19results about How to "Improve erosion ability" patented technology

The invention relates to the technical field of steelmaking refining refractory materials, in particular to a composite long-service-life ladle nozzle pocket block for steelmaking refining and a preparation method of the composite long-service-life ladle nozzle pocket block. The ladle nozzle pocket block comprises a pocket block inner core, the inner core is cylindrical, a steel flowing hole is formed in the center of the inner core from top to bottom, the inner core comprises an upper inner core and a lower inner core which are aligned and matched, the upper inner core and the lower inner core are formed in a mechanical pressing mode, a pouring piece is arranged on the outer side of the inner core, the pouring piece is flush with the end face of the top of the inner core, and the upper inner core and the lower inner core are arranged in the pocket block inner core. The bottom of the pouring part extends towards the lower portion of the inner core, a mounting hole is formed in the center of the bottom of the pouring part, the diameter of the mounting hole is larger than that of the steel flowing hole, and the mounting hole and the steel flowing hole are coaxial. The service life of the ladle nozzle seating brick can be prolonged to 90 times or above, the use cost and the labor cost of ladle masonry refractory materials are reduced, and meanwhile the safety performance of online use of a ladle is improved.

The invention belongs to the technical field of electrode materials, and particularly relates to an electrode foil, a preparation method thereof and an aluminum electrolytic capacitor, and the preparation method of the electrode foil comprises the steps: carrying out the formation of a corrosion foil, and forming an aluminum oxide film on the surface of the corrosion foil; forming a nano-porous silicon dioxide film on the surface of the aluminum oxide film to obtain an electrode foil with an aluminum oxide-silicon dioxide double-layer composite oxide film; and sequentially carrying out phosphating treatment and annealing treatment on the electrode foil. According to the preparation method, after the corrosion foil is subjected to formation treatment to form the Al2O3 film, the nano-porous SiO2 film is formed on the surface of the Al2O3 film, the SiO2 film is subjected to phosphating treatment to contain phosphorus elements, the phosphorus elements are uniformly diffused into the SiO2 film, a double-layer composite oxidation film with the Al2O3 inner layer and the SiO2 outer layer is obtained, and the specific volume, the hydration resistance and the corrosion resistance of the low-voltage electrode foil are improved.

The invention discloses an automatic liquid supplementing device for texturing of a crystalline silicon battery piece, and relates to the technical field of battery production. The device comprises an acid tank, a solution box is fixedly installed on one side of the outer wall of the acid tank, a top frame is fixedly installed at the top end of the solution box, a liquid supplementing reciprocating pushing mechanism is arranged in the top frame, a one-way liquid supplementing mechanism is arranged on the liquid supplementing reciprocating pushing mechanism, and a fixed supporting frame is arranged on the side, close to the solution box, of the top end of the acid tank. A reciprocating swing mechanism is arranged on the fixed supporting frame, a solution flow divider is fixedly installed at the top end of the fixed supporting frame, and adjusting assemblies are arranged on one side of the liquid supplementing reciprocating pushing mechanism and one side of the reciprocating swing mechanism. The reciprocating swing mechanism is arranged, the oscillating plate is driven by the reciprocating swing mechanism to swing in a reciprocating mode, the oscillating plate swings in an acid solution in a reciprocating mode so that the acid solution in the acid tank can be promoted to flow, and the liquid supplementing reciprocating pushing mechanism and the one-way liquid supplementing mechanism are arranged.

The invention discloses a sintering method of an aluminum oxide electrostatic chuck, and belongs to the technical field of electrostatic chucks, and the sintering method comprises the following steps: S1, preparing an insulating layer substrate from raw materials and a multilayer structure, depositing an electrode layer on the insulating layer substrate, coating the electrode layer with aluminum oxide nano powder to form a dielectric layer, and spraying a silicon carbide coating on the surface of the dielectric layer to form the multilayer structure; s2, primary sintering is conducted, specifically, the multi-layer structure is placed in a vacuum sintering furnace to be subjected to primary sintering; s3, secondary sintering is conducted, specifically, the multi-layer structure obtained after primary sintering is subjected to secondary sintering through the pulse discharge plasma sintering technology, and cooling is conducted after secondary sintering; s4, the heat-conducting glue is attached to and integrated with the cooling base, the bottom of the insulation layer base body obtained after secondary sintering of the multi-layer structure is coated with the heat-conducting glue, the insulation layer base body and the cooling base are pressed, the electrostatic chuck is manufactured, and plasma cleaning is conducted on the surface of the electrostatic chuck; and S5, performing performance optimization treatment, namely performing high-voltage corona treatment on the electrostatic chuck.

