical property, wet slipping resistance, cutting resistance, properties of delaying dynamic and static crack growth, and the like.

The invention relates to a zone building bionic coupling surface repairing waste machine tool guide rail. The surface of the guide rail is divided into three zones including a zone A, a zone B and a zone C from big to small according to the hardness obtained before repairing; strip bionic coupling elements, dot and strip combined bionic coupling elements and net bionic coupling elements are machined on the surface of the zone A, the surface of the zone B and the surface of the zone C correspondingly; and each zone is divided into a plurality of fine adjustment zones according to the hardness obtained before repairing, the fine adjustment zones are changed from big to small along with changes of the hardness obtained before repairing, and the distances of the coupling elements on the zones are changed from small to big. According to the zone building bionic coupling surface repairing waste machine tool guide rail, corresponding bionic coupling models are matched with the surfaces of the different hardness zones of the guide rail, the problem about uniformity during non-uniform repairing is solved, and the working years of a repaired machine tool can reach even exceed the working years of a new machine tool; and the service life of the repaired guide rail can reach 8 years to 12 years, the using years of the guide rail and the machine tool are greatly prolonged, scraping of the overall machine tool is avoided, resources wasted for manufacturing the new machine tool are saved, and a large number of resources are saved.

The invention discloses a diamond composite sheet. A diamond layer is compounded on hard alloy, and a glomerocryst diamond layer is compounded on diamond. The invention greatly improves the radial temperature-field distribution of the composite sheet and ensures that cobalt in the hard alloy uniformly spreads cross the diamond layer. The composite sheet prepared with the method has the advantages that the abrasive resistance of the diamond layer is uniform, the diamond layer is firmly combined with the hard alloy layer, and the impact toughness and the heat stability are enhanced.

The invention provides a method for producing WC-Co hard alloy oilfield spray nozzles. The method includes compounding, by weight, 8.5-13% of Co powder, 0.35-0.55% of Tac, 0.35-0.55% of Nbc and the balance WC powder, and conducting wet grinding, spray drying, pressing forming and sintering so as to obtain WC-Co hard alloy, wherein a sintering process includes holding at 300-500 DEG C, heating to 400-500 DEG C at a hydrogen flow speed of 55-65 L/min prior to holding, heating to 550-650 DEG C at a hydrogen flow speed of 35-45 L/min prior to holding, conducting carbon correction in a mixed atmosphere with a ratio of CH4 to H2 being (1-2) to (98-99) at a mixed atmosphere flow speed of 35-45 L/min and at 600-1,000 DEG C, holding in a mixed atmosphere with a ratio of CH4 to H2 being (1-4) to (96-99) at 1,000-1,200 DEG C for precise carbon correction. The method is beneficial to improvement in comprehensive performance and production stability of the WC-Co hard alloy oilfield spray nozzles.

The invention discloses a preparation method of a boron-nitrogen co-doped nano-based an oriented diamond film. The preparation method comprises the following steps: by taking a heater CVD (Chemical Vapor Deposition) device as deposition equipment, adding boron-nitrogen-containing compounds into a conventional hydrogen and acetone reaction system to form a co-doped system; adjusting the reaction technical parameters; preparing the film where diamond particle particles and oriented diamond particles co-exist. The method is simple in process flow. The obtained film has the characteristics that the film has the surface which is leveler than a randomly oriented micron order diamond film, high and uniform wear resistance, easiness in polishing, low internal stress, high adhesive force of the film base and the like.

The invention discloses a grinding roller and a grinding disc tile. The grinding roller and the grinding disc tile comprise basal bodies and multiple ceramic rods, wherein the ceramic rods are casted in the basal bodies along the abrasive surfaces of the grinding roller and the grinding disc tile. The grinding roller and the grinding disc tile provided by the invention guarantee that the working layers of the grinding roller and the grinding disc tile have higher hardness, the adhesive wear and the cutting abrasion are reduced on one hand when the wearable ceramic rods are casted in the basal bodies, and the grinding roller and the grinding disc tile are guaranteed to have good tenacity on the other hand to resist exotical impact. The grinding roller and the grinding disc tile provided by the invention adopt routine antifriction material to support and protect a ceramic material, the super stiff and wearable ceramic material is utilized to grind the processed mineral, and the advantage composite matching of the material is realized.

