1057 results about "Beaker" patented technology

The invention belongs to the technical field of friction catalysis, and particularly relates to application of an aluminum oxide substrate in friction catalytic degradation of high-concentration organic dye wastewater, an aluminum oxide ceramic chip is used as a substrate, titanium dioxide nano powder is used as a catalyst, and the aluminum oxide ceramic chip is fixed at the bottom of a flat-bottom glass beaker; the method comprises the following steps: adding organic dye wastewater, a magnetic turntable and titanium dioxide nano powder into a flat-bottomed glass beaker, then putting the flat-bottomed glass beaker in a dark environment at room temperature, stirring and reacting on a magnetic stirrer for 90-150 minutes, and after the reaction is completed, completely degrading organic dye in the wastewater. According to the method, the aluminum oxide ceramic chip is added into a system for performing friction catalytic degradation on the organic dye wastewater by using the titanium dioxide nano powder as the substrate, so that the degradation rate of the organic dye is greatly improved, the complete degradation time of the organic dye is shortened, and a new thought is provided for performing friction catalytic degradation on the organic dye wastewater by using the titanium dioxide nano powder.

The invention relates to the technical field of optical elements, and discloses an optical film manufacturing device and method.The manufacturing device comprises a machine box, a material table is arranged in the machine box and used for containing a beaker containing a film coating solution, and a control box is further integrated on the machine box; the clamp is used for clamping a substrate to be coated; the linear telescopic electric cylinder is used for driving the clamp to move up and down; the swing frame is used for mounting the linear telescopic electric cylinder; the swinging driving mechanism is used for driving the swinging frame to perform pendulum swinging; a plurality of heating wires are arranged in the arc-shaped heating box; and the supporting frame is used for mounting the swinging driving mechanism. The manufacturing method adopts the manufacturing device to manufacture the optical film ear. The technical problems that in the prior art, in the multi-time multi-layer film coating process of an optical film manufacturing device, the film coating time is long, and the film coating uniformity is affected are solved, the film coating time is shortened in the optical film manufacturing process, drying and heating treatment can be rapidly conducted after the film is lifted, and the film coating uniformity is guaranteed.

The invention discloses a synthesis method and application of an iron-aluminum co-doped catalyst, and the synthesis method is characterized by comprising the following steps: S1, dissolving an aluminum metal salt and an iron metal salt in a beaker containing deionized water to obtain a solution A; s2, adding a phosphorus source into the solution A, and adjusting the pH to form a turbid liquid B; s3, biomass is added into the turbid liquid B to be stirred for 30 min, and a solution C is obtained; s4, adding a nitrogen source into the solution C, and drying the beaker in a water bath kettle; mixing the obtained dried product with an activating agent, and calcining under inert gas to obtain a catalyst crude product; and S5, grinding the catalyst crude product, washing with ethanol and deionized water, and carrying out vacuum drying to obtain the iron-aluminum co-doped catalyst. The preparation method is simple and low in equipment requirement. The invention discloses a novel nitrogen-doped carbon-coated zero-valent iron nanoparticle catalyst which can degrade pollutants by utilizing electron transfer of the pollutants and the catalyst under the condition of adding any oxidizing agent. Under the neutral room temperature condition, the catalyst has a very good removal effect on degradation of organic pollutants which are difficult to biodegrade, has very good stability, and is low in iron ion dissolution rate.

The invention discloses a full-automatic coagulation stirring experiment device, and relates to the technical field of coagulation stirring experiments, the full-automatic coagulation stirring experiment device comprises an experiment beaker main body, the experiment beaker main body is provided with a liquid inlet, an overflow port, a sampling port and a liquid outlet, a plurality of liquid inlets are internally provided with a plurality of output ends of a liquid inlet pipeline respectively, and a plurality of output ends of the liquid inlet pipeline are connected with the overflow port; a plurality of input ends of a sampling pipeline are respectively mounted in the plurality of sampling ports, an overflow mechanism is arranged in the overflow port, a plurality of input ends of a liquid discharging pipeline are respectively mounted in the plurality of liquid discharging ports, a feeding mechanism is arranged at the other end of the coagulant adding pipe, and a stirring mechanism is arranged at the upper end of the mounting bottom frame. By arranging the liquid inlet pipeline, the overflow mechanism, the feeding mechanism and the sampling mechanism, the automation degree is high, and key parameters such as the stirring speed, the stirring time and the dosage can be automatically controlled and accurately adjusted through an external control component.

