664 results about "Erosion resistance" patented technology

The present invention belongs to the field of resource utilization of building materials and solid waste, and relates to a red-mud-based cementing material based on efficient drying, component homogenization and activity improvement, and a preparation method therefor. The preparation method comprises: adding a filter aid to red mud to carry out sedimentation, then subjecting same to filter pressing until the water content is 14-16%, then drying the solid material, which has been subjected to filter pressing, until the water content is 4% or below, and finally grinding same to obtain the product. The filter aid comprises the following raw materials: 10-30 parts of polyaluminum chloride, 5-15 parts of polyaluminum sulfate, 1000-1200 parts of blast furnace slag or fly ash, 700-900 parts of steel slag, 400-600 parts of carbide slag or alkaline residues, and 300-400 parts of desulfurized gypsum or phosphogypsum or fluorgypsum. By means of the present invention, the dehydration efficiency of red mud can be improved, the red-mud-based cementing material can also be prepared in one step; the preparation process for the red-mud-based cementing material is simplified; and the prepared red-mud-based cementing material has the advantages of a high mechanical strength, high durability and erosion resistance.

The invention provides a concrete super-early-strength quick-hardening material, and relates to the field of building materials. The high-strength concrete comprises the following components in percentage by mass: 40%-50% of calcium aluminate, 30%-40% of gypsum, 8%-15% of high aluminum, 1%-3% of an additive, 3%-12% of an exciting agent and 1%-5% of an auxiliary material. According to the super-early-strength quick-hardening material provided by the invention, hour-level strength can be quickly and stably improved, and the strength increasing curve of each age is smooth and stable, so that the requirements of scenes such as road repair and tunnel construction on early strength can be met; it can be guaranteed that the 28-day compressive strength of the material breaks through 70 MPa, the later strength is kept stable, and the long-term safety of an engineering structure is guaranteed; the anti-seepage, anti-freezing and anti-erosion capabilities are realized in a complex environment, the service life of a project can be effectively prolonged, and the maintenance cost is reduced. In addition, the invention further provides a preparation method of the concrete super-early-strength and quick-hardening material, and the preparation method is used for preparing the super-early-strength and quick-hardening material provided by the invention.

According to the mullite castable preparation method based on comprehensive utilization of the secondary aluminum ash nonferrous smelting slag, components are regulated and controlled by controlling the molar ratio of Al2O3 to SiO2, so that porous light mullite stably falls into a mullite phase region, and generation of excessive corundum phases is avoided. PMMA microspheres, corn flour, carbonized rice husks and SiO2 coated calcium carbonate composite pore-forming agent systems are adopted, and a layered slurry formula, gradient slip casting and segmented sintering processes are combined, so that the porosity and strength distribution are accurately regulated and controlled, and low-temperature sintering and amorphous phase change control are realized. By optimizing the grading of the porous light mullite aggregate and adding the homologous fine powder, the bonding strength and compressive strength of the castable are improved. And finally, the surface of the castable is coated with a compact mullite coating, so that the porosity is reduced, and the erosion resistance, corrosion resistance and stripping resistance are remarkably improved. The obtained castable has the advantages of light weight, high temperature resistance, high strength, low cost and excellent thermal stability and erosion resistance.

According to the MoSi2 coating erosion rate prediction method based on the particle collision theory, a MoSi2 coating erosion rate prediction model is constructed based on the particle collision theory, and the dynamic damage process of a MoSi2 coating is simulated through a test measurement set obtained by carrying out a particle-containing high-temperature combustion gas flow erosion test. The mass loss of the MoSi2 coating formed under the erosion of the particle-containing high-temperature combustion gas flow is obtained, so that the prediction of the MoSi2 coating erosion rate prediction model is more accurate, and meanwhile, the limitation of a traditional erosion prediction model method on the characterization of a multi-factor coupling effect is broken through; in addition, the dynamic damage process of the MoSi2 coating is visualized by constructing a morphology graph prediction model, and a high-confidence-coefficient theoretical tool is provided for anti-erosion design of the MoSi2 coating.

