82 results about "Metal droplets" patented technology

The invention discloses a bimetallic composite material preparation method and system based on metal droplet size regulation and control, and belongs to the technical field of centrifugal casting. According to the method, aiming at a bimetal system with a liquid-liquid mixing and dissolving gap, an alloy melt is smelted according to a preset proportion, and then precise control over the size of second metal phase liquid drops is achieved in a casting ladle by regulating and controlling the standing time in combination with a high-temperature and high-speed camera shooting system. Then relevant casting parameters are input into an autonomously derived liquid drop movement speed and trajectory prediction model, the liquid drop position is predicted, and finally the centrifugal rotating speed or the heating power is adjusted through feedback control according to the deviation between a prediction result and a preset trajectory, so that directional preparation of different structures of the bimetal composite material is achieved. The corresponding system comprises a monitoring module, a calculation module and an execution module which cooperatively complete parameter monitoring, calculation analysis and precise regulation and control in the material preparation process. The casting inclusion defect can be reduced, the product quality instability is reduced, and directional preparation of different structures of the bimetal composite material is achieved.

An apparatus for producing drops of liquid metal for additive manufacturing comprises a reservoir for supplying liquid metal and a pressure chamber in fluid communication with the reservoir. The pressure chamber has a channel therein where compressive forces are applied on the liquid metal therein. Upper and lower electrodes apply a current through the liquid metal in the pressure chamber. This current creates an electric field that produces radially inward directed Lorentz forces on the liquid metal. This compressive force provides pressure in the longitudinal direction for ejecting the liquid metal through the orifice to form liquid metal droplets.

The invention relates to the technical field of additive manufacturing, in particular to a molten metal drop spraying additive manufacturing system and method.The core structure of the system is a multi-pole electric arc melting-molten metal drop spraying integrated composite sprayer, and continuous feeding metal wires are efficiently smelted through double-bypass MIG electric arcs; the pulse heating power generated by the central plasma arc in a high-frequency state is adjusted, and the molten metal is driven to be sprayed out from a nozzle below the spray head in cooperation with air pressure, so that jet deposition with stable and adjustable molten drop size and frequency is realized. According to the composite nozzle structure, a first-stage structure for achieving efficient metal smelting is composed of a center plasma arc-double-bypass MIG composite multi-pole arc and a feeding welding wire, and a second-stage structure for achieving metal rectification-injection is composed of a small funnel-shaped buffer cavity and a tail end nozzle. The system has the characteristics of small size, easiness in carrying, high integration, wide application range and the like.

The present disclosure relates to a liquid metal jetting ejection nozzle having a nozzle main body and a wetting plate. The nozzle main body has an enlarged opening at a distal end through which a molten metal feedstock material flows during a liquid metal jetting operation, and is formed from a first material having a first wetting characteristic. The wetting plate has an aperture and is secured to the enlarged opening of the nozzle main body. The wetting plate has a second wetting characteristic of a magnitude less than the first wetting characteristic to at least inhibit wetting. This two piece nozzle construction enables optimum materials and construction / fabrication techniques to be used for both components, thus improving performance, durability and reliability of the ejection nozzle.

This invention discloses an on-demand metal jet forming method based on forced vibration, belonging to the field of 3D printing technology, including the following steps: Step 1, calculating the resonant frequency f of the molten metal column in the nozzle. n Step 2: Determine the excitation frequency f of the forced vibration system; Step 3: Input an excitation signal with frequency f into the forced vibration system, which drives the nozzle to vibrate axially; The forced vibration of the nozzle includes an unstable start-up stage and a stable stage. After the nozzle vibration enters the stable stage, a stable metal droplet jet with frequency f is generated; Step 4: After obtaining the stable metal droplet jet, the base plate is subjected to three-dimensional motion, and metal deposition is performed using the metal droplet jet to complete the forming of the metal component. The spraying frequency of this invention can reach tens of thousands of hertz, which can greatly improve the manufacturing efficiency of droplet-spraying metal additive manufacturing.

A method for controlling temperature in a liquid metal three-dimensional (3D) printing system is disclosed, including ejecting a liquid metal drop from a nozzle onto a deposition location to form a portion of a three-dimensional object. The method also includes measuring a temperature at a measurement spot location offset from the deposition location, and comparing the measured temperature with a set point temperature in the deposition location, adjusting a cooling rate of the liquid metal drop. The deposition follows a toolpath to form the portion of the three-dimensional object. The measurement spot location can be located within the toolpath or outside of a toolpath of the three-dimensional object being formed. An additive manufacturing device configured to perform the method includes a printhead that includes a nozzle having an inner cavity, where the nozzle is configured for ejecting droplets of liquid metal drops to form a three-dimensional object.

