67 results about "Surface tension" patented technology

A boron-containing polyethylene glycol fatty acid ester surfactant belongs to the field of organic chemistry and functional materials. The boron-containing polyethylene glycol fatty acid ester surfactant is prepared as follows: polyethylene glycol (PEG), boric acid and fatty acid are used as raw materials, first esterification reaction of the PEG and the boric acid is performed, then esterification reaction of the PEG and the fatty acid is performed to obtain boron-containing poly ethylene glycol fatty acid ester; by changing the species of fatty acids and catalysts and molecular weight of the PEG, the esterification rate can be enhanced, the boron-containing poly ethylene glycol fatty acid ester product can be used as a surfactant, and the boron-containing poly ethylene glycol fatty acid ester can reduce water surface tension and has good emulsifying properties.

The utility model relates to a cooking device. The cooking equipment comprises an inner container and a humidifying assembly. The inner container is provided with a cooking cavity; the humidifying assembly comprises an atomizing nozzle, the atomizing nozzle is connected to the inner container, and the atomizing nozzle is arranged towards the interior of the cooking cavity and sprays water mist. According to the cooking equipment provided in the scheme, the atomizing nozzle connected to the inner container is arranged, the water mist is sprayed towards the interior of the cooking cavity through the atomizing nozzle, and the characteristic that the water mist can become water vapor more quickly compared with water flow is utilized, so that a better humidifying and baking effect is achieved; the characteristic that water mist is composed of fine liquid drops and has a large surface area is utilized, the characteristics that the water mist flows at a high speed and is large in surface tension and not prone to adhesion are combined, the water mist is rapidly evaporated into water vapor, the concentration of mineral substances in the water is reduced, the mineral substances dissolved in the water are prevented from being deposited and crystallized on the surface of the inner container, and the service life of the inner container is prolonged. Therefore, the problem that scale is easy to form during humidifying and baking is prevented.

The invention discloses a tight sandstone reservoir water-containing gas well water block removing agent and a preparation method and application, belongs to the technical field of gas reservoir development, and is characterized in that the water block removing agent comprises the following components in parts by weight: 20-35 parts of an ampholytic surfactant, 0.3-0.5 part of a fluorocarbon surfactant, 5-10 parts of a wetting agent, 5-10 parts of a solvent and 30-45 parts of water. The prepared water block removing agent is easy to biodegrade and low in surface tension and interfacial tension, the wettability of a rock core can be gradually changed from hydrophilic to hydrophobic, the rock wettability is effectively changed, the interfacial tension between fluid and reservoir rock is reduced, the permeability of the rock core is improved, and then the single-well recovery efficiency of a tight sandstone gas reservoir water-containing gas well is improved.

The present application relates to heat exchange medium energy-saving additive technical field, specifically for a kind of energy-saving additive for heat exchange system and its preparation method and application, the energy-saving additive includes following weight parts component: main surfactant: 2-20 parts;Scale inhibitor: 0-30 parts;Coupling agent: 0-30 parts;Regulator: 0-30 parts;Surface tension control agent: 0-20 parts;Auxiliary surfactant: 0-10 parts;Dispersing agent: 20-30 parts;Defoaming agent: 0-10 parts.By the scientific compounding and synergistic effect of main surfactant and other surface active components, the surface tension of water-based heat exchange medium can be significantly reduced to a very low level of 27.68mN / m.Greatly improve the wettability and spreadability of medium in the inner wall of heat exchanger, so that it can quickly cover the heat exchange surface to form a uniform thin liquid film, effectively eliminate or thin the liquid film thermal resistance that hinders heat transfer.

The invention relates to a heavy hammer for hydrographic survey, and belongs to the technical field of hydrographic survey instruments. The design of the heavy hammer is based on taking a volume V, a material density rho and a shape parameter as core decision variables and taking a minimum mass m as a target function; the optimal mathematical model meets the requirements of a water surface tension change threshold value delta T1 caused by buoyancy, a water bottom tension change threshold value delta T2 caused by water bottom support, a terminal sinking speed threshold value vmin, the maximum mass gamma < = 0.5 kg and the maximum boundary dimension constraint. The heavy hammer is spherical, drop-shaped or torpedo-shaped, specific volume, density and mass parameters are obtained through optimization calculation, and high-tension detection sensitivity and rapid sinking efficiency are achieved while portability is ensured. Preferably, the heavy hammer is of a separable assembly type structure, and a containing cavity and a counterweight metal block are arranged in the heavy hammer so as to adjust the density and the mass. According to the system, the problem of contradiction between performance indexes in heavy hammer design is solved, and the comprehensive measurement performance is remarkably improved.

