68 results about "Liquid alloy" patented technology

The present application relates to a kind of for the determination method of liquid alloy density in electrostatic suspension state in space station, after obtaining the photo of liquid alloy in electrostatic suspension state in space station, first photo is converted into pixel matrix and carries out gray scale processing, then deduct photo background by matrix operation.Further, the best binary grayscale threshold of pixel matrix is calculated, and pixel matrix is carried out binary processing.Then all boundary coordinates in pixel matrix are obtained by matrix operation, and each connected boundary is distinguished.Excluding bright spot boundary, the boundary coordinates and center coordinates of liquid alloy are obtained.Then the boundary equation of liquid alloy is obtained by using multi-order Legendre equation fitting liquid alloy boundary coordinates.Finally, the volume of liquid alloy is obtained by rotating integral to the boundary equation of liquid alloy, and then the density value of liquid alloy is obtained.The density value of the present application can be obtained by processing liquid alloy photo, and can be used for the determination of containerless liquid alloy density in electrostatic suspension in space station.

The invention belongs to the field of oil and gas exploitation, geothermal exploitation and deep ground engineering, and discloses an oil and gas shaft crack plugging pressure repair material and method based on microwave heating bismuth-based alloy, the material comprises 74%-86% of bismuth-based alloy powder, 10%-15% of Fe3O4-SiO2 core-shell magnetic particles, 3%-8% of a microwave sensitizer and 1%-3% of a wetting agent. The repairing material is conveyed to the position, where shaft crack plugging repairing needs to be conducted, in the oil and gas shaft, then the repairing material is melted in a microwave heating mode, then the melted alloy is filled in shaft crack plugging, and then a rotating gradient magnetic field is used for repairing the oil and gas shaft crack. And the liquid alloy is driven to directionally migrate to a target crack area along the magnetic line, and after alloy liquid is cooled and solidified, pressure repairing of the oil and gas shaft crack plugging target position is achieved. Precise positioning, efficient filling, phase change control and complete recovery of the repairing material can be achieved in the extremely deep environment, and therefore the high-quality repairing requirement for oil and gas shaft crack plugging pressure repairing achieved through efficient liquefaction of plugging metal can be met.

The invention discloses a preparation method of a Sn-Bi-Ni-Cu quaternary liquid alloy methane cracking catalyst, production raw materials comprise composite melt metal and composite transition metal, and the mass ratio of the composite melt metal to the composite transition metal is 1: (0.3-1.2); the composite melt metal is composed of Sn and Bi according to the mass ratio of 1: (1.3-1.7); the composite transition metal is composed of Ni and Cu according to the mass ratio of 1: 0.15-1.2. The quaternary liquid alloy catalyst has the advantages that: 1) compared with the existing catalyst for hydrogen production by methane cracking, the quaternary liquid alloy catalyst provided by the invention can stably operate for more than 1000 hours in a range of normal pressure to 3MPa and air speed of 100-100mL. G <-1 >. H <-1 >, the active phase retention rate is more than 95%, and the quaternary liquid alloy catalyst is especially suitable for alkane pyrolysis hydrogen production, CO2 hydrogenation and easy carbon deposition reaction systems, and has a wide application prospect; a new material design thought and an engineering implementation scheme are provided for the field of liquid metal high-temperature catalysis; and 2) experiments show that the quaternary liquid alloy catalyst prepared by the method provided by the invention can significantly improve the carbon sequestration rate and the hydrogen yield.

The invention discloses a preparation method of Bi-In-Sn liquid metal dispersed particles, and belongs to the technical field of liquid metal, the method comprises the following steps: heating and melting bulk Bi-In-Sn alloy; adding a PVA (Polyvinyl Alcohol) solution which submerges the liquid alloy and carrying out secondary melting; stirring at a high speed until liquid particles are formed, and forming hydrogen bond auxiliary dispersion by PVA hydroxyl and a particle oxide layer; after the particles are solidified, washing with deionized water to remove PVA; and carrying out freeze drying or natural drying to obtain 40-500 [mu] m particles. According to the invention, only conventional heating and stirring equipment is needed, batch preparation can be realized within 10 minutes, the cost is low, the particle size of the particles is controllable, the particles are uniformly dispersed, and the large demand on low-temperature Bi-In-Sn particles in the fields of bone medicine and the like can be met.