A method for detecting circularity of silicon carbide micro powder relates to the technical field of silicon carbide detection, and comprises the following steps: S1, turning on a flowing particle imager, preheating and then carrying out background detection; s2, adding standard particles into the sample pool, and enabling the flowing particle imager to perform automatic focusing; s3, adding the prepared silicon carbide micro powder sample into a sample pool, and detecting by using a flowing particle imager; and S4, storing the detection result, checking the silicon carbide micro powder particle image, and recording the detection result. The preparation of the silicon carbide micro-powder sample comprises the following steps: S31, adding the dried silicon carbide sample into a dry and clean beaker; s32, sequentially adding an impregnating compound, a dispersing agent and deionized water into the beaker; s33, carrying out ultrasonic dispersion; and S34, taking out the uniformly mixed sample. The method can solve the technical problem of detection failure caused by easy agglomeration of the silicon carbide sample when the flowing particle imager is used for detecting the circularity of the silicon carbide micro powder.

The invention discloses a nitrogen-doped zinc ion battery manganese-based positive electrode material and a preparation method and application thereof, and the preparation method comprises the following steps: mixing a strong oxidant and a manganese salt, putting the mixture into a beaker, adding deionized water, and uniformly stirring to form a mixed solution; transferring the mixed solution into a high-pressure reaction kettle with a polytetrafluoroethylene lining, and heating the high-pressure reaction kettle in a drying oven; cooling, precipitating, filtering and washing for multiple times, and then putting into a drying oven for vacuum drying to obtain an original manganese-based positive electrode material; the preparation method comprises the following steps: respectively weighing an original manganese-based positive electrode material and hexamethylenetetramine, flatly laying the original manganese-based positive electrode material at the bottom of a lining of a reaction kettle, and putting the hexamethylenetetramine into a beaker; and putting the beaker into a reaction kettle, moving the beaker and the reaction kettle into a drying oven, and heating to obtain the surface nitrogen-doped manganese-based positive electrode material.

The device comprises a dispensing box, an emulsifying instrument and a beaker, a medicine powder blending assembly is arranged on one side of the dispensing box, an emulsifying assembly is arranged on the other side of the dispensing box, a clamping assembly is arranged in the dispensing box, and an opening is formed in the portion, between the emulsifying assembly and the medicine powder blending assembly, of the dispensing box so that the beaker can be conveniently taken and placed. The emulsifying component and the clamping component cannot move simultaneously, so that the beaker is prevented from being damaged by interference. According to the device, integrated configuration is achieved, so that manual weighing and repeated checking are not needed, batch configuration is achieved, the medicine powder proportioning is controlled through the medicine powder blending assembly, medicine powder mixing is controlled through the planetary gear assembly, knocking vibration is achieved through the vibration discharging assembly, falling of the medicine powder is guaranteed, and the medicine powder is prevented from adhering to a medicine plug; the emulsifying assembly is utilized to ensure that the emulsifying instrument is not started in the beaker moving process, mutual interference between the emulsifying instrument and the beaker and damage to the beaker are avoided, and the adjustable clamping assembly is adapted to beakers with different sizes.

The invention provides a preparation method of a MoTe2 single crystal. The preparation method comprises the following steps: A, weighing molybdenum powder, tellurium powder and cobalt powder according to a stoichiometric ratio; b, the powder weighed in the step A is poured into a glass beaker, convective mixing is achieved under the action of a stirrer, and the duration time is 20-30 minutes; c, pouring the powder ground in the step B into a crucible, and sealing; d, putting the crucible in the step C into a glass tube; e, covering the glass tube in the step D with a glass cap; f, vacuumizing the glass tube by using a vacuum pump set, then filling argon, repeating the gas washing process for three times, and then vacuumizing again; g, aligning the middle position of the glass cap, heating to melt the tube wall of the glass tube and the glass cap together, and completing vacuum sealing; and H, putting the glass tube in the step G into a box-type furnace, sintering, taking out, putting into a water bucket, and quenching to obtain a single crystal sample.