The invention discloses a distribution box with moisture-proof and dehumidification functions and a use method thereof, and relates to the technical field of distribution boxes, the distribution box comprises a box body, box doors are hinged to the two sides of the front surface of the box body respectively, a dustproof net is arranged to intercept dust, and the dust is prevented from entering the box body to be attached to the surface of an electrical component body to affect heat dissipation; by arranging the waterproof breathable film, water particles are very fine in a water vapor state and can smoothly permeate to the other side of a capillary tube according to a capillary motion principle, so that a vapor permeation phenomenon occurs, after water vapor is condensed into water drops, the particles become large, and water molecules cannot be smoothly separated from the water drops and permeate to the other side due to the action of surface tension of the water drops; therefore, water permeation is prevented, and the waterproof function is achieved.

The application discloses a kind of wet and hot marine environment under power transmission equipment surface condensation amount calculation method and device, it is related to power transmission equipment humidity management technical field, wherein method includes: obtaining the temperature and relative humidity parameters of the environment where target power transmission equipment is located, into salt moisture dissociation corrected condensation generation condition criterion, whether to meet condensation generation condition is judged, not meet then terminate calculation, meet then enter subsequent process;Based on salt moisture dissociation effect, through the surface tension of salt solution and equivalent curvature radius double correction, construct condensation amount calculation equation, enter environmental parameter and obtain the condensation amount of moisture dissociation correction after solution;Combining the salt density deposition amount and contact angle change caused by wet and hot marine environment dry-wet alternation, based on the salt space redistribution characteristics complete salt density dynamic correction, into parameter calculation dry-wet cycle condensation amount, realize the quantification of equipment surface condensation amount.The application realizes the accurate calculation of condensation amount, while guaranteeing long-term service of marine power transmission equipment.

The invention relates to the technical field of water quality detection, and discloses a water quality detection sampler for a sewage treatment plant and a sampling method. Comprising an overall external mechanism, an overall top plate is fixedly connected to the outer wall of the top of the overall external mechanism, purified water and a polluted water source are different in surface tension, the height of an internal detection water source is controlled, and when the water source is detected, if the height difference value between an external detection plate and an internal detection plate exceeds a normal value, the water source is listed as the polluted water source; when internal water flow scours, internal air is extruded by the water flow to diffuse outwards, an air pressure cooling mechanism is arranged at the top, when the air is extruded by force and passes through an air collection pipeline, the air passes through small holes from large holes, the air pressure intensity and density are increased, the air speed is increased, and the slow cooling effect is achieved; the water drop condensation plate is installed outside the device, the water drops are effectively collected and discharged, and the problems of moss growth, corrosion, rusting and the like are avoided.

The invention relates to the field of microsphere preparation, in particular to a method and device for preparing monodisperse microspheres with high yield, and the method comprises the following steps: spraying a liquid material in a hot melting state into water or incompatible liquid with a considerable specific gravity through a spraying valve micro-channel at the frequency of 500-1500 times per second by adopting a hot melt glue spraying valve; in the spraying process, the hot melt material moves in the spraying valve along a preset track path, each drop of liquid particles suspend in water with the same specific gravity or liquid incompatible with the material and is independent of one another, the liquid particles are not mutually adhered, and in the water with the same specific gravity or the liquid incompatible with the material, the material liquid drops are solidified under proper conditions, so that the liquid particles are not adhered to one another. Due to the fact that the volume of the material liquid ejected by the ejection valve is basically consistent, in the suspension liquid, the surface tension of material molecules enables the material to be solidified to form a true spherical shape, and the volume and mass errors of each spherical material are very small, so that the particle size distribution of the formed microspheres presents monodispersity.

The invention belongs to the technical field of grouting simulation, and particularly discloses a deformation porous medium splitting grouting simulation method and system.The method comprises the steps that a three-dimensional geometric model of a porous medium in an area to be simulated is built, a computational domain is determined, and the computational domain is divided into a plurality of non-overlapped unit grids; establishing a multiphase system control equation, and carrying out numerical updating on relative permeability, density, viscosity and surface tension; on the basis of the updated parameters, fluid velocity field calculation is conducted through a fluid control equation of the pure fluid area; calculating transmission time based on the obtained fluid velocity, and updating a slurry viscosity field through a slurry viscosity space-time tracking model; and the solid speed and mass are updated based on the solid mass and momentum conservation equation, and the grouting simulation process is completed. According to the method, the permeability change of the porous medium and the dynamic coupling effect of the stress state are comprehensively considered, and a scientific basis is provided for grouting design and optimization under complex working conditions in engineering.