The utility model relates to the technical field of lens manufacturing, in particular to a balsaming lens manufacturing gripping device which comprises an installation shell, an electric push rod is installed on the side of the installation shell, and a push block is arranged on the rear side of the inner wall of the installation shell. According to the utility model, the electric push rod pushes the push block back and forth and cooperates with the guide sliding block to guide and slide along the track of the guide groove, so that the two movable rods can be assisted to rotate by taking the connection position of the movable rods and the inner bottom wall of the mounting shell as a fixed point, and the two pieces of elastic silica gel can clamp lenses with different specifications; a controller connected with equipment can heat the internal Field alloy to be in a liquid state or a soft state, so that the elastic silica gel can deform to wrap the surface of the lens, the liquid alloy flows under pressure in the wrapping stage and adapts to the outline of a filling body, seamless clamping is achieved, then the alloy is cooled through a micro fan, heating of the alloy is stopped, and the alloy is rapidly solidified. A rigid structure is formed to cooperate with the concave-convex strips to lock the object.

A method for manufacturing a metal solid-to-metal solid bonded body, capable of improving a bond strength on a bonding face, and a composite member. A solid metal body containing a first component is brought into contact with a solid metal material composed of a compound, an alloy, or a non-equilibrium alloy, which contains both a second component and a third component having positive and negative heats of mixing respectively relative to the first component, and heated at a predetermined temperature for a predetermined time while applying a predetermined pressure to between the metal body and the metal material. Thereby, the first component and the third component are interdiffused with each other, and a liquid alloy containing the first component and the third component, which has been generated in a region where the first component and the third component have interdiffused with each other, is discharged.

The present application relates to the technical field of battery thermal management, in particular to a preparation method of a thermal activation battery with silicon-aluminum alloy high-temperature phase change material; in the preparation method, a certain amount of aluminum powder and silicon powder are selected as raw materials and mixed to obtain a liquid alloy by heating, the liquid alloy is defoamed and degranulated, and finally the bulk alloy is cooled to obtain a block alloy, the block alloy is sliced according to the size to obtain a sheet material, and the sheet material is assembled into the battery body in a layer insertion manner; the alloy phase change material prepared by the present scheme has high thermal conductivity, suitable phase change temperature and phase change enthalpy value, thereby having strong thermal management efficiency, being beneficial to regulating and controlling the surface temperature of the battery and prolonging the service life of the battery; in the present scheme, the alloy phase change material is cut and assembled into the thermal activation battery, and has the advantages of low cost, simple operation, good use effect and the like.

The application discloses a self-repairing flexible bionic composite material with high tear resistance and a preparation method thereof. The method is characterized in that a room-temperature self-repairing flexible polyurea elastomer SSPU is prepared by reacting THI, DBI and PDMS. The self-repairing flexible bionic composite material with high tear resistance is prepared by physically mixing the room-temperature self-repairing flexible polyurea elastomer SSPU and a gallium-indium-tin liquid alloy. The self-repairing flexible bionic composite material has the advantages of not affecting the flexibility of the material, greatly improving the tear resistance of the material, and having excellent photo-thermal response characteristics and fast photo-thermal repair capacity, and is suitable for preparing various stretchable and functional devices.

The invention discloses nano samarium oxide dispersion strengthened NiCoCrAlY alloy powder and a preparation method thereof, and relates to the technical field of alloy powder preparation. The method specifically comprises the following steps that a NiCoCrAlY alloy bar is smelted, then heat preservation is conducted, and a liquid alloy melt is obtained; the liquid alloy melt is subjected to high-pressure inert gas atomization powder preparation, nano samarium oxide flow perpendicular to the liquid flow direction of the alloy melt is synchronously introduced in the powder preparation process, high-temperature alloy liquid drops formed during atomization are impacted and wrapped, and target powder is obtained; performing hot isostatic pressing on the target powder to obtain a target alloy bar; a target alloy bar is repeatedly subjected to multiple smelting, high-pressure inert gas atomization powder manufacturing and hot isostatic pressing treatment, an alloy bar is obtained, then the alloy bar is subjected to high-pressure inert gas atomization powder manufacturing, and the nanometer samarium oxide dispersion strengthening type NiCoCrAlY alloy powder is obtained. By adopting the preparation method disclosed by the invention, the nano samarium oxide dispersion strengthened NiCoCrAlY alloy powder with excellent morphology, nano samarium oxide dispersity and purity can be obtained.

