461results about How to "Avoid corrosion damage" patented technology

A method is provided for enhancing corrosion resistance of a metal surface that includes the step of forming a sol-gel coating in which nanostructured zinc phosphate (Zn₃(PO₄)₂) and zinc oxide (ZnO) phases are present in the mixture. The method may include the steps of mixing an organosilane, organometallic, organic acid, water, and alcohol and allowing the components of the mixture to partially hydrolyze, followed by adding at least one component having zinc functionality and at least one component having phosphate functionality to the partially hydrolyzed mixture, wherein the zinc component and phosphate component are added in a molar ratio of from about 1.5:1 to about 5:1 (Zn:PO₄). The resulting mixture can be applied as a coating to a metal surface to improve the corrosion resistance of the metal and to enhance the adhesion of resinous materials to the metal surface.

The invention provides a method for manufacturing a metal surface self-cleaning high-protection film. The method comprises two steps of molybdate solution soaking treatment and plant corrosion inhibitor-low-surface-energy material collaborative modification treatment. According to the molybdate solution soaking treatment step, a composite film which is of a specific micro/nano coarse structure, has the good protection effect and is composed of metallic oxides, molybdenum oxide and metal molybdate can be formed on a metal surface, and therefore according to the plant corrosion inhibitor-low-surface-energy material collaborative modification treatment step, efficient green plant corrosion inhibitors can be introduced into the film, and the protection effect can be obviously improved. Due to the hydrophobization effect of the low-surface-energy material on the film, the film has the self-cleaning function, the pollution can be avoided, the probability of direct contact of metal materials and corrosive media can be reduced, and the protection effect of the film can be further improved. The method has the advantages of being environmentally friendly, simple in process, convenient to operate, capable of being easily and industrially produced in a large-scale mode and the like.

A method for observing microscopic structure of stainless steel includes using alcohol, perchloric acid and so on to prepare electrolytic polishing liquid; polishing prepared test piece; using electrolytic polisher with 23v-40 voltage and 10-30deg.c electrolytic polishing liquid to carry out electrolytic polishing on test piece then washing test piece; placing electrolytic polished test piece into sample chamber of scan electronic microscope and using back scattering electronic detector to observe microstructure of test piece.

Disclosed herein is a method and treatment system for rapid cleaning and protecting of automotive cooling systems containing controlled atmosphere brazed aluminum heat exchangers. The method and treatment system can optionally include a conditioning (passivating) step. The treatment system can comprise three different parts: (1) cleaner or cleaning solution; (2) conditioner or conditioning solution; and (3) compatible CAB aluminum protective heat transfer fluid.

The invention discloses a low-temperature plane waterproof heating floor module, which comprises an external decorating waterproof surface layer, a heating base material layer and an external decorating waterproof bottom layer which are sequentially overlapped and stuck, wherein the heating base material layer consists of an upper base material layer, a heating layer and a lower base material layer which are sequentially stuck; the heating layer is carbon fiber conducting paper; a pair of electrodes is arranged on the carbon fiber conducting paper; and a pair of conducting holes corresponding to the electrodes is respectively arranged on the lower base material layer and the external decorating waterproof bottom layer. According to the low-temperature plane waterproof heating floor module and a manufacturing method thereof disclosed by the invention, a heating element of the heating floor is subjected to sealing insulated treatment by using tailored epoxy resin, a polyvinyl chloride plastic board and other materials, and thereby corrosive damage of an outside material to the heating element is avoided and durable and safe use of the low-temperature plane waterproof heating floor module disclosed by the invention is ensured.

A fan with pressurizing structure includes a rotor having a main body, blades spaced on the main body, a magnetic body annularly mounted in the main body, and a shaft axially connected to an inner side of the main body; a frame having a sleeve and at least one bearing rotatably received in the sleeve, and an opposing end of the shaft being inserted into the bearing; a stator assembly fitted around the sleeve and including silicon steel plates and a base plate; and a plurality of first pressurizing sections selectively provided on one of the base plate and an end face of the magnetic body. With the first pressurizing sections, deposition of moisture and salt fog in the sleeve and the rotor can be prevented to avoid corroded and damaged bearing and rotor shaft, and the service life of the whole fan is increased.