This invention relates to an optimization method for an organic, environmentally friendly water-based fire extinguishing agent, belonging to the field of intelligent optimization technology for fire extinguishing agent formulations. The method parametrically models the fire extinguishing agent formulation and preparation process to construct a joint feasible domain; it establishes a comprehensive performance function including extinguishing time, cooling capacity, smoke suppression index, and reignition probability, and simultaneously constructs a function including TOC, COD, and EC. 50 An environmental risk function is derived based on VOC, organic fluorine content, and bio-based proportion, with environmental thresholds as constraints. Mechanism consistency constraints such as surface tension, viscosity window, and lower bound of cooling capacity are introduced. Through worst-case robust optimization and an active sampling closed-loop update mechanism, stable performance optimization under low-temperature and brine environments is achieved. This method can obtain optimal fire extinguishing agent formulations and process parameters that combine environmental compliance, smoke suppression and reignition resistance, and multi-condition adaptability, while meeting the requirements of fluorine-free and high bio-based proportions.

1. Name of the product in this design: Critical Point Dryer (Vertical). 2. Purpose of this design: To eliminate liquid surface tension and prevent samples from collapsing, deforming, shrinking, or structurally damaged during drying. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model provides a sidewalk interlocking block which comprises a body, and a plurality of supporting structures abut against the edge of the side surface of the body. A plurality of drainage pipelines are arranged in the body; the supporting structure comprises a partition plate, and the partition plate abuts against the side surface of the body. The partition plate and the body are provided with a water retaining structure which is communicated with the bottom of the body and the surface of the body; the water retaining structure comprises a plurality of concave surfaces and convex surfaces which are communicated with one another; a plurality of positioning cones are arranged at the bottom of the body, and each drainage pipeline penetrates through the body and the positioning cones. The side edge of the interlocking block is designed into a concave surface and convex surface structure, so that accumulated water flows along the contacted surface structure due to the surface tension effect of liquid when being ejected from bottom to top, and certain kinetic energy is consumed by the accumulated water before the accumulated water is ejected out due to the effect of the concave surface and the convex surface; and accumulated water on the surface of the interlocking block can be quickly emptied through a one-way drainage pipeline.

The invention relates to a concentration determination method and a concentration determination device, which are suitable for various different shapes of liquid to be detected and can accurately determine the concentration of a component to be detected. The concentration determination method is used for determining the concentration of a to-be-detected component in a to-be-detected liquid, and comprises the following steps: an excitation step: irradiating exciting light towards the to-be-detected liquid, keeping the to-be-detected liquid in a keeping unit through surface tension, enabling the exciting light to pass through a part of the to-be-detected liquid and then reach a light collection area of a to-be-detected area, after leaving the light collection area, the liquid passes through the other part of the liquid to be detected and leaves the liquid to be detected, and the light collection area is an area for collecting elastic scattered light and inelastic scattered light generated by irradiation in the liquid to be detected; a collection and detection step of collecting and detecting elastic scattered light and inelastic scattered light generated by irradiation of the light collection region; and a concentration determination step: determining the concentration of the component to be detected according to the collected elastic scattered light and inelastic scattered light.

The invention discloses a preparation method of an intelligent liquid two-way transportation surface based on cooperation of an Aucaria cunninghamii structure and pH response. The method comprises the following steps: step 1, designing, optimizing and semi-curing printing of an Aucaria cunninghamii structure imitating model; step 2, preparing a pH response particle modification solution; step 3, swelling modification and post-curing of the semi-cured model; and step 4, drying and post-processing. According to the method, pH response particles are introduced into an Aucaria cunnata bionic structure, the surface can intelligently switch the transportation direction of high-surface tension liquid according to the pH value of the liquid, reversible switching of the transportation direction is achieved, and the limitation of unidirectional and irreversible transportation of a traditional surface is broken through; the pH response particles are firmly anchored on the surfaces of the three-dimensional double-curvature ratchets through a semi-curing-swelling-post-curing process, and the dynamic response capability to the chemical environment is given to the three-dimensional double-curvature ratchets while the inherent capillary driving characteristic of the structure is reserved.

