711results about How to "Resist erosion" patented technology

The invention belongs to the technical field of rock-soil side slope protection, and particularly relates to an expansive soil side slope flexible ecological comprehensive supporting system which comprises an intercepting ditch, a vegetation protection layer, a composite waterproof layer, flexible anchor rods, water seepage and drainage pipes, cultivation and planting soil, a drainage ditch, a backfill soil layer, a step-shaped slope surface, a slope surface and slope protection vegetation. The slope surface is excavated into a step-shaped slope surface, a composite waterproof layer, expansive soil backfill soil, a vegetation protection layer and cultivation and planting soil are sequentially arranged on the step-shaped slope surface from bottom to top, and slope protection vegetation is planted and formed on the cultivation and planting soil; the composite waterproof layer is fixed to the step-shaped slope face through the flexible anchor rods. The vegetation protection layer and the slope protection vegetation together reinforce the shallow soil body, and the composite waterproof layer and the flexible anchor rod play a role in absorbing and relieving the received expansive force. The method has an ecological greening effect, has the functions of common supporting of the shallow surface layer and the deep layer of the expansive soil slope, flexible reinforcement and expansion reduction and allowable generation of a small amount of deformation, is simple in construction and high in efficiency, and can realize long-term stability of the shallow surface layer and the deep layer of the expansive soil slope.

The invention discloses a carbon ceramic composite conductive microsphere, a ceramic resistor and a preparation method, and belongs to the technical field of production of special materials of electrical equipment, and the method comprises the following steps: sequentially dipping porous mullite in a precursor solution of carbon and slurry containing carbon black, and carrying out drying treatment and carbon burying sintering to obtain the carbon ceramic composite conductive microsphere; the preparation method comprises the following steps: preparing a ceramic raw material, performing vacuum-assisted centrifugal impregnation on the ceramic raw material and slurry consisting of a binder in pug consisting of the ceramic raw material and a surfactant, sequentially performing drying and glue discharging treatment, primary isostatic pressing forming and air pressure sintering, cooling to room temperature, and performing mechanical treatment and electrode spraying to obtain the ceramic resistor. Impregnation improves the dispersibility and uniformity of the carbon material in the porous mullite to form a continuous conductive path, the carbon black-containing slurry improves the conductivity of the ceramic resistor, carbon-buried sintering generates in-situ carbon with abundant types, the combination of carbon and a ceramic interface is promoted, and the oxidation resistance, mechanical properties and electrical properties of the ceramic resistor are improved.

The invention discloses an arylamine compound, a composition containing the arylamine compound and an organic light-emitting device. The structure of the arylamine compound is as shown in the following formula (1): # imgabs0 # formula (1). Wherein ring A is selected from substituted or unsubstituted phenanthrene ring; b is selected from structural substituents as shown in the following formula (2); # imgabs 1 # formula (2). And ring C is selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted naphthalene ring and a substituted or unsubstituted phenanthrene ring. The arylamine compound provided by the invention has a series of excellent physical and chemical characteristics, and has a good application prospect in the photoelectric field. Specifically, the arylamine compound has excellent photoelectric stability, can effectively resist performance degradation caused by illumination and current change, and ensures stable output of the device in long-time operation. The light-emitting diode has the advantages of low sublimation temperature, low driving voltage, high light-emitting efficiency and long device service life.

The invention relates to the technical field of all-vanadium redox flow batteries, and discloses a carbon grid derived multi-layer composite bipolar plate for a vanadium battery and a preparation method of the carbon grid derived multi-layer composite bipolar plate for the vanadium battery. The preparation method comprises the following steps: brushing a mixed slurry 1 prepared from a conductive filler, a binder and the like onto the surface to obtain preliminarily modified carbon fibers, then brushing a mixed slurry 2 prepared from oxide nanoparticles, conductive macromolecules and the like onto two surfaces of the preliminarily modified carbon fibers, drying, and repeating the two brushing and drying steps to obtain multi-layer conductive support layer modified carbon fibers; graphite paper is attached to the obtained carbon fibers, and then hot pressing treatment is performed to obtain the carbon conductive grid derived multi-layer composite bipolar plate. According to the prepared multi-layer composite bipolar plate, the etched carbon fiber is used as a substrate, beneficial mechanical strength and conductive grids are provided through stacking of the multiple layers of conductive coatings, the stability and conductivity of the bipolar plate are effectively improved, and therefore the efficiency of a vanadium battery is improved.

