113results about How to "Achieving Corrosion Resistance" patented technology

The invention relates to a metal surface modification method. The invention first obtains a textured surface with a certain surface roughness value on the surface of a material by an electron beam texturing method, forms uniform tiny pits, and increases the bonding strength of the interface; then uses plasma The spraying process uses Co-based alloy or Ni-based alloy powder as the material to form a coating; finally, laser remelting technology is used to remelt the coating surface to improve the surface structure of the coating and improve the surface performance. Compared with the existing technology, this process can realize high temperature resistance, corrosion resistance, oxidation resistance, and fatigue resistance, and has high bonding strength, and the coating structure is uniform and compact, thereby greatly broadening the application range.

The invention discloses a multifunctional filter material for circulating water treatment, which is prepared from 1 to 10 weight percent of nano tourmaline powder, 55 to 80 weight percent of coarse tourmaline powder, 1 to 15 weight percent of kieselguhr, 1 to 15 weight percent of sepiolite powder, 1 to 15 weight percent of scallop powder, 1 to 10 weight percent of sodium bicarbonate and 0.5 to 1 weight percent of silver-carried zeolite powder. A preparation method comprises the following steps of: stirring and mixing raw materials uniformly, injecting the uniformly mixed powder into a turntable machine, and rotating the powder for 15 to 30 minutes with controlled humidity of 15 to 50 percent and rotational speed of 20 to 200 revolutions per minute by using attapulgite of 0.1 to 1 millimeter as a core; and finally sintering the powder for 4 to 8 hours at the temperature of between 400 and 600 DEG C in a muffle furnace to form a ceramic filter material with the diameter of 1 to 10 millimeters. The filter material can effectively remove Ca2+ and Mg2+ from the water and achieve the effects of inhibiting scales, preventing corrosion and removing biological sludge.

The invention relates to an integrated system for utilizing residual heat of boiler smoke and removing sulfur. A tubular heat exchanger is used as a heat exchange main body of the system and is arranged on a tail flue between a booster fan and a desulfurization absorber, wherein the tubular heat exchanger is connected to a condensed water heating system; sets of nozzles are arranged in the heat exchanger for intermittently washing the inner tube wall of the heat exchanger and the wall of the flue; the processing water from a desulfurization system or limestone size or the mixture of the processing water and the limestone size are used as washing fluid for washing the walls; and the washing fluid is recovered and reused by returning to the desulfurization absorber after gathering on the bottom of the heat exchanger. By using the integrated system provided by the invention, the temperature of the smoke on the tail part of the boiler can be reduced to 50-70DEG C, thereby recovering the residual heat of boiler smoke and increasing the boiler efficiency. Meanwhile, the smoke within the temperature range which enters into the absorber of the desulfurization system on the tail part still meets the requirement of the temperature for desulfurization reaction, and the water consumption for desulfurization is reduced by 50-80%. Without designing a single size preparation and sewage treatment process, the water-saving and energy-saving properties, the anticorrosion property and reuse of the whole system are finally realized.

The invention provides a resin/silane compounded passivation liquid for galvanized coil steel and a preparation method of the resin/silane compounded passivation liquid, and belongs to the technical field of chrome-free passivation of a galvanized plate. The passivation liquid comprises the following constituents by weight percent: 0.01 to 10 percent of inorganic fluorine-containing acid, 0.01 to 10 percent of organic acid, 0.01 to 5 percent of silane coupling agent, 0.01 to 5 percent of resin, 0.01 to 5 percent of inorganic nano particle, 0.01 to 5 percent of dispersing agent, and water in balancing amount. According to the method provided by the invention, a layer of organic/inorganic composite film can be formed on the surface of the galvanized coil steel, so that the corrosion resistance and the adhesive force are excellent, and the performance is superior to that of a passive film made of a chromizing liquid. The invention has the advantages that the cost is low; the process is simple; the stability is high; the environmental pollution is low; and the economic and the social benefits are higher.