The invention discloses a marine low-temperature concrete additive and a preparation method thereof, and belongs to the technical field of concrete admixtures. The marine low-temperature concrete additive is prepared from the following raw materials: silane / polymer hybrid modified silicon dioxide, anti-freezing fibers, an air entraining and water reducing agent, silica fume, sodium hexametaphosphate and calcium chloride. Through scientific proportioning of silane / polymer hybrid modified silicon dioxide, compound anti-freezing fibers and other components, on one hand, cement matrix interface bonding is enhanced, the integrity of the internal structure of concrete is improved, microcrack initiation in the freezing and thawing cycle process is reduced, and the surface hydrophilicity of the hybrid modified silicon dioxide is enhanced; according to the present invention, by adding the cross-linked polymer, the dispersibility can be improved, the pore structure of the concrete can be optimized, the macroporosity can be reduced so as to reduce the freeze-thaw damage risk and improve the freeze-thaw erosion resistance of the concrete, and the cross-linked network structure is formed in the cement matrix so as to improve the strength and the toughness of the concrete and enhance the freeze-thaw resistance.

The utility model relates to the technical field of inflatable hoses, in particular to a high-performance wear-resistant extremely-cold-resistant inflatable hose. The inflation hose comprises a metal corrugated pipe, the metal corrugated pipe is sleeved with a steel wire mesh sleeve, the steel wire mesh sleeve is sleeved with a long connecting pipe, the long connecting pipe is sleeved with a vulcanization layer, one end of the metal corrugated pipe is connected with a long inner cone connecting nozzle in an inserted mode, and the outer surface of the long inner cone connecting nozzle is sleeved with a nut in a threaded mode. And a long outer cone connecting nozzle is inserted into the other end of the steel wire mesh sleeve. The inflatable hose can meet the requirement of a dew point of-65 DEG C by adopting a metal corrugated pipe structure, can meet the requirements of 40MPa working pressure and 120MPa bursting pressure structure by adopting a steel wire mesh sleeve structure and adopting a high-pressure brazing form after double-layer weaving, and meanwhile, the vulcanization layer is arranged outside the long connecting pipe in a sleeving manner, so that the service life of the long connecting pipe is prolonged. Therefore, the inflatable hose has excellent oxidation resistance, ozone resistance and erosion resistance.

The invention relates to the field of water conservancy project dams, in particular to a construction method of a dam composite flexible diaphragm wall. 2, equipment is in place; thirdly, wall forming is conducted through a construction method, and the equal-thickness cement soil underground continuous wall is formed; fourthly, the anti-seepage core plate is inserted; the anti-seepage core plate is composed of a body, a plurality of bundles of optical fibers are distributed inside or on the outer surface of the anti-seepage core plate, and the optical fibers extend downwards in the length direction of the body and can monitor environmental changes of the body and the underground diaphragm wall around the body. A continuous and uniform dam composite flexible anti-seepage wall can be formed for a winding dike, the erosion resistance and disturbance resistance of the anti-seepage wall can be improved, the anti-seepage durability is improved, meanwhile, whether a seepage area exists in the continuous wall or not is monitored through the anti-seepage core plate, and early warning is provided for effectively taking precautionary measures in time.

The invention relates to the technical field of refractory materials, in particular to a magnesium-calcium-zirconium-carbon brick production method which comprises the following components in parts by weight: 60-80 parts of sintered magnesium-calcium-zirconium sand particles, 10-30 parts of fused magnesia particles, 2-4 parts of zirconium oxide, 0.5-3 parts of silicon carbide fine powder, 2-6 parts of nano yttrium oxide high-dispersion particles, 1-2 parts of C9 petroleum resin powder, 2-7 parts of graphite, 4-6 parts of binding agent and 0.3-0.5 part of urotropin. The rare earth material nano yttrium oxide high-dispersion particles are introduced, the magnesium-calcium-zirconium-carbon brick has the advantages of high temperature resistance, good hydration resistance, good thermal shock resistance, good oxidation resistance and good erosion resistance, the magnesium-calcium-zirconium-carbon brick is dried by an electric drying kiln as an unburned brick, a tunnel kiln firing process is omitted, the labor cost and energy consumption are reduced, and the production cost is reduced. And the emission of greenhouse gas and toxic and harmful gas generated by fuel combustion is avoided, and the biomass fuel is an environment-friendly product.