The invention relates to the technical field of anticorrosive coatings, and particularly discloses a ship anticorrosive coating and a preparation method thereof. The preparation method comprises the following steps: firstly, mixing acidized titanium dioxide and zinc oxide nanoparticles with industrial ethanol and a modifier, stirring, washing, filtering and drying to obtain a functional filler; secondly, when the castor oil-based hyperbranched polyester polyol is prepared, dehydration and carboxylation of castor oil and condensation polymerization of the castor oil, propylene glycol and sodium hydroxide are included; then, fluorine-containing hyperbranched epoxy resin is prepared, castor oil-based hyperbranched polyester polyol and epoxy chloropropane react to form a matrix, and a fluorine-containing compound is introduced to complete modification; and finally, uniformly mixing the fluorine-containing hyperbranched epoxy resin, the functional filler and the auxiliary agent to prepare the anticorrosive paint. The ship anticorrosive paint prepared by the preparation method provided by the invention has excellent salt spray resistance and environmental protection property, and the mechanical strength and wear resistance of the paint are effectively improved.

The invention belongs to the technical field of coating preparation, and discloses a nanoparticle modified heavy anti-corrosion material as well as a preparation method and application thereof. The nano-particle modified heavy anti-corrosion material comprises the following components in percentage by weight: 60-80% of a component A, 10-25% of a component B and 10-30% of a first solvent, wherein the total percentage is 100%; the component A comprises the following components in percentage by weight: 45%-60% of a resin solution, 0.5%-5% of graphene oxide, 8%-20% of polyaniline nanofibers, 0.5%-5% of carbon nanotubes, 0.6%-40% of a filler, 0.3%-3% of an additive and 8%-12% of a cosolvent, and the total percentage is 100%; the component B comprises the following components in percentage by weight: 40-60% of polyamide and 40-60% of a second solvent, wherein the total percentage is 100%. The nano-particle modified heavy anti-corrosion material prepared by the invention has excellent salt mist resistance, acid resistance, alkali resistance, good adhesive force and impact resistance.

The invention discloses an amorolfine hydrochloride liniment and a production process. The formula of the amorolfine hydrochloride liniment comprises amorolfine hydrochloride, ethanol, propylene glycol, polyethylene glycol, acrylic resin RL100, glyceryl triacetate, ethyl acetate and butyl acetate. The preparation method comprises the following steps: 1, selecting a solvent material; step 2, generation of an amorolfine raw material; step 3, synthesizing amorolfine hydrochloride; step 4, preparation of the liniment; step 5, quality control; and step 6, packaging and storing. The amorolfine hydrochloride liniment based on the acrylic resin RL100 as the coating and framework material is designed, the specific release requirement of the medicine can be effectively met, ultraviolet rays can be absorbed, erosion of the ultraviolet rays can be effectively resisted, and the service life of the medicine is prolonged; meanwhile, the propylene glycol component is added, so that the stability and solubility of the medicine and the permeability of the medicine are improved; the polyethylene glycol component is also added, so that the smearing property and the use experience of the medicine can be improved.

The invention discloses a production process of a steel-cored aluminum strand, and relates to the technical field of cable production, and the production process of the steel-cored aluminum strand comprises the following steps: step 1, raw material preparation and inspection: selecting a high-carbon steel wire rod, a galvanized steel wire and an aluminum single wire for inspection according to lead use requirements; after the surface of the steel wire rod is treated, the steel wire rod needs to be cold-drawn into the steel wire, and in order to improve the corrosion resistance of the steel wire, the surface of the steel wire is galvanized; according to the production process of the steel-cored aluminum stranded wire, the steel-cored aluminum stranded wire is formed by stranding the high-conductivity aluminum wire stranding layer and the galvanized steel wire, the welding or crimping technology is adopted at the joint of the aluminum wire stranding layer and the steel wire before stranding, and the stranded steel-cored aluminum stranded wire needs to be subjected to heat treatment; the heat treatment can improve the conductivity, strength and hardness of the stranded wire. And a solid insulating layer needs to be extruded outside the stranded wire, so that the functions of improving the insulating property and enhancing the overall strength of the stranded wire are achieved.