The invention discloses a self-repairing non-phosphorus ceramic processing liquid for galvanized plate and a ceramic process thereof. The processing liquid comprises the following components, by weight: 0.1-8% of inorganic fluorine-bearing acid, 0.01-5% of rare earth compounds, 0.5-5% of a template agent, 0.01-1% of an inorganic sol, 0.01-5% of an interfacial modifier, 0.01-5% of an inhibitor and the balance of water. The ceramic processing liquid provided by the invention can automatically assemble a layer of dense amorphous membrane on the galvanized plate surface through the template agent; breakage position on the membrane has self-repair ability, so that corrosion resistance and adhesion of the galvanized plate are effectively improved, and superior to those of a traditional phosphating film. The invention has the advantages of low cost, simple process, little pollution to the environment, high economic benefit and social benefit.

The invention relates to coating and in particular relates to anticorrosion antistatic coating and a preparation method thereof. Raw materials of the anticorrosion antistatic coating comprise a film forming material, nano metal fibers, chemical antirust pigments, fillers and auxiliaries, wherein metal level of the nano metal fibers is lower than level of steel. The anticorrosion antistatic coating has the beneficial effects that nano zinc oxide fibers are adopted; the defect that nano zinc oxide can be easily agglomerated and is difficult to disperse is overcome; conductive fibers have small diameter and great length-diameter ratio, so that a small amount of conductive fibers can form a conductive network structure in coating, and influence on other properties of the coating can be reduced; and contradiction between static conductivity and corrosion prevention property of the coating in the traditional concept is surmounted, and the paint has two functions, namely corrosion prevention and static conduction.

The invention relates to a spiral nozzle used in controlled rolling and controlled cooling technology and a spiral type water feeding method. A water feeding chamber and a turbulence pipe are matched for use. The spiral nozzle comprises a nozzle body and an adjustable spiral type circular seam which is arranged in the periphery direction of the outer wall of the nozzle body. Cooling media are sprayed into the turbulence pipe in the adjustable spiral type circular seam direction through fixed tangent kinetic energy. Through the adjustable spiral type circular seam, the cooling media enter the turbulence pipe under large pressure in the adjustable spiral type circular seam direction through large tangent kinetic energy. By tangent flowing of the cooling media, heat exchanging speed of the cooling media and high-temperature rolled pieces is greatly improved, steel surfaces and core part grain growth can be effectively avoided, the strength is improved, and meanwhile other performance is obviously improved. Meanwhile, the spiral nozzle is small, energy consumption is lowered, cooling capacity is improved, a corrosion resistant coating layer is sprayed on the surface of the nozzle, and the corrosion resistance of the nozzle is improved.

The invention discloses a high-transmittance high-heat insulation energy-saving explosion-proof membrane and a preparation process thereof. The membrane comprises a substrate layer, wherein a first metal indium layer is magnetron-sputtered on one surface of the substrate layer; a metal silver layer or a metal aluminum layer as a heat insulation layer is magnetron-sputtered the other surface of the first metal indium layer; a second metal indium layer is magnetron-sputtered on the other surface of the metal silver layer or the metal aluminum layer; and the preparation process comprises the following steps: preparing a plastic-based membrane; magnetron-sputtering and depositing the first metal indium layer for oxidation protection on the plastic-based membrane in the step one; magnetron-sputtering and depositing the heat insulation layer on the other surface of the first metal indium layer; and magnetron-sputtering and depositing the second metal indium layer on the other surface of the heat insulation layer in the step three. According to the invention, the high-transmittance high-heat insulation energy-saving explosion-proof membrane is beneficial to reflecting and blocking infrared rays in solar rays and significant in heat insulation effect, and can preferably protect the magnetron-sputtered metal layers, prevent the metals from oxidation, and improve and ensure the performance and service life of products, thereby being applicable to places with higher requirements; and meanwhile, the invention provides the preparation process of the above high-transmittance high-heat insulation energy-saving explosion-proof membrane.

