276 results about "Vacuum electronics" patented technology

The invention relates to the technical field of metal materials, and discloses a preparation method of high-purity vanadium, which comprises the following steps: step 1, controlling the purity, granularity and content of raw materials for preparing a vanadium-aluminum intermediate alloy; 2, carrying out an aluminothermic reaction in a vacuum aluminothermic smelting furnace; thirdly, a plate ingot is smelted in a vacuum electron beam horizontal furnace for the first time; fourthly, the plate ingot is smelted in the vacuum electron beam horizontal furnace for the second time; and 5, smelting the high-purity vanadium ingot in a vacuum electron beam ingot pulling furnace. According to the method, traditional slag formers such as CaO are not used, so that alloy components are more stable in the smelting process, component fluctuation caused by the reaction of the slag formers and main reactants is reduced, the reaction temperature and degree are controlled by controlling the addition amount of the Al2O3 cooling material, energy is saved, and the smelting cost is reduced; the beneficial effects that a CaO slag former does not need to be used, and introduction of impurities is avoided are achieved.

The invention relates to a vacuum electron beam welding method for an extra-thick double-sided stainless steel composite blank. The vacuum electron beam welding method comprises the steps that S1, a blank is prepared; s2, processing the surface of the base material carbon steel; s3, processing the surface of the composite stainless steel; s4, assembling and vacuum electron beam direct welding are carried out twice; s5, performing surface anti-oxidation spraying and packaging treatment on the double-sided composite blank after secondary welding; s6, heating the composite blank in a heating furnace, and rolling; and S7, the composite blank is rolled to the thickness required by the product according to the rolling ratio required by the finished product, and the stainless steel + carbon steel + stainless steel extra-thick double-sided stainless steel composite plate can be obtained after cooling. According to the method, the key technical bottleneck of producing the extra-thick double-sided stainless steel composite blank through the vacuum electron beam welding process is solved, particularly, the influence of vacuum electron beam welding magnetic blowing is eliminated, and powerful technical support can be provided for follow-up variety development and stable production.

The invention discloses a gyrotron traveling wave tube low-speed scattered magnetic control injection electron gun and a design method, and belongs to the field of vacuum electronic devices. The electron gun comprises a cathode and an anode. The cathode comprises a cathode bottom table, a rear forming pole, an emission band and a front forming pole, the radius of the cathode bottom table is larger than that of the rear forming pole, the generatrix of the emission band is an arc curve, and the overall surface of the front forming pole is an arc surface; besides, in the design of the cathode, through two times of modeling and respective simulation optimization of partial parameters, the parameters in the one-time simulation optimization process are reduced, the optimization target is clearer, the design difficulty is effectively reduced, and the design time is shortened. The problem that the electric field of the gun area of the electron gun is too high due to the fact that the size of the cathode is too small is effectively solved, meanwhile, the adverse effect of the abrupt change structure of the cathode on the surface electric field of an emission band is avoided, and speed scattering of the electron gun is effectively reduced.

The invention relates to the technical field of chemical metallurgy, and discloses a preparation and purification method of high-purity sponge vanadium, which comprises the following steps: preparing a vertical vacuum reduction furnace, adding a reducing agent, discharging air in the furnace, and introducing shielding gas; heating, adding vanadium chloride for smelting, taking out, putting into a distillation furnace, and carrying out heating and heat preservation treatment; and finally, putting the product into a crucible in an electron beam furnace, vacuumizing, heating and smelting, introducing protective gas into the electron beam furnace after smelting, and cooling to room temperature to obtain a sponge vanadium product. The high-purity sponge vanadium is prepared by adopting a novel vanadium chloride metal thermal reduction-distillation method, and the sponge vanadium is further purified through vacuum electron beam refining, so that the common technical problems of long flow, low product purity and the like of a traditional method for preparing the high-purity metal vanadium are solved.