The invention relates to a novel pinch roll. The novel pinch roll comprises an upper pinch roll body and a lower pinch roll body, wherein the upper pinch roll body comprises an upper pinch roll sleeve, an upper pinch roll mandrel is arranged in the upper pinch roll sleeve, the length of the main body of the upper pinch roll mandrel is greater than that of the main body of the upper pinch roll sleeve, end face baffles are arranged at the two ends of an opening of the upper pinch roll sleeve, a connecting key block is arranged on one side of each end face baffle, each connecting key block is provided with a key block fastening bolt used for fixing, baffle fastening bolts used for fixing are arranged on the end face baffles and are opposite to the connecting key blocks, shaft shoulders matched with the inner sides of the end face baffles on the two sides are arranged in the middle of the upper pinch roll mandrel, and mandrel connecting key blocks are arranged at the connecting positions of the end face baffles and the upper pinch roll mandrel; and the lower pinch roll body comprises a lower pinch roll sleeve, and a metallurgical bonding lower pinch roller mandrel is arranged in the lower pinch roll sleeve. The novel pinch roll overcomes shortcomings of existing technology and is reasonable in structure and high in abrasion resistance and toughness, and the comprehensive use performance of the pinch roll is improved.

The invention discloses a rubber covered roller of an island structure and a preparation method thereof, and belongs to the technical field of rubber covered rollers. According to the rubber covered roller of the land structure, a rubber layer is prepared by mixing a parent rubber compound and individual particle glue. The elongation of the parent rubber compound is 100-200% higher than that of the individual particle glue, the strength of the parent rubber compound is 4-8MPa higher than that of the individual particle glue, and the Shore A hardness of the parent rubber compound is 8-14 degrees lower than that of the individual particle glue. The preparation method of the rubber covered roller of the island structure comprises the steps of mixing, vulcanizing, crushing, sieving, mixing secondarily, winding and forming, vulcanizing secondarily and turning. According to the rubber covered roller of the island structure, the friction coefficient and the wear resistance of the rubber covered roller can be improved effectively. Influence of the friction coefficient and the wear resistance on performance of a material is eliminated in a using process, and slip, non-uniform stress and nowear resistance and cracking phenomena are prevented.

The invention discloses a single-component water-based top-coat for a plastic runway. The single-component water-based top-coat is prepared from the following raw materials in parts by weight: 45-55 parts of waterborne acrylic resin, 30-40 parts of waterborne polyurethane resin, 1-5 parts of a water-soluble graphene aqueous dispersion, 0.3-0.5 part of a wetting agent, 0.2-0.4 part of a defoaming agent, 5-7 parts of a cosolvent, 0.3-0.5 part of a thickening agent, 0.5-0.7 part of a preservative and 3-6 parts of deionized water. The single-component water-based top-coat for the plastic runway has the advantage of relatively good wear resistance; the invention also provides a preparation method of the single-component water-based top-coat, and the graphene in the raw materials can be uniformly dispersed in the single-component water-based top-coat, so that the wear resistance of the top-coat is improved.

