CN113042844A - Vacuum-ultrasonic composite brazing device and method - Google Patents
Vacuum-ultrasonic composite brazing device and method Download PDFInfo
- Publication number
- CN113042844A CN113042844A CN202110446700.3A CN202110446700A CN113042844A CN 113042844 A CN113042844 A CN 113042844A CN 202110446700 A CN202110446700 A CN 202110446700A CN 113042844 A CN113042844 A CN 113042844A
- Authority
- CN
- China
- Prior art keywords
- vacuum
- ultrasonic
- axis
- welding
- axis guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/06—Soldering, e.g. brazing, or unsoldering making use of vibrations, e.g. supersonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
- B23K1/206—Cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/04—Heating appliances
- B23K3/047—Heating appliances electric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/085—Cooling, heat sink or heat shielding means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention provides a vacuum-ultrasonic composite brazing device which comprises a vacuum cover for placing a workpiece to be brazed and a moving unit arranged in the vacuum cover, wherein a pressure sensing unit is fixed on the moving unit, an ultrasonic brazing instrument is fixed below the pressure sensing unit, and the moving unit can drive the pressure sensing unit to move in the vertical direction and in a plane vertical to the vertical direction. The invention has the advantages that: the micro-strip plate on the microwave assembly is efficiently, reliably and inexpensively connected by utilizing the ultrasonic degassing effect and the vacuum negative pressure, the moving unit can move in three directions in the whole space to adjust the welding position, the degree of freedom is higher, and the requirements of large welding surface, multiple positions, discontinuous welding and the like can be met; meanwhile, the ultrasonic brazing instrument applies load through the pressure sensing unit, the pressure obtained by the ultrasonic brazing instrument can be accurately controlled, the control precision is high, and the high-precision welding requirement of the electronic component is met.
Description
Technical Field
The invention relates to the technical field of brazing, in particular to a vacuum-ultrasonic composite brazing device and method.
Background
With the increasing demand of modern electronic equipment for miniaturization, light weight and high integration, the microstrip board is widely applied to the high-integration assembly occasions of microwave electronic functional components in aerospace products due to small volume and light weight. In the existing assembly technology of the microstrip plate and the metal shell, screw connection and conductive adhesive bonding are common connection modes, but the two connection modes cannot meet the high index requirements of aerospace products in the aspects of weight, electric signal transmission and long-term reliability. Therefore, brazing is often used to achieve large-area grounding connection between the microstrip plate and the aluminum alloy surface. The existing brazing methods include hot stage welding, low temperature vacuum brazing and vacuum vapor phase welding. In the three methods, a proper amount of soldering flux is used in the welding operation process, but the melted soldering flux can volatilize gas, so that holes are easy to form, and the microwave transmission performance is reduced.
Ultrasonic technology has wide application in low temperature brazing connection of aluminum alloy. Under the combined action of ultrasonic cavitation, air suction effect and acoustic flow effect, the ultrasonic wave can promote the liquid solder to break an oxide film to realize the fluxless connection of the micro-strip plate and the aluminum alloy; on the other hand, the gas dissolved in the liquid solder can be quickly precipitated into macroscopic pores and discharged out of the brazing seams, so that the penetration rate of the brazing joint is improved. However, the viscosity of the liquid phase solder is high in the low-temperature brazing process, the fluidity of the macroscopic pores is poor, and the discharging of the macroscopic pores by using the acoustic flow effect of the ultrasonic wave requires a long ultrasonic vibration time, so that the welding efficiency is reduced, and the damage of the microstrip plate is also caused; in addition, the gas-liquid interface reaction on the surface of the brazing filler metal is violent during ultrasonic brazing, and the phenomenon of oxidation and blackening is easily formed. Therefore, the realization of high-quality welding of large-size microstrip plates by simply relying on ultrasonic brazing still has certain limitations.
The patent application with publication number CN103394783A discloses an ultrasonic-assisted vacuum brazing apparatus, which realizes ultrasonic-assisted brazing of objects in a vacuum chamber by arranging an ultrasonic vibration rod in the vacuum chamber and controlling the position of the ultrasonic vibration rod by means of a lead screw guide rail upright post. The pressure load of the scheme is applied through a guide rod penetrating through a vacuum cavity, is limited by the friction force between the vacuum cavity and the guide rod, and is difficult to apply high-precision micro load to a workpiece, so that the equipment is not suitable for the brazing connection of thin-wall and high-precision electronic components.