The invention discloses a preparation method for smelting a high-rhenium-molybdenum alloy pipe. The method comprises the following steps: 1, uniformly mixing Mo powder and Re powder, performing cold isostatic pressing, and sintering to obtain a high-rhenium-molybdenum alloy sintered blank; 2, carrying out vacuum electron beam smelting for many times to obtain a smelted high-rhenium molybdenum alloy cast ingot; 3, performing high-temperature extrusion combination and forging to obtain a smelted high-rhenium molybdenum alloy bar; 4, performing deep hole drilling, honing and machining treatment to obtain a smelted high-rhenium molybdenum alloy pipe blank; and 5, performing multi-pass high-temperature rolling, intermediate heat treatment, surface treatment and finished product heat treatment to obtain the smelted high-rhenium molybdenum alloy pipe. According to the method, repeated vacuum electron beam smelting is adopted, and repeated pressure machining such as high-temperature extrusion, forging and high-temperature rolling is combined, so that the purity and component uniformity of the smelted high-rhenium molybdenum alloy pipe are improved, the structure is uniform, the mechanical property is excellent, and higher dimensional precision and surface quality are obtained; the material is suitable for the fields of cladding pipes, heat pipes, medical implants and the like in nuclear reactors.

The invention belongs to the technical field of processing of nuclear reactor control rod neutron absorber materials, and particularly relates to a preparation method of a nuclear-grade hafnium cast ingot. The method comprises the following steps: preparing sponge hafnium into an electrode block; performing vacuum electron beam melting on the electrode block for at least two times to obtain a finished cast ingot; and processing the finished cast ingot to prepare the nuclear-grade hafnium cast ingot which can be used for processing the control rod profile for the nuclear reactor assembly. According to the preparation method of the nuclear-grade hafnium cast ingot, the tensile strength, the welding performance and the creep performance of a nuclear-grade hafnium profile can be effectively improved; meanwhile, the technological process is simplified, and the technological economy and the production efficiency are remarkably improved; in addition, sponge hafnium is directly adopted for vacuum electron beam melting, so that the cost of raw materials is greatly reduced. According to the method, the application performance of the nuclear-grade hafnium profile is improved, meanwhile, the process is simplified, the production efficiency is improved, the production cost is reduced, and the economical efficiency of nuclear-grade hafnium profile manufacturing is greatly improved.

SOLUTION: To joint vacuum electronic devices (VEDs) having a plurality of two-dimensional layers formed of different materials and create at least one VED at the same time, a two-dimensional material layer being mechanically processed to include features necessary for device operations to form features of a three-dimension when the two-dimensional material layer is assembled and is joined and becomes a three-dimensional structure and the two-dimensional layers being joined together to have a structure similar to a sandwich.EFFECT: This manufacturing step makes it possible to built in a metal material, a magnetic material, a ceramic material, and other materials which are necessary to manufacture a VED while maintaining a required positional accuracy and a large number of devices for a batch capacity.SELECTED DRAWING: Figure 1

The invention discloses a vacuum electron beam welding quality monitoring method and system based on molten pool monitoring, and relates to the technical field of vacuum electron beam welding quality monitoring.The method comprises the steps that a molten pool panoramic image, gas flow, electron beam parameters and molten pool dynamic parameters are collected in real time and stored in an electron beam welding time sequence database; monitoring the pollution degree of a camera window to obtain a window pollution rate wic, setting a window pollution threshold Twi, and when wic is less than Twi, directly calculating the stability of a first molten pool; when wic is greater than or equal to Twi, dynamically changing the gas flow, cleaning a camera window, then running a molten pool stability correction strategy, and further compensating the molten pool stability according to the window pollution rate and the vacuum degree to obtain corrected molten pool stability; surface abnormity is monitored through a molten pool image, a workpiece joint surface abnormity coefficient is obtained, and an electron beam welding quality score is obtained by combining molten pool stability. According to the method, the influence of molten pool stability calculation errors caused by the window cleaning process is solved.

The utility model discloses an electron track control device and a vacuum electron beam seal welding device, the electron track control device comprises N pairs of metal plates which are opposite pairwise, the middle point of the relative distance of each pair of metal plates is coaxial with the center line of an electron beam, and each pair of metal plates is provided with a uniform electric field; when an upper-layer welding seam is welded, applying a uniform electric field to counteract an upward deflection force generated by an electron beam under the influence of the magnetic field; when a lower-layer welding seam is welded, a downward deflection force generated by an electron beam under the influence of a magnetic field is counteracted by applying a reverse uniform electric field; according to the vacuum electron beam seal welding device, the welding precision of electron beams can be effectively improved, the seal welding quality of a titanium steel composite blank is guaranteed, and a continuous, uniform and large-fusion-depth seal welding joint is formed; and the problems of electron beam drifting, welding seam deflection, welding missing, low fusion depth and the like easily occurring in the current vacuum electron beam welding technology for the magnetic titanium steel composite blank are effectively solved.