The invention discloses an interface wetting regulator for tight gas reservoir water control fracturing and a preparation method of the interface wetting regulator. The preparation method comprises the following steps: S100, carrying out acidolysis on cellulose; s200, carrying out a hydrothermal reaction on the cellulose acidolysis product and a Gemini surfactant; and S300, compounding a quaternary ammonium salt cationic surfactant with a product obtained in the step S200 to obtain the interface wetting regulator for water control fracturing of the high-temperature and high-salt tight gas reservoir. The interface wetting regulator for water control fracturing of the high-temperature and high-salt tight gas reservoir, prepared by the preparation method provided by the invention, has multiple adsorption sites and high surface performance, is stronger in adsorption on the rock surface, has good wetting performance, and can convert a hydrophilic surface into a neutral wetting state and reduce the water phase permeability. Meanwhile, the surface tension is low, the flowback rate of fracturing fluid can be increased, and water control fracturing yield increase of tight gas reservoirs is achieved.

The application discloses a water environment ecological restoration equipment, two submersible aeration pumps draw water from a distance and inhale air, magnetic water and ionic gas, the water outlet of which is respectively transported into a filler tank, a filler box and a protein separator, the protein separator separates the tiny air bubbles with organic matter from water by the surface tension and electrostatic action of the tiny air bubbles. The large water volume makes the whole water body circulate, which not only makes the water body level replacement sufficient, but also makes the temperature of the upper and lower layers of the water body consistent, which is beneficial to inhibit the reproduction of blue-green algae. The magnetic water has oxygen aggregation and strong penetration, which is beneficial to oxygenation and makes fish and shrimp increase production and income. The ionic gas brought into the water environment has electric charge and polarity, which promotes the precipitation of pollutants and activates microorganisms, so that a good phosphorus removal effect is achieved. In the filler tank and the suspended filler box, the growth environment of microorganisms is gas, liquid and solid three phases, so that nitrification and denitrification reactions can exist at the same time, thereby improving the removal effect of organic pollutants and ammonia nitrogen.

The application discloses a kind of closed-loop ecological marine system based on multi-species coupling and surface layer circulation, belong to closed-loop ecological marine technical field, it includes: biological coupling processing area, hydrodynamic circulation system;Biological coupling processing area.In the application, through the synergy of multi-nutrient level biological coupling and closed-loop hydrodynamic circulation, efficient self-cleaning and ecological stability to the breeding or simulated seawater body are realized, the flow generator near the water surface can accurately promote the breaking of water surface tension, increase the dissolved oxygen content and the overall ecological biochemical reaction speed and dissolved organic matter, then inorganic nitrogen and phosphorus are rapidly absorbed by feather algae, grape algae and the like, the salt plant root system provides a microbial degradation platform, the salt plant adjusts salinity and absorbs excess nutrients, coral and symbiotic algae form a stable microecological structure, the entire processing chain does not need any chemical agent addition, and the ammonia nitrogen, nitrate and phosphate concentration can be significantly reduced, and dissolved organic carbon is continuously and efficiently removed, which fundamentally avoids the high energy consumption and chemical secondary pollution problems of traditional mechanical filtration.

The invention discloses an environment-friendly ozone water treatment system and process, and relates to the technical field of ozone water processing, the environment-friendly ozone water treatment system comprises a storage tank and a sealing ring, the sealing ring is fixedly mounted on the surface of the top end of the storage tank, a sealing block is movably mounted on the inner wall of the sealing ring, and an ultrasonic vibration rod is fixedly mounted on the inner wall of the sealing block; a recovery pipe is fixedly mounted on the outer side surface of the sealing ring; through cooperative work of the storage tank, the ultrasonic vibration rod in the sealing ring, the ozone recovery tank and the ozone generation tank, the problems of low ozone utilization rate and unstable bubbles are solved. Wherein the ultrasonic vibration rod switches high and low frequency modes through the controller: the surface tension of bubbles is destroyed at low frequency (28 kHz), and ozone gas is recovered to the recovery tank; and the cavitation effect is triggered to generate stable bubbles of 50-200 microns at high frequency (40 kHz), so that the defect that the ozone dissipation rate of the ozone water is relatively high due to the fact that the mixed ozone water cannot be treated by equipment in the prior art according to the use environment and the transportation environment is overcome.

