35 results about "Material Erosion" patented technology

The invention belongs to the technical field of erosion corrosion experiment testing, and particularly discloses an erosion corrosion experiment device and method for liquid-solid two-phase flow immersion jet flow, a cooling system is designed for solving the problem that the temperature of an erosion corrosion solution is increased due to the throttling effect, the heat dissipation area of a circulating erosion system is increased through finned tubes, and the heat dissipation efficiency is improved. And the erosion corrosion solution flowing through the finned tube can transfer heat to the liquid in the heat exchange groove, so that the temperature of a fluid medium of the erosion corrosion solution in the circulating erosion system is reduced. According to the invention, the included angle between the sample and the nozzle can be changed through the angle adjusting mechanism so as to test the material damage condition under the impact of different angles and different flow velocities, so that the real-time monitoring of the electrochemical process of the liquid-solid two-phase flow damaged material is realized; the erosion corrosion damage process and mechanism of a material in a multiphase flow environment can be researched conveniently, and gas can be injected into the immersion jet tank through the gas storage bottle and the gas injection pipe so as to realize an under-pressure experiment for dissolving acid gas.

This invention discloses a method, equipment, medium, and product for quantitatively assessing the risk of erosion damage to pressure equipment, relating to the safety of pressure equipment in the petrochemical and chemical industries. The method includes: determining the damage form of the equipment; calculating a local / uniform thinning factor based on the damage form; calculating an equipment correction coefficient based on the local / uniform thinning factor, a general condition factor, a mechanical factor, and a process factor; calculating the probability of erosion corrosion failure based on the equipment correction coefficient, a management system evaluation coefficient, the average failure probability of similar equipment, and an impact coefficient for defects exceeding standards; calculating the leakage consequence area; determining the consequences of erosion corrosion failure based on the leakage consequence area; and establishing a two-dimensional risk matrix based on the probability of erosion corrosion failure and the consequences of erosion corrosion failure. The two-dimensional risk matrix is ​​used for real-time quantitative assessment of erosion risk. This invention can effectively guide the prevention and control of erosion corrosion risks in the petrochemical and chemical industries.

This utility model relates to the field of biogas hydrogen sulfide pipeline technology and discloses a protective structure for biogas hydrogen sulfide pipeline corrosion, including a transmission pipeline and a fixing sleeve. A spraying mechanism is fixedly installed on the side of the transmission pipeline, and a flow rate regulating mechanism is fixedly installed on the inner wall of the fixing sleeve. The flow rate regulating mechanism includes a bend, and a connecting block is fixedly installed on the inner wall of the bend. First, the speed of the drive motor is adjusted by the controller, thereby adjusting the flow rate generated when the fan blades rotate. Then, the drive motor is turned on, and the rotation of the drive motor drives the fan blades to rotate, thereby drawing air from outside the bend into the bend. The air is then diverted through the bend and split into eight transmission pipes, and then transmitted through a filter plate to the inside of the transmission pipeline. This adjustment of the flow rate inside the transmission pipeline helps to reduce the corrosiveness of hydrogen sulfide to the transmission pipeline. By controlling the upper limit of the flow rate, erosion corrosion is minimized, thus improving the protection of the transmission pipeline.

The application discloses a kind of test device and method for general erosion corrosion in fast reactor coolant environment, it is related to nuclear power material testing technical field, including corrosion kettle, heating device, stirring device and object table, heating device is used to heat corrosion kettle, stirring device includes rotary drive device and stirring assembly, the fixed end of rotary drive device is fixedly arranged on corrosion kettle, the driving end of rotary drive device is fixedly connected with stirring assembly, stirring assembly is inserted into corrosion kettle, for stirring the cooling medium in corrosion kettle, object table is arranged in corrosion kettle for carrying corrosion sample, gas inlet is provided on corrosion kettle, gas inlet is used to pass into hydrogen gas or oxygen gas mixture, to adjust the oxygen concentration in corrosion kettle.The application can truly reproduce the environment of flow medium erosion, corrosion deterioration and oxygen concentration synergistic effect under actual working condition.