The invention discloses a novel electronic gun for a cyclotron wave protector, and relates to the technical field of vacuum electronic devices. The electron gun comprises a cathode assembly, an anode assembly, a supporting assembly and a permanent magnet system. Wherein the cathode assembly adopts a planar cold cathode structure; the anode assembly comprises an anode main body and an electron beam channel in the anode main body; the cathode and the anode are fixedly connected through a supporting assembly; the permanent magnet system provides a uniform magnetic field. The cold cathode is adopted to replace a traditional hot cathode to generate high-quality strip-shaped electron beams, and the device has the advantages of being simple in structure, easy to integrate, rapid to start, long-acting, reliable, low in consumption and energy-saving.

The present invention belongs to the field of vacuum electronics, and discloses a structure for improving the output power of a microwave energy transmission window and a composite thin film metallization method. The method is to coat a composite film of a certain thickness on the microwave energy transmission window in two steps by magnetron sputtering coating. First, a mask is used to cover the middle area of ​​the dielectric window, and the edge is coated with composite film layers of different thicknesses by magnetron sputtering or electron beam evaporation. The composite film layer can realize vacuum welding of the window; then a mask is used to cover the edge, and a certain thickness of titanium nitride or silver oxide is plated in the central area of ​​the dielectric window by magnetron sputtering or electron beam evaporation. The titanium nitride or silver oxide in the central area can significantly reduce the plasma breakdown caused by high microwave power. The present invention is applicable to the field of vacuum electronics technology, and the method can improve the pressure resistance of the energy transmission window and significantly improve the power capacity of the energy transmission window.

A magnet array holder configured to hold a magnet piece and / or a non-magnet piece to form a magnet array, the magnet array configured to manipulate one or more electron beams in a vacuum electronic device when assembled, the magnet array holder comprising: a set of slots configured to receive the magnet piece and / or the non-magnet piece; a set of pockets for accommodating the magnetic and / or non-magnetic parts; and one or more attachment interfaces configured to couple the magnet array holder to the vacuum electronic device.

The present invention relates to the technical field of vacuum electronic devices, and provides an electron gun frame, comprising an insulating porcelain seat, a first anode seat and a second anode seat arranged on the insulating porcelain seat, and a positioning member for fixing the first anode seat and the second anode seat, wherein the insulating porcelain seat comprises an insulating porcelain ring, and at least two positioning block groups evenly distributed along the circumference of the top surface of the insulating porcelain ring, each positioning block group comprises a first positioning block, a second positioning block and a third positioning block, the first positioning block, the second positioning block and the third positioning block are arranged in sequence and equidistantly, the setting heights of the first positioning block, the second positioning block and the third positioning block are successively larger, and each of the first positioning block, the second positioning block and the third positioning block is fixedly connected to the first anode seat, the second anode seat and the positioning member respectively by a clamping method. The present invention solves the technical problem that the miniaturized traveling wave tube in the prior art cannot meet the requirements in terms of weight reduction, processing, assembly and precision.

The invention provides an ultrathin-wall niobium-tungsten alloy and titanium alloy dissimilar metal electron beam welding method which comprises the following steps: step 1, cleaning the to-be-welded parts of niobium-tungsten alloy and titanium alloy by using absolute ethyl alcohol, and then drying; step 2, assembling; the niobium-tungsten alloy and the titanium alloy part are in butt joint and fixed; 3, vacuum electron beam welding is used for positioned welding; and 4, formal welding is conducted. After welding, the surface of a welding seam is formed well, good metallurgical fusion is achieved, and the welding seam welded through a vacuum electron beam meets the QJ 20622-2016 I-level standard; under the room temperature condition, the tensile strength of the welding seam reaches 80% of that of titanium alloy base metal; a hydraulic strength test is carried out on a welding seam, and the welding seam is free of leakage and deformation when the pressure is maintained for 5 minutes under 4.1 MPa. An airtight test is carried out on a welding seam, the requirement that air leakage is avoided under the pressure of 3 MPa for 5 min is met, and the design structure size is promoted to continuously break through in the miniaturization and precision direction.