The present disclosure relates to a system for additive manufacturing. The system includes a frame, a CNC bed configured with the frame. A metal dispensing mechanism configured to eject metal droplets on the CNC bed. The metal dispensing mechanism is configured to controllably move with respect to the CNC bed for manufacturing the object. The metal dispensing mechanism includes a first nozzle, functionally configured with the CNC bed, for controllably dispensing the metal droplets on the CNC bed, and the nozzle is fluidically configured with a reservoir having the metal. A piston configured with the reservoir, and the piston is configured to push the molten metal from the reservoir such the molten metal is released from the reservoir towards the first nozzle. The piston is made of thermally insulating material, and a transducer configured with the piston to facilitate mechanical jerking of the piston for facilitating the pushing of the molten metal from the reservoir.

The invention provides a method and device system for continuously producing carbon nanotubes, and the method comprises the following steps: (1) carrying out high-temperature gasification on a metal raw material in a protective gas atmosphere to obtain a metal steam mixture; (2) the metal steam mixture obtained in the step (1) is subjected to rapid quenching through an annular air knife, and metal nanoparticles or metal liquid drops are obtained; (3) mixing a carbon precursor, an accelerant, reducing gas and the metal nano-particles or the metal liquid drops obtained in the step (2) to react, and separating to obtain the carbon nano-tubes; wherein the temperature of high-temperature gasification in the step (1) is greater than or equal to 2200 DEG C; the cooling rate of the rapid quenching in the step (2) is greater than or equal to 1 * 10 < 4 > DEG C / s. The industrial mass production of the carbon nanotubes is realized, the yield and quality of the carbon nanotubes are considered, the carbon source conversion rate is increased, the number of layers of the carbon nanotube walls is accurately controlled, retention and blockage of side reaction products are avoided, the reaction continuity is improved, and large-scale popularization and application are facilitated.

The invention discloses a micro-structure printing and interface bonding method for T / R assembly heat dissipation, and belongs to the field of high-silicon-aluminum surface heat dissipation micro-structure forming. Sequentially carrying out three-stage pretreatment of chemical corrosion, ultrasonic vibration grinding and metal wire drawing on the surface of the high-silicon aluminum matrix to obtain the high-silicon aluminum matrix surface with enhanced adhesive force; removing the aluminum element on the surface of the high-silicon aluminum substrate through chemical corrosion, so that the silicon particles on the top are exposed on the surface; removing silicon particles exposed on the surface by ultrasonic vibration grinding; processing lines on the surface after the silicon particles are removed through metal wire drawing; heating the high-silicon aluminum substrate with enhanced adhesive force, and depositing aluminum liquid drops on the surface of the high-silicon aluminum substrate in an inert gas environment through a uniform metal micro-drop spraying device; a heat dissipation microstructure is formed through layer-by-layer printing, liquid drops on the first layer are metallurgically bonded with a high-silicon-aluminum matrix through laser melting, and subsequent layers are fused through waste heat. The method solves the problems that the wettability of high-silicon aluminum is poor, and an oxide layer hinders combination.

An oxide dispersion strengthened metal powder for 3D printing and a preparation method therefor. The method comprises the following steps: S1, a smelting process: putting a metal ingot into a vacuum smelting furnace or powder making device integrated feeding system, vacuumizing and melting at a high temperature into a molten state to obtain a melt; S2, an atomization process: putting the melt into a powder making device, the melt generating small metal droplets in a reaction chamber to form fine spherical metal powder, and sieving the fine spherical metal powder under a protective atmosphere to collect fine spherical metal powder of required granularity, wherein oxygen is doped in the smelting process and / or the atomization process. Oxide particles can be dispersed inside and outside the metal powder, the problem that oxide can only be added on the surface in thermal oxidation and mechanical grinding is solved, the laser absorptivity is increased, and the 3D printing performance of the metal powder is improved.

Systems and methods for creating molten metal droplets are disclosed. The systems may be used for 3D printing. The system relies on a change in momentum of the droplet relative to the tip of the metal microwire to cause the droplet to separate from the tip of the metal microwire. The change in momentum can be created using a force generator. In some embodiments, the system can adjust electrical parameters to form metal droplets with desired parameters.

