89 results about "Diffusion bonding" patented technology

The invention relates to the technical field of vacuum brazing, and discloses a vacuum brazing method for a needle array radiator, which comprises the following steps of: fusing reference process parameters of a historical process knowledge base and multi-dimensional characteristic parameters of the needle array radiator to obtain brazing process characteristic parameters; performing process strategy matching on the needle array radiator to confirm a vacuum brazing strategy of the needle array radiator; a vacuum brazing strategy is applied, and a vacuum brazing furnace is driven to execute stage process operation of preheating degassing, brazing filler metal melting and spreading, diffusion bonding and controllable cooling; performing situation analysis on the real-time process data flow of the stage process operation to obtain deviation data; dynamic parameter reconstruction is conducted on the target brazing stage of the needle array radiator, and temperature regulation and control parameters and process logic parameters are obtained; the needle array radiator is subjected to circulating brazing control, and a post-welding component of the needle array radiator is obtained; the efficiency of the vacuum brazing method for the needle array radiator can be improved.

The invention provides a preparation method of a micro-channel pipe structural member for a liquid cooling plate, and belongs to the technical field of liquid cooling plates. The invention discloses a preparation method of a micro-channel pipe structural member for a liquid cooling plate. The preparation method comprises the following steps: S1, preparing raw materials for forming the liquid cooling plate; s2, carrying out roll bending forming treatment on the upper wallboard raw material; s3, roll bending forming treatment is conducted on the lower wall plate raw material; s4, the micro-channel pipe raw material is subjected to roll bending forming treatment; s5, the upper wall plate structural part, the lower wall plate structural part and the micro-channel pipe structural part which are subjected to roll bending forming treatment are connected and fixed through brazing, and a final three-layer structural part is assembled; and S6, a cooling water nozzle is installed at the position of the micro-channel pipe structural part. According to the method, roll bending is conducted firstly, then welding is conducted, the method has the advantages of being efficient and rapid in forming, integrated forming can be achieved on complex profiles through the process, high-temperature diffusion bonding is avoided, and therefore the service life of the three-layer plate is greatly prolonged, and the mechanical property of formed components is greatly improved.

The invention discloses a Cu and secondary aluminum cast-rolling solid-liquid composite material and a preparation method thereof, and relates to the field of metal recycling, the Cu and secondary aluminum cast-rolling solid-liquid composite material comprises a Cu layer and a secondary aluminum layer, and the Cu layer and the secondary aluminum layer form metallurgical bonding at an interface through a cast-rolling process; a diffusion bonding layer with components changing in a gradient manner exists at the interface, the thickness of the diffusion bonding layer is 5-50 microns, and a continuous or discontinuous intermetallic compound layer is generated in the diffusion bonding layer; according to the Cu and secondary aluminum cast-rolling solid-liquid composite material and the preparation method thereof, through a pre-oxidation-cast-rolling composite technology, a compact Cu2O film is prepared on the surface of Cu in advance, and a controllable reduction-diffusion reaction occurs when the compact Cu2O film makes contact with a secondary aluminum melt; according to the process, an interface barrier is removed, and newly-generated active Cu atoms and Al atoms form a diffusion bonding layer with components changing in a gradient mode under rapid cooling and pressure of a casting roller.

A modular lead connector for a medical device is described. The modular lead connector comprises an alumina ring having opposed first and second faces provided with respective first and second metallizations. First and second gold washers are contacted to the respective first and second metallizations, and the ceramic ring supporting the first and second gold washers is positioned between first and second titanium contact rings. Then, with the ceramic ring and the titanium contact rings being in axial alignment, they are hermetically connected to each other at respective first and second titanium / gold / alumina diffusion bonds. A lead connector assembly comprising at least two modular lead connectors in axial alignment and welded together is also described. An open sleeve is connected to a proximal-most one of the axially aligned modular lead connectors, and a terminal plate is welded to a distal-most one of the axially aligned modular lead connectors.

The application provides a hollow part superplastic forming method with thickness steps, comprising the following steps: diffusion bonding multiple plates to form a superplastic forming blank, the superplastic forming blank has a hollow area for filling high-pressure gas and a solid area for realizing diffusion bonding, and the hollow area forms N thickness steps; and designing N superplastic forming molds corresponding to the N thickness steps according to a forming numerical model of the hollow part. The application designs and processes multiple superplastic forming molds on the basis of the forming numerical model of the hollow part, sequentially superplastic forms each thickness step from thick to thin through the multiple superplastic forming molds, makes each thickness step sequentially thin from thick to thin, reduces the thickness gradient difference between each thickness step, makes the thickness distribution of the finally superplastically formed hollow part more uniform, and improves the deformation coordination of different areas, and solves the problem of severe thinning of the thinner area generated by one-time superplastic forming.

