214results about How to "Avoid oxidation reactions" patented technology

The invention discloses an organized zirconium phosphate modifier based on waste plastic derivatives, an anti-aging asphalt-based material and a preparation method of the organized zirconium phosphate modifier and the anti-aging asphalt-based material, and belongs to the field of preparation of building materials.The organized zirconium phosphate modifier based on the waste plastic derivatives is added into asphalt, and the organized zirconium phosphate modifier has a layered structure, so that the anti-aging asphalt-based material is prepared; ultraviolet rays can be effectively absorbed, and the ultraviolet aging resistance of the asphalt is greatly improved. In addition, a large number of active sites also exist on the surface of zirconium phosphate, the effect of capturing free radicals can be achieved, the free radicals are prevented from participating in the oxidation reaction, and therefore a certain anti-oxidation function is achieved.

The invention discloses a gel electrolyte raw material high-temperature mixing device, and relates to the technical field of stirring and mixing, the gel electrolyte raw material high-temperature mixing device comprises a base, the base is fixedly connected with a stirring barrel, the stirring barrel is fixedly connected with a cover plate, the inner bottom of the stirring barrel is fixedly connected with a ring-shaped heating plate, the stirring barrel is internally fixedly connected with a conversion cylinder, and the conversion cylinder is fixedly connected with the cover plate. Through holes which are evenly distributed in the circumferential direction are formed in the side, close to the heating plate, of the conversion cylinder. On the basis of stirring and mixing of the first stirring blades, raw materials flow up and down and are mixed through the spiral conveying frame, the uniform mixing degree of the raw materials is enhanced, the raw materials flow to the low-temperature area through the high-temperature area, the raw materials are integrally and synchronously heated, and local overheating caused by uneven heating is avoided; therefore, thermal decomposition or chemical reaction initiation of some raw materials is avoided, harmful by-products are prevented from being generated, the chemical stability and electrochemical performance of the electrolyte are prevented from being influenced, meanwhile, the phenomena of phase separation and inconsistent viscosity change caused by temperature difference are avoided, and the formation of a non-uniform mixture is avoided.

The invention relates to a flame-retardant rubber and plastic thermal insulation material and a preparation method thereof, and belongs to the technical field of high polymer materials. The flame-retardant rubber-plastic thermal insulation material comprises the following components in parts by weight: 50-75 parts of nitrile rubber, 20-45 parts of PVC resin, 10-15 parts of a plasticizer, 1-10 parts of a foaming agent, 1-5 parts of a foaming promoter, 10-40 parts of a composite flame retardant and 2-6 parts of a modified anti-aging agent, cyclohexanehexol phosphate in the composite flame retardant is heated and dehydrated into phosphoric acid, a barrier layer is formed to inhibit release of combustible materials, and dimethylallylamine combusts to absorb heat and cooperates with phosphorus-oxygen double bonds for flame retardance; a pre-product in the modified anti-aging agent reacts with a free radical of a rubber molecular chain, so that the heat resistance and the aging resistance of the material are improved, a maleimide group enhances an intermolecular acting force, the rigidity and the heat resistance of the molecular chain are improved, and material aging caused by high temperature is reduced; the flame-retardant rubber and plastic thermal insulation material prepared by the invention not only has an excellent anti-aging effect, but also has good flame retardance.

The present invention relates to a weather-resistant and anti-aging polyethylene pipeline and a preparation method thereof, and belongs to the technical field of polymer materials. The pipeline adopts high-density polyethylene resin, linear low-density polyethylene resin, polyimide resin powder, nano silicon dioxide, nano hexagonal boron nitride, polybenzimidazole fiber, carnosic acid, zinc glycyrrhetinate, antioxidant 1010, hindered amine light stabilizer, polydimethylsiloxane titanate cross-linked polymer, 3-methacryloxypropyl triethoxysilane as raw materials; wherein, polyimide resin powder, carnosic acid and zinc glycyrrhetinate are uniformly mixed, and then modified at 300°C to 350°C for 30min to 60min to obtain a modified product, which can better improve the weather resistance and aging resistance of the pipeline. Each component is compatible with each other, and a special modified preparation method is adopted to better play the synergistic effect of the components, and greatly improve the weather resistance and aging resistance of the polyethylene pipeline.