Disclosed is a zinc-plated steel sheet having a coating film formed thereon, in which a multi-layered coating film composed of a non-chromium coating composition is formed on both the front surface and the rear surface thereof, and which has excellent corrosion resistance in a flat area and excellent resistance to white rust in a processed part and an edge part (which is highly visible particularly in the initial stage in use). Specifically disclosed is a zinc-plated steel sheet having a coating film formed thereon, in which a multi-layered coating film is formed on the front surface thereof and a one-layered or multi-layered coating film is formed on the rear surface thereof. In the steel sheet, a coating film composed of a coating composition that comprises a hydroxy-group-containing coating-film-forming resin and contains a predetermined amount of an anti-corrosion pigment is formed on the lowermost layer of at least one of the front and rear surfaces thereof, and a coating film composed of a coating composition that contains a predetermined amount of a silicic acid ion of a metal silicate salt and a metal ion exchange silica, a phosphoric acid group and/or a phosphate salt group of a phosphoric-acid-group-containing coating-film-forming resin and/or a phosphate-salt-group-containing coating-film-forming resin, and/or an azole compound is formed on the uppermost layer of at least one of the front and rear surfaces.

The invention discloses an environmentally-friendly solvent-free anticorrosive graphene coating and a preparation method thereof. The coating of the invention is prepared from, by weight, 30-40 partsof epoxy resin, 15-20 parts of a reactive diluent, 0.15-0.2 part of graphene, 5-10 parts of an assistant, 20-25 parts of iron oxide red, 10-15 parts of mica powder, 0.4-0.8 part of fumed silica, 4-6 parts of barite, 6-10 parts of tripolyphosphate, 0.5-1.5 parts of a silane coupling agent and 7-15 parts of a phenolic amine epoxy resin curing agent. The product of the invention is a solvent-free coating, does not contain volatile organic solvents, has a solid content of 100% and a VOC content of zero, and is green and environmentally friendly; and the super large specific surface area, excellentbarrier property, high chemical stability and good electrical conducting property of the graphene are utilized, so the comprehensive properties of the anticorrosive composite coating are greatly improved.

The invention relates to a under water color alterable high brightness shooting light that belongs to under water shooting light manufacturing field. The reflection shield is installed in the case of the shooting light, and the high brightness light emit source is in the reflection shield. And the computer color vary machine is located on the top of the reflection shield and in the waterproof case of the shooting light. The light translucidus cover is located on the port of the under water waterproof shooting light case and is sealed to the port. The design of the computer color alter machine solves the problem of the color singleness of the under water shooting light and realizes the polychrome of the under water shooting light. And the color would be changed following the music of the computer.

The invention discloses a preparation method for a BOPET (biaxially oriented polyester) high-imitation metal wiredrawing VCM film. The method includes: conducting surface wiredrawing treatment on one side of a transparent BOPET film; coating one surface without surface wiredrawing treatment by a polyurethane UV curable paint, carrying out UV photo-curing and heat curing, and performing natural cooling to obtain a surface hardened coating; coating the surface subjected to surface wiredrawing treatment with a model SC-400 pre-aluminizing prime coat to obtain a fastness enhanced coating; conducting vacuum aluminizing processing on the fastness enhanced coating to obtain a vacuum aluminized layer; and coating the aluminized surface of the vacuum aluminized layer with a model SC-500 topcoat, thus obtaining an antioxidant protective coating. Single-layer BOPET is adopted as a film main material, thus reducing the dosage of a raw material film, saving the production cost, prolonging the product life and improving the tolerance to various adverse conditions. The film obtained by the method has the visual effects of an imitated metal wire drawing board, thus realizing the purpose of high simulation of different material wiredrawing metal boards.

The invention aims to provide a manufacturing method of a corrosion-resistance alloy hot-rolled steel pipe with high acid resistance and excellent comprehensive corrosion resistance. The manufacturing method of the steel pipe comprises the steps of: iron smelting by a blast furnace, predesulfurization of molten steel, converter top-bottom compound blowing, LF furnace refining, continuous casting of a steel pipe blank, heating, perforation, continuous rolling, tension diameter determination, correction, cooling and prewashing; the prewashing is performed for the inner wall of the steel pipe by a corrosion inhibitor; after the corrosion inhibitor is contacted with the inner wall of the steel pipe, a layer of uniform protective film is formed on the inner wall of the steel pipe, so that the corrosion resistance of the inner wall of the steel pipe is improved; sodium gluconate preferably realizes absorption of such metal ions as aluminum and copper in the steel pipe to form ion complex compounds to prevent electrochemical corrosion; the corrosion inhibitor has multiple slow release mechanisms to preferably realize the corrosion resisting effect; and when the pipe conveys crude oil, the corrosion inhibitor has no need to continuously feed, so that the maintenance workload is low.