Disclosure of Invention
The invention aims to provide a high-precision brazing device and a welding method suitable for a thin-wall electronic component.
The invention solves the technical problems through the following technical scheme: the vacuum-ultrasonic composite brazing device comprises a vacuum cover for placing a workpiece to be welded and a moving unit arranged in the vacuum cover, wherein a pressure sensing unit is fixed on the moving unit, an ultrasonic brazing instrument is fixed below the pressure sensing unit, and the moving unit can drive the pressure sensing unit to move in the vertical direction and the plane perpendicular to the vertical direction.
According to the invention, ultrasonic degassing effect and vacuum negative pressure are utilized, high-penetration rate and high-strength brazing welding is efficiently completed under the working condition that no soldering flux is used, high-efficiency, high-reliability and low-cost connection of a micro-strip plate on a microwave assembly is realized, a moving unit can move in three directions in the whole space to adjust the welding position, the degree of freedom is higher, and the requirements of large welding surface, multiple positions, discontinuous welding and the like can be met; meanwhile, the ultrasonic brazing instrument applies load through the pressure sensing unit, the pressure obtained by the ultrasonic brazing instrument can be accurately controlled, the control precision is high, and the high-precision welding requirement of the electronic component is met.
Preferably, a temperature-equalizing flat heater is arranged at the bottom of the vacuum cover, the workpiece is placed on the temperature-equalizing flat heater, and the temperature-equalizing flat heater can heat the workpiece.
Preferably, the temperature-equalizing flat heater comprises a heat insulation plate directly contacted with the bottom of the vacuum cover, a heating plate is fixed on the heat insulation plate, the workpiece is placed on the heating plate, and a temperature sensor is further arranged on the heating plate.
Preferably, a cooling module is further arranged between the heat insulation plate and the heating plate, the cooling module is of a cavity structure, and a cooling tank for storing cooling media is connected to the cooling module through a pipeline.
Preferably, the pressure sensing unit comprises a pressure loader connected with the moving unit and a pressure sensor connected with the pressure loader, the pressure loader is connected with the ultrasonic brazing instrument, and the pressure sensor acquires a pressure value loaded by the pressure loader.
Preferably, the ultrasonic brazing instrument comprises a transducer connected with the pressure sensing unit and an ultrasonic welding rod connected with the transducer, and the ultrasonic welding rod faces towards the workpiece.
Preferably, the motion unit comprises an x-axis motion assembly, a y-axis motion assembly and a z-axis motion assembly;
the z-axis motion assembly comprises a z-axis guide rod, a z-axis guide rail and a z-axis driving part, the z-axis guide rod is in sliding fit with the z-axis guide rail along the vertical direction under the action of the z-axis driving part, and the pressure sensing unit is fixed on the z-axis guide rod;
the y-axis motion assembly comprises a y-axis sliding block fixedly connected with the z-axis guide rail, a y-axis guide rail in sliding connection with the y-axis sliding block, and a y-axis motion part for driving the y-axis sliding block to move on the y-axis guide rail, and the y-axis guide rail is arranged along the horizontal direction;
the x-axis movement assembly comprises two x-axis sliding blocks fixedly connected with two sides of the y-axis guide rail respectively, two x-axis guide rails in sliding fit with the x-axis sliding blocks on the two sides respectively, and an x-axis driving portion for driving the x-axis sliding blocks to slide along the x-axis guide rails, and the x-axis guide rails are perpendicular to the z-axis guide rails and the y-axis guide rails.
Preferably, the vacuum hood is further provided with an air port connected with a vacuum pump.
Preferably, still include the switch board, the switch board respectively with ultrasonic brazing appearance, pressure sensing unit, motion unit, hot plate, cooling module communication connection.
The invention also provides a brazing method by using the vacuum-ultrasonic composite brazing device, which comprises the following steps
S1: polishing and removing an oxide film and grease on the surface of a workpiece to be welded, cutting soldering lugs according to the shape and the size of a welding surface, and respectively placing the soldering lugs in absolute ethyl alcohol for ultrasonic cleaning;
s2: placing a soldering lug between the connecting surfaces of two workpieces to be welded, placing the soldering lug into a vacuum cover, and sealing the vacuum cover;
s3: vacuumizing the vacuum cover to less than or equal to 1 multiplied by 10-2MPa；
S4: adjusting the position of a welding point by using a motion unit, and setting a welding path and ultrasonic welding parameters;
s5: heating the workpiece to a specified temperature, starting equipment, and welding according to a preset path and parameters;
s6: and after welding, cooling the workpiece, filling protective gas into the vacuum cavity when the temperature of the vacuum cavity is reduced to be lower than the preset temperature, and taking out the welded workpiece when the air pressure is recovered to be basically consistent with the atmospheric pressure.