The invention relates to the field of anti-cutting gloves, in particular to an anti-cutting glove and a preparation method thereof, which are used for solving the problems of insufficient protection performance and poor comfort of the existing anti-cutting glove. The anti-cutting glove comprises a skin-attaching comfortable layer, a cutting-resistant layer and a wear-resistant gum dipping layer, the skin-attaching comfortable layer enables the glove to have excellent comfort and not prone to causing hand pressure, the cutting-resistant layer can effectively improve the cutting-resistant performance of the glove, the cutting-resistant capability of the glove is greatly enhanced, sharp instruments are prevented from easily penetrating through the glove, the hand safety is effectively protected, the wear-resistant gum dipping layer can effectively improve the sealing performance and wear resistance of the glove, and the service life of the glove is prolonged. The durability and the stability of the glove are improved; the anti-cutting gloves prepared by the preparation method not only can effectively protect the safety of hands, but also can keep excellent fitting degree and flexibility even when high-strength operation is carried out, so that an operator can smoothly complete tasks in a complex environment, and the working efficiency and the safety are remarkably improved.

The invention relates to a polyamide composite membrane containing a middle layer and a preparation method of the polyamide composite membrane. The polyamide composite membrane comprises a polyborosiloxane-based porous polymer substrate, a modified polyimide middle layer and a polyamide separation layer, a modified polyimide intermediate layer is loaded on the surface of the porous polymer substrate, and a polyamide separation layer is loaded on the surface of the modified polyimide intermediate layer. The polyborosiloxane-based porous polymer substrate and the modified polyimide intermediate layer have better compatibility, interface defects can be reduced, the overall performance of the membrane can be improved, moreover, the polyborosiloxane-based porous polymer substrate also has a self-healing characteristic, and after the polyborosiloxane-based porous polymer substrate is damaged, the self-healing property of the polyborosiloxane-based porous polymer substrate is improved. Fractured connection can be repaired without external stimulation (such as light and heat), and self-repairing of the substrate is achieved.

The invention discloses a solid-waste-based marine engineering cementing material, a preparation method thereof and an offshore wind power grouting material, and relates to the technical field of concrete materials, the solid-waste-based marine engineering cementing material comprises 200-400 parts of modified tailings, 50-100 parts of ceramic polishing mud, 50-100 parts of fluorgypsum, 100-150 parts of red mud, and 10-30 parts of an activator, the modified tailings are obtained by acidizing tailings powder, mixing the acidized tailings powder with carbide slag, grinding the mixture and activating the mixture at the high temperature of 600 DEG C or above, and the exciting agent comprises a stabilizing component and an exciting component. The solid waste-based cementing material is prepared by using the gold tailing powder with a huge stockpiling amount as a main material and cooperatively utilizing solid wastes such as the ceramic polishing mud, the fluorgypsum and the red mud, and the offshore wind power grouting material with excellent workability, mechanical property and durability is further prepared from the solid waste-based cementing material, the tunnel hole slag machine-made sand and various additives.

The invention relates to the technical field of electric wires and cables, in particular to an outdoor high-temperature-resistant and corrosion-resistant photovoltaic cable and a preparation method thereof.The preparation method comprises the steps that a pretreated copper rod is fed into a wire drawing machine and gradually drawn into copper wires with the preset diameter through a multi-stage wire drawing die, and a stranding machine is adopted for stranding multiple strands of copper wires into a conductor according to the specific direction and pitch; carrying out preheating treatment on an insulating material, feeding the preheated insulating material into an insulating extruder, and uniformly extruding the insulating material on a conductor through a mold to form an insulating layer; covering the insulating layer with a shielding material by adopting a braiding machine, and cooling the insulated and shielded cable; feeding a sheath material into a sheath extruder, extruding the sheath material outside the shielding layer through a mold, feeding the extruded cable into a cooling water tank, and pulling the cable to pass through a shaping device; and the cooled and shaped cable is rolled, so that the produced photovoltaic cable has excellent corrosion resistance and can effectively resist corrosion of various corrosive substances in an outdoor environment.