The invention discloses a forming method and structure of a complex-shape metal-based sweating and cooling control surface, relates to the technical field of thermal protection of hypersonic aircrafts, and is used for realizing connection of a front edge structure of a control surface and a main body structure of the control surface. A defocusing electron beam is adopted to preheat the welding part; after the preheating process is ready, an electromagnetic lens is adjusted to focus an electron beam to a welding area of the workpiece, it is ensured that energy of the electron beam can be concentrated on a welding point, and welding of a control plane front edge structure and a control plane main body structure is started; welding pores are eliminated using electron beam modification welding. A complex-shape metal-based sweating cooling control surface structure is manufactured by adopting a complex-shape metal-based sweating cooling control surface forming method, the complex-shape metal-based sweating cooling control surface structure is composed of a control surface front edge structure and a control surface main body structure, and the control surface front edge structure is provided with micro channels. According to the method, the welding connection is realized by adopting a process of combining electron beam defocusing preheating before welding, vacuum electron beam welding and electron beam modification welding, so that the permeability and the pressure-bearing performance of the control surface are ensured.

Vacuum electron devices (VEDs) having a plurality of two-dimensional layers of various materials are bonded together to form one or more VEDs simultaneously. The two-dimensional material layers are machined to include features needed for device operation so that when assembled and bonded into a three-dimensional structure, three-dimensional features are formed. The two-dimensional layers are bonded together into a sandwich-like structure. The manufacturing process enables incorporation of metallic, magnetic, ceramic materials, and other materials required for VED fabrication while maintaining required positional accuracy and multiple devices per batch capability.

The utility model relates to the technical field of vacuum electronics, in particular to a trapezoidal staggered gate slow-wave structure of a circular electron beam channel, which comprises a metal shell, trapezoidal upper metal gates and trapezoidal lower metal gates which are symmetrically arranged in a staggered manner are arranged in the metal shell, and the upper metal gates and the lower metal gates are respectively provided with arc-shaped concave holes; along the electron transmission direction, the concave holes respectively penetrate through the upper metal gate and the lower metal gate, and the upper and lower concave holes are enclosed to form a circular electron beam channel. Through the slow-wave structure, the bandwidth of the slow-wave structure can be increased, so that the longitudinal electric field in the slow-wave structure is enhanced.

A cathode heater assembly for use in a vacuum electronic device comprises a refractive cup having a bottom portion and side walls forming a container; a cathode secured in the container of the refractive cup; and a heater wire coupled to the refractive cup. The cathode heater assembly may be manufactured by providing a refractive cup having a bottom portion and side walls forming a container; inserting a cathode pellet in the container of the refractive cup; impregnating the cathode pellet with electron emissive materials while the cathode pellet is in the container of the refractive cup; and attaching a heater wire to the refractive cup.

A field emission (FE) cathode for a vacuum electronic device (VED) includes a graphite substrate or framework in the shape of a hollow cylinder, and at least one continuous carbon nanotube (CNT) fiber in tension or compression around at least a portion of the graphite substrate. The at least one continuous CNT fiber can include a filament, yarn, braided yarn, film, fabric, or combination thereof. The at least one continuous CNT fiber is secured to the electrically conductive substrate by vacuum brazing or any other suitable means.

This invention relates to a method for simultaneously producing single-sided and double-sided stainless steel composite plates, comprising steps such as billet preparation, billet processing, application of release agent, spot welding assembly of composite materials, surface treatment of the composite billet, alignment of the assembly, vacuum electron beam welding, defect repair welding, heating of the composite billet, and rolling of the composite billet. This invention, through vacuum welding and heated rolling of double-layer sandwich plates, enables the simultaneous production of both single-sided and double-sided stainless steel composite plates from a single set of composite billets. The rolled stainless steel composite plates exhibit satisfactory flaw detection results, with performance far exceeding user requirements. Furthermore, it allows for mass production and industrialization, providing strong technical support for the stable production of single-sided / double-sided stainless steel composite plates.