The invention discloses a drop tube metal microdroplet deposition device and method for simulating a space environment. The device comprises a drop tube; a metal microdroplet nozzle is mounted at the top of the drop tube, a composite substrate is arranged below the metal microdroplet nozzle, a replaceable tested substrate is arranged in the middle of the composite substrate, and two ends of the composite substrate are matched with a release mechanism arranged on the inner wall of the drop tube; a transparent window is arranged on the side wall of the drop tube below the composite substrate, and an image collecting device is arranged on one side of the window; when the metal liquid drops of the experimental metal material start to fall off from the metal micro-drop spray head, controlling the release mechanism to release the composite substrate after a preset time; the metal liquid drops and the composite substrate are pursued and contacted in a weightlessness falling state, are captured and recorded by the image acquisition device through the window, and then are transmitted to the upper computer for subsequent analysis. The technical problem that in the prior art, the contact solidification process of the metal liquid drops and the substrate in the space microgravity environment cannot be truly simulated on the ground is solved.

The application relates to the technical field of extreme ultraviolet light generation, in particular to a magnetic levitation potential well coagulation device and a metal droplet coagulation method. The magnetic levitation potential well coagulation device comprises a magnetic potential well generator, a detection sensor and a controller. The magnetic potential well generator is arranged at the downstream of a metal droplet generator, and the magnetic potential well generator is configured to generate a magnetic potential well to generate a force on the metal droplets output by the metal droplet generator, and the force can reduce the movement speed of the metal droplets. The detection sensor is arranged at the downstream of the magnetic potential well generator, and the detection sensor can detect the size of the metal droplets. The detection sensor and the magnetic potential well generator are in communication connection with the controller, and the controller is configured to control the start, the stop and the adjustment of the strength of the magnetic potential well generator according to the detection result of the detection sensor. The metal droplet coagulation method can make the size of the metal droplets meet the generation requirements of extreme ultraviolet light when applied to the above-mentioned magnetic levitation potential well coagulation device.

The present disclosure relates to a liquid metal jetting ejection nozzle having a nozzle main body and a wetting plate. The nozzle main body has an enlarged opening at a distal end through which a molten metal feedstock material flows during a liquid metal jetting operation, and is formed from a first material having a first wetting characteristic. The wetting plate has an aperture and is secured to the enlarged opening of the nozzle main body. The wetting plate has a second wetting characteristic of a magnitude less than the first wetting characteristic to at least inhibit wetting. This two piece nozzle construction enables optimum materials and construction / fabrication techniques to be used for both components, thus improving performance, durability and reliability of the ejection nozzle.

The invention relates to the technical field of fire monitoring, in particular to an electrical cabinet fire monitoring device which comprises an alarm module and a monitoring module. The monitoring module comprises a controller and a monitoring module; the monitoring module comprises a monitoring interface, an insulating heat conduction pipe and a conductive thermal fuse; the inner diameter of the insulating heat conduction pipe is greater than the diameter of the conductive thermal fuse; the monitoring interface comprises an input interface and an output interface, the two ends of the conductive thermal fuse are connected to the input interface and the output interface respectively, and the middle portion between the two ends of the conductive thermal fuse penetrates through the insulating heat conduction pipe. The controller is electrically connected with the monitoring module, the controller supplies power to the output interface and detects whether the corresponding input interface is connected or not, and if not, the controller activates the alarm module; according to the invention, through the conductive thermal fuse, when the preset temperature is reached, the conductive thermal fuse is heated and molten, the molten conductive thermal fuse gathers into a group of metal liquid drops under the action of liquid level tension, the liquid metal liquid drops cannot maintain the filamentous state to form an open circuit, and then an alarm is given after the state is detected.

The present invention provides a metal micro-droplet additive manufacturing device, which relates to the technical field of metal additive manufacturing and includes a heating mechanism, a feeding mechanism and an electromagnetic driving mechanism; by using molten liquid metal micro-droplets to remelt, solidify and stack layer by layer, using metal wire materials as printing consumables to replace the expensive metal powders required for traditional metal additive manufacturing, without integrating expensive laser, arc, electron beam equipment, nor post-treatment processes such as sintering, using a non-contact electromagnetic driving method, replacing the printing material with molten liquid metal substances, and utilizing the magnetohydrodynamic properties of liquid metals to generate metal micro-droplets with higher frequencies and droplet masses, and directly using them for 3D printing of metal parts, alleviating the technical problems of high raw material costs, expensive equipment, low printing rates in the prior art, resulting in high costs of metal 3D printing.