This invention relates to a method for preparing a high-wear-resistant metal-based composite material. This method significantly improves the wear resistance of the material by combining nano-reinforcing particles, surface modification technology, and self-healing capabilities. Aluminum alloy or titanium alloy is selected as the matrix, and nano-sized silicon carbide or alumina particles are used as reinforcing materials. The reinforcing materials are uniformly dispersed using processes such as stir casting, forging, diffusion bonding, infiltration, or powder metallurgy. The composite material structure is then precisely formed using 3D printing technology. The surface of the composite material is treated with a nano-coating or plasma treatment to enhance its wear resistance and corrosion resistance. Furthermore, by embedding microcapsules containing a repair agent into the material, automatic repair of worn areas is achieved, improving the material's reliability and service life. This composite material is particularly suitable for mechanical engineering and automotive manufacturing, especially in the manufacture of automotive brakes under high-wear environments, demonstrating excellent performance and broad application prospects.

A sputtering target assembly comprises a tungsten containing sputtering target, a titanium containing backing plate attached to the tungsten containing sputtering target and an interlayer positioned between and diffusion bonding the tungsten containing sputtering target and the titanium containing backing plate. The interlayer includes a nickel layer immediately adjacent to the tungsten containing sputtering target and a copper layer immediately adjacent to the nickel layer.

The invention discloses a vacuum diffusion bonding method for low-alloy high-strength structural steel and Al-Mg series aluminum alloy, and aims to solve the problem of low joint strength caused by the fact that a brittle phase of a thick iron-aluminum intermetallic compound can be generated in a welding joint in an existing bonding method for the low-alloy high-strength structural steel and the Al-Mg series aluminum alloy. The diffusion bonding method comprises the following steps: 1, polishing the to-be-welded surfaces of the low-alloy high-strength structural steel and the Al-Mg series aluminum alloy; secondly, Fe, Co, Cr, Ni and Cu metal powder are subjected to ball milling and mixing, and intermediate layer foil is machined after smelting; thirdly, the low-alloy high-strength structural steel and the middle-layer foil form a to-be-welded accessory; 4, performing vacuum diffusion bonding; and fifthly, diffusion welding is conducted on the welded part and the Al-Mg series aluminum alloy. According to the method, the FeCoCrNiCu high-entropy alloy intermediate layer foil is used, an intermetallic compound layer with low brittleness is formed, cracks are prevented from being generated in the joint, and the maximum tensile strength can reach 95 MPa or above.

A kind of composite manufacturing method of blade leading edge titanium alloy reinforcing edge hot creep and diffusion connection, titanium alloy reinforcing edge upper and lower thin-walled prefabricated parts are respectively prepared by the way of cutting plate material, titanium alloy reinforcing edge middle layer block prefabricated part is prepared by the way of cutting titanium alloy block material;After being assembled, the upper thin-walled prefabricated part, the core mold, the middle layer block prefabricated part and the lower thin-walled prefabricated part are arranged between the upper and lower molds, and the prefabricated part is bent and attached to the mold by cold pressing, and the titanium alloy reinforcing edge is obtained by composite forming after die closing.The composite method of hot creep and diffusion connection after piece cold pressing is used to process leading edge reinforcing edge once, which can significantly improve the forming efficiency and material utilization rate, shorten the processing cycle, and at the same time, the size precision and forming quality of reinforcing edge can be well controlled.

The invention discloses a TiAl-based composite board preparation method based on vacuum diffusion bonding, and belongs to the technical field of layered composite board preparation. The preparation method comprises the following steps: firstly, pretreating a Ti alloy thin plate, laminating a TiAl alloy thin plate, a Ti2AlNb alloy thin plate and the pretreated Ti alloy thin plate according to a Ti-TiAl-Ti2AlNb sequence for vacuum diffusion bonding, then carrying out sheathing treatment on a composite plate, carrying out high-temperature rolling on the sheathed composite plate, and finally, removing the sheathing and carrying out stress relief annealing to obtain the TiAl-based composite plate. Metallurgical connection of the composite board is achieved through vacuum diffusion connection, then the composite board is prepared through high-temperature rolling, finally, residual stress is eliminated through annealing treatment, interface structures are regulated and controlled, good combination of three-layer board interfaces is achieved, and the composite board with excellent mechanical performance is obtained.