The invention relates to the field of oil and gas well drilling and production, and discloses experimental equipment for simulating erosion corrosion of an oil and gas well at high temperature and high pressure and a use method thereof. The experimental equipment comprises an erosion corrosion fluid module, a corrosion fluid module, a reaction kettle and a damage analysis module. The erosion corrosion fluid module is used for manufacturing an erosion corrosion fluid material; the corrosive fluid module is used for manufacturing corrosive fluid materials. The reaction kettle is provided with a reaction chamber for mounting an experimental object, and the experimental object is a combined body comprising an oil pipe, a sleeve and a cement sheath; the experimental object and the reaction chamber act together to form a first chamber in the oil pipe and communicated with the erosion corrosion fluid module, a second chamber located between the oil pipe and the casing pipe and communicated with the erosion corrosion fluid module, and a third chamber located between the casing pipe and the cement sheath and communicated with the erosion corrosion fluid module. And the damage analysis module is used for analyzing the experimental object and obtaining an erosion-corrosion analysis result of the experimental object, so that the erosion-corrosion resistance test experiment of the material under the complex underground working condition is completed.

The invention discloses an erosion corrosion early warning method, device and equipment for a tail gas pipeline of a reduction furnace. The method comprises the following steps: firstly, acquiring multi-source real-time data of a target monitoring point in the tail gas pipeline of the reduction furnace; based on the multi-source real-time data, obtaining a future silicon powder mass concentration prediction sequence and a future airflow velocity prediction sequence; inputting the data into a pre-constructed dynamic wear rate model and an effective impact energy accumulation model, and respectively calculating to obtain a first future pipe wall residual thickness sequence and a second future pipe wall residual thickness sequence; comparing the predicted pipe wall residual thickness at each future moment in the future pipe wall residual thickness sequence with a preset pipe wall residual thickness safety threshold, and determining a first predicted residual life and a second predicted residual life; and finally, based on the first predicted residual life and the second predicted residual life, generating early warning information of the pipeline eroded and corroded by the silicon powder. According to the invention, high-precision and foresight early warning of the erosion corrosion risk of the tail gas pipeline of the reduction furnace can be realized.

The invention provides a method and a device for accurately controlling and detecting sand content in an erosion experiment, and relates to the technical field of pipeline multiphase flow erosion corrosion, the device comprises a sand amount control part used for adjusting the sand adding amount of solid sand, so that a medium solution and the solid sand are uniformly mixed to obtain a sand-containing solution; and the sand amount detection part is used for detecting the sand content of the sand-containing solution. The invention provides the method and the device for controlling and detecting the sand content, which are simple, accurate and easy to realize. When the method and the device are applied to the pipe flow test, the problems of sand deposition, uneven sand distribution in a solution medium and the like are solved, the real flowing and scouring conditions of the pipeline are accurately reduced, and a foundation is laid for accurately analyzing the scouring corrosion mechanism.

The invention relates to the technical field of road engineering materials, and discloses an erosion function tester for highway subgrade filler hydraulic erosion, which comprises a water pump, the pressure pipeline and the water pump form a water flow loop; the electromagnetic flowmeter is used for measuring the water flow velocity; the sample pipe is used for accommodating a sample and is mounted at the lower part of the pressure pipeline; the soil jacking piston is used for jacking out the sample in the vertical direction; the erosion monitoring system is used for monitoring the surface elevation change of the sample in a non-contact manner; the data processing system is electrically connected with the electromagnetic flowmeter, the erosion monitoring system and the water pump and controls the water pump to generate a preset water flow velocity; and calculating the water flow shear stress acting on the surface of the sample according to the water flow velocity measured by the electromagnetic flowmeter. Friction resistance coefficients and shear stress are calculated through a Muslim diagram fluid mechanics relation, and full-chain quantitative analysis from water flow parameters to material erosion characteristics is realized in combination with a non-contact laser monitoring technology.