The invention discloses a preparation method of a reverse water gas shift catalyst and an application thereof, comprising the following steps: S1: weighing a metal oxide precursor, a molybdenum oxide precursor and citric acid respectively and dissolving them in a beaker to obtain a mixed solution A; S2. adjusting the pH value of the mixed solution A with an acidic solution; S3. heating and stirring the mixed solution A in a water bath until it is in a gel state and drying, and then calcining it in a muffle furnace to obtain a carrier material; S4-S6. preparing a reverse water gas shift catalyst; the catalyst of the invention loads copper on the carrier material by a co-precipitation method, and the carrier material is reported for the first time, and has the advantages of simple preparation steps, easy availability of raw materials, safe operation, etc. At the same time, the catalyst obtained by the invention has an excellent CO conversion rate and a CO selectivity close to 100%.

The invention discloses a pioglitazone hydrochloride sampling device and a use method thereof, and relates to the technical field of medicine sampling, the pioglitazone hydrochloride sampling device comprises a sampling mechanism and lifting fixing rods mounted around the bottom of the sampling mechanism, a fixing structure is arranged at the bottom of the sampling mechanism, beaker fixing seats are symmetrically mounted on one side of the top of the fixing structure, and the beaker fixing seats are symmetrically mounted on the bottom of the sampling mechanism. The sampling mechanism comprises a horizontal moving support, a horizontal moving motor is fixedly mounted on one side of the horizontal moving support, a horizontal threaded rod is fixedly connected to the output end of the horizontal moving motor, a horizontal threaded sleeve is in threaded connection to the outer side of the horizontal threaded rod, and an electric telescopic rod is fixedly mounted at the bottom of the horizontal threaded sleeve. The pioglitazone hydrochloride white crystal powder can be clamped through the sampling tube and the clamping hopper, and meanwhile, the pioglitazone hydrochloride and a corresponding reagent can be mixed to form a flowing sample, so that the pioglitazone hydrochloride can be conveniently detected.

The invention discloses a stirring and heating device and method for measuring hexavalent chromium in soil and sediment, the stirring and heating device comprises a stirring and heating cabin and a power cabin, a stirring and heating cabin cover is arranged above the stirring and heating cabin, a magnetic stirring device and a driving motor are arranged in the power cabin, and a beaker bracket and a heating pipe are arranged in the stirring and heating cabin; the heating pipe is located on the inner bottom face of the stirring and heating cabin, the beaker bracket is located above the heating pipe, stirring and heating cabin cover open holes and a stirring and heating cabin cover handle are arranged above the stirring and heating cabin cover, and the number and the position of the stirring and heating cabin cover open holes correspond to those of the beaker bracket. The lower end of the central rotating shaft is connected with an output shaft of the driving motor, the upper end of the central rotating shaft penetrates through the central position of the stirring and heating cabin cover, and an infrared temperature measuring device is arranged at the upper end of the central rotating shaft. The method can effectively improve the detection efficiency and precision of hexavalent chromium in soil and sediments.

The invention discloses a method for determining the content of trace holmium, thulium and tungsten in rare earth erbium and a compound thereof, which comprises the following steps: placing a rare earth erbium and compound sample thereof in a beaker, and performing a blank test along with a sample; adding nitric acid, heating at low temperature until the sample is completely dissolved, and cooling; transferring into a volumetric flask, adding a cesium internal standard solution, diluting with water, and uniformly mixing; the holmium, the thulium and the tungsten are measured by using an oxygen mode of an inductively coupled plasma tandem mass spectrometer, and the contents of the holmium, the thulium and the tungsten are calculated according to a working curve method. According to the method, the inductively coupled plasma tandem mass spectrometry technology is used, and mass spectrum interference of an erbium matrix on holmium, thulium and tungsten is effectively eliminated by selecting a proper reaction mode and optimizing the flow of reaction gas.

The invention relates to the field of hydrofluoric acid detection, and discloses a detection mechanism for hydrofluoric acid preparation, the detection mechanism comprises a fixed seat and a detector, the detector is mounted in the middle of the upper surface of the fixed seat, a storage structure is arranged at the rear edge of the upper surface of the fixed seat, and a measuring disc is arranged on the upper surface of the detector. A mounting plate is mounted at the position, in the middle of the lower portion of the measuring disc, of the upper portion of the detector, a hanging rod is connected to the front end of the upper portion of the mounting plate and bypasses the upper portion of the measuring disc, a rotating structure is arranged on the mounting plate, and the number of beakers is sequentially and rotationally transferred to the measuring disc from the arc-shaped frame to be detected; and the beaker loaded with hydrofluoric acid can be automatically driven to be transferred to the arc-shaped frame, so that the situation that detection personnel are accidentally injured is reduced, and the detection safety is improved.

