149 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.

The invention relates to a method for preparing a diffusion bonding layer on a nickel-based alloy and YSZ ceramic coating interface, and belongs to the technical field of metal material surface protection and ceramic coatings. According to the preparation method, a YSZ composite ceramic coating is deposited on the surface of the nickel-based alloy by adopting an electrophoretic deposition method, and then an MCr2O5 (M is Zr, Y, Ce, Yb and Al) diffusion bonding layer is prepared on the interface of the nickel-based alloy and the YSZ composite ceramic coating by adopting a pressureless discharge sintering and thermal diffusion treatment method. The bonding layer prepared through the diffusion method is good in interface bonding, the thermal stress between the nickel-based alloy and the YSZ ceramic coating is effectively buffered, the defects that a bonding layer prepared through a traditional method is large in pore impurity amount and the like can be overcome, and the bonding force between the ceramic coating and a base body and the high-temperature anti-oxidation and anti-stripping performance are remarkably improved.

The invention discloses a method for preparing a thin-wall part with a snakelike hollow channel by adopting superplastic forming / diffusion bonding. The method comprises the following specific steps: step 1, plate preparation and surface cleaning treatment; and step 2, solder resist coating: using a mask plate to deposit on a specific area of the plate and coating the solder resist according to an S-shaped shape, and removing the protective adhesive tape after spraying is completed. And 3, assembling and sealing, wherein the plates are stacked according to the design sequence, the edges are sealed and welded, and an air inlet / outlet is reserved to be connected with an air pipe. And 4, heating is conducted, specifically, the assembly is put into a mold, then the mold is uniformly put into a superplastic forming machine tool, and heating is conducted till the plate superplastic forming temperature is reached. And fifthly, diffusion bonding is conducted, specifically, uniform pressure is applied to the mold through a pressing head in the superplastic machine tool, so that diffusion bonding combination is conducted on the contact face, not coated with the solder resist, of the plate at high temperature and high pressure, and a connecting rib is formed. And 6, superplastic forming / diffusion bonding is conducted, specifically, the temperature is kept, and high-pressure inert gas is introduced into the assembly through a reserved air inlet according to an air pressure loading curve. And the plate coated with the solder resist is subjected to superplastic deformation and is attached to a mold cavity, diffusion connection between the plates is completed in the area not coated with the solder resist, and finally the needed thin-wall part with the serpentine channel cavity is formed. And 7, cooling and demolding are conducted, specifically, the thin-wall part with the snake-shaped hollow channel is taken out after cooling to the room temperature, and the residual solder resist is cleaned.

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.

This invention discloses a method and apparatus for fabricating complex hollow structures using pulsed DC and induction eddy current cyclic loading assisted diffusion bonding, relating to a method for assisted heating diffusion bonding. It achieves efficient and uniform heating of metallic materials. Step 1: Prepare a predetermined complex hollow metal structure to be diffuse bonded, polish and clean the surface of the complex hollow metal structure; Step 2: Place the complex hollow metal structure in a tooling mold for molding, and place the mold into a vacuum furnace; Step 3: Set up a dual-source control system; Step 4: Perform diffusion bonding under specified parameters, depressurize after the diffusion time is completed, and cool in the furnace until it reaches room temperature before removing the part. This invention combines pulsed DC heating and induction eddy current heating for diffusion bonding, improving diffusion efficiency while ensuring temperature uniformity, increasing the welding rate, and improving the quality of the diffusion joint.

The invention discloses a method for diffusion bonding of titanium alloy and stainless steel by using an intermediate layer, which is characterized in that a layer of Ta material and a layer of Ag material are sequentially arranged between a titanium alloy workpiece and a stainless steel workpiece as the intermediate layer, and diffusion welding is realized by heating and pressurizing. The method is applied to diffusion welding connection between Ti alloy and stainless steel, and the problems of brittle phase generation, residual stress concentration, insufficient connection strength and the like caused by large thermal expansion coefficient difference and high interface reaction activity of dissimilar materials can be effectively solved. And the connection residual stress can be better reduced, the connection strength is improved, and the joint interface quality and the overall mechanical property are improved.

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.