The invention discloses a carbon-silicon carbide double-ingredient substrate carbon fiber composite material as well as a preparation method and application thereof. The method comprises the followingsteps of (1) performing weaving and high-temperature heat treatment on a carbon fiber prefabricated body; (2) preparing a porous carbon/carbon blank body; (3) introducing carbon elements and siliconelements into the carbon/carbon blank body in an impregnating mode; after the soaking and pyrolysis circulation period, obtaining a Cf/Cm-Sim porous intermediate; (4) performing embedded fusion Si seeping on the Cf/Cm-Sim porous intermediate to obtain a Cf/Cm-SiCm composite material. The inside SiC distribution of the composite is uniform; the residue Si content is 1.2 to 3.3 percent; the bendingintensity is 236 to 275MPa; the compression intensity is 322 to 364MPa; the dynamic friction coefficient is 0.32 to 0.48; the mechanical/friction performance is excellent; the thermal stability and the environment applicability are high; the material is applicable to the manufacturing of automobile braking discs/sheets.

The invention discloses a tire rubber sheet electron radiation crosslinking pretreatment device and a tire rubber sheet electron radiation crosslinking pretreatment method. A conveyor belt used for realizing an arc-shaped conveying track is arranged in a shielding room; based on the ray absorption by the interior wall of the shielding room, the ratio of attenuation generated by multiple times of refraction is increased by increasing the reflection times of rays, and thus, the rays can be absorbed to a maximum degree and the ray leakage can be reduced so as not to pollute the environment and hurt the body the operators. The device mainly comprises a radiation room, the shielding room and the conveyor belt for conveying rubber sheets, wherein an electron accelerator is arranged in the radiation room and above the conveyor belt, and the conveyor belt runs through the radiation room and the shielding room. Ray absorbing plates are adhered on all of the inner walls of the radiation room and the shielding room. The conveyor belt comprises a horizontal conveying part arranged in the radiation room and below the electron accelerator and an oblique conveying part arranged in the shielding room. The oblique conveying part has at least one group of left and right symmetric and vertically bent continuous conveying section.

The invention relates to a wear-resistant and corrosion-resistant waterproof coating for environmental protection equipment. The wear-resistant and corrosion-resistant waterproof coating has the advantages of having good acid and alkali corrosion resistance, oil and water resistance, scratch resistance and wear resistance, effectively avoiding the corrosion damage on the outer surface of the equipment, reducing the frictional damage, and prolonging the service life of the equipment; modified graphene has the advantages of having better dispersibility, increasing the density and strength of thecoating, and effectively improving the waterproof performance of the coating and the permeability of a solvent; modified attapulgite has the advantages of having better viscosity, dispersibility andcompatibility, improving the adhesion between various components, and increasing the adhesion and anti-stripping performance of a paint; tourmaline powder, medical stone, far-infrared ceramics and other functional accessories are added to enhance the functionality of the coating, and benefit the human health; reflective glass beads are used to enhance the recognition capability of operators; a preparation method is simple in process, and low in energy consumption and cost.

The invention discloses a deplating method for a carbon-based thin film on the surface of a metal workpiece. Oily pollutants on the surface of the steel-substrate workpiece are removed firstly; then the pretreated workpiece is fixed to a workpiece rack in a vacuum chamber of a vacuum coating system containing a hollow cathode ion source, a gas inlet pipeline for guiding in working gas is mounted, and oxygen plasma is obtained when oxygen is led in; and the surface of the sample is bombarded by the oxygen plasma generated by the ion source, and then the workpiece separated from the carbon-based coating is soaked in a faintly-acid soak solution and then cleanly rinsed. The carbon-based coating can be completely stripped off in the oxygen plasma bombarding process, and the stripping speed can reach 0.5-1.0 micron/h; due to oxidation protection in the carbon-based surface layer stripping process, the positions where the coating is abraded or stripped are protected, and excessive etching of the positions cannot be caused by the proper oxygen ion density and energy.