The invention discloses silver-coated copper powder and a preparation method thereof, conductive paste and a printing type RFID tag, and relates to the field of conductive paste. The silver-coated copper powder comprises a copper core and a silver shell layer coated on the surface of the copper core, the surface of the copper core is provided with bare copper defect sites which are not coated by the silver shell layer, and the bare copper defect sites are provided with mercaptopropionic acid self-assembly molecular layers. According to the silver-coated copper powder, mercaptopropionic acid molecules form a compact self-assembly monomolecular layer on the copper surface which is not coated with a silver shell, so that bare copper defect sites are isolated from external air and water, copper oxidation is prevented, the stability of conductive paste based on the silver-coated copper powder and a printing type RFID tag is improved, and the service life of the RFID tag is prolonged.

The invention belongs to the technical field of coatings, and discloses a single-component waterborne epoxy dip-coating coating for a finned radiator. A YBEP-405E single-component waterborne epoxy emulsion is used as a main film-forming substance, and a carbon nanotube modified fullerene ceramic heat-conducting material, an anticorrosive pigment, a pigment filler, a self-made defoaming and foam-inhibiting agent, an auxiliary agent and the like are added to prepare the single-component waterborne epoxy dip-coating paint for the finned radiator. The carbon nano tube modified fullerene ceramic heat conduction material is matched with the anti-corrosion pigment, so that the heat conductivity and the salt fog resistance of the coating are improved, and the self-made defoaming foam inhibitor eliminates the problem that the coating continuously generates bubbles in construction engineering. The single-component waterborne epoxy dip-coating paint for the finned radiator solves the technical problems of thermal conductivity, corrosion resistance and no bubble in construction of the single-component waterborne epoxy dip-coating paint for the finned radiator in the prior art.

The invention discloses a process for processing a corrosion-resistant aluminum alloy pipe through laser cladding, which comprises the following steps of: performing laser cladding on a formed aluminum alloy pipe, transmitting a laser beam to the surface of the aluminum alloy pipe, conveying cladding layer powder / alloy wires to a laser area, quickly melting the cladding layer powder / alloy wires and the surface of the aluminum alloy pipe together through the laser beam, and solidifying, thereby obtaining the corrosion-resistant aluminum alloy pipe. The cladding layer combined with the aluminum alloy pipe is formed on the surface of the aluminum alloy pipe, cladding layer powder / alloy wires are made of zinc or zinc alloy, the cladding layer serves as a sacrificial anode, a thin and compact oxide and hydroxide layer is formed on the surface of the aluminum alloy pipe, further oxidation reaction is effectively prevented, and the corrosion resistance and reliability of the aluminum alloy pipe are improved. And the laser cladding procedure can be accurately controlled by controlling the laser power of the laser beam, the spot diameter, the passing speed of the aluminum alloy pipe and the speed of conveying cladding layer powder / alloy wires, so that the cladding layer has the advantages of being small in dilution degree, compact in structure, good in combination with the aluminum alloy pipe and not prone to falling off.

The invention discloses environment-friendly high-temperature-resistant polyester polypropylene fiber spinning oil and a preparation method thereof, and the environment-friendly high-temperature-resistant polyester polypropylene fiber spinning oil comprises the following raw materials in parts by weight: 40-55 parts of mixed modified silicone oil, 4-9 parts of coconut oil, 1-3 parts of an emulsifying dispersant, 2-4 parts of a bundling agent and 0.5-2 parts of a function regulator, the mixed modified silicone oil comprises carboxyl modified silicone oil, phenolic hydroxyl modified silicone oil and amino modified silicone oil, the function regulator comprises an antioxidant, an antibacterial agent and a PH regulator, and the antioxidant is modified oil-soluble tea polyphenol. The oxidation resistance and heat resistance of the spinning oil agent are improved by adding the modified oil-soluble tea polyphenol, and the heat resistance of the spinning oil agent is very good by mixing and compounding the amino modified silicone oil and the phenolic hydroxyl modified silicone oil; the durability can be improved when carboxyl modified silicone oil and amino silicone oil are mixed and compounded for fiber treatment.