The invention belongs to the technical field of uniform metal microdroplet jetting devices, and particularly relates to a gas-liquid channel separation type uniform metal microdroplet stable jetting device which comprises a high-temperature heating furnace used for heating metal raw materials; the crucible is located in the high-temperature heating furnace and used for containing metal raw materials and a solution of the metal raw materials; and the spraying assembly comprises an outer runner, a nozzle and a control assembly, and the outer runner is connected to the bottom of the high-temperature heating furnace. By arranging the control assembly, when protective gas passes through the gap between the outer flow channel and the nozzle, the counterweight ring can always apply upward push to the sealing plug through the ejector rod, so that the sealing plug can always cooperate with the sealing ring to apply pressure to the protective gas passing through the gap between the sealing plug and the sealing ring; therefore, the protective gas is always kept at a certain pressure when passing through the gap between the nozzle and the nozzle, turbulent flow generated near the nozzle due to insufficient pressure of the protective gas is avoided, and the stability of metal jet flow is ensured.

The application discloses a gas discharge tube, and belongs to the technical field of discharge tubes. The gas discharge tube comprises an electrode, a ceramic tube wall and electronic powder. The electrode comprises an outer electrode and an inner electrode. The inner electrode is fixedly connected with the inner side wall of the outer electrode. The outer electrode is fixedly and sealingly connected with the ceramic tube. The inner electrode is in a groove shape. The groove opening of the inner electrode is arranged away from the outer electrode. The electronic powder is adhered to the bottom wall of the groove of the inner electrode. The inner electrode with the groove and the electrode powder adhered to the grid can effectively reduce the spatter probability of the electrode powder. Meanwhile, the inner electrode with high temperature resistance can avoid the formation of metal droplets. The groove of the inner electrode can avoid the accumulation of the electrode liquid and the electrode powder to form a conductive belt, and can avoid the discharge tube from being in a short circuit state for a long time. The discharge tube of the application will not fail in short circuit, and the service life of the discharge tube is effectively prolonged.

The utility model relates to a combined heating device of an electrode induction melting gas atomization powder making furnace, and belongs to the technical field of metal powder preparation. Comprising a material hanging device (1), a high-frequency induction coil (5), a medium-frequency induction coil (4) and a fixing rod (2), and the medium-frequency induction coil (4) is arranged over the high-frequency induction coil (5); the fixing rod (2) is arranged on the material hanging device (1), the material hanging device (1) can enable the fixing rod (2) to move up and down, the fixing rod (2) is located over the medium-frequency induction coil (4), and the lower end of the fixing rod (2) is connected with the metal rod (3). According to the device, the degree of superheat of falling metal molten drops is increased through twice heating of the medium-frequency induction coil (4) and the high-frequency induction coil (5), and the yield of fine powder is increased. The fixing rod (2) ensures that the single metal rod (3) is melted as much as possible, and the powder collecting rate of the single metal rod (3) is increased. The problems that the heating power of existing equipment is limited, the superheat degree of metal molten drops is difficult to increase, and the equipment transformation cost is high are solved.

This invention provides a preventive maintenance operation method for a lithography system, comprising the following steps: spraying metal droplets from the reservoir of a droplet generator toward an excitation area in front of a collector; emitting an excitation laser toward the excitation area, causing the metal droplets to be heated by the excitation laser to generate extreme ultraviolet (EUV) radiation; stopping the emission of the excitation laser; depressurizing the reservoir of the droplet generator; cooling the droplet generator to a temperature not lower than approximately 150°C; and backfilling the reservoir of the droplet generator with solid metal material at a temperature not lower than approximately 150°C.

The invention provides fire simulation equipment for power cable short circuit. The cable simulation system comprises an experimental cable and a pipe gallery simulation piece, the pipe gallery simulation piece is used for simulating a limited long and narrow environment where a real short-circuit cable is located, the supporting system is arranged in the pipe gallery simulation piece, and the experimental cable is horizontally placed on the supporting system; the heating system is electrically connected with the experimental cable and is used for introducing overload current into the experimental cable, the ignition system can generate molten metal drops, the ignition system is provided with a liquid outlet used for discharging the molten metal drops, and the liquid outlet of the ignition system is located above the experimental cable and enables the molten metal drops to drop on the experimental cable. Therefore, the short-circuit current heat effect and metal droplet ignition simulation reproduction of the experimental cable can be realized. According to the technical scheme, the problem that in the prior art, the accuracy of the simulation effect of fire simulation equipment for power cable short circuit is poor is solved.