The present invention discloses an offshore wind power foundation scour protection filling reinforcement construction device and method. The on-site construction device and construction method are described in detail for different working conditions such as scour depth, speed and scour form, solving the problem that traditional technology is difficult to adapt to local conditions; through pre-construction detection, the optimal filling material and proportion under different working conditions are selected. A new type of double-layer slurry on-site transportation pipeline device is designed and applied, and both single-liquid slurry and double-liquid slurry can be used; an annular buckle device on the wind power pile foundation and a claw-shaped support device extending into the seabed are designed and applied to flexibly adjust the filling angle of the transportation pipeline, avoiding the shaking of the transportation pipeline and the construction ship during the construction process and affecting the safety of the pile foundation; using a depth detection sensor to automatically control the flow of the slurry to achieve accurate filling of grouting materials with a high degree of automation.

The invention relates to UHPC (Ultra High Performance Concrete) containing glass fibers as well as a preparation method and application thereof, and belongs to the technical field of novel building materials. The concrete is prepared from the following components in parts by mass: 400 to 500 parts of cement, 40 to 50 parts of silica fume, 600 to 800 parts of fine aggregate, 1000 to 1200 parts of coarse aggregate, 30 to 50 parts of steel fiber, 10 to 30 parts of glass fiber, 120 to 150 parts of water and 6 to 8 parts of water reducing agent. The glass fibers are modified superfine glass fibers and are modified by lithium oxide and sodium hydroxide. The durability of the ultra-fine glass fiber in a high-alkalinity environment is remarkably improved through modification treatment, the problem that the performance of traditional ultra-fine glass fiber declines rapidly due to insufficient chemical stability is solved, and the anti-cracking performance, the impact resistance and the long-term durability of UHPC are comprehensively improved from the macroscopic level to the microscopic level.

The invention provides a seawater-corrosion-resistant cement adhesive for an extra-high voltage porcelain insulator and a preparation method of the seawater-corrosion-resistant cement adhesive. The cement adhesive comprises the following components in percentage by weight: 40-60wt% of aluminoferrite cement, 30-50wt% of artificial porcelain sand, 3-5wt% of a cement expanding agent, 0.5-5wt% of silica powder and 0.5-5wt% of silicon carbide whiskers, the sum of the components is 100%, and the cement adhesive further comprises an externally doped anti-cracking agent, a water reducing agent and a defoaming agent, the external mixing amounts of the anti-cracking agent, the water reducing agent and the defoaming agent are respectively 0.1 to 0.3 weight percent, 0.1 to 0.3 weight percent and 0.1 to 0.5 weight percent. The cement adhesive is reasonable in material selection, high in early strength and continuously increased in later strength, the prepared porcelain insulator has excellent seawater erosion resistance, and the cement adhesive has a good application prospect when being applied to the porcelain insulator with high requirements on seawater erosion resistance and seawater erosion resistance.

The invention discloses portland cement clinker based on marlstone and a preparation method thereof, and relates to the technical field of cement. The method comprises the following steps: crushing, grinding and drying natural marlstone, spraying and activating by using a mixed steeping liquor containing sodium hydroxide, lanthanum nitrate and cerous nitrate, and drying and roasting at low temperature to obtain modified marlstone powder; mixing the powder with calcium carbonate, quartz powder, ferric oxide, dihydrate gypsum, calcium fluoride and barium carbonate, and pressing into a green body; and finally, sequentially carrying out two-stage mineralization calcination on the green body, introducing oxygen-enriched air in a heat preservation stage, continuously calcining, and cooling to obtain the cement clinker. According to the invention, marlstone is used as a main raw material, and the obtained cement clinker has excellent sulfate corrosion resistance through dipping activation and multi-stage calcination processes.

The invention relates to the technical field of artificial island construction, and discloses a marine artificial island construction method and a marine artificial island building structure.The construction method comprises the steps that construction waste is subjected to classification pretreatment, and the construction waste subjected to classification pretreatment is conveyed to a marine artificial island engineering sea area; performing engineering construction on the peripheral island wall of the artificial island by utilizing the construction waste subjected to classification pretreatment, performing engineering construction on a dense solid body in the artificial island by utilizing the construction waste subjected to classification pretreatment, performing engineering construction on the revetment on the outer side of the artificial island by utilizing the construction waste subjected to classification pretreatment, and paving prefabricated wave-resistant regenerated products; according to the method, the construction waste is firstly classified and pretreated, and then the classified construction waste is used for constructing all the components of the offshore artificial island according to the physical and mechanical properties of the construction waste, so that all the components in the construction waste are fully utilized, and the utilization rate of the construction waste is increased; and meanwhile, the classified construction wastes with different mechanical properties correspondingly construct artificial island components with different strengths, so that the construction strength of the artificial island is improved.