The vacuum-ultrasonic composite brazing device and the method provided by the invention have the advantages that: the ultrasonic degassing effect and the vacuum negative pressure are utilized, high-penetration rate and high-strength brazing welding is efficiently completed under the working condition that no scaling powder is used, efficient, high-reliability and low-cost connection of a micro-strip plate on a microwave assembly is realized, a moving unit can move in three directions in the whole space to adjust the welding position, the degree of freedom is higher, and the requirements of large welding surface, multiple positions, discontinuous welding and the like can be met; meanwhile, the ultrasonic brazing instrument applies load through the pressure sensing unit, the pressure obtained by the ultrasonic brazing instrument can be accurately controlled, the control precision is high, and the high-precision welding requirement of the electronic component is met. The welding line is protected by vacuum or inert gas, oxidation during welding is prevented, and the quality of the joint is improved.
Drawings
FIG. 1 is a schematic view of a vacuum-ultrasonic hybrid brazing apparatus provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of the interior of a vacuum enclosure of a vacuum-ultrasonic hybrid brazing apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a motion unit of a vacuum-ultrasonic hybrid brazing apparatus provided in an embodiment of the present invention;
fig. 4 is a metallographic image of a weld joint obtained by using the vacuum-ultrasonic composite brazing method provided by the embodiment of the invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described below in detail and completely with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, the present embodiment provides a vacuum-ultrasonic composite brazing device, which includes a vacuum hood 1 for placing a workpiece to be welded, and further includes a moving unit 2 disposed in the vacuum hood 1, a pressure sensing unit 3 is fixed on the moving unit 2, an ultrasonic brazing instrument 4 is fixed below the pressure sensing unit 3, the moving unit 2 can drive the pressure sensing unit 3 to move in a vertical direction and a plane perpendicular to the vertical direction, and the ultrasonic brazing instrument 4 moves along with the pressure sensing unit 3 to achieve the purpose of welding targets at different positions.
In the embodiment, the ultrasonic degassing effect and the vacuum negative pressure are utilized, high-penetration-rate and high-strength brazing welding is efficiently completed under the working condition that no scaling powder is used, high-efficiency, high-reliability and low-cost connection of the micro-strip plate on the microwave assembly is realized, the moving unit 2 can move in three directions in the whole space to adjust the welding position, the degree of freedom is higher, and the requirements of large welding surface, multiple positions, discontinuous welding and the like can be met; meanwhile, the ultrasonic brazing instrument 4 applies load through the pressure sensing unit 3, the pressure obtained by the ultrasonic brazing instrument 4 can be accurately controlled, the control precision is high, and the high-precision welding requirement of the electronic component is met.
Further, with reference to fig. 2 and 3, a uniform temperature flat heater 5 is further disposed at the bottom of the vacuum enclosure 1, the workpiece 6 is placed on the uniform temperature flat heater 5, and the workpiece 6 is heated by the uniform temperature flat heater 5 to be within a temperature range required by welding. Specifically, the even temperature flat heater 5 includes the heat insulating board 51 with 1 bottom direct contact in vacuum cover to protect the vacuum cover, be fixed with hot plate 52 on the heat insulating board 51, be provided with temperature sensor on the hot plate 52, work piece 6 is placed on hot plate 52, through the temperature on temperature sensor monitoring hot plate 52 surface, after heating suitable temperature, the stop heating can. In order to rapidly cool the workpiece 6 and the vacuum hood 1, a cooling module 53 is further arranged between the heat insulation plate 51 and the heating plate 52, the cooling module 53 is of a cavity structure, a cooling groove 54 for storing a cooling medium is connected with the cooling module through a pipeline, when cooling is needed, the cooling medium in the cooling groove 54 is conveyed into the cooling module 53, and the heating plate 52 is cooled, so that the workpiece 6 is rapidly cooled.
The ultrasonic brazing apparatus 4 comprises a transducer 41 connected to the pressure loader 31 and an ultrasonic horn 42 connected to the transducer 41, the ultrasonic horn 42 being disposed towards the workpiece 6.