The utility model relates to a continuous pipe, belongs to the technical field of oil and gas development, and particularly discloses a scratch-resistant and erosion-resistant flexible composite continuous pipe which comprises a central pipe, a transition layer, a reinforcing layer, a tensile layer and an outer protective layer which are sequentially arranged from inside to outside, and a wear-resistant and erosion-resistant epoxy resin inner coating is sprayed on the surface of an inner cavity of the central pipe. The outer protective layer is made of a scratch-resistant alloy steel material, so that the strength of the whole pipe is improved; the transition layer is made of nitrile rubber; the reinforcing layer and the tensile layer are formed by weaving composite material belts reinforced by special fiber belts, and a signal cable and a power cable are fixedly arranged in the reinforcing layer and the tensile layer respectively. The composite material continuous pipe can obviously improve the scratch resistance and the fluid erosion resistance of the inner wall, is beneficial to saving materials, improves the utilization rate of the existing composite material continuous pipe material, and is suitable for various oil and gas exploitation.

The invention discloses a novel flexible ecological drainage ditch structure and a construction method thereof, belongs to the technical field of drainage ditch construction, and solves the problems of serious deformation and cracking of a traditional concrete drainage ditch. The structure specifically comprises an anti-corrosion layer, a drainage layer and an anti-seepage layer. The seepage prevention layer is arranged at the bottom of the drainage ditch, the drainage layer is laid on the seepage prevention layer, and the anti-corrosion layer is laid on the drainage layer. According to the drainage ditch, the innovative design of combining the anti-corrosion layer, the drainage layer and the anti-seepage layer is adopted, so that a lower seepage body is effectively drained, the ditch body strength is improved, the basic requirements of confluence, quick drainage and seepage prevention of the drainage ditch are met, and the overall shear resistance and erosion resistance of the drainage ditch are improved; the construction method is suitable for construction of loose accumulation body slopes such as slide slag accumulation body slopes, waste slag accumulation bodies and mine dumping sites; the method has the advantages of being high in plasticity, high in terrain adaptability, high in environment flexibility, good in structure flexibility and the like.

The invention discloses a concrete mortar material mix proportion optimization method and system, and belongs to the technical field of concrete mortar. The invention discloses a concrete mortar material mix proportion optimization method. The method comprises the following steps: S1, establishing an initial mix proportion model; s2, obtaining an initial concrete mortar material mix proportion scheme; s3, constructing a concrete mortar material mix proportion optimization model; and S4, obtaining the mixing proportion of the concrete mortar material. The problem that the proportioning ratio of concrete mortar materials cannot be optimized in the prior art is solved, the use amount of a cementing material can be reduced, the cost is further saved, the compression resistance and the tensile strength are enhanced, the permeability and the carbonation are reduced, the freeze-thaw resistance and the erosion resistance are improved, the service life is prolonged, the slump, the fluidity and the plasticity can be improved, and the concrete mortar is suitable for large-scale production. The preparation method is simple, economic loss is reduced, the material mixing ratio can be optimized according to carbon emission, carbon dioxide generated in the concrete mortar production process is reduced, and the environmental protection effect is improved.

The invention provides a solid waste-based cementing material and a preparation method thereof, and relates to the technical field of solid waste resource utilization and cementing material preparation. The cementing material is prepared by mixing and grinding 60-80 parts by weight of modified phosphogypsum and 20-40 parts by weight of an auxiliary material, and the auxiliary material comprises at least one of steel slag powder, fly ash, lithium slag and mineral slag; a preparation method of the modified ardealite comprises the following steps: carrying out microwave treatment on ardealite for 0.5-1 hour, mixing the treated ardealite with aluminum oxide, attapulgite and sodium lignosulphonate, adding a tetramethylammonium hydroxide solution, and drying to obtain the modified ardealite. According to the solid waste-based cementing material disclosed by the invention, the phosphogypsum is modified, so that the solid waste-based cementing material has the characteristics of high strength, stable cementing, strong erosion resistance and the like while the mixing amount of the phosphogypsum is increased.

