36results about How to "Improve high temperature and corrosion resistance" patented technology

The invention relates to an abrasion-resistant gear for a high-speed gear box. The abrasion-resistant gear comprises C, Cr, Si, Mn, Zn, Cu, Ag, Au, Pt, Ni, W, Mo, Nd, Ce, Eu, Lu, Ti, AlN, S, P, talc powder, magnesium oxide, tungsten carbide, montmorillonite and Fe. The abrasion-resistant gear for the high-speed gear box has the advantages that raw materials for the abrasion-resistant gear contain the Zn, the Ni and the W, and accordingly the heat resistance and the corrosion resistance of the gear can be improved.

The invention discloses environment-friendly anhydrous stemming for a submerged arc furnace and a preparation method of the environment-friendly anhydrous stemming. The environment-friendly anhydrous stemming is prepared from the following raw materials in parts by weight: 10 to 20 parts of forsterite, 10 to 45 parts of magnesia, 10 to 20 parts of silicon carbide, 10 to 25 parts of coke, 5 to 15 parts of asphalt, 10 to 20 parts of clay, 5 to 15 parts of nitride, 3 to 10 parts of kyanite, 0 to 15 parts of quartz powder, 12 to 20 parts of carbon black oil, 2 to 8 parts of anthracene oil and 0.5 to 2 parts of plasticizer, wherein the nitride is one or a mixture of ferro silicon nitride, silicon nitride, aluminum nitride and titanium nitride, and the carbon black oil and the anthracene oil are premixed to form a composite environment-friendly binding agent for standby use; raw materials are weighed and added into a mixing mill to be dry-mixed; the binding agent is added, mixed and milled; the plasticizer is added and stirred; and the mixture is extruded and molded. The environment-friendly anhydrous stemming is safe to the human body and environment, high in performance, low in consumption, and good in slag erosion resistance and scouring resistance.

The invention relates to a highly-permeable ultrafiltration composite ceramic coating film and a preparation method thereof, and belongs to the technical field of film separation. The highly-permeable ultrafiltration composite ceramic coating film comprises a ceramic base film, wherein the surface of the ceramic base film is sequentially provided with a silane coupling layer, a polyimide layer from interior to exterior; the mass ratio of the ceramic base film to the silane coupling layer to the polyimide layer is 1:(0.001 to 0.005):(0.01 to 0.1). The highly-permeable ultrafiltration composite ceramic coating film has the advantages that hyperbranched polyamide-amide is used as a pore passage building template, polyimide is used as a separating film, and the polyimide is grafted to the surface of the ceramic film in a covalent way by in-situ polymerizing, so that the composite separating film can simultaneously reach the high-selectivity and high-permeability advantages of a polymer film and high temperature-resistant and corrosion-resistant advantages of an inorganic film; the pore passage size and structure of the commercial ceramic film are improved, and the good permeability of the separating film is realized.

The invention discloses a high-temperature water-wet maintenance simulation test device and method of cement stone of a thermal production well. The device is mainly composed of a nitrogen source (1),an intermediate water container (5), a CO2 gas source (10), a flowmetre (12), a closed kettle body A (13), a pressure gage (17), a condenser (19) and a heating furnace (22); cement stone (24) is putin the closed kettle body A (13); the closed kettle body A (13) is in the heating furnace (22); a water inlet is at the lower part of the side part of the kettle body A; the water inlet is separatelyconnected to the flowmetre (12) and a heating pressure manifold (11); the heating pressure manifold (11) is connected to the intermediate water container (5) and the nitrogen source (1), and also connected to the CO2 gas source (10); a water outlet is at the upper part of the side end of the kettle body A; the water outlet is connected to the pressure gage (17) and the condenser (19); the maintenance method can be used for simulating acid medium corrosion of cement stone of the thermal production well at different temperatures; and, if the closed kettle body A (13) is replaced by a closed kettle body B (25), the method can be used for testing the shear cementing strength and the channeling pressure of the cement stone in a high-temperature water-wet environment. The high-temperature water-wet maintenance simulation test device and method in the invention are reliable in principle and simple and convenient to operate, and have wide market prospect.

The invention relates to a nickel-based alloy surfacing welding process for an alloy tank. A welding process is carried out by way of cold metal transition welding, and shielded welding is carried outby adopting consumable electrode gas in the welding process. During use, the dilution rate of the surface of the surfacing is reduced greatly, the high-temperature resistance and the corrosion resistance of a material are improved and a welding material is saved by adopting the nickel-based alloy surfacing welding process by way of cold metal transition welding. Meanwhile, a multi-pass surfacingmode with at least two passes is adopted in the welding process to fill the alloy tank, so that the welding defects of incomplete fusion, solder skips and the like during welding can be solved, and the welding quality is guaranteed.

The invention relates to a fireproof anti-corrosion coating material and a preparation method thereof. The fireproof anti-corrosion coating material can effectively solve the problems of poor water resistance, pollution resistance, heat resistance and corrosion resistance of an acrylate polymer emulsion in the prior art by introducing polysilsesquioxane, polysilane, TMPTA and graphene/nano-TiO2/spiral carbon fiber composite particles to modify the acrylate polymer skeleton, so that the prepared aqueous acrylate polymer emulsion has better water resistance, pollution resistance, heat resistanceand corrosion resistance and strong fireproof and anti-corrosion performance.