To provide a sealing structure of a sealed liquid and a pressure sensor which improve pressure resistance reliability at a high temperature.SOLUTION: The semiconductor device includes a device body 2 formed of Si, and a sealing part 4 which has an exposed surface 3 exposed continuously with an outer surface 2a of the device body 2, is formed of Au, Sn, and Si as main components, and is included inside the device body 2. And a sealing hole 5 which is formed inside the device body 2, extends from a sealed end 5a closed by the sealing part 4 to the opposite side of the exposed surface 3, and is filled with sealing liquid 6. The sealing portion 4 is joined to the device main body 2 by diffusion bonding and is integrated with the device main body 2.SELECTED DRAWING: Figure 1

The application relates to a non-thermal effect decoupling method for electric pulse assisted diffusion bonding, and a special graphite mold is designed, the mold is divided into left and right parts, ceramic sheets such as zirconia are used for insulation on the contact surface of the left mold and the sample, so that no current passes through the left sample in the bonding process, and the right sample is normally powered, and through optimization design of the structure and size of the sample, the heating environment and temperature history of the left and right samples in the diffusion bonding process are ensured to be consistent. After the bonding is completed, the left and right regions in the same diffusion bonding joint obtained are sampled respectively, and microscopic tests are carried out; through comparison of the interface bonding rate and shear strength, interface structure evolution, element diffusion behavior and the like of the sample with current passing through and the sample without current passing through under the same thermal history, the non-thermal effect decoupling and extraction are realized. Compared with the prior art, the application provides an effective way for revealing the physical nature and action mechanism of the electric pulse in the diffusion bonding.

This invention relates to a welding assembly device suitable for the automatic separation of multi-layer diffusion welding. It includes a welding fixture and an automatic lifting device. The welding fixture has positioning keys on both end faces and a stop block on its rear end face. The lifting system of the automatic lifting device includes a wire rope, a top plate, guide bars, and length-fixing screws. The wire rope is suspended from the upper end face of the top plate. Multiple guide bars are vertically distributed on the lower end face of the top plate, with adjacent guide bars connected by length-fixing screws. The positioning system of the automatic lifting device includes positioning pins and a flip-positioning block. The guide bars are positioned and installed using positioning pins and positioning keys. The flip-positioning block is rotatably installed on the crossbeam of the frame and cooperates with the stop block to achieve the positioning of the parts to be welded. The purpose of this welding assembly device for the automatic separation of multi-layer diffusion welding is to solve the problems of high strength and low efficiency in the handling methods of existing welding fixtures.

The application relates to a method for realizing low-temperature diffusion connection of metal materials through surface proton irradiation, and relates to the welding technical field.The application realizes the diffusion connection of Zr-4 alloy under the condition of low temperature of 600 DEG C to 800 DEG C by preparing an irradiation layer containing a large number of lattice defects and dislocations on the surface of a metal base material through a proton irradiation method, so that the element diffusion channel is obviously increased, the welding joint strength reaches 290 to 420 MPa, and the best can exceed 90% of the base material strength.The application can obtain a method for realizing low-temperature diffusion connection of metal materials through surface proton irradiation.

The application discloses a cylindrical dissimilar composite material diffusion welding device and method, which comprises a sealed shell, a vacuum assembly in communication with the sealed shell, a heating assembly arranged on the sealed shell, a centrifugal pressure assembly arranged in the sealed shell and rotationally matched with the inner wall of the sealed shell, and a transmission assembly connected with the sealed shell, wherein the power output end of the transmission assembly extends to the inside of the sealed shell through the side wall of the sealed shell and is in transmission connection with the centrifugal pressure assembly. Compared with the prior art, the application can overcome the shortcomings of uneven radial pressure distribution of the pipe material, deformation of the tubular structure caused by mechanical rigid extrusion, and difficulty in considering the high-temperature and high-vacuum operation environment of the complex mechanical pressure die, improve the diffusion bonding quality of the material interface, enhance the size precision of the pipe material forming, and improve the running stability of the welding device under an extreme heat field.