The utility model discloses a molten aluminum launder nitrogen protection cover plate which comprises a cover body arranged corresponding to the top of a molten aluminum launder, the cover body is connected with a nitrogen pipeline arranged towards the inside of the molten aluminum launder, and the nitrogen pipeline is communicated with a nitrogen source and used for supplying nitrogen to the inside of the molten aluminum launder. When molten aluminum is transferred, nitrogen is continuously introduced into the molten aluminum launder through the nitrogen pipeline and gradually fills a closed space defined by the molten aluminum launder and the cover body, air in the molten aluminum launder is emptied, a nitrogen protection layer is formed on the surface of the molten aluminum, oxygen in the air is prevented from being subjected to oxidation reaction with the molten aluminum, and the molten aluminum is prevented from being oxidized. The production of oxides such as aluminum slag is effectively reduced, the burning loss and waste conditions are improved, and the increase of the production cost is inhibited; due to the arrangement of the lap joint matching structures, the adjacent cover plates can be connected in an end-to-end matching mode through the lap joint matching structures, open gaps between the adjacent cover plates are eliminated, the sealing performance of the cover plates is improved, nitrogen consumption is reduced, and the heat preservation performance of the molten aluminum launder is improved.

The invention discloses application and a method of phytic acid compounds in inhibition of anode chlorine evolution reaction through seawater electrolysis. The phytic acid compound can be applied to electrolyte for seawater electrolysis to inhibit anode chlorine evolution reaction, the electrolyte is an aqueous solution containing chloride ions, and the electrolyte further comprises the phytic acid compound. The method comprises the following steps: electrifying an electrochemical reaction system comprising a cathode, an anode and an electrolyte for electrolysis so as to obtain hydrogen at the cathode and oxygen at the anode; the electrolyte is an aqueous solution containing chloride ions, and the electrolyte further comprises a phytic acid compound. When the phytic acid compound is used for seawater electrolysis, adsorption and oxidation of chloride ions on an anode can be remarkably improved, the chlorine evolution reaction of the anode can be effectively inhibited, the anode is protected from being corroded, and the seawater electrolysis efficiency is improved; and the phytic acid compound is derived from biomass, is low in price and is easy to popularize and apply.

The present invention discloses an anti-aging functional peptide composition and a preparation method thereof, and relates to the technical field of food health care. The anti-aging functional peptide composition comprises the following components by weight: 1-10 parts of ascorbic acid polypeptide, 10-30 parts of calcium peptide chelate, 1-10 parts of medicinal fasciculus polysaccharide, 10-20 parts of plant extract, 1-10 parts of bird's nest extract, 1-5 parts of sea cucumber peptide, 1-5 parts of chlorella active peptide, 1-10 parts of auxiliary materials and 15-45 parts of water. The present invention adopts the above-mentioned anti-aging functional peptide composition and a preparation method thereof, in which the calcium peptide chelate and the medicinal fasciculus polysaccharide in the anti-aging functional peptide composition cooperate with each other, and are supplemented with other extracts, and multiple components cooperate with each other to effectively remove free radicals, thereby delaying aging.

The invention discloses a low-temperature storage and preservation method for litchis. The method comprises the following steps of: removing branches and leaves of fresh litchis which are 80-90% mature, and reserving bare litchis; the fruits pass through a sorting line, and defective fruits are picked out; and soaking the lychee in an ergothioneine and mannitol solution, draining water, packaging the lychee with a moisture-permeable and air-permeable functional fresh-keeping bag, and storing the lychee at the temperature of-1 DEG C to 5 DEG C. According to the fresh-keeping method combining ergothioneine, mannitol and a moisture-permeable and air-permeable functional fresh-keeping bag, the fresh-keeping period of the litchis can be effectively prolonged through natural oxidation resistance and hydration and by matching with humidity adjustment and gas exchange, and the flavor, texture and nutritional ingredients of the litchis are kept. The method not only meets green and environment-friendly requirements, but also can remarkably reduce loss of litchis in transportation and storage, reduce food waste and improve food safety, and is an advanced and efficient fruit fresh-keeping technology.

The invention relates to the technical field of bio-based polyester synthesis, in particular to a preparation method of poly (ethylene 2, 5-furandicarboxylate). Comprising the following steps: purification of 2, 5-furandicarboxylic acid: purifying the 2, 5-furandicarboxylic acid by sequentially adopting activated carbon, dealdehyding resin and a modified adsorbent, so that the content of acyl furoic acid, furoic acid and aldehyde impurities can be effectively reduced, side reactions are reduced, and the chroma of a finished product is reduced. Adding the purified 2, 5-furandicarboxylic acid, ethylene glycol, a composite catalyst and a composite stabilizer into a reaction container, and carrying out esterification reaction and polycondensation reaction to obtain 2, 5-furandicarboxylic acid glycol ester; a mixture of aluminum acetylacetonate, antimony triphenyl diacetate and zinc acetate is used as a catalyst of poly (ethylene 2, 5-furandicarboxylate), so that the color of PEF can be effectively improved.