The invention discloses a high-temperature-resistant and corrosion-resistant sinking roller and a manufacturing method thereof, and belongs to the field of hot dipping equipment. The high-temperature-resistant and corrosion-resistant sinking roller comprises a roller body and a roller shaft, the surfaces of the roller body and the roller shaft are sprayed with coatings, and coating materials are prepared from following raw materials including, by weight, 70-90 parts of WC, 8-15 parts of Co and 3-15 parts of Cr3C2; the surface of the roller body is circumferentially provided with a groove, thebottom surface of the groove is a circular arc transition curved surface; the roller body is made of 316L stainless steel; and the roller shaft is made of a tungsten chromium cobalt alloy. The sinkingroller is made through groove processing, pre-treatment, coating material preparation and supersonic flame spraying. According to the high-temperature-resistant and corrosion-resistant sinking rollerand the manufacturing method, the surfaces of the roller body and the roller shaft of the sinking roller are sprayed with the coating materials with the specific components, the corrosion rate of thesinking roller is greatly reduced, and the service life of the sinking roller is effectively prolonged.

The invention relates to an environment-friendly vent cap for a high-speed gearbox. The environment-friendly vent cap comprises a vent hood, a vent pipe and a base, the vent hood and the upper end of the vent pipe are fixedly connected, and the base and the lower end of the vent pipe are fixedly connected; a cavity is formed in a hood body at the upper end of the vent hood, a vent hood connection portion is formed at the lower end of the vent hood, the vent hood is provided with an exhaust port, and a foam copper filter screen is arranged at the exhaust port; a gas and oil separator is arranged at the upper end in the vent pipe, oil baffle plates are arranged at the lower end in the vent pipe, and a first oil return pipeline is arranged in the vent pipe; a second oil return pipeline is arranged in the base and communicated with the first oil return pipeline, and the vent pipe is wrapped by a clamp jacket communicated with a circulating water pump. According to the environment-friendly vent cap for the high-speed gearbox, by means of multiple cooperation of the foam copper filter screen, the gas and oil separator and the oil baffle plates, oil gas in high-temperature gas exhausted from the high-speed gearbox can be effectively intercepted, the oil gas in exhausted gas is greatly reduced, environment pollution is reduced, and the environmental protection effect is significant.

The invention relates to an impregnating layer for high temperature resistance and corrosion resistance surface modification of a nickel base alloy, and application of the impregnating layer. An impregnation agent comprises an Al-Y impregnation agent and a Cr-Y impregnation agent, wherein the Al-Y impregnation agent comprises the following components by weight percent: 10% to 15% of Al, 1% to 2% of Y2O3 and 6% to 10% of NH4Cl, and the balance being Al2O3; and the Cr-Y impregnation agent comprises the following components by weight percent: 12% to 18% of Cr, 1% to 2% of Y2O3 and 6% to 10% of NH4Cl, and the balance being Al2O3. A Cr-Al-Y composite impregnating layer can be prepared on the surface of the nickel base alloy through a two-step method by virtue of the impregnation agent, and the corrosion property of the obtained alloy is improved by 3 to 5 times compared with the corrosion property of a matrix alloy.

The invention relates to a graphene-based high-temperature-resistant anticorrosive paint and a preparation method thereof, and belongs to the technical field of anticorrosive materials, wherein the graphene-based high-temperature-resistant anticorrosive paint is obtained by mixing a component A and a component B according to a mass ratio of 9:1; the component A comprises the components in percentage by mass: 50 to 70% of a binding agent and 30 to 50% of a pigment filler; the binding agent comprises the components in percentage by mass: 60% of polymethylphenyl siloxane modified epoxy resin and40% of organic silicon; the pigment filler comprises the following components: graphene, chromium dioxide, titanium dioxide, zinc oxide, alumina powder, barium sulfate, magnesium carbonate, calcium carbonate, white carbon black micro-powder, quartz powder, graphite powder, green silicon carbide micro-powder, silicon carbide micro-powder, corundum micro-powder, silica powder, organic bentonite, mica powder and the balance being copper chromite black, iron oxide black and carbon fibers; and the component B is a curing agent. The anticorrosive paint has good comprehensive performance, strong corrosion resistance and high temperature resistance, and good comprehensive performance.

The invention discloses a ceramic coating capable of resisting high-temperature corrosion for protecting a hanging part in a tin bath of float glass and a preparation method thereof. The preparation method comprises: dispersing SiO2, FeO, TiO2, Cr2O3, NiO, CoO and alkali metal compounds in water to obtain slurry with a solid content of 50-70%, grinding the slurry with a ball milling method to obtain an abrasive, then applying the abrasive on the cleaned surface of the hanging part and then sintering the surface of the hanging part and the coating. The resulting high-temperature ceramic coating has high-temperature anti-oxidation capacity and can also effectively improve the corrosion resistance of the surface of a Ni-Cr high-temperature alloy; and in addition, the ceramic coating can act as a heat barrier coating, forms effective protection on the hanging part in the tin bath of the float glass, and has important practical significance in prolonging the service life of the hanging part in the tin bath of the float glass.

The invention relates to a soldering tin stove used for welding a PCB board, in particular to an impeller driving structure of the soldering tin stove. The structure comprises a motor and an impeller; driving wheels are arranged on a corresponding output shaft and a corresponding input shaft; leather belts are connected among the driving wheels; the leather belts are O-shaped rubber rings which are high-temperature resistant; the driving wheel comprises an inner wheel made of graphite and an outer wheel made of metal materials and used for wrapping the hub of the inner wheel. The structure of the invention effectively improves the influence of high temperature on the leather belts and a conveyor belt by changing the material of the leather belts and the driving wheels in the impeller driving structure, thus causing the driving of the motor to the impeller to be stable and guaranteeing the stability of tin wave generation and welding quality.