The invention relates to a method for solidifying aeolian sand and resisting wind erosion by combining microorganisms with sugar calcium, which is characterized in that a sandy soil body is more sufficiently and efficiently solidified by utilizing a synergistic effect mechanism of combining MICP with sugar calcium, so that the purposes of enhancing the strength of the sandy soil body and resisting natural environment erosion are achieved; in the process of solidifying the sandy soil by combining sugar and calcium with MICP, the sugar and calcium can promote the growth of microorganisms, regulate the reaction environment and contribute to the generation of calcium carbonate precipitates, so that the sandy soil particles play a role in cementation, and meanwhile, the sugar and calcium are dissolved in water to release viscous substances, so that the generated calcium carbonate precipitates are more uniform, and the quality of the soil is improved. The effect of solidifying a sandy soil body is more obvious; the method adopts green and environment-friendly materials, is suitable for reinforcing a large-area sandy soil area, has a very remarkable curing effect, has the excellent characteristic of resisting natural environment erosion, and is widely applied to the fields of sandy soil curing, protection and the like.

The utility model discloses a fluoroplastic insulating high-temperature-resistant fireproof cable, which comprises a cable core, the cable core comprises eight wire cores which are annularly distributed at equal intervals, each wire core is composed of an inner sheath and a conductor, a composite insulating outer layer is wrapped outside the cable core, the composite insulating outer layer is composed of a contact layer, a buffer layer and a reinforcing layer, and the contact layer is wrapped outside the buffer layer. A composite high-temperature-resistant layer is arranged outside the composite insulating outer layer, the composite high-temperature-resistant layer is composed of a high-temperature-resistant base material, a heat reflecting layer and a heat-resistant protective layer, and the composite high-temperature-resistant layer is wrapped with an outer sheath. The problems of cable stability, flame-retardant and fireproof performance, electrical performance, chemical corrosion resistance and large-current transmission capability in a high-temperature environment are solved.

The embodiment of the invention provides a nickel alloy surface composite coating and a preparation method thereof, and relates to the technical field of protective coatings, the nickel alloy surface composite coating comprises a Ta diffusion barrier layer prepared on the nickel alloy surface, and TiAlTa / (TiAlTa) xC1-x functional layers alternately arranged on the surface of the Ta diffusion barrier layer. The Ta diffusion barrier layer is adopted, so that excellent corrosion resistance is provided, corrosion of various corrosive media including strong acid, strong alkali and the like can be effectively resisted, the mutual diffusion effect of the nickel alloy and Ti, Al and other elements in the coating under the high-temperature condition is remarkably reduced, and the binding force of the coating and a base material is remarkably enhanced. The TiAlTa / (TiAlTa) xC1-x functional layers are alternately arranged, a formed multi-layer alternate structure can break the growth of penetrative columnar crystals and reduce the porosity, so that the corrosion resistance of the coating is improved, the surface layer (TiAlTa) xC1-x comprises various MAX phases and carbide phases, and the antifriction and wear-resistant effects and the corrosion resistance of the composite coating are improved.

The invention relates to an intelligent photovoltaic curtain wall which has the function of adjusting light transmission intensity. The surface of the photovoltaic curtain wall is fully covered by the photovoltaic module, the supporting body is installed behind the photovoltaic battery module, and the photovoltaic module is fixed on the supporting body through the module fastener. Air hole channels are arranged among the photovoltaic modules to adjust temperature, and air holes can be connected with external constant-temperature systems such as a central air conditioner, so that the photovoltaic curtain wall has good constant-temperature capability. The photovoltaic cell is located between the guide rails, and the controller controls the driving motor to achieve movement of the cell position, so that the light transmission intensity is adjusted in good time. A mechanical arm and a control motor are arranged in the photovoltaic cell storage box and used for storage and output of photovoltaic cells, and the control motor receives instructions of the controller to operate. The controller is connected with the driving motor and the control motor through data lines, the shielding area ratio of the photovoltaic cell is automatically adjusted according to user requirements, and automatic adjustment of the light transmission intensity is achieved.