This invention relates to a method for preparing and applying a polypyrrole-coated indium-based electrocatalyst. The method includes the following steps: adding carbon nanotubes to an N,N-dimethylformamide solution containing indium nitrate, transferring the solution to a high-temperature reactor, and reacting to obtain In₂O₃ / CNT; placing the In₂O₃ / CNT in an aqueous solution containing pyrrole, and then adding ammonium persulfate to react, thereby obtaining the polypyrrole-coated indium-based electrocatalyst. The polypyrrole-coated indium-based electrocatalyst obtained by this invention exhibits excellent electrocatalytic performance in the reduction of carbon dioxide to formic acid, possessing both high Faradaic efficiency and long-term catalytic stability.

The utility model belongs to the technical field of rubber hose assemblies, and particularly relates to a detachable rubber hose assembly convenient to maintain, which comprises a wear-resistant sleeve and further comprises an anti-crack layer fixedly arranged on the inner wall of the wear-resistant sleeve, a reinforcing steel bar layer fixedly arranged on the inner wall of the anti-crack layer, a fire-retardant layer fixedly arranged on the inner wall of the reinforcing steel bar layer, and a fire-retardant layer fixedly arranged on the inner wall of the fire-retardant layer. A buffer layer is fixedly arranged on the inner wall of the fire retardant layer, a sealing gasket is installed through a connector, then the sealing performance of connection is improved through the sealing gasket, the connector is provided with an inner threaded sleeve, connection with other pipelines is facilitated, a clamping bolt is used in cooperation with a threaded groove, and the sealing performance of the pipeline is improved. The rubber hose assembly has the advantages that the rubber hose assembly can be conveniently disassembled and assembled, the connector can be maintained, and accordingly the convenience in use of the connector can be improved by the aid of the effect of limiting the connector after connection, the connection stability is improved, and the rubber hose assembly can be conveniently disassembled and assembled by the aid of matched use of the inner threaded sleeve, the clamping bolt and the threaded groove.

The utility model discloses an immersion type water gap with high structural strength, which comprises a water gap body and a framework mechanism, wherein the water gap body is composed of a bowl section, a transition section and a slag line section; the bowl section is fixedly connected to the top of the transition section; the slag line section is fixedly connected to the bottom of the transition section; the framework mechanism is embedded in the bowl section, the transition section and the slag line section; the framework mechanism is composed of reinforcing rings and reinforcing ribs; the number of the reinforcing rings and the reinforcing ribs is multiple; the reinforcing rings are arranged in a linear array from top to bottom.

The utility model relates to the technical field of power lines, and discloses a household power line structure resistant to acid and alkali erosion, which solves the problem that the existing power line is poor in erosion resistance, and comprises a power line body, the power line body is composed of a polytetrafluoroethylene erosion-resistant layer, a tensile sheath layer, a tensile assembly, a net-shaped shielding layer, a polybenzoate sheath layer, an aluminum foil protection layer and a plurality of wire cores, the polytetrafluoroethylene erosion-resistant layer is arranged on the outer surface of the tensile sheath layer in a sleeving mode, and the tensile assembly is fixedly connected to the interior of the tensile sheath layer; the tensile sheath layer is sleeved on the outer surface of the mesh shielding layer, the mesh shielding layer is sleeved on the outer surface of the polybenzoate sheath layer, the polybenzoate sheath layer is sleeved on the outer surface of the aluminum foil protection layer, the aluminum foil protection layer is sleeved on the outer surface of the wire core, and a flame-retardant filler is filled between the aluminum foil protection layer and the wire core; through the power line structure, the acid and alkali corrosion resistance can be improved, the tensile property is improved, the service life is prolonged, and the use safety is improved.

The invention discloses a mechanical plug removal tool for a production pipe column and a system thereof, and belongs to the technical field of oil-gas field development. The device comprises a strong magnetic fishing mechanism, a steel brush mechanism, a jet flow mechanism and a milling shoe which are sequentially communicated from top to bottom, the strong magnetic fishing mechanism is used for collecting chippings generated in the unblocking operation project; the steel brush mechanism is used for cleaning the blocked part; the jet flow mechanism is used for carrying out flushing operation; the milling shoe is used for drilling and milling operation. According to the mechanical plug removal tool for the production pipe column, a blocked part is repeatedly cleaned through the steel brush mechanism, flushing operation is conducted through the jet flow mechanism, drilling and grinding operation is conducted through the grinding shoe, chippings generated in the operation engineering are collected through the strong magnetic fishing mechanism, strong magnetic fishing, steel brush, jet flow and grinding shoe are combined, and the working efficiency is improved. Drilling and grinding, jet flow cleaning, sweeping and scrap collecting can be completed at a time, the construction period is shortened, the structure is simple, use is convenient, and the blockage removing effect is good.