The utility model relates to the technical field of vacuum electronic tubes, in particular to a vacuum electronic tube accurate grinding device which comprises a base, a clamping assembly and an accurate grinding assembly are arranged at the top of the base, the clamping assembly comprises a U-shaped plate, a bidirectional lead screw is rotationally connected to the inner side of the U-shaped plate, and two moving blocks are connected to the bidirectional lead screw in a threaded mode. Connecting vertical plates are arranged at the bottoms of the two moving blocks, detachable arc-shaped clamping plates are arranged at the positions, close to the bottoms, of the opposite side faces of the two connecting vertical plates, and rubber linings are arranged on the concave faces of the arc-shaped clamping plates. According to the fine grinding device for the vacuum electronic tube, the clamping assembly is arranged, and the rubber lining is arranged on the arc-shaped clamping plate, so that stable clamping of the vacuum tube body in the grinding process is ensured, and the situation that the grinding precision is reduced due to displacement is avoided. And the concave surface of the rubber lining is tightly attached to the outer wall of the vacuum tube body, so that the friction force is increased, and the clamping stability is further improved.

The invention provides a wide-tuning high-power microwave signal generation device and method, and the device comprises a laser, an acousto-optic modulator, a signal generator, an electro-optic intensity modulator, an arbitrary waveform generator, an all-fiber amplifier, a Pockels box, a solid-state amplifier, a photoconductive semiconductor switch, and a bias voltage source. The acousto-optic modulator is respectively connected with the laser, the signal generator and the electro-optic intensity modulator, the electro-optic intensity modulator is respectively connected with the acousto-optic modulator, the arbitrary waveform generator and the all-fiber amplifier, and the Pockels box is respectively connected with the all-fiber amplifier and the solid-state amplifier. And the photoconductive semiconductor switch is respectively connected with the solid-state amplifier and the bias voltage source. The invention provides a wide-tuning high-power microwave signal generation device and method, which are used for solving the problems that the frequency of a microwave signal generated by an existing vacuum electronic device is difficult to change quickly and the size between the vacuum electronic devices is heavy.

This application provides a temperature control method and system for vacuum wetting indium in an array field emitter, relating to the field of vacuum electronic device manufacturing technology. The method includes: obtaining the three-dimensional temperature field distribution of the surface of the field emitter using a deep convolutional neural network based on spectral radiation energy; calculating the transverse and longitudinal temperature gradients between the emitter pins based on this distribution data, and inputting this data into an evaluation model to dynamically assess the wetting uniformity; and generating multi-temperature zone heating power control commands based on the uniformity results using a proportional-integral-derivative controller, and adjusting the power output of each temperature zone to ensure the array temperature field meets the requirements for promoting uniform indium wetting. This application improves the control accuracy and reliability of indium wetting uniformity in complex three-dimensional field emitters under vacuum and high-temperature conditions.

The invention belongs to the technical field of vacuum electronic devices, and particularly relates to a dynode with an edge expansion type inner substrate and an electron multiplier comprising the dynode. The dynode comprises a grid mesh assembly, a base frame box and an edge expansion type inner substrate, and the inner substrate is located in the base frame box. The lining bottom comprises an arc-shaped side wall part, an upper wall, a lower wall and a bent part; the bent parts are arranged between the arc-shaped side wall part and the upper wall and between the arc-shaped side wall and the lower wall; the base frame box comprises a side wall, and an upper baffle and a lower baffle which are connected with the side wall; the arc-shaped side wall part of the lining bottom is attached to the side wall of the base frame box, the upper wall of the lining bottom is tightly attached to the upper baffle of the base frame box, and the lower wall of the lining bottom is tightly attached to the lower baffle of the base frame box. The inner substrate structure enables the electric field in the dynode to change, and especially the electric field intensity at the corners in the dynode, namely the area where the bent part is located, is obviously changed. The problem of low dynode electron collection efficiency is solved, and the gain of the electron multiplier is improved.

1. The name of the design product: hollow cathode. 2. The use of the design product: electron emission device used in vacuum electronic equipment, suitable for ion source, plasma generating equipment and other scenes. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

Vacuum electron devices (VEDs) are produced having a plurality of two-dimensional layers of various materials that are bonded together to form one or more VEDs simultaneously. The two-dimensional material layers are machined to include features needed for device operation so that when assembled and bonded into a three-dimensional structure, three-dimensional features are formed. The two-dimensional layers are bonded together using brazing, diffusion bonding, assisted diffusion bonding, solid state bonding, cold welding, ultrasonic welding, and the like. The manufacturing process enables incorporation of metallic, magnetic, and ceramic materials required for VED fabrication while maintaining required positional accuracy and multiple devices per batch capability. The VEDs so produced include a combination of magnetic and electrostatic lenses for electron beam control.