The invention provides an NC30Fe high-chromium nickel-based alloy pierced billet as well as a preparation method and application of the NC30Fe high-chromium nickel-based alloy pierced billet. The preparation method comprises the following steps: firstly, heating an NC30Fe high-chromium nickel-based alloy tube blank to a specific charging temperature, and perforating by utilizing a hot cross rolling perforation process; in the punching process, it is ensured that the dimensional tolerance and eccentricity of a pierced billet meet the requirements by strictly controlling the roller distance, the top temperature and the extension coefficient; and then, quenching treatment is carried out on the pierced billet subjected to perforation, so that the grain size is controlled to be within the range of grade 3 to grade 7, and the high-temperature strength and creep resistance of the material are improved. According to the preparation method disclosed by the invention, through introduction of a hot cross piercing process, the problems of more surface defects, large eccentricity and difficulty in grain control caused by a traditional hot extrusion process are solved, the yield is increased to 93% or above, and the surface smoothness and the dimensional precision are remarkably improved. The pierced billet is suitable for preparation of high-temperature corrosion-resistant and high-precision nickel-based alloy pipes in the fields of petroleum, chemical engineering, aerospace and the like, and has high application value.

According to the offshore wind power generation ship, a ship body serves as a base body, and a plurality of cross beams and vertical rods are arranged on the two sides of the ship body, so that the layout of blades is more flexible, the angle or position can be adjusted according to changes of the wind direction and the wind speed, and therefore the wind energy capturing efficiency is maximized; the adaptability and stability of the wind power generation ship under different sea conditions and climate conditions are enhanced, the blades are connected with the power generation unit, rich wind energy resources on the sea can be efficiently captured and converted into electric energy, meanwhile, the power generation unit is directly connected to the ship body driving unit, instant conversion and utilization of energy are achieved, and the energy utilization rate is increased. According to the integrated design, the energy transmission process is simplified, energy loss is reduced, the whole system is more compact and efficient, and reliable guarantee is provided for autonomous navigation and power supply of the ship.

The present application relates to a terpene resin with controllable molecular weight and a preparation method thereof. A preparation method of a terpene resin with controllable molecular weight comprises: mixing β-pinene with ethylene glycol to obtain a mixture; mixing toluene and a catalyst at ‑5 to 5°C until uniform; dropping the mixture and keeping it warm at 5‑10°C for 1‑3h; removing the catalyst; desolventizing toluene and discharging the material, wherein the mass ratio of toluene to β-pinene is (1‑1.15): 1, the amount of the catalyst is 3.5‑5% of the mass of β-pinene, and the amount of ethylene glycol is 0.04‑0.07% of the mass of β-pinene. The present application can achieve precise control of the molecular weight of the terpene resin, prepare a terpene resin product with stable performance, and meet the high standard requirements of sanitary tape for viscosity, anti-aging and aviation electronic tape to enable it to perform accurately and stably in avionic electronic instruments, and broaden its application range in high-end applications such as medical, food, and aviation.

The invention discloses a solid waste-based multifunctional tailing asphalt pavement material and a preparation method thereof, and the pavement material comprises the following components in parts by mass: 4.5-5.5 parts of polyurethane modified asphalt, 45-60 parts of titanate modified iron tailings, 2-5 parts of surface activated copper tailing powder, 20-35 parts of copper tailing sand and 0.5-1.0 part of acetic anhydride modified wollastonite fiber. The high and low temperature performance, the durability and the self-healing performance of the asphalt mixture are comprehensively improved by modifying the solid waste tailing material and the asphalt, and the application range of the asphalt mixture is effectively widened.

The invention relates to the technical field of preparation of high-strength fluorine-containing polyimide foam materials, in particular to a high-strength fluorine-containing polyimide foam material and a preparation method thereof. In the preparation process, bismaleimide resin is added, and the bismaleimide resin comprises the following components: a fluorine-containing monomer, bismaleimide, isocyanate, an initiator, a foam stabilizer and a foaming agent. The preparation method comprises the following steps: respectively weighing the fluorine-containing dianhydride, the fluorine-containing diamine, the bismaleimide, the solvent and the low-molecular alcohol according to the mass ratio, reacting to form a prepolymer solution, adding the initiator, the foaming agent and the stabilizer to form a mixed solution, stirring the mixed solution with the isocyanate at a high speed, injecting the mixed solution into a mold, and carrying out foaming molding at room temperature to obtain the fluorine-containing polyurethane foam material. And performing high-temperature curing to obtain the high-strength fluorine-containing polyimide foam. Compared with common polyimide foam, the mechanical strength and toughness of the polyimide foam are remarkably improved in an interpenetrating network enhancement mode.