Referring to fig. 3, the moving unit 2 includes an x-axis moving assembly, a y-axis moving assembly, and a z-axis moving assembly, specifically, the z-axis moving assembly includes a z-axis guide rod 21, a z-axis guide rail 22, and a z-axis driving part (not shown), the z-axis guide rod 21 is in sliding fit with the z-axis guide rail 22 along a vertical direction under the action of the z-axis driving part, and the pressure sensing unit 3 is fixed on the z-axis guide rod 21;
the y-axis movement assembly comprises a y-axis sliding block 23 fixedly connected with the z-axis guide rail 22, a y-axis guide rail 24 in sliding connection with the y-axis sliding block 23, and a y-axis movement part (not shown) for driving the y-axis sliding block to move on the y-axis guide rail, wherein the y-axis guide rail 24 is arranged along the horizontal direction;
the x-axis movement assembly comprises two x-axis sliders 25 fixedly connected with two sides of the y-axis guide rail 24 respectively, two x-axis guide rails 26 in sliding fit with the x-axis sliders 25 on the two sides respectively, and an x-axis driving part (not shown) for driving the x-axis sliders 25 to slide along the x-axis guide rails 26, wherein the x-axis guide rails 26 are perpendicular to the z-axis guide rails 22 and the y-axis guide rails 24, so that the ultrasonic brazing apparatus 4 can move in the whole space.
The x-axis driving part, the y-axis driving part and the z-axis driving part all adopt driving mechanisms in the prior art, meanwhile, a z-axis guide rod 21, a z-axis guide rail 22, a y-axis sliding block 23, a y-axis guide rail 24, a z-axis sliding block 25 and a z-axis guide rail 26 are respectively designed in an adaptive mode according to the structures of the driving mechanisms to be matched, and meanwhile, a plurality of drag chains 27 are further arranged on the moving unit 2 to keep communication connection and electric connection of all parts in the position adjusting process.
With reference to fig. 1 and 2, the vacuum hood 1 is further provided with a gas port 12 connected with a vacuum pump 11, the vacuum degree in the vacuum hood 1 can be adjusted by the vacuum pump 11, meanwhile, the gas port 12 is further communicated with the external environment to recover the pressure in the vacuum hood 1, the gas port 12 is preferably communicated with a storage device of inert gas, and a vacuum or inert atmosphere protective environment is provided for the ultrasonic brazing workpiece through an inert gas protection welding area, so that oxidation during welding is prevented, and the joint quality is improved.
Referring to fig. 1, the brazing device further includes a control cabinet 7, each part is controlled by the control cabinet 7 to perform coordination work, working conditions such as welding parameters are conveniently adjusted, and the control cabinet 7 is in communication connection with the ultrasonic brazing instrument 4, the pressure sensing unit 3, the moving unit 2, the heating plate 52, the cooling module 53, the vacuum pump 11 and the like.
Example 2
The present example also provides a method of brazing using the vacuum-ultrasonic brazing apparatus provided in example 1, comprising the steps of:
s1: polishing and removing an oxide film and grease on the surface of a workpiece to be welded, cutting soldering lugs according to the shape and the size of a welding surface, and respectively placing the soldering lugs in absolute ethyl alcohol for ultrasonic cleaning;
s2: placing a soldering lug between the connecting surfaces of two workpieces to be welded, placing the soldering lug into a vacuum cover, and sealing the vacuum cover;
s3: vacuumizing the vacuum cover to less than or equal to 1 multiplied by 10-2MPa；
S4: adjusting the position of a welding point by using a motion unit, and setting a welding path and ultrasonic welding parameters;
s5: heating the workpiece to a specified temperature, starting equipment, and welding according to a preset path and parameters;
s6: and after welding, cooling the workpiece, filling protective gas into the vacuum cavity when the temperature of the vacuum cavity is reduced to be lower than the preset temperature, and taking out the welded workpiece when the air pressure is recovered to be basically consistent with the atmospheric pressure.