The invention relates to the technical field of metal cutting fluid, in particular to ester-based semi-synthetic cutting fluid and a preparation method thereof.The ester-based semi-synthetic cutting fluid comprises, by mass, 50-70 parts of ester base oil; 10-20 parts of an environment-friendly emulsifier; 5-10 parts of a nano additive; 5-10 parts of a self-repairing lubricant; 1-5 parts of a low-carbon additive; 0.5 to 1 part of polyvinyl alcohol; the self-repairing lubricant is divided into a reagent A and a reagent B according to a ratio of (5-7): (3-5), the reagent A and the nano additive are mixed, polyvinyl alcohol is added to form a suspension, and the suspension is added into a reaction system; the reagent B is directly added into a reaction system. The invention aims to optimize the dispersibility of nanoparticles and maintain the overall stability and performance of the cutting fluid. The cutting fluid actively responds to the environmental protection concept of carbon peak reaching and carbon neutralization while pursuing efficient lubrication, rust prevention and cleaning performance, and aims at reducing carbon emission in the cutting process and promoting green manufacturing.

The invention relates to the technical field of soil sampling, in particular to a sampler for soil environmental pollution control, which comprises a movable base, an annular plate, a mounting plate, a stepping motor, a rotating shaft, a disc and the like, the annular plate is connected to the top of the movable base, the mounting plate is connected to the top of the annular plate, and the stepping motor is mounted at the top of the mounting plate; a rotating shaft is connected to an output shaft of the stepping motor, a disc is rotationally connected into the annular plate, and the rotating shaft is connected with the disc. A telescopic rod of a hydraulic cylinder can drive a sampling pipe to move downwards, the sampling pipe is inserted into soil to sample the soil, the telescopic rod of an air cylinder extends to push a spray head into the sampling pipe, and the spray head can spray water and a disinfectant into the sampling pipe; the influence of residual soil and pollutants on the accuracy of a detection result is avoided, the interior of the sampling tube is automatically cleaned and disinfected, manual intervention is reduced, and the soil sampling efficiency is improved.

The invention provides an inertia friction welding auxiliary machining device for dissimilar materials and a working method of the inertia friction welding auxiliary machining device, and belongs to the technical field of friction welding. The problem that in the prior art, the heat preservation effect cannot be improved at any time of welding according to the process requirement is solved. The device comprises a main shaft side box body, a main shaft side clamp, an external blowing assembly, a main shaft side to-be-welded piece, a movable sliding table box body, a lathe bed, a tailstock side clamp, a tailstock side to-be-welded piece and a heating mechanism, the main shaft side box body is installed on one side of the lathe bed, and the movable sliding table box body is installed on the other side of the lathe bed in a sliding mode through a movable sliding table rail; the main shaft side clamp is installed in the main shaft side box body through the main shaft fixing seat, the external blowing assembly is arranged on the outer side of a welding area of a main shaft side to-be-welded piece, the tailstock side clamp is installed in the movable sliding table box body through the tailstock fixing seat, and the heating mechanism is arranged on the outer side of the welding area of the tailstock side to-be-welded piece. The device is mainly used for protecting the welding area of friction welding.

The invention discloses a non-aqueous electrolyte for a sodium ion battery. The non-aqueous electrolyte comprises the following components in parts by weight: 70-85 parts of an organic solvent, 10-20 parts of an electrolyte, 0.5-5 parts of a first film-forming additive and 0.5-5 parts of a second film-forming additive, the first film-forming additive is selected from any one or more of 1, 3-propene sultone, 1, 3-propane sultone, methylene methanedisulfonate and 1, 4-butane sultone, and the second film-forming additive is selected from any one or more of 1, 3-propene sultone, 1, 3-propane sultone, methylene methanedisulfonate and 1, 4-butane sultone; the second film-forming additive is selected from any one or more of fluoroethylene carbonate, vinylene carbonate, ethylene sulfate, vinylene sulfate and ethylene sulfite; the electrolyte is composed of sodium hexafluorophosphate, sodium bis (oxalato) borate, sodium bis (fluorosulfonyl) imide and sodium tetrafluoroborate according to the weight ratio of (14-24): (0-1): (0-1): (0-1). By adding the first film-forming additive and the second film-forming additive, the battery film formation is facilitated, the cycle performance is improved, the service life of the sodium battery can be more effectively prolonged, and the sodium battery can be better applied to the fields of energy storage, low-speed vehicles and passenger vehicles.