The invention provides a hot-state repairing material and a preparation method thereof, and belongs to the technical field of refractory materials. The hot-state repairing material provided by the invention is prepared from the following raw materials in percentage by mass: 87 to 98 percent of waste bricks, 0.5 to 4.5 percent of magnesium mineral micro powder, 0.5 to 5.0 percent of slag powder, 0.5 to 2.0 percent of dispersing agent, 0.2 to 1.5 percent of organic fiber and 0.1 to 0.5 percent of binding agent. According to the invention, waste bricks are used as aggregates, contain tiny pores, provide channels for reaction gas for heating the hot-state repairing material, and can be rapidly sintered with a furnace lining; the slag powder can be matched with the binder to improve the thermal adhesion rate of the thermal repairing material; the magnesium mineral micro powder can improve the reaction activity, and the dispersing agent assists the combination effect of the slag powder, so that the repairing material can be sintered through rapid reaction, and the compression strength and the erosion resistance are improved; and the organic fibers can form good filling among particles and fine powder, so that the compression strength and the erosion resistance are improved.

The present invention discloses a polyurea-ceramic composite coating for the leading edge of a wind turbine blade and a preparation method thereof. The coating comprises aspartic acid ester polyurea and ceramics. The ceramics have good strength and hardness, and can improve the hardness and toughness of the coating as a whole, and improve the overall anti-rainwater erosion performance of the coating. Specifically, the polyaspartic acid ester polyurea is made of polyetheramine, diisocyanate, polyaspartic acid ester resin and isocyanate as raw materials, and the polyetheramine is a hydrophilic monomer, so that the system has good hydrophilicity, which is conducive to forming a water film on the leading edge surface of the wind turbine blade, and effectively buffering the impact of raindrops on the leading edge of the wind turbine blade.

An apparatus includes a strength member including a core formed of a composite material and an encapsulation layer disposed around the core. A conductor layer is disposed around the strength member. A coating is disposed on the conductor layer. The coating is configured to have a solar energy absorptivity of less than 0.5 at a wavelength of less than 2.5 microns at an operating temperature in the range of 60 DEG C to 250 DEG C, and a radiation emissivity of greater than 0.5 at a wavelength in the range of 2.5 microns to 15 microns. The coating may have an erosion resistance that is at least 5% higher than that of aluminum or aluminum alloys.

The invention relates to the technical field of construction material testing, and provides a tunnel construction material waterproof performance testing device which comprises a freezing and thawing test box, a machine box and a rack, a pressurized water injection system and a sealing slotting mechanism are arranged in the rack side by side, and the pressurized water injection system comprises a jack and a water pressure system; the jack is used for detecting the bearing load strength of the material test block, and the water pressure system is used for pressurizing water and detecting the waterproof performance of the material test block under high load. The tunnel construction material waterproof performance testing device integrates pressure resistance, erosion resistance, freezing resistance and waterproof performance detection tests on construction materials, can simulate the overall state of the construction materials in different tunnel environments to perform waterproof performance tests, so that the construction materials are added according to different tunnel requirements to improve the waterproof performance, and meanwhile, through the arrangement of the sealing slotting mechanism, the waterproof performance of the tunnel construction material is improved. The contact surface of the material test block and the water pressure system can be subjected to sealing waterproof treatment, and water is prevented from overflowing from the contact surface during water seepage detection.

The invention discloses sulfate-erosion-resistant metakaolin-slag-based geopolymer concrete, belongs to the technical field of concrete, and aims to solve the problems that the corrosion resistance of traditional silicate concrete is ineffective and the adaptability of conventional alkali-activated concrete is insufficient in a special environment. The concrete comprises the following components in parts by weight: 60-90 parts of a cementing material, 120-170 parts of aggregate, 15-30 parts of a composite activator, 2-8 parts of a function regulator and the like, the cementing material is prepared from nano TiO2 / KH-550 composite modified metakaolin, slag and silica fume-coal gangue powder-HAP composite powder; the aggregate comprises modified limestone macadam (soaked and dried by a sodium dihydrogen phosphate solution) and river sand; the composite exciting agent comprises water glass, sodium hydroxide, sodium pyrophosphate, propylene glycol and the like; the function regulator comprises superfine fly ash, a naphthalene water reducer, HPMC (Hydroxy Propyl Methyl Cellulose) and boric acid. Through the synergistic effect of the components, the sulfate corrosion resistance, the mechanical property and the environmental adaptation performance of the concrete are improved, and the concrete is suitable for engineering construction under the service environment of high-concentration sulfate and the like.