The invention relates to the technical field of extreme environment structural material preparation, in particular to a 9Cr-ODS steel high-reliability diffusion bonding method based on surface activation, which comprises the following steps: performing shot blasting treatment on a to-be-bonded surface of a 9Cr-ODS steel workpiece by adopting ultrasonic shot blasting equipment and taking steel shots as shots, so that an activated layer with high dislocation density is formed on the to-be-bonded surface; the activated to-be-connected surface is subjected to grinding, polishing and cleaning treatment; after being assembled, the treated workpiece is placed in a vacuum environment with the vacuum degree being 0.8 * 10 <-4 > Pa to 1 * 10 <-4 > Pa, the temperature is increased to 1050-1150 DEG C, the pressure of 10-30 MPa is applied to the direction perpendicular to the face to be connected, heat preservation is conducted for 30-60 min, then the pressure is removed, the temperature is reduced to the room temperature, and connection is completed; the problems that in a traditional ODS steel diffusion bonding process, diffusion bonding efficiency is low, and the reliability of a connector is insufficient are solved.

The invention discloses a titanium alloy hollow component separant coating template design method. The method comprises the steps that a diffusion connection area corresponding to a superplastic forming / diffusion connection mold profile of a titanium alloy hollow component is extracted; according to a transition region width value given by the design, extending the boundary of the diffusion connection region in an interpolating manner; the dispersed diffusion transition areas are connected in a curved-surface bridging mode and connected into a closed curved-surface whole in a joint mode; extracting a positioning hole in the superplastic forming / diffusion bonding die, externally inserting and extending to integrally intersect with the closed curved surface, and trimming to obtain a coating sample plate positioning hole; and the curved surface with the positioning holes is integrally unfolded into a two-dimensional plane view, and model design of the plane coating sample plate is completed after trimming. According to the method, the coating template is secondarily manufactured according to the offset of the coating area, so that the cost is low, the positioning matching degree with the blank is high, and the practical value is high; meanwhile, the coating sample plate is made of stainless steel plates, the manufacturing period is short, and the weight is light.

A bonding element suitable for diffusion bonding two components includes a sealing structure for locating between the two components; and a heating element connected to the sealing structure and configured to provide local heating to the sealing structure sufficient to cause the sealing structure to diffusion bond to each of the two components and provide a seal between them.

The present application belongs to the field of plastic forming of metal thin-walled components, and relates to a precise forming method of a thin-walled component with built-in reinforcing blocks. The present application cooperatively uses pre-forming and final forming processes, first performs hot forming to complete the manufacturing of preformed rib cells, and then performs SPF / DB process to complete the manufacturing of the final component. The existence of the pre-formed rib cells improves the stability of the reinforcing block fixation, improves the consistency of the welding rate and quality of the diffusion bonding between the reinforcing block and the skin, suppresses the final sagging and shrinkage defects of the component by controlling the protruding height size of the placed reinforcing block, and improves the overall forming quality of the component.

This invention provides a method for manufacturing a double-layer multi-directional cross-ribbed skin, belonging to the field of metal material processing technology. The method includes: Step 1, accurately unfolding the blank according to a three-dimensional model; Step 2, fabricating a core layer template; Step 4, precisely applying solder resist; Step 5, resistance spot welding, followed by argon arc welding to seal the periphery and weld the air inlet pipe, forming a sealed cavity; Step 6, performing diffusion bonding; Step 7, superplastic forming to create multi-directional cross-ribs; and finally, Step 8, removing excess material to obtain the finished product. The synergistic effect of these eight steps solves the problems of long machining cycles, low efficiency, low material utilization, long time required for critical equipment such as five-axis gantry machining centers, easy deformation during thin-walled part processing, and difficulty in controlling deformation during multiple machining operations. This invention realizes the manufacturing of a double-layer multi-directional cross-ribbed skin for aluminum-lithium alloys.

The invention provides a method for ceramic-steel efficient diffusion bonding and synchronous preparation of metal-based ceramic, and belongs to the technical field of welding. The method comprises the following steps that Al powder, Ti powder and B2O3 powder are mixed and then subjected to ball milling, and intermediate layer powder is obtained; mixing ceramic powder, a binder and an active component, and performing secondary ball milling to obtain a metal-based ceramic precursor; and sequentially assembling a base material, the intermediate powder and the metal-based ceramic precursor from bottom to top into a layered structure to obtain an assembly, and sequentially carrying out cold pressing pretreatment, hot pressing diffusion bonding and cooling on the assembly to obtain the metal-based ceramic. Smooth transition of thermal expansion coefficients is achieved through the middle transition layer, residual stress caused by mismatching of the thermal expansion coefficients of ceramic and steel is effectively restrained in cooperation with an optimized control cooling system, and long-term service reliability of the connector under the thermal cycle condition is guaranteed.