A bidirectional rechargeable/replaceable induction power pack and method employing sealed induction coils to power an electrical device underwater, in liquids, or in high humidity conditions.

The invention provides a moistureproof underground cable protection device, and belongs to the technical field of a cable. The device comprises a moistureproof underground cable and a protection sleeve. The moistureproof underground cable comprises a cable body. The cable body comprises conduction cores, an insulation layer I, a lining layer, a first waterproof layer, a metal sheath, a second waterproof layer and a jacket layer, from the inside to the outside. There are multiple conduction cores. An insulation layer II is wrapped out of the conduction cores. Cross-linking polyolefin is filled among the conduction cores. Carbon fibers are doped in the cross-linking polyolefin. The protection sleeve is sleeved out of the moistureproof underground cable. The protection sleeve comprises a protection sleeve body. The shape of the protection sleeve body matches the shape of the moistureproof underground cable. The inner surface of the protection sleeve body is a structure that concave surfaces and convex surfaces are alternated. An anticorrosive material is coated on the inner surface. According to the device, the structure of an existing underground cable protection device is improved and optimized; the comprehensive performance of the cable is improved; in particular, the corrosion resistance is remarkably improved; and the waterproof performance is excellent; and the stability is high.

A method treats a flow gas that is guided via a catalytic adsorber module to oxidize contaminants carried in the flow gas. The method reliably purifies the flow gas using equipment that is held to a comparatively low level of complexity. To this end, the flow gas is guided in a first purification step via a first catalytic adsorber module to oxidize contaminants carried along therewith, during which molecular or atomic oxygen is added to the flow gas, and the flow gas mixed with the added oxygen is guided in a second purification step via an oxidation catalyst. The flow gas flowing away from the oxidation catalyst is guided in a third purification step via a second catalytic adsorber module to reduce excessive oxygen.

The invention discloses a rotary screen printing machine with a liftable roller device. The rotary screen printing machine comprises a long strip groove formed below a rotary screen and a printing belt, wherein the outer sides of the two ends, in the lengthwise direction, of the long strip groove are fixedly connected with a fixing frame; the fixing frame is fixed to side plates on the two sides; supporting plates are also fixed to the side plates on the two sides and fixed with drive motors respectively; an output shaft of each drive motor is inserted into and sleeves in a jack formed in the corresponding supporting plate and is fixed with a vertical regulation rod through a coupler; the lower end of each vertical regulation rod and the corresponding coupler are arranged in the corresponding jack; each vertical regulation rod is inserted into and sleeves in a regulation sleeve; each regulation sleeve is inserted into and sleeves in a through hole formed in a top plate of a bench; and the top end of each vertical regulation rod extends out of the corresponding regulation sleeve and is in threaded connection to a connecting block. The rotary screen printing machine can regulate a roller of a printing machine up and down, and thus the roller presses against cloth to carry out printing, and the printing effect is good.

The invention discloses a repairing and changing method of a full rotation steering oar device. The repairing and changing method includes: demounting a drive assembly which and the full rotation steering oar device are arranged together; sealing a gap on an input shaft of the full rotation steering oar device; arranging cables on the full rotation steering oar device; demounting the full rotationsteering oar from a ship enclosure well, and hoisting the full rotation steering oar device out of water through the cables; performing repairing and changing on the full rotation steering oar device; sealing the gap on the input shaft of the full rotation steering oar device; hoisting the full rotation steering oar device into water through the cables, and mounting the full rotation ship steering oar device onto the ship closed well; demounting the seal on the input shaft of the full rotation steering oar device; and mounting the drive assembly and the full rotation steering oar together. The repairing and changing method can effectively prevent huge economic loss due to the damaged full rotation steering oar device during ship dockage, can shorten the maintenance period, can reduce themaintenance cost, and can improve the maintainability of the device.