The invention belongs to the technical field of jet-type hydraulic down-the-hole hammer drilling tools, and relates to an involution type jet-flow element which is formed by involution of a jet-flow element plate A and a jet-flow element plate B. The jet-flow element plate A and the jet-flow element plate B are of a mirror symmetry structure. And an input channel, a left signal channel, a left control channel, an upper cavity emptying channel, a right control channel, a right signal channel, an output channel, a lower cavity emptying channel, a main nozzle, a split wedge fixing screw hole, an involution plate fixing pin hole A and an involution plate fixing pin hole B. According to the invention, the processing difficulty is reduced, the processing period is shortened, the processing cost is reduced, and the production efficiency is improved. According to the flow channel with the small depth-to-width ratio, the stress of a stress concentration area is reduced, the jet element is promoted to adopt a hard alloy with a lower mark and higher erosion resistance, then the erosion resistance of the jet element is improved, the service life of the jet element is prolonged, the small-depth-to-width-ratio oppositely-combined jet element provides possibility for design and machining of the jet element with the ultra-large width-to-depth ratio, and the design cost is reduced. And enough strength redundancy is provided.

The invention discloses a clay stabilizer for a high-temperature environment and a preparation method of the clay stabilizer, and belongs to the technical field of oil field oil extraction auxiliaries. The preparation method comprises the following steps: mixing and stirring quaternary ammonium salt modified silicon dioxide and modified acrylamide according to a mass part ratio of 1: (5-6) to obtain the clay stabilizer. The clay stabilizer is obtained by mixing quaternary ammonium salt modified silicon dioxide and modified acrylamide, so that not only is the anti-swelling performance improved, but also the scouring resistance is improved.

The invention relates to the technical field of ultra-high performance concrete high-strength performance detection, and particularly discloses an ultra-high performance concrete high-strength performance detection and analysis method. The method comprises the steps of concrete test piece performance detection grouping, concrete compressive strength performance analysis, concrete flexural strength performance analysis, concrete permeability resistance performance analysis, concrete chemical erosion resistance performance analysis and concrete high-strength performance evaluation. According to the method, whether the high-strength performance of the concrete reaches the standard or not is comprehensively evaluated from multiple aspects of compressive strength, breaking strength, permeation resistance and chemical erosion resistance, and the deformation conditions of the concrete test piece under the action of forces in different directions are displayed from multiple angles, so that the accuracy of compressive strength performance analysis of the concrete is improved; the chemical erosion resistance of the concrete is evaluated from the perspective of whether the compression resistance of the concrete after chemical erosion is changed or not, and the weakening degree of the chemical erosion on the mechanical bearing capacity of the concrete is accurately quantified.

The invention discloses a method for detecting softening resistance, chlorine salt erosion resistance and frost heaving resistance of aggregate, and relates to the field of performance detection of aggregate for pavement engineering, and the method comprises the following steps: obtaining image information of the preprocessed aggregate, carrying out partition processing on the image information by using an image partition processing technology, and obtaining a classification result of the aggregate according to a processing result; carrying out interval sampling on the aggregate based on the classification result, and carrying out identification analysis on the aggregate in combination with a directional tracking algorithm to obtain a grading result of the aggregate; carrying out softening resistance, chlorine salt erosion resistance and frost heaving performance tests on the aggregate, and summarizing the relationship between the aggregate color and the mass loss to obtain the mass loss result of the aggregate; and performing product performance fitting operation on the aggregate to evaluate the aggregate use performance satisfaction degree under the condition of a corresponding quality loss result so as to optimize the aggregate pretreatment process. According to the invention, softening resistance, chlorine salt erosion resistance and frost heaving performance tests are carried out on the aggregate to obtain the mass loss result of the aggregate, and the quality problem can be identified in advance.