The application discloses a safety measurement method, device and equipment of a multiphase flow pipeline and a medium, relates to the technical field of oil exploitation, and comprises the following steps: applying an alternating excitation signal to different electrode systems arranged on a target pipeline to obtain first electric impedance spectrum data and second electric impedance spectrum data of the target pipeline in a multiphase flow state. The first electric impedance spectrum data is converted into a complex dielectric constant, and a relaxation frequency is determined from the complex dielectric constant; according to the relationship between the relaxation frequency and the particle size, the crystal particle size is determined. According to the crystal particle size and the erosion time, the erosion loss is determined. The equivalent circuit model matched with the second electric impedance spectrum data is fitted to determine the corrosion characteristics. Based on the electric impedance spectrum technology, the accurate measurement of the particle size and the erosion corrosion of two scenes is realized, the method has the characteristics of simple operation, non-invasiveness and high measurement precision, and the safety transportation of the two-phase flow pipeline is ensured.

The invention belongs to the technical field of indirect air cooling system equipment protection, and relates to a preparation method of an SCAL type indirect air cooling system aluminum heat exchange pipe orifice and an aluminum heat exchange pipe. According to the invention, the aluminum heat exchange pipe orifice is designed into the horn mouth with a certain taper, so that the fluid dynamic condition of the pipe orifice is changed, and the flow erosion corrosion rate of the pipe orifice part is favorably reduced. The horn mouth length is obtained according to the original pipe diameter and the horn mouth taper, the horn mouth length is reasonably determined, and it is guaranteed that the horn mouth shape can fully play a role in reducing the flow erosion corrosion rate. And carrying out laser cladding on the horn mouth of the aluminum pipe orifice by adopting nickel-based alloy powder. And a nickel-based alloy coating is formed on the surface of the horn mouth of the aluminum pipe orifice, so that the wear resistance and corrosion resistance of the surface of the pipe orifice are enhanced. Through innovative design of the pipe orifice structure and strengthening treatment of the surface, the flow erosion corrosion rate of the pipe orifice part is remarkably reduced, and long-term protection of flow erosion corrosion of the aluminum heat exchange pipe orifice is facilitated.

The present application relates to the technical field of metal material corrosion and protection, and particularly relates to a non-passivated metal material erosion corrosion evaluation method based on time-performance coupling, comprising setting test conditions and data collection schemes; synchronously collecting time-performance data; quantitatively determining three critical time nodes for dividing the whole erosion corrosion cycle into stages of different failure risk levels as the quantitative demarcation points of time-performance coupling; dividing the whole erosion corrosion cycle into risk stages; and performing comprehensive evaluation. The present application has the following advantages: based on the nonlinear evolution characteristics of the erosion corrosion damage mechanism, a dynamic evaluation system of time-performance coupling is established, the whole erosion corrosion cycle is divided into stages of different risk levels by quantitatively determining three critical time nodes, the precise mapping of the time dimension and the material performance attenuation process is realized, and the key problem that the traditional method cannot reflect the whole process behavior of the material from the initial damage to the final failure is solved.

The present application relates to the technical field of shale oil fracturing construction, and particularly relates to a fracturing construction process pretreatment method for ensuring the success rate of shale oil fracturing construction. The method comprises the following steps: performing acid squeezing treatment on shale oil mud before fracturing; based on material erosion theory and a fracture fluid flow model, a dynamic optimization adjustment model of fracturing construction parameters in the low sand ratio slug stage is established; the rock core elastic modulus and Poisson's ratio of the reservoir are measured through indoor rock mechanics experiments; the viscosity and density of the fracturing fluid are measured; the elastic modulus, Poisson's ratio and diameter of the proppant particles are obtained; the obtained parameters are brought into the model in step 2, and the proppant concentration and the fracturing fluid viscosity that can ensure the maximum ER erosion efficiency are obtained in combination with the sand carrying performance of the fracturing fluid. Through effective channel establishment technology and fracture widening and filtration reduction technology, the success rate of shale oil well fracturing construction can be improved.

