379results about How to "Avoid Galvanic Corrosion" patented technology

The invention discloses a high-conductivity non-heat-treatment type moderate-intensity aluminum alloy wire and a production method of the high-conductivity non-heat-treatment type moderate-intensity aluminum alloy wire. The high-conductivity non-heat-treatment type moderate-intensity aluminum alloy wire is produced by finely selecting ingredients and contents of aluminum alloy and conducting process control. The specific steps are as follows: selecting Fe, Si, Mg, Cu and Re with different weight percents, melting aluminum ingot with the content not more than 0.03% in a vertical melting furnace, adding alloying elements in a heat insulation furnace, stirring, refining, conducting on-the-spot contents rapid analysis, carrying out content adjustment, and standing, enabling the aluminum ingot and the alloying element into a continuous casting machine for casting, rolling to be a circular aluminum alloy rod on a continuous rolling machine, pulling the circular aluminum alloy rod to be a circular aluminum alloy wire and twisting the circular aluminum alloy wire to be a conductor for aerial power transmission and distribution. According to the application of the aluminum alloy wire and the production method of the aluminum alloy wire, the aluminum alloy wire directly replaces the generally used aluminum conductor steel reinforced and is an energy-saving, environment-friendly and novel wire.

The invention relates to a non-aqueous coolant for an engine, which is characterized by comprising the following components in percent by weight: 10-80 percent of ethylene glycol, 10-80 percent of propylene glycol, 5-20 percent of polyol, 0.1-0.8 percent of phosphate-molybdate, 0.2-0.9 percent of silicate ester, 0.1-1 percent of 4-methyl 1H-benzotriazole, 0.2-0.8 percent of citric acid, 0.2-1 percent of sebacic acid, 0.1-1 percent of octanoic acid, 0.4-1.2 percent of citrate and 0.01-0.2 percent of cosolvent. The non-aqueous coolant has freezing point of -30--50 DEG C and boiling point of 130-150 DEG C, and ensures that the cold start of the engine is realized in cold weather; meanwhile, the working temperature of the engine is improved to 95-150 DEG C from the original 85-95 DEG C. The non-aqueous coolant belongs to a non-aqueous system, avoids electrochemical corrosion, and is a buffer system with pH of 7.5-9.5; and the added relevant auxiliaries have active corrosion resistance on aluminum and aluminum alloy and copper.

The invention relates to a method for carrying out high velocity oxy-fuel spraying on the surface of a roller of a lithium battery pole piece rolling machine. The method of adding hydrogen into fuel and decreasing the diameter of a combustion chamber is adopted. By means of adding the hydrogen, the heat enthalpy value and the speed of the flame are increased. By means of adding of the hydrogen, tungsten carbide particles can be reduced and protected, and burning losses and decarburization are avoided. To further increase the speed of the flame, the diameter of an outlet of the combustion chamber is decreased by 2 mm-5 mm, the pressure of the combustion chamber is increased, and the speed of the flame is further increased. Due to adding of the hydrogen, burning losses and decarburization of the tungsten carbide particles can be reduced, the heat enthalpy value of the flame is increased, the tungsten carbide particles are heated more evenly, a coating can have higher tenacity and compactness, and the binding force of the coating is improved. By means of the method, the speed of the flame is increased, and the aim of increasing the particle spraying speed is achieved; and tungsten carbide particles at a higher speed impact on a base body, the binding force of the coating and the base body is improved, the inner binding force of the coating is increased by means of subsequent higher-speed particle impact, and therefore the binding force of the whole coating is increased.

The present invention discloses a coupling structure and a coupling method for a coupling piping of an air conditioner, capable of stably coupling a coupling piping made of cheap material such as aluminum metal. The invention includes a coupling piping, one end of which is connected with an outdoor unit and the other end is connected to an indoor unit, to guide refrigerant; a combination member, for combining the coupling piping and the outdoor unit as well as the indoor unit. Moreover, a metallic loop for preventing the refrigerant from leakage is inserted between piping connection portions of at least one of the coupling piping and the outdoor unit as well as the indoor unit, and consolidation is implemented by the combination member.