The invention relates to terpene resin with controllable molecular weight and a preparation method thereof. The preparation method of the terpene resin with the controllable molecular weight comprises the following steps: mixing beta-pinene with ethylene glycol to obtain a mixture; uniformly mixing the toluene and the catalyst at-5 to 5 DEG C; dropwise adding the mixture, and keeping the temperature at 5-10 DEG C for 1-3 hours; removing the catalyst; the mass ratio of methylbenzene to beta-pinene is (1-1.15): 1, the use amount of the catalyst is 3.5-5% of the mass of beta-pinene, and the use amount of ethylene glycol is 0.04-0.07% of the mass of beta-pinene. According to the invention, accurate control of the molecular weight of the terpene resin can be realized, a terpene resin product with stable performance can be prepared, and high-standard requirements of a sanitary adhesive tape on viscosity and aging resistance and performance, such as accurate and stable performance operation of an aviation electronic adhesive tape in an aviation electronic instrument, can be met; and the application range in high-end application occasions such as medical treatment, food, aviation and the like is widened.

The invention discloses an iron oxide pigment with super weather resistance and corrosion resistance and a preparation method thereof, and belongs to the technical field of coatings. The method comprises the following steps: mixing iron oxide, polyamide resin and anti-ultraviolet resin, carrying out ball milling, mixing with a nano titanium dioxide solution, drying, and curing under ultraviolet rays to obtain the iron oxide pigment. The iron oxide pigment prepared by the invention has excellent weather resistance and corrosion resistance, can resist corrosion of ultraviolet rays to the pigment, prevents cracking, improves the stability and pollution resistance of the pigment and prolongs the service life of the pigment, and the preparation method is simple and convenient, and is suitable for large-scale industrial production.

The invention provides solar cell conductive paste and a photovoltaic module. The solar cell conductive paste comprises main glass powder and auxiliary glass powder. Wherein the main glass powder is Pb-Si-B series glass, the auxiliary glass powder is Pb-Ti-Si-B series glass, the mass fraction of the main glass powder in the slurry is 1.5%-2.5%, and the mass fraction of the auxiliary glass powder in the slurry is 0.2%-1%. The paste further comprises silver powder and an organic carrier, the mass fraction of the silver powder is 82%-90%, and the mass fraction of the organic carrier is 8%-15%. The low solubility of the electrode grid line in acetic acid is adjusted through the auxiliary glass, acetic acid corrosion is resisted, the electrode grid line is resistant to high temperature and high humidity, the reliability of the module is improved, and the problem that the efficiency of the battery is affected by acetic acid generated by EVA decomposition of a double-sided EVA module packaging battery is solved. The invention also provides a photovoltaic module using the slurry.

The invention provides modified acrylic resin, a preparation method, an anticorrosive coating and application thereof in order to solve the problem that an anticorrosive coating for an aluminum fin of an air conditioner heat exchanger in the prior art cannot give consideration to corrosion resistance and high heat exchange. The modified acrylic resin comprises an inner core, a silicone acrylic resin outer layer and a hyperbranched outer layer, the inner core is isocyanate modified graphene, the silicone acrylic resin outer layer coats the inner core, the hyperbranched outer layer is located outside the silicone acrylic resin outer layer, and the hyperbranched outer layer is grafted with an epoxy group, an amide group and a phosphate group. The isocyanate modified graphene in the modified acrylic resin provided by the invention can delay permeation of a corrosion medium to a modified acrylic resin coating, and in addition, the graphene can effectively conduct heat to improve the heat exchange efficiency; the silicone acrylic resin outer layer and the hyperbranched outer layer isolate the base material coated with the modified acrylic resin from an external corrosive medium through different effects; in conclusion, the modified acrylic resin provided by the invention has excellent heat conduction and corrosion resistance.

The utility model discloses a protection slope for hydraulic engineering, which comprises a protection slope body, a first water baffle, a second water baffle and a supporting device, the first water baffle and the second water baffle are arranged on the slope of the protection slope body, the supporting device is arranged between the first water baffle and the second water baffle, the first water baffle is arranged in front of the second water baffle, and the second water baffle is arranged in front of the supporting device. A buffer plate is arranged above the first water baffle, the buffer plate is connected with the first water baffle through a rotating shaft, and the high stability of the protection slope is achieved by optimizing the mechanical structure and the component connection relation. The protective layer is made of high-strength and corrosion-resistant metal materials, erosion and oxidation of water flow can be effectively resisted, and the service life of the protective slope is prolonged. Water collected on the slope surface can be drained in time through the drainage groove, the influence of water pressure on the slope body is reduced, and therefore potential safety hazards such as landslide caused by water accumulation are prevented. Under the action of the double-layer protection plate, water flow cannot erode soil behind the protection slope, and loss is avoided.