The invention discloses a full-wave-band high-reflectivity metal composite film structure and a preparation method thereof, and relates to the technical field of semiconductor light-emitting elements. The metal composite film structure is applied to a light-emitting element, light enters from one side of an adhesion layer of the metal composite film structure, and the metal composite film structure at least comprises the adhesion layer with the thickness ranging from 0.5 nm to 2.5 nm; the composite reflecting layer is arranged on the adhesion layer, and the composite reflecting layer is of a stacked structure of a silver layer and an aluminum layer, or is a silver-aluminum alloy layer. The invention further discloses a preparation method of the structure, a vacuum electron beam evaporation process is adopted, when the composite reflecting layer is deposited, the evaporation rate is controlled to be 1-15 angstroms per second, and cavity heating at the temperature of 40-70 DEG C is supplemented. The invention preferably also comprises a double-layer protection structure consisting of atomic layer deposited aluminum oxide and chemical vapor deposited silicon dioxide. According to the invention, the problems of low reflectivity, narrow wave band, contradiction between adhesive force and reflectivity, high-cost sputtering process damage and the like of a traditional reflector are solved, and the advantages of full-wave band high reflectivity, high adhesive force, high reliability, low cost and low damage preparation are realized.

The invention discloses a method for preparing an internal tin method Nb3Sn superconducting material by using a sol-gel method, which comprises the following steps: preparing Nb / Sn gel by using the sol-gel method, and drying and pre-sintering the Nb / Sn gel to obtain Nb / Sn / O mixed powder; uniformly mixing the Nb / Sn / O mixed powder with Sn powder and Y powder to obtain Nb / Sn / O / Sn / Y mixed powder; loading the Nb / Sn / O / Sn / Y mixed powder into a barrier tube, and then loading the barrier tube into an oxygen-free copper tube to obtain a component; the components are densely arranged and loaded into an oxygen-free copper sheath, gaps are filled with oxygen-free copper rods in an inserted mode, and an Nb / Sn / O / Cu / Y composite ingot is obtained; and adding copper covers at the two ends of the Nb / Sn / O / Cu / Y composite ingot, and performing vacuum electron beam seal welding, extrusion and multi-pass drawing to obtain the Nb3Sn superconducting material. According to the prepared Nb3Sn superconducting material, the grain size of the Nb3Sn superconducting phase is smaller, and the structure is more stable.

The present invention discloses a method and structure for suppressing high-order mode oscillations in a multi-beam klystron. The present invention belongs to the technical field of vacuum electronic devices. The method proposed in the present invention adds a mode filter structure to the inner wall of the coaxial resonator of the multi-beam klystron. Its length is equal to half of the wavelength of the operating mode and is close to three-quarters of the wavelength of the high-order mode. Based on the principle of half-wavelength repeatability, this structure has the characteristic of having little influence on the frequency of the operating mode. Based on the principle of quarter-wavelength impedance transformation, this structure has the characteristic of having a greater influence on the high-order mode. By optimizing the design of the dimensions of the mode filter structure, it is possible to suppress spurious modes and eliminate the influence of high-order mode self-excited oscillations without affecting the frequency, field magnitude, and symmetry of the operating mode of the multi-beam klystron, providing technical support for the simulation design and engineering tube manufacturing of the multi-beam klystron.

The invention discloses an electron beam welding high-speed camera shielding device and a method for monitoring, regulating and controlling a molten pool by applying the same, and aims to solve the problems of equipment electronic component faults and the like caused by various interferences in a high-vacuum electron beam welding monitoring process of a high-speed camera. A shielding shell in the electron beam welding high-speed camera shielding device is in a through pipe shape, a tinned copper wire is wound on the outer wall of the shielding shell, the front end of the shielding shell is sealed through an observation platform, the rear end of the shielding shell is sealed through a rear panel, a sliding rail platform is arranged in the shielding shell, and a dragging platform is slidably connected to the upper surface of the sliding rail platform. The high-speed camera is fixed on the dragging table, an electric telescopic rod is fixed on the lower surface of the sliding rail table and connected with the dragging table through a support rod, and a liquid cooling plate is arranged in the shielding shell. The high-speed camera shielding equipment can provide a reliable monitoring environment for high-speed camera molten pool monitoring in the electron beam welding process, and meanwhile the welding technology can be regulated and controlled in real time based on monitoring images and parameters.