The invention discloses a bamboo-wood-filled buckling restrained support. The bamboo-wood-filled buckling restrained support comprises a metal core part, a bamboo-wood-fiber filling part and a peripheral restraining part, wherein the bamboo-wood-fiber filling part is positioned between the metal core part and the peripheral restraining part and separates the metal core part and the peripheral restraining part so as to avoid from forming electrochemical corrosion. The bamboo-wood-filled buckling restrained support has the advantages that bamboo-wood fiber is filled between the metal core part and the peripheral restraining part, and the bamboo-wood-fiber filling part is positioned between the metal core part and the peripheral restraining part and separates the metal core part and the peripheral restraining part so as to avoid from forming the electrochemical corrosion; a flat plate and a rectangle and the like can be selected as the section form of the bamboo-wood-fiber part according to the form of the metal core part, and bamboo wood is adopted as a filling material to replace the traditional concrete, so that not only is the mass lighter, but also the recycling is easy, and the requirement for environmental protection is met.

The invention relates to a nickel-plated copper material and a preparation method and application thereof, and belongs to the technical field of battery manufacturing. The nickel-plated copper material sequentially comprises fine copper, a copper-nickel alloy layer, a dull nickel layer and a high-weldability nickel layer from inside to outside. The thickness of the copper-nickel alloy layer ranges from 0.2 micrometer to 0.6 micrometer. The thickness of the dull nickel layer ranges from 0.2 micrometer to 0.6 micrometer. The thickness of the high-weldability nickel layer ranges from 0.6 micrometer to 2.6 micrometers. The preparation method includes the steps that the activated fine copper serves as a base material; firstly, low current is supplied by a pulse power source to electrically deposit the dull nickel layer; then, direct current nickel plating at high current density is conducted in an electrolyte with high-weldability nickel plating additives; and after electroplating is finished, in combination with annealing treatment and dehydrogenation thermal treatment matched with the electroplating process, the nickel-plated copper material which is strong in coating binding force, resistant to corrosion and folding and easy to weld is obtained. When the prepared nickel-plated copper material is used for nickel-plated copper strip electrode tabs of large-magnifying-power lithium ion batteries, the performance of the electrode tabs are far superior to the performance of similar products. The preparation process is simple and controllable, and industrial production is conveniently achieved.

The invention discloses a preparation method for bainite, martensite and austenite complex-phase corrosion-resistant steel. The preparation method is characterized in that a few multi-alloy elements are added to mutually restrain, i.e., a structure range is obtained by widening an upper bainite structure, a thermal treatment way adopts quick-cooling from austenite to a BS point, upper and lower bainite strcutures are obtained by adopting slow-cooling temperature-varying at a medium temperature, and a martensite residual-austenite structure is obtained at equal temperature within a low-temperature range. The whole process is used for continuously producing to obtain wear-resisting steel which consists of upper and lower bainites, martensite and austenite, and the wear-resisting steel resistimpact and cutting abrasion under various environments as well as corrosion. The production process simplifies the process of controlling cooling speed, and facilitates the preparation method for thebainite, martensite and austenite complex-phase corrosion-resistant steel which is simple in large-scale control, is good in quality and is high in wear resistance.