This invention belongs to the field of laser cladding technology, and particularly relates to an apparatus and method for ultrasonic atomization-assisted ultra-high-speed wire feeding cladding. The apparatus includes a laser head follower plate, on which a laser head, an ultrasonic device, and a wire feeding device are connected. The follower plate is connected to a moving mechanism, and a machining axis rotation mechanism with a shaft to be processed is provided on the side. The laser head, ultrasonic device, and wire feeding device can move synchronously. The output end of the wire feeding device clamps the wire relative to the vibration end of the ultrasonic device. The ultrasonic device causes the wire to vibrate at high frequency, and the wire feeding device delivers the end of the wire to directly below the laser head's emitting end. The ultrasonic device includes components such as an amplitude transformer and a transducer, and the wire feeding device is equipped with a straightener, auxiliary wire guide wheel, and other structures. The clamping part enables the fixing and position adjustment of each component. This invention also discloses a method of using the apparatus, which refines the metal droplets through ultrasonic atomization, reduces the thickness of the cladding layer, ensures stable wire feeding, adapts to ultra-high-speed cladding processes, avoids defects in powder feeding cladding, reduces cladding costs, and improves cladding efficiency.

The present invention discloses an arc ion plating device with central air intake, comprising a vacuum coating structure and an arc ion plating body. The vacuum coating structure is provided with a vacuum coating chamber, wherein the upper portion of the chamber is connected to a guide hood and a downcomer, the downcomer has a centrifugal hole, and is also provided with a high-temperature resistant crushing sleeve, an air guide screw rod, etc., which can effectively deal with the problem of large particle droplets generated during the coating process; compared with the existing technology, the design of the centrifugal hole of the downcomer and the wall-attached peak hole of the high-temperature resistant crushing sleeve can make the metal droplets form a wall hanging layer during coating, avoid deposition on the surface of the film layer, reduce the roughness of the film layer, and improve the appearance and functionality of the workpiece; the driving motor drives the air guide screw rod through the speed-increasing gearbox, and the gear transmission is combined to make the workpiece rotate at a uniform speed, optimize the ion bombardment deposition angle, and prepare high-quality thin films. In addition, the special structure on the side of the high-temperature resistant crushing sleeve can realize the switching of the centrifugal area, which is convenient for removing and processing the internal metal pipe body after coating, and is beneficial to material recovery and equipment maintenance.

The utility model provides a heat dissipation magnet device for metal liquid drop spraying, and relates to the technical field of heat dissipation devices. Comprising a nozzle body, a magnet, a heat dissipation body and a heat dissipation fan, the magnet is arranged between the nozzle body and the heat dissipation body, the heat dissipation fan is arranged on the side, away from the magnet, of the heat dissipation body, and the heat dissipation fan is suitable for conducting heat dissipation on the heat dissipation body in an air suction mode. According to the scheme, the heat dissipation effect can be improved, and the influence on metal liquid drop spraying is reduced.

The invention relates to the technical field of nickel-based material manufacturing, in particular to a nickel-based material manufacturing process which comprises the following steps: performing hot melting on a metal raw material of a nickel-based material to obtain a metal melt; according to a comparison result of the stream diameter fluctuation quantity and a preset fluctuation quantity, the injection pressure of the atomized gas is determined; predicting an expected cooling rate after atomization according to the injection pressure; the temperature and the initial tangential spraying direction of cooling air flow surrounding the atomization cone are adjusted according to the expected cooling rate; carrying out atomization crushing on the metal melt according to the injection pressure to form metal liquid drops; condensing the metal liquid drops according to the temperature of the cooling air flow and the initial tangential spraying direction of the cooling air flow so as to obtain nickel-based alloy powder; the satellite powder proportion in the nickel-based alloy powder is obtained, and the preset fluctuation quantity is adjusted according to the satellite powder proportion; and the nickel-based alloy powder is subjected to vacuum curing forming to obtain a nickel-based material biscuit. According to the method, the preparation precision of the nickel-based alloy powder is improved.