The application discloses a liquid lead and bismuth erosion corrosion resistant composite coating and a preparation method and application thereof, and relates to the technical field of surface protection. The method comprises the following steps: spraying a FeCrAlY coating on the surface of a substrate, performing remelting treatment and light finishing treatment on the FeCrAlY coating, and pre-oxidizing the coating. The FeCrAlY coating is sprayed on the surface of the substrate, and then the FeCrAlY coating is subjected to remelting treatment, so that the interlayer interface between the particles in the FeCrAlY coating disappears, and the effect of hole sealing is achieved. The light finishing treatment can polish the coating on the surface of the substrate to be flat. When the liquid lead and bismuth eutectic alloy flows, circulates and cools, the erosion corrosion effect of the liquid lead and bismuth eutectic alloy on the coating is reduced, and the service life of the coating is prolonged. Finally, the pre-oxidation treatment is performed on the surface of the coating, a continuous and dense thermal growth oxide layer is generated in situ on the surface of the coating, the wettability of the liquid lead and bismuth alloy is effectively reduced, and the long-time service stability is improved.

The invention discloses a method, a device, equipment and a medium for determining the erosion rate of an engine material, and relates to the technical field of engine analysis, the method for determining the erosion rate of the engine material comprises the following steps: determining the radiance of target metal according to a characteristic spectral line of the target metal in an engine plume spectrum; wherein the target metal is a composition of the engine; in combination with the radiation brightness of the target metal and the engine plume data, carrying out atomic number density inversion on the target metal in the engine plume, and determining the atomic number density of the target metal in the engine plume; in combination with the atomic number density and the engine plume data, combustion chemical equilibrium calculation is conducted on the engine plume, and the total concentration of the target metal in the engine plume is determined; and determining the erosion rate of the engine material according to the total concentration of the target metal in the engine plume. The method can quantify the erosion rate of the structural material of the engine during the cycle operation of the engine.

The embodiment of the invention provides detection equipment. The detection equipment comprises a container, a power mechanism and a sample wafer bracket, the container is used for accommodating a liquid-cooled working medium. The power mechanism comprises a rotating shaft and fan blades, the fan blades are located in the liquid cooling working medium, and the rotating shaft can drive the fan blades to rotate so that the liquid cooling working medium can flow in the container and form vortexes. The sample wafer bracket is used for placing at least one layer of sample wafers, each layer of sample wafers comprises a plurality of sample wafers, the plurality of sample wafers are distributed at intervals along the circumferential direction of the rotating shaft, and the sample wafer bracket is positioned between the fan blades and the container along the radial direction of the rotating shaft, so that the sample wafers are positioned in the eddy current of the liquid cooling working medium. According to the detection equipment provided by the embodiment of the invention, the problem of low accuracy of detection data of the detection equipment on the erosion corrosion of the liquid cooling working medium on the cold plate in the related technology is solved.

The invention discloses a gas-liquid-solid three-phase porous jet erosion corrosion experimental device and experimental method, and belongs to the technical field of erosion corrosion experimental testing. The experimental device comprises a jet system, a sand adding system and a gas injection system, the jet system comprises a jet chamber, and a bearing device for mounting a sample to be tested is arranged in the jet chamber; a jet main pipeline is arranged on the jet chamber, the tail end of the jet main pipeline is connected with a nozzle, and the outlet center of the nozzle is over against the surface center of the to-be-tested sample; the sand adding system comprises a sand bearing measuring cylinder, and a bottom outlet of the sand bearing measuring cylinder is communicated with the top of the jet flow main pipeline; the air injection system comprises an air compressor, and the air compressor is connected with a liquid input pipeline through an air injection pipeline; the to-be-tested sample is connected with a copper conductor to serve as a working electrode, and a counter electrode and a reference electrode are further arranged in the jet chamber. The device can be used for gas-liquid-solid three-phase jet flow experiments and under-pressure / non-under-pressure experiment tests, and has wider and practical functions.