The invention relates to the technical field of heat dissipation materials, in particular to a Bi-In-Sn liquid metal phase change material for chip heat dissipation, a preparation method and a heat dissipation device, and is technically characterized in that the liquid metal phase change material is prepared from the following elements in percentage by mass: 42.0%-48.0% of Bi, 33.0%-40.0% of In and 12%-25% of Sn; the preparation method comprises the following steps: weighing Bi, In and Sn metal particles, and sequentially carrying out acid pickling, ultrasonic cleaning and drying treatment; under the high-purity argon protection environment, the pretreated metal particles are subjected to vacuum melting and stirring, and uniform liquid alloy is formed; and after the liquid alloy is cooled and formed, ultrasonic treatment is conducted, the Bi-In-Sn liquid metal phase change material is prepared, the advantage of low melting point is kept, meanwhile, unexpected improvement of latent heat performance is achieved, and the bottleneck problem of instantaneous thermal runaway of a chip in an extreme environment is effectively solved.

The invention discloses a preparation method of a high-temperature lead-bismuth liquid alloy valve, and belongs to the technical field of preparation of special valves, and the method comprises the following steps: firstly, constructing an accessory library equipped with real-time detection equipment, and meanwhile, establishing an initial three-dimensional accessory model database associated with detection data; according to valve process requirements, valve group data are called, assembly constraint verification is completed, and a three-dimensional target model and assembly process parameters are automatically generated; and finally, automatic assembly control logic is issued, and an execution unit is driven to complete automatic welding machining. The full-process data closed-loop management and control from accessory warehousing to finished product assembling are realized, the problems of data splitting, poor traceability and easy inflow of unqualified accessories in a traditional preparation link are solved, meanwhile, adaptation hidden dangers are checked in advance through digital verification, the limitation of manual design is broken through, the product percent of pass is greatly improved, the reworking cost is reduced, the production efficiency is improved, and the production cost is reduced. And a reliable basis is provided for high-quality preparation of the high-temperature lead-bismuth liquid alloy valve.

The invention discloses a low-carbon and energy-saving ore reduction method and device. Comprising the following steps: removing adsorbed water of a raw material by using waste heat of furnace gas, removing residual crystal water in the raw material by using the furnace gas generated by self reaction, performing pre-reduction, melt separation and deep reduction on metal oxide, preparing mixed high-temperature gas, continuously injecting the prepared liquid alloy into a high-frequency molten iron condenser at a constant flow rate, casting and the like. The physical sensible heat and chemical heat of the high-temperature reducing gas are fully utilized to heat the raw materials, and the high-temperature reducing gas is efficiently utilized; elements such as iron and nickel in the raw materials are subjected to solid-state reduction by fully utilizing carbon monoxide and hydrogen generated by chemical reaction in the lower hearth furnace, so that energy conservation, carbon reduction and emission reduction are realized; the temperature of the melting reaction zone is uniform, and under strong electromagnetic stirring, the heat transfer speed is high, the temperature gradient in the furnace is low, and the temperature equalization time is short; and the power consumption per unit product and the comprehensive energy consumption are respectively reduced by more than 20% and 26% compared with the national first-grade energy consumption limit.