The utility model discloses a water quality COD (Chemical Oxygen Demand) detection device, and relates to the technical field of CODMn detection, the water quality COD detection device comprises a base, a plurality of counter bores are formed in the base at intervals, and a beaker is placed in any counter bore; a plurality of groups of detection devices for detecting color change of liquid in the beaker are arranged on the base; a plurality of stirring mechanisms are further arranged at the bottom of the base; and the plurality of detection devices and the plurality of stirring mechanisms are in one-to-one correspondence with the plurality of counter bores. The detection device is mounted on the base, double detection means of a photoelectric receiver and a camera can be adopted in COD detection titration, and meanwhile, a monitoring function is achieved, so that the detection stability and repeatability are improved.

The application discloses a heating magnetic stirrer, a stirring driving device, a temperature measuring device and a temperature control device, wherein the stirring driving device is used for mixing the solution in a beaker and making the temperature distribution of the solution in the beaker more uniform; the temperature measuring device comprises a solution temperature measuring device and a heating table temperature measuring device; the solution temperature measuring device is used for measuring the solution temperature in the beaker and taking the solution temperature as a feedback amount of a main ring; the heating table temperature measuring device is used for measuring the temperature of the heating table and taking the temperature as a feedback amount of a secondary ring; and the temperature control device adopts a fuzzy-serial PID control mode and is used for precisely controlling the solution temperature in the beaker. The heating magnetic stirrer can realize high-precision control of the medium solution temperature, has a small overshoot amount and good stability, and is suitable for different medium solutions.

A heating assembly is arranged on the outer side of the bottom of an inner shell, an outer shell comprises an outer side shell forming a vacuum layer with the side wall of the inner shell, the outer shell further comprises an outer bottom shell, and the outer bottom shell, the outer side shell and the outer wall of the lower bottom of the inner shell form a containing cavity for containing the heating assembly. The outer shell comprises an outer side shell forming a vacuum layer with the side wall of the inner shell, the side edge heat preservation effect is good, the outer bottom shell, the outer side shell and the outer wall of the lower bottom of the inner shell form a containing cavity for containing a heating assembly, the whole body is independent, reliable and convenient to carry, can be matched with a power line or a power source to be carried, is lighter, and can be electrically connected when the power source is needed. And the inner shell and the outer shell are arranged, so that cleaning and disinfection are facilitated, the containing cavity for containing the heating assembly is formed, good heat preservation can be achieved, and the complete heating effect is achieved.

The application provides a funnel spout and beaker position detection method, system, terminal and medium, comprising: acquiring a video of experimental operation; extracting any image in the video and inputting the image into a ResNet18 model to obtain the position relationship of the funnel spout and the beaker on both sides; inputting the key frame of the video into a CRNN model to obtain the drop state of the funnel spout; and judging whether the funnel spout and the beaker are attached to the wall according to the position relationship of the funnel spout and the beaker on both sides and / or the drop state of the funnel spout. The application performs multi-directional detection and judgment, avoids misjudgment, greatly improves the test accuracy, and saves a large amount of manpower cost.

The invention belongs to the technical field of pharmaceutical preparations, and particularly relates to a beclomethasone propionate suspension for inhalation and a preparation method of the beclomethasone propionate suspension. The preparation method of the beclomethasone propionate suspension for inhalation mainly comprises the following steps: S1, preparing sterile beclomethasone propionate particles by using a supercritical fluid rapid expansion method, and collecting the sterile beclomethasone propionate particles into a sterile glass beaker; s2, adding sterile water in which a surfactant is dissolved, and dispersing by ultrasonic dispersion equipment; s3, preparing an auxiliary material solution of beclomethasone propionate, and filtering by using a sterile filter membrane; s4, mixing the solution in the step S2 and the solution in the step S3, and dispersing by using ultrasonic dispersion equipment; and step S5, filling and sealing into an ampoule bottle to prepare the beclomethasone propionate suspension for inhalation. The beclomethasone propionate suspension for inhalation is more uniform in particle size distribution and good in stability, the preparation process is carried out under relatively mild conditions, and the technological operation is simple and convenient.