The invention relates to the technical field of environment-friendly materials, in particular to a composite environment-friendly dust suppressant for an industrial solid waste landfill and a preparation method of the composite environment-friendly dust suppressant. According to the technical scheme, the composite type environment-friendly dust suppressant for the industrial solid waste landfill is prepared from components in percentage by mass; according to the method, a multi-factor mathematical model is constructed by introducing a response surface method and orthogonal experimental design, accurate proportioning optimization of components such as a wetting agent, a water-retaining agent and a binder is realized, and better dust wetting efficiency is verified through surface tension and contact angle experiments; in the aspect of cohesiveness, durability and stability of a consolidation layer are realized through film-forming property and wind erosion resistance tests; in the aspect of water retention, the long-acting moisturizing capacity is ensured through water retention rate and freeze-thaw resistance experiments, the technical threshold of the dust suppressant is fundamentally improved, and reliable technical support is provided for the dust suppression requirement in a complex environment.

This invention discloses a method for preparing tin granules using a vacuum and cryogenic medium. The method involves sequentially melting, dripping, and cooling the granules in a vacuum environment of -90 kPa to -101 kPa to obtain a semi-finished product. This semi-finished product is then subjected to coarse sieving, drying, and fine sieving to obtain the finished tin granules. This invention utilizes a vacuum environment for granulation, effectively eliminating external interference from other gases. Under the synergistic effect of the vacuum degree, melting temperature, droplet length, droplet diameter, droplet height, and cooling water temperature specified in this invention, molten tin droplets can spontaneously and fully form a better spherical shape under the influence of surface tension. This spherical high-temperature droplet is rapidly dripped into low-temperature cooling water, quickly freezing its ideal spherical shape. No subsequent degreasing or cleaning processes are required to obtain tin granules with a smooth surface and good sphericity. Testing shows that the tin granule yield of this method is over 92%.

The application relates to the technical field of petroleum chemical industry, and discloses a fracturing cleanup aid and a preparation method thereof. The fracturing cleanup aid is obtained by reacting a di-glycidyl ether material, p-phenylenedi(1-piperazine) and an alkyl chloride. The cleanup aid has good surface activity, low surface tension of a solution, is beneficial to reducing capillary resistance, reducing the pressure of residual liquid flowback after fracturing, and improving cleanup rate and cleanup performance. The cleanup aid contains hydroxyl groups and quaternary ammonium salt groups, can form interaction with silicate substances in rocks, enter rock pores, destroy the oil film on the surface of the rocks, improve the surface wetting performance of the rocks, and further improve the flowback performance. The cleanup aid has good high-temperature resistance and does not contain fluorine elements, and is green and environment-friendly.

Bottle closure (1) for beverage bottles with crown cap mouth, comprising a closure body with a side wall (2) which can be placed on the bottle neck and a lid surface (7) with a central drinking opening (3), characterized in that the drinking opening (3) is closed by an integrated fine mesh grid (4) which prevents the penetration of insects and reduces leakage when the bottle is tipped over due to surface tension.

The invention discloses a high-precision reconstruction method for a dynamic liquid level of a trace liquid. The method comprises the following steps: synchronously acquiring a binocular image sequence of the dynamic liquid level of the trace liquid to be measured; based on the binocular image sequence, obtaining an initial three-dimensional point cloud of the dynamic liquid level through stereoscopic vision three-dimensional reconstruction; constructing a fluid mechanics constraint model of the micro-liquid based on the action of surface tension and gravity; performing iterative optimization processing on the initial three-dimensional point cloud by taking a fluid mechanics constraint model as a constraint condition to obtain an optimized dynamic liquid level three-dimensional model; based on the optimized dynamic liquid level three-dimensional model, the liquid level height and the volume capacity of the micro liquid are calculated. According to the method, visual three-dimensional reconstruction and fluid mechanics constraints are fused, the liquid level form better conforms to the physical reality through iterative optimization, the measurement precision, response speed and anti-jamming capability of the micro-liquid in the dynamic process are remarkably improved, and the method is suitable for the precise metering requirements of the fields of biomedicine, chemical analysis and the like for micro-upgrading liquid.

The invention discloses an entropy optimization individual tree skeletonization method driven by a water drop model, and belongs to the technical field of forest three-dimensional reconstruction and laser point cloud processing. According to the method, single-tree point cloud is regarded as a water drop model with mass difference, contraction, merging and evaporation are carried out under the action of attractive force, repulsive force and equivalent surface tension, and a preliminary framework with local details reserved is generated; a skeleton entropy is defined based on water drop evolution geometric feature distribution, and entropy reduction optimization is utilized to enable a water drop model to converge from disorder to a low-entropy ordered skeleton. And iteratively minimizing the residual sum of squares of the point cloud and the skeleton edge, and reconstructing the topology, so that the skeleton point is more centered, and the topology is more reasonable. According to the method, skeleton points and topological edges can be output at the same time, and a reliable basis is provided for accurate individual tree modeling, biomass estimation and forestry application.