The application provides a slow heat-storage-heat conduction synergic temperature control anti-cracking cement-based material and a preparation method thereof, and relates to the technical field of cement-based building materials. The material constructs a slow heat-storage-heat conduction synergic temperature control system by introducing a slow heat polymer, phase change capsules with different phase change temperature thresholds and liquid alloy heat conduction materials into a cement base. The slow heat polymer is used for delaying the early hydration reaction of cement and reducing the initial heat release rate. The phase change capsules with different phase change temperature thresholds absorb hydration heat in stages during the hydration process, realizing the step-by-step regulation of hydration temperature rise. The liquid alloy heat conduction material has the characteristics of phase change heat storage and high heat conduction, and can form an efficient heat transfer channel in the cement base, promote the uniform diffusion of heat and reduce the local temperature gradient. The synergistic effect of the three makes the hydration heat release peak present a hump distribution, effectively inhibits the temperature rise peak and temperature stress in the hydration process of cement, and significantly improves the anti-cracking performance of the cement-based material.

The utility model discloses a multifunctional adjustable dry sand box for a 3D printing sand mold. The multifunctional adjustable dry sand box comprises a bottom plate, a pair of L-shaped baffles, a cover plate and a limiting assembly. The bottom plate is rectangular, the baffles are spliced into a rectangular fence through screws and installed on the bottom plate, and triangular reinforcing blocks are arranged on the inner sides of the baffles to enhance rigidity. The cover plate is detachably installed on the fence, and the cover plate, the bottom plate and the fence jointly form the dry sand box. The limiting assemblies are arranged in the dry sand box in an array mode and used for limiting the sand mold, and the position precision of the sand mold in the 3D printing process is ensured. And the baffle is provided with the turnup and is detachably connected with the cover plate, the bottom plate and the other baffle through the mounting holes, so that the structural stability is enhanced. A round hole is formed in the middle of the bottom plate so that liquid alloy can be conveniently injected into a sand mold. Supporting strips and lifting handles are arranged on the outer sides of the baffles, and carrying and operation are convenient. Through the detachable structure and the adjustable limiting assembly, the device is suitable for sand molds with different sizes, the part taking process is simplified, the production efficiency is improved, and the maintenance cost is reduced.

A package assembly includes an interposer module on a package substrate, a liquid alloy thermal interface material (TIM) on the interposer module, a seal ring surrounding the liquid alloy TIM, and a package lid on the liquid alloy TIM and seal ring, wherein the seal ring, interposer module and package lid seal the liquid alloy TIM.

The utility model provides a leakproof gas purification device which comprises a purification tank body supported by supporting legs and a tank cover detachably fixed at the top of the purification tank body, a sealing ring is fixed on the inner wall of the tank cover, the sealing ring is sleeved with a gas inlet pipe fitting in an interference mode through a sealing strip on the inner side of the sealing ring, a support is fixed on the outer wall of the gas inlet pipe fitting, and the gas inlet pipe fitting is sleeved with a gas outlet pipe fitting. A telescopic device is fixed to the outer wall of the support through bolts, the telescopic end of the telescopic device is fixed to the outer wall of the top of the tank cover through bolts, and liquid alloy is arranged in the purification tank body; the gas impurity concentration after impurity removal is monitored by arranging the sensor assembly, and the depth of the gas inlet pipe fitting extending into the liquid alloy is controlled by utilizing the expansion of the expansion piece, so that the depth of the gas inlet pipe fitting can be controlled according to the comparison between the monitoring result and the required impurity concentration; on the basis that reliable impurity removal is guaranteed, the situation that the insertion depth of the air inlet pipe fitting is large, and the energy consumption rate is increased due to large air inlet resistance can be prevented.

The centrifugal liquid phase forming device and method for preparing ultra-fine tin-based alloy welding powder comprises a primary centrifugal device, a condensing device and a secondary centrifugal device; the primary centrifugal device comprises a centrifugal cup and an outer circular cup; the centrifugal cup rotates and the outer circular cup is fixed; a through hole is arranged on the cup wall of the centrifugal cup for the mixed solution to flow out; a rectangular hole is arranged on the cup wall of the outer circular cup; the rectangular hole of the outer circular cup is communicated with the condensing device; and the condensing device is communicated with the secondary centrifugal device. The mixed solution of the molten liquid alloy and the medium oil is injected into the centrifugal cup to be centrifugally mixed; the tiny droplets of the mixed solution centrifuged out of the rectangular hole of the outer circular cup enter the condensing device to be cooled; and the mixed solution of the alloy powder and the medium oil after being cooled enters the secondary centrifugal device to be centrifugally separated. The whole process is in the medium oil, which is simple and efficient; and the alloy particles are prevented from colliding in the forming process, so that the shape and size of the alloy particles are well maintained.