A full-automatic bottle washing machine comprises a vacant beaker support, a cleaning position beaker support, a blow-drying position beaker support, a drying position beaker support, a carrying supporting plate mechanism, a water spray nozzle, an air spray nozzle, an electric heating fan, a beaker outer wall cleaning and drying device and a cleaning water tank, and the vacant beaker support, the cleaning position beaker support and the blow-drying position beaker support are arranged in the cleaning water tank. A moving supporting plate of the moving supporting plate mechanism is provided with three clamping grooves used for supporting and clamping cleaning bottles and capable of moving up and down, left and right and front and back, a water spraying nozzle is arranged in a cleaning position beaker support, an air spraying nozzle is arranged in a blow-drying position beaker support, and an electric heating fan is arranged at the bottom of a drying position beaker support. And the beaker outer wall cleaning and drying device is arranged above the cleaning position beaker bracket and the blow-drying position beaker bracket and can move up and down. According to the utility model, full-automatic cleaning and drying of the inner and outer walls of the conical beaker and the stirrer are realized, the cleaning is very clean, a lot of time is saved for chemical titration work, and the labor intensity and personnel allocation are reduced.

The invention discloses a method for determining the content of chloride ions in coal gas, and relates to the technical field of determination of chloride ions in coal gas. The method for measuring the content of the chloride ions in the coal gas comprises the following steps: S1, a sampling link, S2, an analysis stage and S3, a calculation process, in the sampling link S1, two absorption bottles filled with ultrapure water and an empty absorption bottle are sequentially connected in series at a coal gas sampling opening, the absorption bottle is connected with a high-position gas diffusion pipe by virtue of a wet-type gas flow meter, and then gas is introduced at the flow speed of 0.5 L / min; s2, an analysis stage: pouring the absorption liquid in the two absorption bottles into a beaker, heating to boil, maintaining for 30 seconds, and then cooling to normal temperature for later use; the content X1 of chloride ions in the absorption liquid is calculated, and the formula is X1 = (V1-V0) * C * 0.03545 / V * 10 {6} * 35.5. According to the method, accurate sampling is conducted, an absorption bottle is connected in series, the flow speed is controlled, high-purity ultrapure water is matched, the chloride ion absorption efficiency and accuracy are greatly improved, and a foundation is built for follow-up accurate measurement.

The invention relates to a method for calculating, regulating and controlling the chlorine addition amount of a waterworks, and belongs to the technical field of water treatment. Firstly, a mathematical model of chlorine demand under different water quality parameters is established according to regression analysis of mass data obtained by a beaker experiment; fitting a residual chlorine attenuation curve; calculating the hydraulic retention time of the water body in the clean water tank and the hydraulic retention time T required by the raw water after chlorination to the outlet of the water plant; calculating the residual chlorine consumption of the raw water in the hydraulic retention time T by using the obtained residual chlorine attenuation curve; calculating the chlorine demand according to a mathematical model of the chlorine demand obtained according to the current water quality index; the chlorination amount is calculated through a chlorination amount calculation formula; and the residual chlorine in factory water is detected in real time, early warning is carried out in time when abnormity occurs, and the chlorine adding amount is adjusted in real time. The chlorine adding amount can be accurately calculated, meanwhile, the chlorine adding amount can be adjusted in real time according to the water quality change, the hydraulic retention time of the clean water tank and the residual chlorine content condition, the operation cost can be reduced, and the energy-saving and environment-friendly effects are achieved.

The utility model relates to the technical field of fine aggregate methylene blue testing, and discloses automatic liquid adding fine aggregate methylene blue testing equipment which comprises a base, a stirrer is arranged in the middle of the upper surface of the base, and a beaker is arranged on the upper surface of the base and located below the stirrer. A dropwise adding module, a control module and a contamination test module are arranged on the upper surface of the base and located on the two sides of the stirrer respectively. According to the utility model, the beaker, the stirrer, the dropwise adding module, the control module and the contamination test module are arranged, a methylene blue solution is added into the beaker through the dropwise adding module, then the methylene blue solution is stirred through the stirrer, and the contamination test module is used for automatically carrying out a contamination test. The test equipment can automatically dropwise add a methylene blue solution (5ml and 2ml solutions can be accurately added and can be automatically switched), and can automatically judge whether an image has color halo after methylene blue test and take the next step of measures, so that collection, processing and judgment of contamination test results are automatically completed.