The invention discloses a high-tenacity high-strength cast steel wear-resistant material and a preparation method thereof. The method comprises the technology steps of raw material preparation, raw material hot melting, TIN adding according to a ratio, cast steel annealing, cast steel quenching and tempering and cast steel quality detection, through a series of thermal treatment technologies of isothermal quenching, high-temperature tempering and the like, the high-tenacity high-strength cast steel wear-resistant material has good tensile performance, and is not prone to deform or break, and by adding an appropriate amount of TIN in a hot melting process, the elongation at break is higher than or equal to 12%; V shape impact energy is higher than or equal to 45 J, the rockwell hardness HRCis 40-45, cast steel has higher impact resistance, the wear resistance performance of the cast steel is 1.5 times the wear resistance performance of an NM450 wear-resistant plate, the cast steel hasthe good wear resistance performance, wear resistance degrees of the cast steel are even, by conducting annealing in an annealing furnace at 900+/-3 DEG C in cooperation with a fan and blades, the produced cast steel is even in wear resistance, and the problems that cast steel is poor in weldability, high in welding stress and prone to break, and has many welding defects due to the fact that various portions are made from different materials are solved.

The invention relates to the technical field of oil cylinder manufacturing, and discloses a manufacturing process of an oil cylinder. The manufacturing process of the oil cylinder sequentially comprises the following process steps of blank forging, blank heat treatment, turning, laser strengthening, honing and the like, wherein the laser strengthening step comprises the operation of carrying out strengthening treatment on the surface of an inner hole of the oil cylinder by using a laser strengthening treatment device, the laser strengthening treatment device comprises a laser generator and a light guide main shaft connected with the laser generator, the front end of the light guide main shaft is provided with a laser output port perpendicular to the axis of the light guide main shaft, anda laser strengthening density controller used for achieving the interrupted strengthening on the surface of the inner hole of the oil cylinder is arranged at the laser output port. According to the manufacturing process of the oil cylinder, the surface quality of the inner hole of the oil cylinder is improved, the abrasion between the oil cylinder and a piston is reduced, and then the stability ofequipment application is improved.

The invention discloses an online hollow cable and a diameter expansion mechanism for processing the same. The online hollow cable comprises an aluminum tube, a copper tube and an insulating jacket layer, the aluminum tube is mounted inside the copper tube in a sleeved manner, a main insulating layer is connected outside the copper tube in a sleeved manner, a semiconductive layer is connected outside the main insulating layer in a sleeved manner, a shielding protection layer is connected outside of the semiconductive layer in a sleeved manner, and the insulating jacket layer is connected outside the shielding protection layer. Structural features of conventional buses are changed according to characteristics of current; by adopting a tubular structure and shielding insulation technology, dead weight is reduced, and the online hollow cable is safe, reliable, energy-saving and material-saving. Aluminum is used to save copper, so that cost is lowered substantially, and the nation and thepeople can be benefitted; an insulation shielding material can be used in various severe natural conditions, has excellent electrical performance and chemical stability and is little in medium loss, flame-resistant and aging-resistant, and service life is longer than 40 years. The shielding material is a copper film or an aluminum film. A shielding magnetic field is uniform in distribution, localdischarging potential is improved, and electric energy loss is lowered.

The invention discloses a coating wear-resistant agent and a preparation method and application thereof. The wear-resistant agent is prepared from ultra-high molecular weight polysiloxane, ternary-block polysiloxane, reinforce filler, organic solvent, compound emulsifier and water. The method includes the following steps of firstly, dissolving reinforce fibber in organic solvent to obtain a reinforce filler solution; secondly, adding ultra-high molecular weight polysiloxane, compound emulsifier and the reinforce filler solution into a dispersing kettle to be dispersed for 1-3 hours at a temperature of 80-120 DEG C, and decreasing the temperature to 20-40 DEG C after materials are evenly stirred; thirdly, dropwise adding water while dispersing, and continuing to conduct dispersion for 2-6 hours at a temperature of 20-40 DEG C after dropwise adding is completed; fourthly, transferring materials from the dispersing kettle into a homogenizer to be fully homogenized, and obtaining the coating wear-resistant agent. The coating wear-resistant agent is stable in performance, uniform in granularity, capable of being used for preparing coating, paint, ink, gloss oil, plastic and the like, high in system compatibility, and capable of providing excellent wear-resistant and scratch-resistant capacity and a smooth hand feeling.