The utility model discloses a cooling device for low carbon silicon chromium alloy reduces phosphor, including rectangular copper board, the outside of rectangular copper board is equipped with hollow rectangular sleeve, the outer wall of rectangular copper board and the inner wall of hollow rectangular sleeve form liquid alloy flow guide interlayer cavity, the both ends of liquid alloy flow guide interlayer cavity are provided with annular plugging board, the number of annular plugging board is two groups, and two groups annular plugging board are fixed between the outer wall of rectangular copper board both ends and the left and right ends of hollow rectangular sleeve inner wall. The utility model discloses a cooling device for low carbon silicon chromium alloy reduces phosphor, through the synergies of multilayer reverse cooling, spiral flow guide heat transfer intensification, has improved the cooling efficiency and the effect of reducing phosphor of low carbon silicon chromium alloy, has solved the problem of low efficiency, poor uniformity of traditional cooling device.

The present application relates to carbon dioxide geological utilization and storage technology field, it is a kind of low melting point alloy wellbore plugging material sealing evaluation device and method, the former includes observation cylinder, outer tube, simulation wellbore, gas channeling simulation mechanism, formation pressure regulating mechanism, cooling mechanism, wellbore pressure regulating mechanism and image acquisition unit.The present application is reasonable and compact in structure, alloy material in simulation wellbore is in alloying stage, sealing thimble prevents liquid alloy from flowing into first gas injection hole, after alloy material in simulation wellbore solidifies, sealing thimble is moved downwards, so that the upper end of sealing thimble is located below first gas injection hole, so that gas channeling simulation mechanism and lower part of simulation wellbore are connected, formation pressure regulating mechanism is connected with confining pressure cavity through pressure-increasing hole when working, can simulate the effect on the formation pressure around simulation wellbore, realize low melting point alloy material heating melting-cooling forming process, evaluate the sealing capacity of alloy plug-casing combination under actual downhole working condition.

The invention discloses gallium-based liquid metal microspheres as well as a preparation method and application thereof, and belongs to the field of catalytic materials. The gallium-based liquid metal microsphere has a core-shell structure, an inner core is a liquid alloy, and an outer shell is a crystalline alloy; the surface of the liquid alloy is uniformly coated with the crystalline alloy, and the average particle size of the microspheres is 100-1000 nm. The preparation method comprises the following steps: (1) interface activation and system construction: adding a liquid alloy into a solvent and acidifying the liquid alloy; (2) adding a metal salt precursor; (3) ultrasonic induced synthesis: under the protection of inert atmosphere, performing pulse ultrasonic treatment on the mixture obtained in the step (2); and (4) post-treatment: separating, washing and drying the product obtained in the step (3) to obtain the gallium-based liquid microspheres. The gallium-based liquid metal microsphere provided by the invention can achieve the effects of high catalytic activity, uniform and stable core-shell structure and long cycle service life.

The invention relates to the technical field of preparation of catalysts, in particular to a CuNiSn-based molten catalyst for preparing graphene and a preparation method of the CuNiSn-based molten catalyst for preparing the graphene. The preparation method comprises the steps that S1, NiO-SnO2 precursor powder is prepared; s2, NiO-SnO2 powder and copper particles are mixed, mixed gas with the volume ratio of nitrogen to hydrogen being 1: 2 is injected into a reactor, then the temperature is increased to 800 DEG C, heat preservation is conducted for 3-4 h, and CuNi-Sn alloy blocks are obtained after the temperature is decreased to the room temperature; and S3, a smelting furnace is preheated in advance and pumped to a high-vacuum state, the CuNi-Sn alloy block and the alloy modifier are put into a crucible and put into the smelting furnace, it is ensured that the CuNi-Sn alloy block and the alloy modifier are fully mixed with the CuNi-Sn alloy block, then heat preservation is conducted for 10-15 h, and the CuNiSn-based fusion catalyst for preparing the graphene is obtained after the CuNi-Sn alloy block is cooled to the room temperature. The low solubility and high diffusivity characteristics of Ga and the ability of In to reduce the viscosity of the Ga-Sn liquid alloy, improve the carbon diffusion kinetics and enhance the electron transfer efficiency in cooperation with a conductive network of boron-doped graphdiyne jointly act on the waste plastic cracking process, the number of carbon layers of graphene can be effectively controlled, and the specific surface area and quality of graphene can be improved.