The utility model discloses a constant temperature device for food inspection and detection, which belongs to the technical field of food inspection and detection and comprises a water bath kettle, a top cover is mounted at the top of the water bath kettle, a water adding hole is formed in the middle of the top cover, four placing holes are uniformly formed in the top cover, and limiting components are correspondingly arranged below the placing holes. By arranging the limiting assembly, a worker places a beaker containing a sample in the fixing frame and adds quantitative distilled water into the water bath kettle, at the moment, the floating plate moves upwards along the fixing frame under the buoyancy of water, the sliding base is driven to move along the base through the connecting rod and the connecting base in the moving process, and the opposite face of the base is of an inclined structure; the two sliding seats can be gathered towards the middle part of the placing hole until the two sliding seats are in contact with the outer side of the beaker to clamp the beaker, so that the stability of the beaker in a constant-temperature heating process can be ensured, a food detection sample is prevented from shaking, and the accuracy of a detection result is ensured.

The invention relates to the technical field of digestion, in particular to a pretreatment method for digesting a glass substrate. The pretreatment method comprises the following four key steps: firstly, crushing and grinding a glass substrate sample into powder so as to increase the contact area and accelerate the subsequent reaction speed; next, adding a mixture of ammonium bifluoride and ammonium fluoride and the powder sample into a polytetrafluoroethylene beaker, adding a small amount of water for wetting, and then adding concentrated hydrochloric acid and concentrated nitric acid to effectively promote the dissolution of the sample; then, the beaker is placed on a heating plate to be heated and digested, and after it is confirmed that the sample is completely digested by monitoring the state of the solution, the sample is cooled to the room temperature. And finally, transferring the digestion solution to a volumetric flask, rinsing the original beaker for multiple times with pure water, and diluting to a constant volume. According to the method, the digestion time is remarkably shortened, the background interference is reduced, the detection precision is improved, and the method is particularly suitable for the requirements of high-end analysis equipment such as AAS and ICP.

The utility model relates to the technical field of chemical equipment, in particular to a sampling device for liquid detection and analysis of a tank truck, which comprises a beaker and an extraction mechanism arranged on the beaker, the beaker comprises a beaker body, a discharge pipe arranged at the lower end of the beaker body and integrated with the beaker body, and a discharge valve arranged on a pipe section of the discharge pipe; the extraction mechanism comprises a fixing assembly arranged on the upper middle portion in the cup body, an electric telescopic rod arranged on the fixing assembly, a power supply assembly arranged on the electric telescopic rod and grips arranged on the two sides of the power supply assembly. The device has the characteristic of ensuring the sampling uniformity when the liquid of the tank car is sampled; and when the sample flows into the sampling bottle, the scattering of the sample is effectively prevented.

The utility model relates to a quantitative analysis device for asphalt mixture interface adhesion performance based on three-dimensional scanning, and belongs to the technical field of building material detection. The garbage can comprises a cylindrical can body with a cover, wherein the side surface part of the can body is hollowed; a cross-shaped guide rail is arranged on the inner surface of an upper cover of the cylindrical can body with the cover, the straight-barrel-type electric telescopic rod is connected with a sliding block of the cross-shaped guide rail, and a hook is arranged at the bottom of the straight-barrel-type electric telescopic rod. A semi-ring-shaped guide rail is arranged on the inner wall of the cylindrical can body with the cover, the U-shaped clamp is connected with a sliding block of the semi-ring-shaped guide rail through a transverse connecting rod, and the non-contact three-dimensional laser scanner is clamped in the U-shaped clamp. The bottom of the cylindrical barrel body with the cover is provided with two constant-temperature electric heating furnaces which are distributed at an interval, and the two constant-temperature electric heating furnaces are respectively provided with a beaker. The asphalt-aggregate adhesion performance evaluation test device can simplify the steps of the asphalt-aggregate adhesion performance evaluation test, improves the defects in the original test evaluation method, and can better adapt to the engineering characteristic evaluation of the asphalt in the construction site environment.