This invention provides an environmentally friendly smelting system for waste circuit boards, which maintains high production capacity while meeting environmental protection requirements for production and processing. It utilizes an environmentally friendly smelting furnace to process waste circuit boards. Waste circuit boards, along with auxiliary materials, are continuously fed into the furnace cavity from the top inlet. Combustion air is blown in from the bottom air inlet, and the fuel undergoes high-temperature combustion near the air inlet, forming a high-temperature smelting zone. In the charge column zone, the charge undergoes preheating, pyrolysis, sintering, and melting reactions sequentially from top to bottom. After being reduced and melted, the metal in the smelting zone undergoes vertical movement from top to bottom, during which metal droplets aggregate and grow, separating from the slag, thus completing the separation and recovery of the metal.

The application relates to the technical field of metallized film capacitor manufacturing, and provides a spraying gold quality detection method and system. The method comprises the following steps: fixing a dry white printing paper to a placing position consistent with a metallized film capacitor core through a clamp, starting a spraying gold device, controlling a spraying gun to spray towards the printing paper according to preset production process parameters, simulating a process in which an end surface of the capacitor core bears a spraying gold thermal impact, and enabling metal droplets to adhere to the surface of the printing paper; moving the printing paper after the spraying operation away from a spraying gun operation area, and obtaining a color change state of the printing paper after being heated; obtaining a color matching temperature after calibration and a corresponding standard of a risk level, judging a current spraying gold temperature interval and a hidden danger of thermal damage of the core according to the color matching temperature, the corresponding standard of the risk level and the color change state of the printing paper, and adjusting operation process parameters of the spraying gold device according to the hidden danger of thermal damage. The method can comprehensively reflect the overall thermal impact effect of a spraying gold flow.

The application provides a kind of based on pulse detonation wave powder preparation equipment and powder preparation method, belongs to metal powder preparation field.Powder preparation equipment includes: detonation reaction chamber, material melting feeding module, pulse detonation generation module and powder collection chamber;Material melting feeding module is processed into the molten metal stream of metal bar material and enters the detonation reaction chamber, under the action of pulse detonation wave of pulse detonation generation module, cavitation is broken into small metal droplets, and under the action of high-speed inert gas flow, it enters the powder collection chamber through the outlet of detonation reaction chamber, and metal powder is obtained.The application applies pulse detonation technology to metal powder preparation, compared with traditional metal powder preparation process, pulse detonation wave powder preparation can significantly improve production efficiency, and ensure the uniformity of metal powder morphology and granularity, improve the machinability of metal powder.The equipment and method of the application are widely applicable to various common metals and alloy materials, and have good popularization and application prospect.

The application discloses a kind of for space electron beam welding test device, comprising: equipment controller, inside the box is placed, with moving mechanism, infrared thermal imaging detector and electron beam gun connection;Mobile control instruction is sent to moving mechanism, and the detection of structural temperature field distribution performance;Electron beam gun, the electron beam generated, for the welding, cutting or additive forming on test workpiece after heating and melting of metal wire;Excess protection device is placed below electron beam gun, to prevent metal droplet on test workpiece from flying out.Infrared thermal imaging detector, the cutting, welding and additive process of electron beam gun are photographed;Temperature is measured;Moving mechanism moves according to mobile control instruction;Radiation plate radiates heat generated to the outside of box;Test workpiece is placed on the upper surface of excess protection device, excess protection device is connected with moving mechanism, moves with moving mechanism, drives test workpiece to move, realizes the processing of test workpiece.

The invention discloses a method and a device for measuring the morphological oscillation eigenfrequency of an electrostatic suspension metal droplet, and relates to the field of liquid metal thermophysical parameter measurement, the method comprises the following steps: determining the instantaneous amplitude for each oscillation image under each excitation frequency, performing Fourier transform and fitting on the instantaneous amplitude of each oscillation image, and obtaining the morphological oscillation eigenfrequency of the electrostatic suspension metal droplet. The form oscillation frequency and amplitude of the metal liquid drops under the current excitation frequency are obtained; drawing forward and reverse morphological oscillation amplitude-frequency curves according to the morphological oscillation frequency and amplitude under each excitation frequency; according to the method, the metal droplet form change is comprehensively analyzed, the form oscillation process is subjected to datamation processing, the problem that resonance is not accurately judged through visual inspection of the metal droplet is avoided, the mean value of the forward oscillation frequency and the reverse oscillation frequency serves as the metal droplet form oscillation eigenfrequency, and the accuracy of the metal droplet form oscillation eigenfrequency is improved. The hysteresis effect is fully considered, and high-precision eigenfrequency measurement is realized.