The invention provides an oil mist and oil smoke filter which comprises a vertical shell, an air inlet is formed in the bottom of the vertical shell, and an air outlet is formed in the top of the vertical shell; the primary filtering part is arranged in the shell; the secondary filtering part is arranged above the primary filtering part; the third-stage filtering part is arranged above the second-stage filtering part; the primary filtering part comprises an oil collecting tray; the deformable oil collecting structure is arranged above the oil collecting tray and comprises a supporting surface with a plurality of oil collecting holes and a plurality of oil collecting columns inserted into the oil collecting holes respectively; wherein the supporting surface is configured to be capable of deforming under the action of external force so as to change the shape and / or aperture of the oil collecting hole. By arranging the deformable oil collecting structure, the shape of the oil collecting hole can be actively changed, the gap between the oil collecting column and the oil collecting hole is extruded and opened, the surface tension of oil is broken, and condensation and dripping of the oil are accelerated.

The application discloses a 3D printing concrete design and preparation method for enhancing stirring efficiency, which comprises the following steps: according to material proportioning, cementing material, water reducing agent, water retention thickening agent, reinforcing fiber, water with a mass of W1 to be added for the first time, a surfactant and a solution formed by fully dissolving the surfactant are put into a stirring device; the surfactant solution is added into the stirring device, and primary stirring is carried out for t1; according to material proportioning, aggregate is put into the stirring device, water with a mass of W2 to be added for the second time is put into the device, and secondary stirring is carried out for t2; water with a mass of W3 to be added for the third time is put into the device, and tertiary stirring is carried out for t3. 2， By adjusting material proportioning at different temperatures and preparation methods for different stirring devices, the surface tension of water in the stirring process is reduced, the material stirring resistance can be effectively reduced, the material stirring efficiency is improved, and the stirring time is shortened.

The utility model discloses a drill bit soil throwing noise reduction device which is arranged below a drill bit and comprises a cleaning assembly and a fixing assembly, a cleaning end is formed at the top of the cleaning assembly, a connecting end is formed at the bottom of the cleaning assembly, and the cleaning end is arranged towards the drill bit. When the drill bit moves up and down, soil in the drill bit makes contact with the cleaning end to break the surface tension of the soil, and soil cleaning is achieved; the fixing assembly is arranged on the ground and fixedly connected with the connecting end so as to stabilize the cone. The device provided by the utility model can effectively solve the problem of noise generated when the drill is used for throwing soil by adopting the existing drill soil cleaning mode, and reduces the influence on surrounding residents.

The application provides a die machining device for a special-shaped flange and a machining method thereof, and belongs to the technical field of die machining. The die machining device for the special-shaped flange comprises a C-shaped frame, and further comprises: a die seat part, which is arranged on the C-shaped frame and is used for processing and forming the special-shaped flange; an auxiliary filling mechanism, which is arranged on the C-shaped frame and is used for driving the die seat part to displace along the length direction of the C-shaped frame; and a bubble eliminating mechanism, which is connected with the auxiliary filling mechanism and is used for eliminating bubbles in the molten metal in the die seat part. Through the reciprocating movement of the auxiliary filling mechanism, the molten metal is forced to diffuse in the pouring cavity, and local non-filling defects are avoided. The multi-point knocking design of the bubble eliminating mechanism generates vibration waves, destroys the surface tension of the bubbles, makes the bubbles float and break, significantly reduces the porosity, and thus guarantees the processing quality and processing efficiency of the special-shaped flange.

The application provides a shale organic matter wettability evaluation method and device, and the shale organic matter wettability evaluation method comprises the following steps: measuring the contact angle of at least three test media on the surface of a target shale; generating the surface free energy, surface tension and surface tension component of the target shale according to the contact angles of the at least three test media; measuring the mineral component content and organic matter content of the target shale; and evaluating the organic matter wettability of the target shale according to the surface free energy, surface tension, surface tension component, mineral component content and organic matter content. The application can accurately evaluate the wettability of shale organic matter, does not damage the pore structure of shale, the core can be used repeatedly, and has no requirement on the shape and size of shale, thereby providing a theoretical basis for analyzing the imbibition and flowback of fracturing fluid in shale.