The utility model relates to the technical field of pipelines, and provides a pipeline spiral elbow with strong bearing capacity, which comprises an elbow body, connectors are fixed at two ends of the elbow body, a reinforcing structure is fixed on the outer wall of the elbow body, and a turbulent flow structure is arranged on one side in the elbow body. The turbulent flow structure is arranged, the turbulent flow pieces are symmetrically distributed in an inclined mode, fluid can be guided to flow spirally, turbulent flow and vortex are reduced, pressure loss is reduced, conveying efficiency is improved, a flow guide system composed of the center piece and the limiting pieces can evenly distribute fluid impact force, local erosion corrosion is avoided, and the service life of the elbow is prolonged. According to the pipeline spiral elbow with the high bearing capacity, the limiting block is connected with the elbow body in a clamped mode through the limiting groove, the damaged turbulent flow assembly can be conveniently and rapidly disassembled and replaced, the maintenance cost is reduced, the device has the functions of turbulent flow of liquid in the pipe and convenient and rapid disassembly, and the service life of the pipeline spiral elbow with the high bearing capacity is prolonged.

The application provides a multiphase flow erosion corrosion test device and method. In the multiphase flow erosion corrosion test device: a plurality of gas tanks are connected with a plurality of pressure regulating valves one by one, the plurality of pressure regulating valves are connected with a gas storage tank, the gas storage tank is connected with a pressure reducing valve, the pressure reducing valve is connected with an adjustable flow valve, the adjustable flow valve is connected with a first heater, the first heater is connected with a first ball valve; a second ball valve is connected with a second heater, the second heater is connected with a mud pump, the mud pump is connected with a solid-liquid mixing tank; a third ball valve is connected with a booster pump, the booster pump is connected with a third heater, the third heater is connected with a fourth ball valve and a fifth ball valve respectively, the fourth ball valve and the fifth ball valve are connected with an erosion cavity and a test pipeline one by one; the third ball valve is connected with the first ball valve and the second ball valve respectively.

The invention provides a performance analysis method, device and equipment of a cemented riprap protection structure and a medium, and relates to the technical field of performance testing of cemented riprap protection structures. The problems that in the prior art, the macroscopical scouring form and material performance evolution are disjointed, and a short-term test result cannot reflect decades of service periodic performance attenuation, so that a quantitative relation between material degradation and structure failure cannot be established, and long-term protection performance prediction is difficult to achieve are solved. Scouring pit volume evolution data are obtained through a water tank model test, a strength attenuation model is built in combination with a material erosion test, scouring damage under the wave current load effect is equivalent to material erosion time, the material strength is corrected in real time based on the equivalent damage age, and finally a scouring pit development rate model is built to predict the long-term protection performance.

The invention provides a circuit breaker contact ablation prediction method, system and device and a medium. The method comprises the steps that spectral data of electric arcs between circuit breaker contacts are collected; processing the spectral data through a first non-orthogonal Gaussian processor to obtain a first processing result; extracting wavelength domain parameters; wherein the first non-orthogonal Gaussian processor is a wavelength domain processor; processing the wavelength domain parameter through a second non-orthogonal Gaussian processor to obtain a second processing result; extracting time domain parameters; wherein the second non-orthogonal Gaussian processor is a time domain processor; acquiring a mass loss parameter corresponding to the circuit breaker contact; and selecting a solving parameter, and substituting the mass loss parameter and the solving parameter into the linear regression model to realize the prediction of the ablation of the circuit breaker contact. According to the method, the characteristic spectral line information of the material elements in the spectrum can be effectively mined, and the material ablation degree is deduced by analyzing the spectral information, so that the accuracy of predicting the ablation of the circuit breaker contact is effectively improved.

The present application relates to a kind of regeneration tower corrosion prevention and control method, comprising the following steps: S1, to the regeneration tower is carried out multiphase flow software simulation extraction regeneration tower different parts several positions flow field parameters calculate chemical corrosion and erosion corrosion;S2, to the regeneration tower accessory pipeline is carried out multiphase flow software simulation extraction regeneration tower accessory pipeline different parts several positions flow field parameters calculate chemical corrosion and erosion corrosion;S3, according to the analysis data of step S1 and step S2, the corrosion risk behavior analysis of regeneration tower and its accessory pipeline is carried out, confirms that chemical corrosion is mainly function;S4, according to the analysis result of step S3, by reducing the concentration of hydrogen sulfide in water to reduce the rate of chemical corrosion, by improving temperature to reduce the concentration of hydrogen sulfide dissolved in water to improve process conditions;S5, the process conditions of regeneration tower after step S4 are improved are used in alcohol amine method desulfurization system.A beneficial effect is that the corrosion of regeneration tower in alcohol amine method desulfurization system is relieved, prevention and control.