The utility model discloses a lamp bulb and a decorative lamp string, which comprise a lamp shell, a light source, a light guide plate and a light guide plate, the light-emitting component is arranged in the lamp shell and comprises a first light-emitting part and a second light-emitting part, the first light-emitting part and the second light-emitting part are connected in parallel, the first light-emitting part comprises a first positive electrode end and a first negative electrode end, the second light-emitting part comprises a second positive electrode end and a second negative electrode end, and the first positive electrode end is electrically connected with the second negative electrode end; the first negative electrode end is electrically connected with the second positive electrode end; part of the wire is arranged in the lamp shell and connected with the lamp shell in a sealed mode, and the first light-emitting part and the second light-emitting part are both fixed to the wire and electrically connected with the wire. The first positive electrode end is electrically connected with the second negative electrode end, and the first negative electrode end is electrically connected with the second positive electrode end, so that during electrification, oxidation reaction and reduction reaction on the wire are performed crosswise, wire loss caused by long-term oxidation reaction of the wire is reduced, wire breakage is avoided, and the service life of the bulb is prolonged.

The invention provides an auxiliary cooling device for friction welding of a ring pipe structure and a working method of the auxiliary cooling device, and belongs to the technical field of friction welding. The problems that in the prior art, due to the fact that the surface of an inner ring of a large-diameter-thickness-ratio ring material dissipates heat slowly, the cooling speed of a welding area is uneven, residual stress is increased, the strength of a welding joint is affected, and due to the fact that the surface of the inner ring dissipates heat slowly, microstructure changes are uneven, and the mechanical property of the material is affected are solved. The device comprises a tailstock side clamp, a main shaft side clamp, an inert gas connecting pipe, a gas nozzle and a cooling medium spraying mechanism, the tailstock side clamp is installed in a movable sliding table box body of friction welding equipment, a tailstock side part to be welded is clamped in the tailstock side clamp, a main shaft side part to be welded is clamped in the main shaft side clamp, and the inert gas connecting pipe is connected with the gas nozzle. An inert gas connecting pipe is arranged in the main shaft side to-be-welded part, the outlet end of the inert gas connecting pipe is connected with the gas nozzle, and a cooling medium spraying mechanism is arranged on the inner side of the tailstock side to-be-welded part. The device is mainly used for cooling the welding seam of friction welding.

The invention discloses a welding process control method for a W-shaped structure of a light aviation radiator. The welding process control method comprises the following steps that a gas collecting hood, a connector pipe nozzle, a corrugated plate and a barrel are subjected to positioned welding; the inner cavity of the corrugated plate and the inner cavity of the gas collecting hood are sealed; high-purity argon is introduced from the position of a connector pipe nozzle, an argon detector is connected to the far end of the corrugated plate to detect the purity of argon in an inner cavity of the corrugated plate, a welding gun dragging cover is placed at a weld joint after the purity reaches the standard, then a transparent ceramic nozzle is installed on one end face of the welding gun dragging cover, and a gas blocking and heat absorbing tool is installed on the corrugated plate; in addition, argon is introduced to protect the welding seam area on the back face of the barrel; welding parameters are adjusted, welding of the welding seam of the W-shaped structure is carried out, and after welding is finished, welding is stopped for 15 seconds or above, and various protection tools can be disassembled. Through the control method, the material embrittlement problem in the welding process is solved, and the product stability is improved.

The invention discloses a normal-pressure smelting and casting process for Ti-containing stainless steel, which comprises the following specific process flows: step A, feeding designed raw materials into an intermediate frequency furnace for steel melting; the raw materials in the step B enter an AOD furnace for degassing, deslagging and refining to purify molten steel after being molten; step C, transferring into an intermediate frequency furnace, adding composite slag to make high-alkalinity reducing slag, and covering the molten steel surface with the high-alkalinity reducing slag; d, after the white slag is kept stable, TiFe starts to be added; e, steel tapping is prepared; f, tapping is started after the components are adjusted to reach the standard; g, blowing argon in the whole tapping process, adding a final deoxidizer for final deoxidation protection, and quickly transferring the steel slag into a steel ladle; and H, product casting molding is conducted. Compared with the prior art, argon blowing is adopted in the whole process to isolate outside air, refining is conducted through the AOD furnace, the content of N and the content of S in the molten steel are reduced through argon blowing and oxygen blowing, and a stable reducing slag system is established to cover the molten steel surface in the whole process so as to protect the surface of the molten steel from being oxidized.