This invention discloses a high-temperature titanium alloy phase change superplastic diffusion bonding method, belonging to the field of material welding technology. The bonding method is as follows: the surface of the high-temperature titanium alloy sample to be welded is pretreated and chemically etched sequentially, followed by magnetron co-sputtering to sputter a layer of iron-nickel composite film onto the surface, obtaining an intermediate sample. The intermediate sample is then annealed to obtain a sample to be welded with the iron-nickel composite film layer; the iron-nickel composite film accounts for 0.55%~0.80% of the mass of the high-temperature titanium alloy sample; the mass ratio of iron to nickel in the iron-nickel composite film is (70:30)~(90:10); the sample to be welded with the iron-nickel composite film layer is then welded through multiple cycles of heating and cooling within a preset temperature range using a phase change superplastic diffusion process. This phase change superplastic diffusion bonding method solves the technical problems of low efficiency and unstable mechanical properties of welds in traditional isothermal diffusion welding.

This invention discloses a diffusion bonding method for high-entropy carbide ceramics with a high Nb content alloyed interlayer. The method involves stacking Ni foil-Nb foil-Ni foil sequentially to form a composite interlayer, where the Nb atom content is 65-85 at.%. The composite interlayer is placed between the welding surfaces of two high-entropy carbide ceramic blocks, and pre-pressure and diffusion bonding pressure are applied simultaneously to diffusely bond the two blocks. The bonding is then maintained at a diffusion bonding temperature of 1200-1250°C for 30-90 minutes to form a high-entropy carbide ceramic joint. A high-Nb content transition layer is formed by in-situ alloying the Nb layer with a small amount of Ni atoms. This high-Nb content transition layer contacts the high-entropy carbide ceramic and bonds at the interface through atomic diffusion. This effectively reduces the diffusion bonding temperature between the refractory metal interlayer and the high-entropy carbide ceramic. The resulting joint exhibits good mechanical properties at both room temperature and high temperature and maintains interface structural stability under extreme corrosive environments.

The invention belongs to the field of blade machining detection, and discloses a hollow blade machining surface quality detection method and related device.The method comprises the steps that the blade basin morphology, the blade back morphology and the cavity morphology obtained based on a three-dimensional optical detection method are obtained; generating a surface profile tolerance detection result, a positioning reliability detection result and a cavity size detection result of the diffusion junction surface of the blade basin and the blade back according to the morphology and the theoretical model; regional out-of-tolerance is effectively avoided through surface profile tolerance detection, and the machining quality of a connecting surface and a reinforcing rib area is guaranteed. Through positioning reliability and cavity size detection, it is ensured that the blade basin and the blade back do not shift in diffusion connection. And meanwhile, the morphology of the defect area and the morphology of the surface roughness detection area of the diffusion bonding surface obtained based on the white light confocal detection method are obtained, and a defect size and surface roughness detection result is generated, so that the surface quality of the diffusion bonding surface is controlled, and the phenomenon of cracking after welding is avoided.

This invention relates to the field of alloy materials technology and discloses a multilayer composite thermal diffusion bonding method for refractory high-entropy alloys and high-temperature alloys. The invention involves setting a multilayer composite intermediate layer between the refractory high-entropy alloy and the high-temperature alloy, forming a stacked structure of refractory high-entropy alloy / Mo / Ni / high-temperature alloy. Under vacuum conditions, a stepped heating to 1300-1500℃ is employed with segmented holding. The compatibility of the BCC structure of the refractory high-entropy alloy is utilized to form a gradient diffusion layer, and a solid solution transition layer is formed at the Ni interface to suppress the formation of brittle phases. Simultaneously, the retarded diffusion effect of the refractory high-entropy alloy itself limits excessive diffusion of Ni atoms. After holding, gradient cooling and graded aging treatments are performed to obtain a compositional gradient metallurgical transition interface from the refractory high-entropy alloy to the high-temperature alloy. The joint of this invention exhibits a room temperature shear strength exceeding 500 MPa, with ductile fracture as the fracture mode, effectively solving the problem of reliable bonding between refractory high-entropy alloys and high-temperature alloys, and is suitable for the manufacture of ultra-high temperature hot-end components.