The application discloses a kind of profile pre-dispersion superplastic forming / diffusion connection method, belong to superplastic forming field.The present application solves the uneven wall thickness problem caused by excessive deformation of core plate when forming ultra-thin hollow multilayer structure by existing superplastic forming / diffusion connection method.The present application makes the core plate first undergo a large plastic deformation by the method of pre-expansion, releases the stress concentration in the material, then makes the protruding part undergo plastic deformation by positive expansion, because the core plate has undergone plastic deformation in the reverse expansion stage, the stress is more evenly distributed in the positive expansion stage, thereby avoiding the phenomenon of excessive deformation and thinning in local area, especially in high strain parts such as fillet, greatly improving the uniformity of wall thickness.The method provided by the present application includes the following steps:(1) core plate preforming and welding isolation rib;(2) panel forming;(3) core plate and panel combination;(4) core plate reverse expansion;(5) core plate 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.

The disclosed method of diffusion bonding of a lead zirconate titanate piezoelectric crystal to a metal wear plate, for the fabrication of an ultrasonic transducer operable at high temperatures and able to withstand repeated thermal cycling, comprises depositing noble metal coatings on both bonding surfaces, bringing the surfaces into contact, and heating under pressure at a temperature ranging from 270 to 400° C.

The invention discloses a diffusion welding method for an electrostatic chuck base and an insulating layer. The diffusion welding method comprises the following steps that (1) the base and the insulating layer are pretreated; (2) the three-layer composite brazing filler metal is subjected to laser cutting according to the size of a to-be-welded area; the cut three-layer composite brazing filler metal is subjected to ultrasonic cleaning, drying and vacuum sealing storage; (3) the base, the three layers of composite brazing filler metal and the insulating layer are stacked and assembled in sequence; (4) the assembly part is put into a vacuum diffusion welding furnace, vacuumizing is conducted till the pressure is smaller than or equal to 2 * 10 <-3 > Pa, the temperature is increased to 500-600 DEG C in a segmented mode, meanwhile, the axial pressure of 2-20 MPa is applied, and after pressure maintaining, the temperature is slowly reduced to the room temperature; and (5) carrying out nondestructive testing on the welding interface by adopting an X-CT and ultrasonic phased array detection system. The welding temperature can be reduced, so that the residual stress of a welding bonding interface can be reduced, the cracking risk in the using process of the electrostatic chuck is reduced, and the service life of the electrostatic chuck is prolonged; meanwhile, it is ensured that the bonding interface has high thermal conductivity, and the temperature uniformity of the wafer can be improved.

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.

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 belongs to the technical field of powder metallurgy, and relates to a stainless steel rotating part surface hard alloy layer and a diffusion bonding method and application thereof. The diffusion bonding method comprises the following steps: firstly, preparing CS3113 alloy powder; machining the stainless steel rotating part to form a surfacing groove; welding wires are melted and filled into the surfacing groove in a layered manner until the surfacing groove is fully stacked; then the stainless steel rotating part subjected to surfacing is machined till the shape of the stainless steel rotating part is the same as that of a target finished product; then designing and welding a sheath and detecting leakage, wherein the stainless steel rotating part is arranged in the sheath; and finally, the hard alloy layer on the surface of the stainless steel rotating part is prepared in the mode of powder filling, degassing and sealing welding, hot isostatic pressing, rough machining and sheath removing, heat treatment and finish machining. The prepared hard layer is uniform in structure and hardness, meanwhile, the prepared hard layer is high in bonding strength with a base material, has the characteristics of wear resistance, corrosion resistance and stable mechanical property, and can be used for preparing rotating parts in various shapes.

The application discloses a diffusion connection method for improving high-temperature strength of steel / copper dissimilar alloy joints, and aims at solving the problem of low high-temperature strength of the existing steel / copper dissimilar alloy diffusion connection joints.The diffusion connection method comprises the following steps: firstly, a plurality of grooves are formed on the welding surface of at least one of a steel alloy workpiece and a copper alloy workpiece, and titanium carbide particles are filled in the grooves; secondly, a friction stir head is used to perform friction stir surface treatment on the workpiece with the grooves filled with the titanium carbide particles; and thirdly, the welding surfaces of the two workpieces are abutted, a connection pressure is applied, and diffusion connection is carried out at a temperature of 500-950 DEG C in a vacuum diffusion furnace.The workpiece surface is subjected to the friction stir surface treatment, the fine-grained structure of the workpiece surface has more diffusion channels and lower atomic diffusion activation energy, and reliable joints can be obtained at a lower temperature; meanwhile, the distribution of the fine micron or nanometer titanium carbide particles in the structure has a thermal stability enhancement effect on the fine-grained structure, and the fine-grained structure has excellent high-temperature resistance.

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.