The external circulation water pump of the small-displacement diesel engine comprises a water pump shell and a transmission shell installed on one side of the water pump shell, a water inlet and a water outlet are formed in the water pump shell, and the side, away from the transmission shell, of the water pump shell is detachably connected with an end cover used for sealing the water pump shell. A flexible impeller is installed in the water pump shell, a transmission shaft is installed in the transmission shell, and a water seal is arranged between the water pump shell and the transmission shell. The sealing performance between the transmission shell and the water pump shell can be improved through the water seal, in addition, even if the water seal loses efficacy, the transmission shell exists between the water pump shell and the diesel engine, seawater entering the transmission shell can be rapidly discharged through the through hole, and therefore the seawater cannot enter an engine gearbox, the influence on a diesel engine lubricating system is avoided, and the service life of the diesel engine is prolonged. Normal operation of the diesel engine is ensured.

The invention discloses an anti-seepage brick for an electrolytic cell lining and a preparation method thereof, the anti-seepage brick comprises an aluminum silicate mixture, the aluminum silicate mixture is composed of at least three of pyrophyllite, flint clay, clay, silica, albite and potassium feldspar, a potassium silicate eutectic and a fine powder sintering aid are added, the materials are uniformly mixed, a binding agent is added for granulation, mechanical pressing molding is performed, and high-temperature sintering is performed; the aluminum silicate mixture is prepared from the following raw materials in parts by weight: 50 to 75 parts of pyrophyllite, 20 to 42 parts of flint clay, 1 to 8 parts of albite and 1 to 5 parts of potassium silicate eutectic. The invention relates to the technical field of anti-seepage bricks, and particularly provides an anti-seepage brick for an electrolytic cell lining and a preparation method of the anti-seepage brick.

The utility model discloses a tundish slag blocking wall with high erosion resistance, which comprises a first slag blocking wall body, second slag blocking wall bodies, steel flowing ports and a reinforcing sleeve, the left side and the right side of the first slag blocking wall body are fixedly connected with the second slag blocking wall body, the first slag blocking wall body and the second slag blocking wall body are provided with the steel flowing ports, and the reinforcing sleeve is fixedly connected with the first slag blocking wall body and the second slag blocking wall body. Reinforcing sleeves are fixedly mounted on the first mounting plate and the second mounting plate, and the first slag stopping wall body and the second slag stopping wall body are each composed of a reinforced concrete layer, an anti-corrosion layer and a wear-resisting layer. Through the arrangement of the wear-resisting layer and the anti-corrosion layer, the wear-resisting layer and the anti-corrosion layer are arranged on the outer side of the slag stopping wall body, so that effective protection measures can be improved, the wear-resisting layer can effectively resist scouring and friction, abrasion of the slag stopping wall is reduced, and the anti-corrosion layer can isolate corrosive media in the environment; the slag blocking wall is prevented from being damaged by chemical corrosion and electrochemical corrosion, the structural integrity and stability of the slag blocking wall are kept, and therefore the service life of the slag blocking wall is prolonged.

The invention discloses a current transformer amorphous alloy assembling method, and relates to the technical field of transformer assembling. The method comprises the steps that amorphous alloy is rolled to obtain an amorphous alloy iron core; performing vacuum thermal radiation heat treatment annealing on the amorphous alloy iron core to improve the performance of the amorphous alloy iron core; and the annealed amorphous alloy iron core is assembled in an alloy steel protective shell, the end face is covered with a hard insulating plate, and the performance of the amorphous alloy iron core is reinforced and stabilized. Corresponding parameters of a temperature rise process and a heat preservation process involved in the heat treatment annealing step are set by a computer for controlling the heat treatment furnace, a backing furnace is set to be automatically completed, and the method is short in period and high in production efficiency. According to the assembly mode without a mold, the production efficiency is greatly improved, and the production cost is saved.