The utility model belongs to the technical field of heating tapes, and discloses an anti-impact amorphous alloy heating tape, which comprises two heating tape bodies, the two heating tape bodies are made of amorphous liquid alloy materials, and the two heating tape bodies are distributed in parallel. The heating tape comprises two heating tape bodies, the corresponding sides of the two heating tape bodies are jointly provided with an elastic buffer net, the outer surfaces of the two heating tape bodies are jointly provided with a composite layer, the outer surface of the composite layer is provided with a wear-resistant buffer rubber layer, and the outer surface of the wear-resistant buffer rubber layer is provided with a protective shell layer. Under the action of the elastic buffer net and the buffer spring, interaction force generated by impact between the two heating belt bodies can be effectively buffered, damage to the heating belt bodies caused by collision is reduced, the impact resistance of the heating belt is greatly improved, and stable operation of the heating function under complex working conditions is guaranteed.

The invention provides a high-temperature superconducting composite wire and a preparation method and application thereof. The high-temperature superconducting composite wire comprises a copper sleeve and a composite material filled in the copper sleeve, the composite material comprises a gallium-indium-tin liquid alloy and a carbon material, the carbon material comprises graphene and / or carbon nanotubes. The wire has excellent mechanical strength and thermal stability, and is suitable for the fields of power transmission, low-temperature electronic device and high-performance conductor manufacturing and the like. Experimental results show that the resistivity and the temperature are in a power law relationship in a high-temperature region, the low-temperature region is well fitted with a Block-Gruneisen equation, and the material enters a superconducting (extremely low resistance) state in an extremely low-temperature region. The technology is wide in application range including superconducting wind power generation cables, low-loss power transmission, high-performance magnets and the like, and the performance and efficiency of related fields are remarkably improved.

The invention belongs to the technical field of liquid metal alloy performance detection, and relates to a liquid metal alloy melting point prediction system and a melting point prediction method. The prediction method comprises the following specific steps: sample liquid pretreatment, LIBS spectrum acquisition, LIBS spectrum data processing and sample melting point prediction, and comprises the following steps: acquiring LIBS spectrum data of liquid alloys with different components of different types, and extracting spectrum characteristics by principal component analysis; and a double-layer neural network model is trained by spectral feature data to realize regression prediction with stable melting points, and the average absolute error of a prediction result is less than 0.13 DEG C. Compared with a traditional thermal analysis technology, the method has the advantages of quick response, automatic processing and the like, is suitable for trace sample and dynamic detection scenes, and provides an efficient technical path for liquid metal physical property parameter identification.

The invention discloses a high-capacity and long-life RE (La, Y, Pr)-Mg-Ni-based AB2 type hydrogen storage alloy for a Ni-MH battery and a preparation method of the hydrogen storage alloy, and relates to the technical field of hydrogen storage alloy materials, the alloy comprises the following components: La 0.9-x Y x Pr 0.1 MgNi 4-y-z-mCo y Al z Mnm, in the formula, x, y, z and m are atomic ratios and 0 lt; x is less than or equal to 0.2, 0lt; y is less than or equal to 0.5, 0lt; z < = 0.5, 0lt; m < = 0.5; the preparation method of the alloy comprises the following steps: smelting by induction heating under the protection of inert gas, and casting by a copper mold to obtain a master alloy ingot; the alloy ingot is placed in a quartz tube with a slit in the bottom, induction heating is conducted till the ingot is completely molten, liquid alloy is sprayed to the surface of a rotating water-cooling copper roller from the slit in the bottom of the quartz tube under the action of protective gas pressure, and a rapid quenching alloy thin strip is obtained; co, Al, Mn and multi-element rare earth elements La, Y and Pr are added, and a microstructure with nanocrystalline is formed through rapid quenching treatment, so that the electrochemical capacity of the alloy is greatly improved, and the cycle life of the alloy is greatly prolonged; the preparation process has the characteristics of easiness in mastering and suitability for large-scale production.