The invention relates to a device for producing hydrogen and oxygen through photoelectrochemistry composite or coupling, and a method thereof, which belongs to the technical field of green renewable energy. The device is characterized by comprising a solar battery at the upper part and a photoelectrochemistry pool at the lower part; the solar battery at the upper part comprises an electrode base plate, a photo-anode, electrolyte and a counter electrode; the solar battery at the upper part is a silicon solar battery, a dye-sensitized solar battery, an organic solar battery, a chemical compound semi-conductor solar battery or a polymer solar battery and the like; the photoelectrochemistry pool at the lower part comprises a photo-anode, electrolyte and a counter electrode. During use, under the irradiation of sunlight or simulated sunlight, the solar battery at the upper part discharges and generates external bias voltage, and the photo-anode of the photoelectrochemistry pool generates potential or energy. The external bias voltage and the potential or energy generated by the photo-anode of the photoelectrochemistry pool reach the schizolysis energy of water in the photoelectrochemistry pool, and the electrodes respectively generate hydrogen and oxygen. The device is characterized by high conversion efficiency of solar energy and hydrogen energy, low cost, simple process, and easy mass production of hydrogen.

Composite bearings and methods of making composite bearings are provided in which a bushing comprising polytetrafluoroethylene fibers and a second fibrous material is disposed within a polymeric matrix comprising polytetrafluoroethylene particles and a wetting agent. Since graphite can be corrosive to carbon steel, the composite bearing can be used in hydroelectric applications where self-lubricating bearings containing graphite are undesirable.

The invention relates to a kind of corrosion-resistant and erosion resistant coating material, which in detail is a corrosion-resistant material for cable bridge surface. The invention adds flaky zinc powder concentration for traditional dacromet coating formulation, adds penetrating agent, surface active agent, hardening agent and rare earth material. The coating layer on the surface is characterized by high adhesion power, good wearing resistant performance, good antiweatherability and stable chemically-resistant property, and suitability for wild environment utilization for a long time, which as long as 30 years.

The invention relates to a power transmission bus and a bus assembly thereof. The power transmission bus comprises an aluminum strip and two copper-aluminum connecting components, wherein each copper-aluminum connecting component comprises a copper plate and a cast aluminum plate obtained by casting the copper plate as an embedded component; and one end of the cast aluminum plate and the aluminumstrip are welded together so that the two copper-aluminum connecting components are respectively positioned at both ends of the aluminum strip. The bus assembly for power transmission comprises threeto four buses, a square pipe and two seal blocks, wherein three to four buses are vertically arranged along the left direction and the right direction; rectangular holes matched with the copper-aluminum connecting components are arranged on the two seal blocks, and the two seal blocks are respectively sleeved outside the corresponding copper-aluminum connecting components and inserted at the leftend and the right end of the square pipe; the inner walls of the seal blocks are connected with the copper-aluminum contact position in a seal way, and the outer walls are connected with the inner wall of the square pipe in the seal way. The invention has favorable conductive performance, high reliability and long service life and can form a power line for transmitting low-voltage high-current ata long distance.

The invention provides a high-stability OLED device and a preparation method thereof. The high-stability OLED device comprises a substrate and a packaging cover plate 10, wherein the substrate is divided into a pixel region and a packaging region; the substrate and the packaging cover plate are connected through a sealing medium; a first electrode layer, an organic light-emitting layer and a second electrode layer are overlapped on the pixel region on the substrate; and a buffer layer is arranged between the first electrode layer and the substrate. Through the arrangement of the buffer layer,the lateral erosion phenomenon caused by dry etching of the auxiliary electrode layer is solved, and meanwhile, metal ions of the glass substrate are blocked from permeating into the first electrode layer, and electrochemical corrosion is avoided; by adding the auxiliary electrode, the brightness uniformity of a screen body is improved; a pixel defining layer is simultaneously arranged on the first electrode layer and the auxiliary electrode layer and is in direct contact with the buffer layer, so that a very good surrounding structure is formed for an effective pixel region and/or pixels of the OLED, volatile gas outgas is prevented from being released into the pixels to cause pixel shrinkage, and the reliability of the screen body of the OLED is improved.