The present invention provides methods and compounds for the in situ formation in concrete of chloride sequestering compounds that resist corrosion of metals contained within the concrete. These chloride sequestering compounds may include, but are not limited to, compounds having the formula 3CaO.Fe_(2-x)Al_xO₃.Ca(NO₂)₂.nH₂O and 3CaO.Fe(_2-x)Al_xO₃.Ca(NO₃)₂.nH₂O, where x ranges from about 0 to 1.4 and n ranges from about 8 to 24. In one embodiment, at least one Fe-containing additive is introduced into cement, and at least one anion-containing additive is introduced into mixing water. When the cement and mixing water are combined to create fresh concrete, the additives react to form chloride sequestering compounds. In another embodiment, the additives are introduced or mixed directly into fresh concrete that has already been formed, where they react to create chloride-sequestering compounds. “In situ” formation refers to the creation of a chloride sequestering compound within concrete.

The invention discloses an ultra-high molecular weight polyethylene lining pipe. Raw materials including ultra-high molecular weight polyethylene, polypropylene, dicumyl peroxide, allyl siloxane and fillers are proportioned according to formula requirements, the raw materials are crushed and mixed by a mixing type particle crusher, then the grain size of powder materials is determined through a vibrating screen, and finally the proportioned raw materials are extruded to form the lining pipe through a plastic material extruding machine. By adding the dicumyl peroxide, the polypropylene and the allyl siloxane, the raw materials can be better decomposed under heating during injection molding, the flowability of plastic injection can be improved and the impact strength can be improved; by adding needle-shaped siliceous lime, the thermal deformation temperature can be improved; thereby through the combination of the raw materials, the effects of corrosion resistance, wear resistance and high temperature resistance are realized.

The invention discloses spiral coil conduction type raw coke oven gas waste heat recovery equipment. The spiral pipe conduction type raw coke oven gas waste heat recovery equipment comprises an ascending pipe inner barrel, an ascending pipe outer barrel and a heat transfer coil, wherein connecting flanges are arranged at the upper end and the lower end of the ascending pipe inner barrel and the ascending pipe outer barrel, the heat transfer coil is spirally wound on the outer side of the ascending pipe inner barrel, a heat transfer base plate is arranged between the heat transfer coil and theascending pipe inner barrel, the inner wall of the heat transfer base plate is tightly fitted with the outer wall of the ascending pipe inner barrel, the shape of the outer wall of the heat transfer base plate is matched with that of the heat transfer coil spirally wound on the heat transfer base plate, an insulating layer fills between the heat transfer coil and the ascending pipe outer barrel, and a vent nozzle is arranged at the bottom of the ascending pipe outer barrel. Compared with the prior art, the spiral coil conduction type raw coke oven gas waste heat recovery equipment has the beneficial effects that the heat transfer condition between the heat transfer coil and the ascending pipe inner barrel is improved, and the recovery rate of the heat of the raw coke oven gas is increased;the phenomenon that the tar in the raw coke oven gas is condensed on the cold wall is avoided; and the manufacturing cost of the waste heat recovery equipment is reduced.

The invention discloses a BOPET high-simulation metal wire drawing VCM film, a use thereof, and a VCM. The VCM film sequentially comprises a surface hardening coat, a transparent BOPET film with one surface subjected to surface wire drawing treatment, a fastness enhancing coat, a vacuum aluminum coat and an anti-oxidation protection coat; the surface hardening coat is an ultraviolet-curable polyurethane coating layer; the fastness enhancing coat is a polyurethane coating layer, and the above polyurethane coating is a primer with the model of SC-400 before aluminizing; and the anti-oxidation protection coat is a polyurethane coating layer, and the above polyurethane coating a top coating with the model of SC-500. The VCM film adopts single-layer BOPET as a film main material, so the consumption of a raw film is reduced, the production and making cost is saved, the life of a product is prolonged, and the tolerances of various bad conditions are improved. The VCM film has a best visual sense effect of a simulation metal wire drawing plate, and truly realizes the high simulation purpose of wire drawing metal plates of different materials.