This utility model belongs to the field of material erosion testing technology, and particularly relates to an equivalent test device for compressor blade erosion. It includes a compressed air pump, a sand tank, an erosion pipe, an erosion chamber, and a sample holder. The sample holder is characterized by having a sample slot sealed on three sides, with a baffle on the open side of the slot. The sample holder has ear plates on both sides; one ear plate is movably connected to the side wall of the erosion chamber via a half-shaft, and the other ear plate is movably connected to the opposite side wall of the erosion chamber via a half-shaft. The outer end of either half-shaft is connected to the output shaft of a worm gear reducer, which is mounted on the outer side wall of the erosion chamber. The beneficial effects of this utility model are: by accurately controlling the quality of the abrasive material flowing over the surface of the flat material sample, it achieves precise simulation of the erosion effect, providing accurate data support for equivalent analysis, which is beneficial for guiding material optimization and ultimately extending the service life of compressor impeller products.

This invention proposes a performance analysis method, apparatus, equipment, and medium for cemented riprap protective structures, relating to the field of performance testing technology for cemented riprap protective structures. Addressing the shortcomings of existing technologies in studying gridded cemented riprap, such as the disconnect between macroscopic scour morphology and material performance evolution, and the inability of short-term test results to reflect performance degradation over decades of service, which prevents the establishment of a quantitative relationship between material degradation and structural failure and hinders long-term protective performance prediction, this invention obtains scour pit volume evolution data through flue model tests, establishes a strength attenuation model by combining it with material erosion tests, equates scour damage under wave-current loading to material erosion time, and corrects material strength in real time based on the equivalent damage age, ultimately constructing a scour pit development rate model to predict long-term protective performance.

The present application belongs to the technical field of pipeline erosion corrosion and electrochemical corrosion measurement, and particularly relates to a multi-angle erosion corrosion and in-situ electrochemical testing device, which maintains the basic characteristics of the pipeline as a whole, the flow state in the pipeline is close to the actual pipeline flow state, and the main structure comprises an outer sleeve, an inner sleeve arranged in the outer sleeve, a reference electrode arranged on the outer sleeve, a working electrode and an auxiliary electrode arranged on the inner sleeve, and an electrochemical workstation connected with the reference electrode, the working electrode and the auxiliary electrode, can effectively simulate the actual working condition of the pipeline, realize the fixed erosion angle erosion corrosion test of the metal sample and the coating sample, can perform the weight loss and electrochemical measurement, and can realize the erosion corrosion test of the metal sample and the coating sample under the cathodic protection state, obtain the corrosion data of the sample under the cathodic protection, and in addition, the positions of the working electrode, the auxiliary electrode and the reference electrode are fixed, do not have a significant impact on the flow state, and are beneficial to the stability of the electrochemical test process.

The application relates to a resistance probe for material corrosion monitoring, which comprises a shell and a reference electrode and a corrosion electrode arranged in series on the shell, the reference electrode is sealed in the shell by being isolated from the outside through a packaging medium, and the corrosion electrode is exposed outside the shell; the corrosion electrode is a continuous non-overlapping coiled curve line structure in one working plane of the shell; the application increases the length of the corrosion electrode through the "Omega" type design, so that the cross-sectional area of the electrode can be increased under the condition that the resistance change is the same, the failure resistance of the electrode to the damage caused by local corrosion of the probe is enhanced, the cross-sectional area of the corrosion electrode is increased, the measuring element is not affected by the machining process during the preparation process, the material surface state of the measuring element is different from the surface state of the monitored equipment, and therefore the health state of the equipment can be more accurately reflected.