A filter installation and method, especially a seawater filter installation and method, includes at least one fluid line (18,20) for transporting a biological fluid, a filter device (54) mounted in the fluid line with at least one filter element (22) in a filter housing (10), and a device for biological decontamination. The device for biological decontamination contains active substances that can be introduced into the filter housing (10), such as inert gases or special metals, ensuring that toxic impurities cannot enter. The active substances used are ecofriendly unlike chemically produced fungicides and herbicides.

The invention discloses a scraping-rolling machine boring rod spiral sealing mechanism and a scraping-rolling machine, wherein the scraping-rolling machine boring rod spiral sealing mechanism comprises a flange plate, a reciprocating sealing piece and a rotary sealing piece; the outer edge of the flange plate is fixedly connected with a wall plate at an opening part of an oil receiver, so that the flange plate covers the opening part; an installation hole is arranged in the middle of the flange plate, and a boring rod is arranged in the installation hole in a penetrating way; the reciprocating sealing piece is arranged between the inner wall of the installation hole and the boring rod; and the rotary sealing piece is sheathed on the boring rod and is clung to the end surface of the flange plate, close to a boring rod box. The scraping-rolling machine boring rod spiral sealing mechanism and the scraping-rolling machine can realize the rotary sealing and the reciprocating sealing of the boring rod simultaneously, and are simple in structure and stable in performance.

The invention discloses a horizontal spiral cement cooler, which comprises a support. A horizontal barrel is arranged on the support; a hollow shaft is rotatably arranged in the barrel; a hollow spiral blade which is communicated with the hollow shaft is arranged on an outer circumferential surface of the hollow shaft; a plurality of spray pipes are arranged above the barrel; and a cooling water tank capable of soaking the barrel is arranged under the barrel. The horizontal spiral cement cooler has the advantages of simple structure, reliable operation, good cooling effect, simple and convenient maintenance and operation, low operation and manufacturing cost, and the like, and can be used for cooling powdery high-temperature materials in various industries.

The invention discloses an anti-blocking evaporation sedimentation chamber producing clean secondary steam. The evaporation sedimentation chamber comprises a steam collection chamber, an evaporation chamber, and a sedimentation chamber, which are sequentially arranged from top to bottom and which communicate with each other. A steam discharge port is provided on the top of the steam collection chamber. A feeding port is provided on a side wall of the evaporation chamber. A crystallization liquid discharge port is provided on the bottom of the sedimentation chamber. A material liquid discharge port is provided on a side wall of the sedimentation chamber. A de-foaming device is arranged on the steam collection chamber. A circulation liquid feeding port is arranged on the bottom of the sedimentation chamber. The position of the circulation liquid feeding port is lower than that of the crystallization liquid discharge port. According to the invention, the evaporation device and the sedimentation device are realized in a same device, such that land occupation is low, and equipment investment is saved. When adopted material liquid is discharged from the material liquid discharge port, one part of the material liquid is pumped from the circulation liquid feeding port back to the sedimentation chamber by using a liquid pump, such that solid-liquid mixture in the sedimentation chamber form circulation flow, and crystallization liquid discharge port is effectively prevented from being blocked by solid precipitate. Therefore, device normal operation is ensured.

The invention discloses a glass incrustation cleanser and a preparing method thereof. The glass incrustation cleanser is prepared from, by weight, 0.5-10 parts of surfactant, 0.5-15 parts of fluoride, 10-30 parts of weak acid, 1-3 parts of sodium acrylate homopolymer, 1-10 parts of borax, 5-20 parts of solvent and 40-70 parts of softened water. The glass incrustation cleanser is prepared through the following method including the steps that the softened water at the temperature of 40-50 DEG C is added into a container, fluoride and borax are added into the container, and after fluoride and borax are completely dissolved, weak acid is added and stirred until the solution is transparent; the surfactant and the sodium acrylate homopolymer are sequentially added into the container and stirred until the sodium acrylate homopolymer is completely dissolved to obtain a solution a; after the temperature of the solution a is lower than 40 DEG C, the solvent is added and stirred uniformly to obtain the solution b; the solution b stands to precipitates impurities, and finally impurities in the solution b are filtered out. The cleanser can completely clear incrustation on glass or other hard surfaces, and no water drops exist on the surface of the glass after cleaning.