Specifically, in this embodiment, a welding method is described by taking a foamed Ni-reinforced Ni/Sn composite soldering lug to weld a micro-strip plate and 7075 aluminum alloy as an example, and the steps are as follows;
s1: polishing and removing an oxide film and grease on the surface of a workpiece to be welded, cutting soldering lugs according to the shape and the size of a welding surface, and respectively placing the soldering lugs in absolute ethyl alcohol for ultrasonic cleaning;
firstly, grinding the surface of 7075 aluminum alloy by using 100#, 200#, 400# water abrasive sand paper to remove surface oxide films, grease and the like, then placing the 7075 aluminum alloy into absolute ethyl alcohol for ultrasonic cleaning for 5min, taking out, and drying the surface for later use; meanwhile, cutting the Ni/Sn composite soldering lug according to the shape and the size of the welding surface of the microstrip board, placing the welding lug in absolute ethyl alcohol for ultrasonic cleaning for 3-5min, taking out the welding lug, and drying the surface for later use;
s2: placing a soldering lug between the connecting surfaces of two workpieces to be welded, placing the soldering lug into a vacuum cover, and sealing the vacuum cover;
clamping and placing the Ni/Sn composite soldering lug on an aluminum alloy plate and a micro-strip plate for quality inspection, placing the aluminum alloy plate and the micro-strip plate on a heating plate in a vacuum cover for fixing, and closing a cabin door of the vacuum cover;
s3: vacuumizing the vacuum cover to less than or equal to 1 multiplied by 10-2MPa；
S4: adjusting the position of a welding point by using a motion unit, and setting a welding path and ultrasonic welding parameters;
according to the size and the position of a workpiece, the position of a welding point is manually or automatically adjusted, a welding path and ultrasonic welding parameters are set, in the embodiment, the ultrasonic vibration power is 500W, the frequency is 20kHz, the ultrasonic vibration time is 70-90s, the temperature is kept for 30-50 s after welding, and the welding temperature is 300-320 ℃.
S5: heating the workpiece to a specified temperature, starting equipment, and welding according to a preset path and parameters;
s6: and after welding, cooling the workpiece, filling protective gas into the vacuum cavity when the temperature of the vacuum cavity is reduced to be lower than the preset temperature, and taking out the welded workpiece when the air pressure is recovered to be basically consistent with the atmospheric pressure.
In the embodiment, the protective gas is argon or nitrogen or a mixed gas thereof, and can also be directly communicated with the atmosphere and filled into the vacuum cover through air to recover the pressure.
The cross section metallographic phase of the welding seam prepared by the method is shown in figure 4, and the penetration rate of the welding seam reaches 95% through X-ray detection, so that the quality requirement of the welding seam is met.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A vacuum-ultrasonic composite brazing device comprises a vacuum cover for placing a workpiece to be welded, and is characterized in that: the vacuum brazing device is characterized by further comprising a moving unit arranged in the vacuum cover, wherein a pressure sensing unit is fixed on the moving unit, an ultrasonic brazing instrument is fixed below the pressure sensing unit, and the moving unit can drive the pressure sensing unit to move in the vertical direction and the plane perpendicular to the vertical direction.
2. The vacuum-ultrasonic composite brazing apparatus according to claim 1, wherein: the bottom of the vacuum cover is provided with a uniform temperature flat heater, the workpiece is placed on the uniform temperature flat heater, and the uniform temperature flat heater can heat the workpiece.
3. The vacuum-ultrasonic composite brazing apparatus according to claim 2, wherein: the temperature equalizing flat heater comprises a heat insulation plate which is in direct contact with the bottom of the vacuum cover, a heating plate is fixed on the heat insulation plate, a workpiece is placed on the heating plate, and a temperature sensor is further arranged on the heating plate.
4. The vacuum-ultrasonic composite brazing apparatus according to claim 3, wherein: still be provided with the cooling module between heat insulating board and the hot plate, the cooling module is the cavity structure, has the cooling tank of storing coolant through pipe connection.
5. The vacuum-ultrasonic composite brazing apparatus according to claim 1, wherein: the pressure sensing unit comprises a pressure loader connected with the moving unit and a pressure sensor connected with the pressure loader, the pressure loader is connected with the ultrasonic brazing instrument, and the pressure sensor acquires a pressure value loaded by the pressure loader.
6. The vacuum-ultrasonic composite brazing apparatus according to claim 1, wherein: the ultrasonic brazing instrument comprises a transducer connected with the pressure sensing unit and an ultrasonic welding rod connected with the transducer, and the ultrasonic welding rod faces towards a workpiece.