The invention discloses a bifidobacterium preparation capable of being preserved at normal temperature and a preparation method thereof, and the preparation method comprises the following steps: firstly, culturing bifidobacterium to obtain bifidobacterium liquid; wherein the bifidobacterium is cultured in a liquid culture medium; carrying out centrifugal treatment on the bifidobacterium liquid, and collecting bifidobacterium sludge; mixing the obtained bifidobacterium sludge with a composite freeze-drying protective additive, and then performing freeze-drying treatment to obtain freeze-dried powder; carrying out top spray granulation on the obtained freeze-dried powder by using maltodextrin as an adhesive through a fluidized bed coating machine to obtain granules; and respectively loading the obtained granules into catechol-gelatin composite capsule shells to obtain the catechol-gelatin composite capsule. According to the method, in the process of preparing the bifidobacterium preparation, the bifidobacterium is subjected to freeze-drying treatment, in order to reduce the cell activity loss of the bifidobacterium to the maximum extent, the specially-made composite freeze-drying protective agent is adopted, the excellent anti-freezing performance is achieved, and the integrity and functions of the bifidobacterium cells are kept at the low temperature.

The invention relates to a herbicide composition and a preparation method thereof, and relates to the technical field of agricultural herbicides, and the herbicide composition is prepared from the following raw materials in parts by mass: 40-50 parts of a herbicide drug-loading system, 3-5 parts of carbon black, 0.5-1 part of an anti-ultraviolet agent, 0.5-1 part of an antioxidant, 5-15 parts of a compound high-dispersity emulsifier and 10-15 parts of filler. The preparation method comprises the following steps: mixing carbon black, an anti-ultraviolet agent, an antioxidant and a filler, uniformly stirring, adding a herbicide loading system and a compound high-dispersity emulsifier, and uniformly stirring to obtain a mixture; and carrying out mechanical pulverization and airflow pulverization on the mixture, drying, screening and packaging to obtain the herbicide composition. The herbicide composition has the effect of improving the stability of the herbicide composition, the decomposition rate of the herbicide can be effectively reduced, and the weeding effect of the herbicide composition is improved.

The utility model discloses a latex tank with a batching mechanism for condom production. The latex tank comprises a latex storage tank, a material passing pipe tightly connected to the inner wall of the bottom end of the latex storage tank, a regulating valve arranged on the material passing pipe, the batching mechanism connected to one end of the material passing pipe, a flow meter connected with the batching mechanism and a transfer tank, the bottom supporting mechanism is arranged at the bottom end of the transfer tank; the air exhaust mechanism is positioned on one side of the transfer tank; the batching mechanism comprises two arc-shaped supports, a hinge connected between the two arc-shaped supports, and an L-shaped extension plate fixedly connected to the outer wall of one side of each arc-shaped support. The liquid latex cannot be in contact with outside air, so that oxidation reaction is avoided, meanwhile, the solidified latex can be conveniently cleaned, and the smooth passing effect of the liquid latex is guaranteed.

This invention discloses a method for preparing high-purity oxygen-free copper, relating to the field of metallurgical technology. The method includes multi-stage electrolytic refining, gradient-heating vacuum melting, inert gas-protected refining, electron beam melting, hydrogen plasma arc melting, directional solidification, and post-treatment steps. The multi-stage electrolytic refining utilizes a specific component electrolyte and periodically commutated current; vacuum melting is combined with bidirectional electromagnetic stirring; inert gas-protected refining is combined with a gradient reduction composite covering agent; electron beam and hydrogen plasma arc melting achieve deep purification and deoxidation; and directional solidification and two-stage annealing ensure product performance. The high-purity oxygen-free copper prepared by this invention has a conductivity of 102.3% IACS, a copper content ≥99.9999%, and an oxygen content <1.0 ppm. It exhibits high purity, low oxygen content, and excellent conductivity. The process is stable and controllable, making it suitable for high-end electronics applications.