The utility model belongs to the technical field of abandoned mine restoration, and particularly relates to an abandoned mine steep side slope slag pile horizontal anti-seepage and ecological reconstruction structure which comprises a reinforced concrete anti-seepage layer, a porous plant-growing concrete layer, a plant-growing bag layer and an active protective net which are sequentially arranged on the surface of a slag layer. The plant-growing bag layer is fixed on the slope surface through the active protective net and the anchor rod system, and plant seeds used for forming regreening vegetation on the surface of the plant-growing bag layer are arranged in the plant-growing bag layer. According to the utility model, a combined structure of the vegetation bag layer and the porous vegetation concrete layer is adopted, so that the growth space of the root system of the regreening vegetation is effectively extended, the water holding capacity of the plant growth matrix, the nutrition supply level of the plant and the wind and rain erosion resistance of the vegetation are remarkably improved, and the seepage-proofing and regreening effects are stable and lasting; meanwhile, the vegetation bag layer is stabilized through the active protective net and the anchor rod system, the stability of the structure is improved, and the structure is particularly suitable for seepage prevention and ecological reconstruction of steep slope slag piles.

The invention discloses a super-hydrophobic surface anti-scouring testing device and a testing method, relates to the technical field of super-hydrophobic treatment, and solves the problem of lack of a super-hydrophobic coating anti-scouring performance testing device suitable for a laboratory. A water tank communicates with an air compressor and a water pump; an objective table is arranged at the bottom in the water tank, a linear nozzle is arranged at the top in the water tank, and the objective table is opposite to the linear nozzle; a ducted fan is arranged on the linear nozzle, and the ducted fan is used for blowing the test sample; a motor is arranged on the side wall of the water tank, and a lead screw is arranged at the output end of the motor and provided with a drainage block. The water pump communicates with the bottom of the water tank through a water inlet pipe and communicates with the linear nozzle through a water outlet pipe. According to the method, environmental variables are controlled, so that the test of the super-hydrophobic reagent is standardized and easy to operate; the device can provide super-hydrophobic reagent test conditions of an underwater scene to meet super-hydrophobic reagent development and test requirements of underwater navigation bodies, ships and other underwater equipment in actual research.

The invention discloses a soil erosion resistance prediction method and system based on earth surface parameters, and relates to the technical field of soil erosion and water and soil conservation monitoring and prediction, and the method comprises the steps of earth surface parameter collection, parameter preprocessing, erosion response modeling, erosion resistance threshold tensor inversion and erosion resistance prediction. Collecting multi-source earth surface parameter data; secondly, constructing a unified earth surface parameter feature set; obtaining erosion response simulation data by adopting an erosion response modeling method combining physical process simulation and lightweight machine learning residual correction; an explicit Bayesian neural network and a variational reasoning framework are constructed, observation data are combined, and a four-dimensional anti-corrosion threshold tensor is obtained through inversion; introducing a double-branch space-time multi-task fusion prediction model of an anti-erosion threshold tensor, and outputting a prediction value and a prediction grade of the soil anti-erosion capability; according to the scheme, dynamic and spatial prediction of the erosion resistance of the soil can be realized, and a scientific basis is provided for water and soil conservation and ecological environment management.

The invention discloses a preparation method of nano sepiolite fibers, which comprises the following steps: acidizing sepiolite by a hydrothermal synthesis method to enable the interior of the sepiolite to have mutually communicated holes, and loading SiO2 particles on the surface of the sepiolite to prepare the nano sepiolite fibers; the sepiolite is modified, the specific surface area of the sepiolite is increased, the sepiolite is used for the steel structure water-based acrylic acid anti-corrosion coating in the inland wharf environment, good compatibility with water-based acrylic acid emulsion is achieved, and the tensile strength and the erosion resistance of the coating can be improved.

The invention relates to the technical field of building repairing materials, and particularly discloses an anti-impact and wear-resistant repairing material and a preparation method thereof.By optimizing the content of all the components of the raw materials, the prepared repairing material has excellent anti-erosion performance and wear-resistant performance, Portland cement serves as a main cementing material, and the anti-impact and wear-resistant performance of the repairing material is improved; basic strength and cohesiveness are provided; fly ash and silicon powder synergistically enhance compactness and durability; quartz sand is used as wear-resistant aggregate, so that the compression resistance and the wear resistance are improved; the toughness and the impact resistance are enhanced by the composite modified carbon fibers; the redispersible latex powder improves the flexibility and the binding power; the polycarboxylate superplasticizer optimizes the flowability and improves the compactness; and the defoaming agent reduces pore defects and ensures material uniformity. The repair material provided by the invention is suitable for repair engineering needing to bear mechanical shock or wear environment, and has good construction performance.