The invention discloses high-strength and high-seawater-corrosion-resistance concrete and a preparation method thereof. The high-strength and high-seawater-corrosion-resistance concrete is prepared from 400 parts by mass of a cementing material, 1180-1200 parts by mass of coarse aggregate, 610-640 parts by mass of fine aggregate, 1.1-1.5 parts by mass of a water reducing agent and 175-185 parts by mass of water, wherein the cementing material comprises 310 to 325 parts by mass of iron aluminate cement and 75 to 90 parts by mass of fly ash, or 275 to 285 parts by mass of iron aluminate cement and 115 to 125 parts by mass of mineral powder, or 360 to 380 parts by mass of iron aluminate cement and 20 to 40 parts by mass of silica fume. According to the invention, the problems of poor durability and reduced strength of ordinary Portland cement and sulphoaluminate cement when being applied to ocean tidal zones are solved.

The utility model discloses a kind of glass electric melting furnace composite heat preservation structures, including glass electric melting furnace main body, the glass electric melting furnace main body is sequentially arranged from inside to outside working layer, transition layer, heat insulation layer and outer protective layer composition;The working layer is made of electric melting zirconia corundum brick, the transition layer is made of light mullite brick, the heat insulation layer is made of microporous heat insulation plate and ceramic fiber module, the ceramic fiber module covers in microporous heat insulation plate outside, the outer protective layer is made of galvanized steel sheet, by galvanized steel sheet play to the effect of moisture-proof and corrosion-proof, the ceramic fiber module is fixed in the inner side of outer protective layer by stainless steel anchor, air passage is arranged between the outer protective layer and heat insulation layer.The utility model effectively reduces the temperature of glass electric melting furnace main body surface, and reduces heat loss, realizes the integrated effect of heat insulation, heat preservation and sealing.

A method for synergistically preparing green Portland cement clinker by utilizing multi-element solid waste comprises the following steps: (1) obtaining raw materials of limestone, silica, phosphorite beneficiation powder, copper tailings, ferroalloy slag and coal-fired slag, burdening according to silicate, and mixing and grinding to obtain a raw material; (2) preheating the obtained raw material by a preheater, and then feeding the raw material into a decomposing furnace for decomposing; (3) calcining in a rotary kiln after decomposition to obtain green Portland cement clinker; the method has the beneficial effects that 1, the copper tailings are doped, so that the burnability of the raw material is improved, and the cost of the raw material is reduced; 2, the content of f-CaO in the clinker can be reduced, the compressive strength, compactness, water resistance and stability of the clinker can be improved, the quality of the clinker is improved, and the coal consumption of clinker sintering is reduced; thirdly, after the copper tailings are used for replacing a part of ferroalloy slag, the content of water-soluble hexavalent chromium in the cement is reduced; and 4, by doping the coal-fired slag, the grindability of the raw material can be improved, the quality of the clinker is improved, the coal consumption of clinker sintering is reduced, and the cost is reduced.

The invention provides a rubber composition for a tire sidewall, a rubber compound for the tire sidewall and a preparation method of the rubber compound. The rubber composition comprises the following components in parts by weight: 100 parts of rubber, 30-70 parts of carbon black, 2-20 parts of an anti-aging agent, 1-15 parts of an active agent, 0.5-4 parts of a vulcanizing agent, 0.5-6 parts of an accelerant and 1-10 parts of an auxiliary agent, the anti-aging agent comprises a p-phenylenediamine anti-aging agent, the p-phenylenediamine anti-aging agent is an anti-aging agent A with a structure as shown in a formula I and / or an anti-aging agent B with a structure as shown in a formula II, and a rubber compound prepared from the rubber composition with the number being # imgabs0 # or above has excellent physical performance and anti-aging performance and is more suitable for tire sidewall production. Besides, toxicity detection is carried out on rubber residues, and high-toxicity quinonized products are not detected after detection, so that the rubber composition for the tire sidewall is environment-friendly and non-toxic, and has good environmental protection performance.

This invention discloses an integrated mullite / rare earth silicate environmental barrier coating, its preparation method, and its application, belonging to the field of coating preparation technology. The environmental barrier coating is deposited on a C / C composite substrate, and from the surface of the C / C composite substrate outwards, consists of a SiC bonding layer, a mullite intermediate layer, and a rare earth silicate composite surface layer; the rare earth silicate composite surface layer is RE2SiO5-RE2Si2O7-RE3Al5O 12 RE can be Yb, Y, or Lu. The mullite intermediate layer and rare earth silicate composite surface layer are prepared by mixing SiC oxide powder with Al2O3 powder and RE2SiO5 powder with Al2O3 powder, respectively, into two slurries. These slurries are then applied layer by layer to the surface of the SiC bonding layer and dried, followed by in-situ heat treatment to form the composite layer. An in-situ reaction at the interface between the mullite intermediate layer and the rare earth silicate composite surface layer creates a component transition zone, exhibiting a multiphase structure where rare earth dual silicate phases are dispersed within the mullite framework. This environmental barrier coating addresses the technical problem of weak interlayer bonding and easy cracking during thermal cycling in existing coatings.