The invention discloses an optical fiber sensor combination for monitoring the corrosion of reinforced concrete. The optical fiber sensor combination comprises an optical fiber sensor and a compensation sensor, wherein the optical fiber sensor and the compensation sensor comprise reinforcing steel bar elements, reinforced fiber glass reinforced plastic support bases, optical fiber Bragg gratings and connecting optical fibers, protective sleeves, silicon sheets, reinforcing steel bar coating regions, reinforcing steel bar un-coating regions, and mortar housings, wherein the reinforcing steel bar elements of the optical fiber sensors are reinforcing steel bars to be tested, and the reinforcing steel bars of the compensation sensor are 316L stainless steel bars. According to the optical fiber sensor combination, a reaction force of mortar is counteracted to a certain extent, the local corrosion of the reinforcing steel bars is favorably monitored, and the sensitivity of monitoring is improved. The compensation sensor is made by adopting a manner of replacing common reinforcing steel bars by 316L stainless steel, and is simple in principle and convenient to operate. The optical fiber sensor combination is simple in structure, convenient to manufacture, low in cost, good in sensitivity, high in accuracy, strong in anti-electromagnetic interference, high in reliability, good in durability, and high in stability, and is suitable for monitoring the long-term durability of reinforcing steel concrete structures such as saline and alkaline land, seawater and deicing salt under multiple environments.

The invention discloses an explosion-proof device of a power battery, which can be arranged on an explosion-proof hole of a battery cover board or a battery shell. The explosion-proof device comprises an insulated and sealed battery cover board or an explosion-proof board of the explosion-proof hole of the battery shell, a tension board and an explosion-proof cover, wherein the tension board is connected to the explosion-proof board by welding points and is provided with at least one venthole; and the explosion-proof cover is fixed on the battery cover board or the battery shell to compress the explosion-proof board and press the edge of the tension board. In the explosion-proof device of the power battery, the tension board is fixedly welded on the explosion-proof board to form a whole, the structure of the whole explosion-proof device is smoother, and the explosion-proof board is torn by the welding-point separation action of the tension board and the explosion-proof board in order to avoid the false action of the explosion-proof board and ensure the consistency of bursting pressure.

The invention relates to a bipolar plate for flow batteries, belonging to the field of flow batteries. The bipolar plate is divided into an electrode zone and a non-electrode zone, wherein the electrode zone is a zone where the flow battery bipolar plate contacts the adjacent electrodes on the two sides, and the rest is the non-electrode zone; the non-electrode zone is divided into a flow channel zone and a non-flow channel zone; the flow channel zone is a zone where the non-electrode zone contacts flow-channel-bearing frames of the adjacent electrode frames on the two sides, and the rest of non-electrode zone is the non-flow channel zone; and the flow channel zone is an anti-corrosion insulation zone. The flow channel zone of the bipolar plate is the anti-corrosion insulation zone, and the bipolar plate flow channel zone in contact with the flow channel zone of the electrode frame is set as the anti-corrosion insulation zone so as to achieve the goal of preventing electrochemical corrosion, thereby prolonging the service life of the bipolar plate and ensuring the stable operation of the flow battery.

The invention discloses an expansion joint for a conductive rail. The expansion joint for the conductive rail comprises a left conductive rail, a middle rail and a right conductive rail, wherein the right end face of the left conductive rail, the two end faces of the middle rail and the left end face of the right conductive rail are mutually-parallel inclined planes; the expansion joint further comprises a conductive plate and wires; the conductive plate is provided with a boss part fixedly connected to the bottom surface of the middle rail; the left end and the right end of the conductive plate are suspended; the wires consist of a left wire and a right wire; one end of the left wire is connected to the bottom surface of the left conductive rail, and the other end is connected to the suspended left end of the conductive plate; one end of the right wire is connected to the bottom of the right conductive rail, and the other end is connected to the suspended right end of the conductive plate; the wires keep in a relax state after being connected; and the expansion joint further comprises a copper-aluminum transition plate. The expansion joint provided by the invention has a simple structure, is excellent in pickproof and shock-resistant performance, can effectively ensure requirements of follow current and current carrying on the expansion joint, and can ensure constant and reliable current capacity.