The invention discloses a double-channel deslagging device of a molten pool smelting furnace, and belongs to the technical field of non-ferrous metal smelting equipment. The slag discharging device comprises a slag inlet pipe, one end of the slag inlet pipe is communicated with a first slag discharging pipe and a second slag discharging pipe, the first slag discharging pipe, the second slag discharging pipe and the slag inlet pipe form a Y-shaped structure, the first slag discharging pipe and the second slag discharging pipe are symmetrically distributed with the axis of the slag inlet pipe as the symmetry axis, and the first slag discharging pipe and the second slag discharging pipe are obliquely arranged downwards; the positions of slag outlets of the first slag outlet pipe and the second slag outlet pipe are lower than the other ends of the first slag outlet pipe and the second slag outlet pipe, and a spherical crown flow blocking weir protruding outwards is arranged between the first slag outlet pipe and the second slag outlet pipe. The device can effectively reduce the flow speed of the slag, relieve erosion corrosion and splashing conditions generated in the slag discharging process, and prolong the service life of components such as the slag groove.

The application discloses a kind of basic refractory performance pre-evaluation test methods, belongs to analytical test method technical field.The application can effectively simulate the high temperature, multi-medium erosion working condition that it endures in actual kiln service environment by being made into the crucible body with specific cavity and filling erosion medium to the basic refractory to be measured, and the section is obtained by cutting the crucible body after simulation service, can be directly observed and analyzed erosion depth and erosion morphology by section, provides direct, reliable basis for evaluating material erosion resistance.Compared with traditional physical and chemical index detection, the pre-evaluation method of the application can truly, accurately reflect the performance of material in actual application environment, can effectively evaluate the use performance of basic refractory, provide reliable basis for screening qualified material and prolonging the service life of basic refractory in coke powder fuel regenerator.

The invention discloses a steelmaking process for controlling non-metallic inclusions of a structural steel continuous casting billet for low temperature, and belongs to the technical field of steel, and the steelmaking process specifically comprises the following steps: S1, molten iron pretreatment: controlling the sulfur content of molten iron entering a furnace; s2, converter smelting is conducted, the slag alkalinity at the converter smelting end point is controlled to range from 4 to 7, the phosphorus content at the end point ranges from 0.003% to 0.01%, slag stopping is conducted during tapping, and aluminum is added in the tapping process for preliminary deoxidation; s3, LF refining, wherein lime is adopted for slagging, and an aluminum deoxidizer is adopted for desulfurization operation; s4, RH refining is conducted, aluminum is added into the molten steel before vacuum treatment, the target value of acid-soluble aluminum in the molten steel is adjusted to be 0.020%-0.070%, the vacuum treatment time is 15-35 min, and a calcium line is fed in the RH procedure; s5, continuous casting production is conducted, whole-course protection pouring is adopted, a slag stopping wall and a slag stopping dam are arranged in a tundish, a magnesium-aluminum erosion-resistant stopper rod is used, electromagnetic stirring is adopted in a fan-shaped section, the pulling speed is set to be 0.60-1.25 m / min, and the floating time of inclusions in molten steel is guaranteed; the process can effectively reduce the inclusions of the steel plate produced by the continuous casting billet and improve the purity of the molten steel.

The invention discloses a test device and a test method for testing the erosive wear performance of a cement-based material, and relates to the technical field of cement-based material erosive tests. The testing device for testing the erosive wear performance of the cement-based material is characterized by comprising a scouring box, a test block fixer is arranged in the middle of the inner cavity, and a water outlet is formed in the bottom of the other end of the inner cavity; an angle positioner matched with the test block fixer is arranged on the inner side wall of the washing box; the water storage barrel is arranged below the water outlet; a first liquid pump is arranged in the water storage barrel; the device further comprises a multi-medium conveying pipe. And the other end of the multi-medium conveying pipe is communicated with the first liquid pump. According to the invention, complex environments such as water flow and particle impact can be effectively simulated, and a technical support is provided for a scouring test of a tested sample. The angle and the scouring speed of the tested sample piece can be changed according to the requirements of conditions, and the multi-condition testing requirements are met.