The invention discloses an impact corrosion and wear resistance test device and a use method, and relates to the technical field of test equipment. The impact corrosion and wear resistance test device comprises a test tank body, a corrosion assembly, a wear assembly and an impact assembly, wherein the test tank body is provided with an accommodating space; the corrosion assembly comprises a discharge part, and the discharge part is arranged in the test tank body and is used for injecting a corrosion medium into the accommodating space; the abrasion assembly comprises a friction piece and a first driving piece, the friction piece is arranged in the containing space and makes contact with the sample, and the first driving piece drives the friction piece to move relative to the sample; the impact assembly comprises an impact hammer and a second driving piece, and the second driving piece drives the impact hammer to intermittently impact the friction piece, so that impact pressure is transmitted to the sample through the friction piece. According to the impact corrosion and wear resistance testing device, three working conditions of corrosion, impact and wear are coupled to act on the sample, and the accuracy and reliability of part performance evaluation are improved.

The invention discloses a 3D printing concrete quality regulation and control method, which comprises the following steps: S1, obtaining a plurality of same to-be-detected 3D printing concrete and component proportions, and flattening to form a cubic test piece; s2, obtaining the setting time of the concrete; s3, carrying out a penetration test on the solidified concrete to obtain the height of a water mark; s4, carrying out anti-erosion test on the solidified concrete to obtain the mass conversion amount and the volume conversion amount of the concrete; s5, testing the compressive strength of the solidified concrete to obtain crack occurrence time and crushing time; s6, changing the proportion of each component of the concrete, and repeating a plurality of groups of experiments to obtain detection values of the plurality of groups of experiments; s7, calculating values obtained by multiple groups of experiments to obtain an average value; and S8, comparing different detection values of different components with the average value to obtain the most suitable concrete. The stability of the performance of the concrete required by 3D printing is ensured, and the problems of cracks, water seepage and the like caused by improper mixing proportion are avoided.

The invention relates to the field of high-temperature refractory materials, and discloses a fusion casting method for improving the performance of an AZS octagonal cylinder checker brick, which comprises the following steps: mixing and smelting main raw materials and a composite additive (containing surface-modified nano YAG particles and a rare earth core-shell structure) to obtain a high-purity melt in an inert atmosphere; staged vibration pouring is conducted in the vacuum environment, low-frequency vibration and high-frequency vibration are combined, and the melt filling compactness is improved; an alternating magnetic field is coupled in the gradient cooling process, grain growth is directionally regulated and controlled, and thermal stress is released; and annealing treatment is combined with a surface densified coating, so that the defects are further eliminated, and the erosion resistance is enhanced. According to the invention, through linkage of technologies such as strengthening of a crystal boundary by the composite additive, collaborative optimization of a structure by vibration-magnetic field, inhibition of phase change by a gradient process and the like, the material has excellent thermal shock resistance, high-temperature strength and molten medium corrosion resistance, and is suitable for harsh working conditions such as glass kilns and metallurgical high-temperature equipment.

The invention relates to a low-sodium low-silicon fused zirconia corundum brick and a preparation method thereof, and relates to the technical field of refractory materials. The low-sodium low-silicon electric smelting zirconium corundum brick is prepared from the following raw material oxides in percentage by weight: 30 to 45 percent of ZrO2, 9.0 to 12 percent of SiO2, 0.1 to 1.0 percent of Cr2O3, 0.9 to 1.6 percent of Na2O + K2O + CaO, 0.3 to 2.0 percent of mixed rare earth oxide and the balance of Al2O3 and inevitable impurities. By introducing a proper amount of Cr2O3 and mixed rare earth oxide and controlling the composition of a glass phase, the number of baddeleyite-corundum eutectic and the viscosity of the glass phase are improved, the erosion resistance and resistivity of the zirconia corundum brick are further improved, the safe service life of a glass kiln is prolonged, meanwhile, the performance of a glass product is also improved, and the application prospect is wide. And defects on the glass surface are reduced.