One aspect of the present invention is to provide a stainless steel material having excellent diffusion bonding properties and a method for manufacturing same. In addition, another aspect of the present invention is to provide a method for diffusion bonding of the steel material capable of securing high strength and excellent low-temperature impact toughness.

The invention discloses a TiAl alloy low-temperature diffusion bonding method based on the synergistic effect of hydrogenation treatment and a Zr intermediate layer, and aims to solve the technical problems that traditional TiAl alloy diffusion bonding is high in temperature and insufficient in joint strength. According to the method, a certain content of hydrogen element is introduced to the surface of the TiAl alloy through a hydrogenation treatment technology, meanwhile, Zr foil serves as a middle layer, and low-temperature efficient connection of the TiAl alloy is achieved through the synergistic effect of the hydrogen element and the Zr foil, specifically, hydrogenation treatment induces the TiAl alloy to generate a beta phase, the hardness of base metal is reduced, and the atomic diffusion rate is increased; the Zr intermediate layer and the Ti element in the TiAl alloy form a continuous solid solution, atomic diffusion is further accelerated, and the interface structure is optimized. And compared with a traditional process, the connection temperature is greatly reduced, and the method is suitable for batch manufacturing of TiAl alloy complex components. The method is suitable for manufacturing lightweight high-temperature-resistant components such as aircraft airfoils and engine hot ends. The method is suitable for manufacturing lightweight high-temperature-resistant components such as aircraft airfoils and engine hot ends.

The application relates to the field of electronic atomization technology and discloses a bimetallic composite bidirectional adaptive electronic atomization heating mesh and a preparation method thereof, which comprises an iron-chromium-aluminum alloy layer and a 316L stainless steel layer, and a diffusion bonding interface is formed between the two layers through metallurgical bonding; the preparation method comprises the following steps: surface pretreatment is conducted on two metal strip materials, heating and hot rolling compounding are conducted under controllable protective atmosphere, net type forming treatment is conducted, and stress relief annealing treatment is conducted. The iron-chromium-aluminum alloy layer with high resistivity and the 316L stainless steel layer with stable positive resistance temperature coefficient are metallurgically compounded, so that the obtained heating mesh has the functions of stable heating and temperature sensing. The controllable atmosphere hot rolling in the preparation method guarantees firm interlayer bonding, the photolithography and chemical etching process are combined with the stress relief annealing treatment, the high consistency and stability of the final mesh structure are guaranteed, and the problems of poor temperature control, short service life and inconsistent performance of existing heating elements are solved.

The application discloses a kind of by dynamic phase coupling electromagnetic field device auxiliary vacuum diffusion welding method, belong to metal material solid-phase welding technical field.The method aims at solving the problems, such as grain coarsening, joint performance decline and heterogeneous material welding uneven caused by high temperature and long time heating in traditional diffusion welding process.The core scheme includes: (1) surface treatment, clamping positioning and vacuum pretreatment are carried out to the workpiece to be welded;(2) double-band nested induction coil structure is used, and pulse current module is loaded cooperatively, three-module electromagnetic field is realized by FPGA chip dynamic phase coupling, and periodic oscillation electromagnetic pressure field is formed;(3) based on convolution neural network model, parameters are real-time regulated during welding process, and interface diffusion behavior is optimized.The application realizes deep cooperation of pulse joule heat and induction eddy current heat through dynamic phase coupling mechanism, significantly reduces welding temperature and shortens welding time, is especially suitable for high-quality connection of copper alloy, molybdenum alloy and other heterogeneous materials, the joint tensile strength is improved, and the structure is uniform, corrosion resistance is excellent.

This invention discloses a method for enhancing thermoforming diffusion welding capability using electric field energy. This method, based on the thermoforming diffusion welding temperature, pressure, time, and atmospheric conditions, applies a pulsed current to the diffusion surface in a quasi-perpendicular manner. It fully utilizes the electron migration effect to excite the activity of metal atoms, increasing the energy potential of metal atoms across the welding surface, thereby effectively enhancing the thermoforming diffusion welding capability. This method provides a novel technical means for thermoforming diffusion welding under existing technological conditions.