The application discloses a WC+TiC particle reinforced high-entropy alloy coating and a preparation method thereof, and belongs to the field of coating preparation. The coating comprises a bottom layer, and the chemical components and mass percentages of the bottom layer are as follows: carbon: 0.1-0.5%, boron: 1-1.3%, chromium: 19-21%, nickel: 21-24%, silicon: 1-1.5%, molybdenum: 8-10%, cobalt: 22-24%, sulfur: 0.005-0.015%, phosphorus: 0.015-0.045%, and the balance is iron and inevitable impurities; and a working layer, and the chemical components and mass percentages of the working layer are as follows: WC: 15-25%, X: 1.5-4.5%, and the balance of components and the proportion between the components are the same as those of the bottom layer, wherein the X is TiC particles coated with Ni on the surface. The method is used for preparing the coating, and compared with a conventional coating, can effectively improve the wear resistance and corrosion resistance of the coating, and prolong the service life of equipment.

The invention belongs to the technical field of rare earth metal electrolysis, and discloses a rare earth metal electrolysis device and method capable of reducing non-metal impurities, and the rare earth metal electrolysis device comprises a base assembly and a guide assembly. Through cooperation of structures such as the electrolysis assembly and the base assembly, after the cathode bar and the anode bar are powered on, rare earth metal is separated out on the periphery of the cathode bar, and waste gas and impurities are separated out from the periphery of the anode bar; therefore, rare earth metal in the electrolytic tank can be fully electrolyzed, the rare earth metal is located in the metal net, separated metal liquid can flow out through the hollowed-out part of the metal net, and metal which is not electrolyzed is still in a solid state, is always located in the metal net and makes contact with the cathode bar to generate electrolytic reaction. The electrolyzed quality of the rare earth metal is further improved; and the working quality of the device is improved.

The present invention discloses a joint device for rubber cable vulcanization and a method for using the same. The joint device comprises: a first sealing column, whose outer diameter is adapted to the inner diameter of the rubber sleeve of the rubber cable, and is used to seal the end of the rubber cable; a first joint, which is sleeved on the outside of the first sealing column, and can clamp and fix the rubber cable between the first joint and the first sealing column; a connecting assembly, which connects the first sealing column with a traction sleeve; the joint device for rubber cable vulcanization has a good sealing effect, can prevent steam from entering the rubber cable and reacting with the conductor to produce an oxidation reaction, and ensure the quality of the rubber cable after the vulcanization treatment is completed. The method for using the joint device comprises inserting one end of the first sealing column into the rubber sleeve of the rubber cable, using a tube crimping machine to deform the first joint inwardly to fit tightly with the first sealing column and the rubber cable, and using a connecting assembly to connect the traction sleeve with the first sealing column. The method for using the joint device can achieve a good sealing effect on the rubber cable.

The utility model discloses pyrolysis equipment for organic solid waste treatment, which comprises a pyrolysis mechanism, the top of the pyrolysis mechanism is fixedly connected with a bottom connecting pipe, the bottom connecting pipe is Y-shaped, a sorting component and a grinding component are arranged above the bottom connecting pipe, and the rear side wall of the pyrolysis mechanism is fixedly connected with a rear connecting pipe. By arranging a sorting barrel, a feeding pipe, a first motor, a first exhaust pipe, a main shaft, stirring blades, a filter sieve, a vibration spring, a vibration motor, a fixing ring, a grinding barrel, a second exhaust pipe, a second motor, a rotating shaft, a material guide disc, an upper grinding disc and a lower grinding disc, organic solid waste is put into the sorting barrel, and after sorting is conducted, large and small organic solids are separated; small particles directly enter the pyrolysis mechanism to be pyrolyzed, and large particles are crushed and then enter the pyrolysis mechanism to be pyrolyzed, so that the pyrolysis efficiency is greatly improved, and meanwhile, an oxidation reaction caused by excessive accumulation of organic solid wastes is avoided.

The invention discloses an evaporator, an air conditioner indoor unit and an air conditioner. The evaporator comprises a metal heat exchange tube and a first electrode. An electric connecting part is arranged on the metal heat exchange tube, and the electric connecting part is used for applying a first potential; the first electrode is adjacent to the metal heat exchange tube and is electrically connected with the metal heat exchange tube by making contact with the corrosion medium, the first electrode is used for applying a second potential, and the second potential is higher than the first potential. Therefore, the applied second potential is higher than the first potential, so that the first electrode becomes the anode, and the whole metal heat exchange tube becomes the cathode, the electron loss of the metal heat exchange tube is reduced, the oxidation reaction of the metal heat exchange tube is prevented, and the metal heat exchange tube is effectively prevented from being corroded.