The invention discloses a micro-arc oxidation coating for an artificial hip joint Ti6Al4V alloy and a preparation method of the micro-arc oxidation coating. The preparation method comprises the following steps that S1, pretreatment is conducted; s2, preparing a micro-arc oxidation electrolyte; s3, preparing a micro-arc oxidation coating; s4, cleaning and drying treatment; a preparation method of the electrolyte comprises the steps that 6 g of sodium metaaluminate solid powder, 4 g of potassium hydroxide solid powder, 2 g of sodium hexametaphosphate solid powder, 4 g of sodium silicate solid powder and 4 g of yttrium oxide nanoparticles are sequentially weighed and added into a beaker, then 980 mL of ultrapure water at the temperature of 60 DEG C is added into the beaker, and stirring is conducted for 2 min while the temperature is kept; the yttrium oxide particles are approximately spherical or ellipsoidal, the particle size range is 20-50 nm, and the purity is 99.99%. The yttrium oxide nanoparticles are introduced into the electrolyte, the micro-arc oxidation coating containing the yttrium oxide is prepared on the surface of the Ti6Al4V alloy, and compared with a traditional micro-arc oxidation coating, the surface porosity of the micro-arc oxidation coating containing the yttrium oxide is remarkably reduced, and the compactness is remarkably improved.

The utility model discloses a false tooth model curing device, which comprises a fixed box, a support rotating structure and an irradiation structure, the support rotating structure is arranged on the fixed box, the irradiation structure is arranged on the fixed box, the support rotating structure comprises a fixed seat, a motor, a rotating seat, a bottom curing lamp, a glass plate, a glass cup and a false tooth clamping seat, the fixing base is fixedly arranged in the fixing box, the motor is fixedly arranged on the fixing base, the rotating base is arranged on the motor in a driving mode, and the bottom curing lamp is arranged in the rotating base. The utility model belongs to the technical field of false tooth equipment, particularly relates to a false tooth model curing device, and effectively solves the problems that a beaker in the false tooth model curing device is placed on a fixing frame and cannot rotate, a curing lamp is relatively fixed, and the surface of a false tooth is not uniformly illuminated, so that the curing is not uniform.

The invention provides a test method of a fine copper wire sample for a glow discharge mass spectrometer. The test method comprises the following steps: a sample preparation stage: preparing the fine copper wire sample through a preparation device of the fine copper wire sample for the glow discharge mass spectrometer. In the sample cleaning stage, the prepared Flat-shaped wire winding copper sample and the prepared Pin-shaped wire twisting copper sample are firstly placed in a polytetrafluoroethylene beaker of special copper, 10% dilute nitric acid is added for ultrasonic cleaning or heated to 150 DEG C for cleaning; cleaning the pickled sample with ultrapure water for 5 times, and performing ultrasonic treatment with ultrapure water for 5 minutes; and finally, carrying out ultrasonic treatment for 5 minutes by using absolute ethyl alcohol, taking out and blow-drying for later detection. A parameter optimization stage; and a sample testing stage. The method has the advantages that operation is easy, preparation efficiency is high, and contamination is not prone to occurring; the rotating speed and the up-and-down moving speed of the lifting table are adjusted, so that consistent sample gaps are ensured, stable test signals are ensured, the rolled wire samples with different diameters can be prepared according to requirements, and the practicability is high.

The invention provides a method for determining boron element in iron ore, which comprises the following steps: weighing 0.2 g of sample, uniformly mixing with a flux, heating to red at 700-800 DEG C, cooling, adding sodium peroxide for secondary melting, dissolving in water, and transferring to a beaker; adding ethanol to boil, fixing the volume to 500mL, filtering and taking 100mL, adjusting the pH value, adding hydrogen peroxide to slightly boil, cooling, adding barium carbonate to boil, diluting and filtering, and taking 25mL for color development determination. According to the method, sodium carbonate and / or potassium carbonate and sodium peroxide are adopted to form a composite flux, an iron ore sample is completely decomposed through secondary melting and step-by-step dissolution, and the sample decomposition efficiency is improved; the method is stable in recovery rate, is superior to a conventional method in precision, can accurately measure the boron content in the iron ore, meets the technical requirements on boron element detection in the fields of ferrous metallurgy, geological exploration and the like, provides an efficient and reliable detection means for boron content analysis, and ensures the accuracy and reproducibility of a detection result.