This invention discloses a method for preparing FeCr-WC / TiC composite alloy powder, comprising the following steps: a) mixing iron, chromium, titanium, zirconium, manganese, silicon, and molybdenum sources according to a designed ratio, heating to the melting temperature, and melting into a liquid alloy; b) adding WC and TiC powders to the liquid alloy from step a, stirring and mixing until the WC and TiC powders dissolve; c) atomizing the mixture obtained in step b to obtain FeCr-WC / TiC composite alloy powder. The FeCr-WC / TiC composite alloy powder prepared by this method has a uniform chemical composition. After being prepared into alloy ingots using the hot isostatic pressing method, it exhibits good wear resistance, impact toughness, and radiation resistance, which can greatly improve the service life of the material under complex working conditions.

This invention discloses a green and energy-saving extrusion casting method and apparatus that combines liquid phase retention and forced feeding sequential solidification. The method includes the following steps: melting a pre-proportioned metal to obtain a basic alloy melt; degassing and refining followed by the addition of an intermediate alloy to obtain an intermediate alloy melt; lowering the temperature to obtain a finished alloy melt; during casting, adjusting the ingate temperature between the solid and liquid phases of the finished alloy melt; and activating a multi-point positioning cooling device to locally force-cool areas with large wall thicknesses. This invention, by precisely controlling the ingate temperature between the solid and liquid phases of the alloy melt, ensures that the alloy melt at the ingate is in a solid-liquid mixed state during pressure holding solidification. The liquid alloy melt can smoothly pass through the gap between the primary solid phases and flow into the shrinkage cavities of the casting body during pressure holding solidification, achieving further forced feeding of the liquid during the pressure holding process of alloy melt extrusion casting. This results in high-quality castings with high microstructure density, few shrinkage cavities and porosity defects, and excellent strength and elongation.

The utility model belongs to the technical field of metal processing, and particularly relates to an alloy material casting mechanism which comprises a bottom plate, front and back opposite sliding rails are fixedly connected to the top end of the bottom plate, a moving assembly is arranged at the top ends of the sliding rails, a fixing frame is arranged at the top end of the moving assembly, and a discharging assembly is arranged at the top end of the fixing frame. A discharging hopper is fixedly connected to the middle end of the left side of the fixing frame, first supporting frames which are opposite front and back are fixedly connected to the outer side of the middle end of the discharging hopper, a second motor is fixedly connected to the front end of the first supporting frame at the front end, and a driving gear is fixedly connected to the output end of the second motor; according to the alloy material casting mechanism, the discharging assembly is driven by the moving assembly to move, so that liquid alloy can be cast into the inner sides of different molds, continuous casting is achieved, production efficiency is improved, energy consumption and cost are reduced, product quality is improved, production capacity is improved, and resource waste is reduced.

The application provides a contact lens sensor preparation method and a contact lens sensor. The preparation method comprises the following steps: forming an inner thin film layer by inverse molding, and forming a first rough area and a first smooth area on the upper surface of the inner thin film layer; placing the inner thin film layer in a liquid alloy, and adhering the liquid alloy to the first smooth area to form a liquid alloy layer, so as to obtain a two-layer structure; forming an intermediate thin film layer on the upper surface of the two-layer structure by inverse molding of a thin film material, and forming a second rough area and a second smooth area on the upper surface of the intermediate thin film layer, so as to obtain a three-layer structure; placing the three-layer structure in a liquid alloy to form an outer liquid alloy layer, so as to obtain a four-layer structure; inversely molding the upper surface of the four-layer structure to form an outer thin film layer, so as to obtain a five-layer structure; and demolding the five-layer structure to obtain the contact lens sensor. The preparation method has the process advantages of simple principle, few processes, high success rate, high efficiency, easy integration with a beauty lens production line and mass production.