7. The vacuum-ultrasonic composite brazing apparatus according to claim 1, wherein: the motion unit comprises an x-axis motion assembly, a y-axis motion assembly and a z-axis motion assembly;
the z-axis motion assembly comprises a z-axis guide rod, a z-axis guide rail and a z-axis driving part, the z-axis guide rod is in sliding fit with the z-axis guide rail along the vertical direction under the action of the z-axis driving part, and the pressure sensing unit is fixed on the z-axis guide rod;
the y-axis motion assembly comprises a y-axis sliding block fixedly connected with the z-axis guide rail, a y-axis guide rail in sliding connection with the y-axis sliding block, and a y-axis motion part for driving the y-axis sliding block to move on the y-axis guide rail, and the y-axis guide rail is arranged along the horizontal direction;
the x-axis movement assembly comprises two x-axis sliding blocks fixedly connected with two sides of the y-axis guide rail respectively, two x-axis guide rails in sliding fit with the x-axis sliding blocks on the two sides respectively, and an x-axis driving portion for driving the x-axis sliding blocks to slide along the x-axis guide rails, and the x-axis guide rails are perpendicular to the z-axis guide rails and the y-axis guide rails.
8. The vacuum-ultrasonic composite brazing apparatus according to claim 1, wherein: and the vacuum cover is also provided with an air port connected with a vacuum pump.
9. The vacuum-ultrasonic composite brazing apparatus according to claim 4, wherein: still include the switch board, the switch board respectively with ultrasonic brazing appearance, pressure sensing unit, motion unit, hot plate, cooling module communication connection.
10. A method of brazing using the vacuum-ultrasonic composite brazing apparatus according to any one of claims 1 to 9, wherein: comprises that
S1: polishing and removing an oxide film and grease on the surface of a workpiece to be welded, cutting soldering lugs according to the shape and the size of a welding surface, and respectively placing the soldering lugs in absolute ethyl alcohol for ultrasonic cleaning;
s2: placing a soldering lug between the connecting surfaces of two workpieces to be welded, placing the soldering lug into a vacuum cover, and sealing the vacuum cover;
s3: vacuumizing the vacuum cover to less than or equal to 1 multiplied by 10-2MPa；
S4: adjusting the position of a welding point by using a motion unit, and setting a welding path and ultrasonic welding parameters;
s5: heating the workpiece to a specified temperature, starting equipment, and welding according to a preset path and parameters;
s6: and after welding, cooling the workpiece, filling protective gas into the vacuum cavity when the temperature of the vacuum cavity is reduced to be lower than the preset temperature, and taking out the welded workpiece when the air pressure is recovered to be basically consistent with the atmospheric pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110446700.3A CN113042844A (en) | 2021-04-25 | 2021-04-25 | Vacuum-ultrasonic composite brazing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110446700.3A CN113042844A (en) | 2021-04-25 | 2021-04-25 | Vacuum-ultrasonic composite brazing device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113042844A true CN113042844A (en) | 2021-06-29 |
Family
ID=76520218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110446700.3A Withdrawn CN113042844A (en) | 2021-04-25 | 2021-04-25 | Vacuum-ultrasonic composite brazing device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113042844A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101362240A (en) * | 2008-09-19 | 2009-02-11 | 北京工业大学 | Precise ultrasonic assistant brazing device of magnesium alloy and composite material thereof and device thereof |
| US20090308910A1 (en) * | 2008-06-12 | 2009-12-17 | Nicholas Maropis | Ultrasonic device having exponential horn sleeve portion |
| CN101623786A (en) * | 2008-07-10 | 2010-01-13 | 株式会社日立制作所 | Soldering method and soldering apparatus |
| CN103394783A (en) * | 2013-07-30 | 2013-11-20 | 哈尔滨工业大学（威海） | Ultrasonic-assisted vacuum brazing equipment |
| CN112676666A (en) * | 2020-12-01 | 2021-04-20 | 中国电子科技集团公司第三十八研究所 | Vacuum-ultrasonic composite brazing device and method |
-
2021
- 2021-04-25 CN CN202110446700.3A patent/CN113042844A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090308910A1 (en) * | 2008-06-12 | 2009-12-17 | Nicholas Maropis | Ultrasonic device having exponential horn sleeve portion |
| CN101623786A (en) * | 2008-07-10 | 2010-01-13 | 株式会社日立制作所 | Soldering method and soldering apparatus |
| CN101362240A (en) * | 2008-09-19 | 2009-02-11 | 北京工业大学 | Precise ultrasonic assistant brazing device of magnesium alloy and composite material thereof and device thereof |
| CN103394783A (en) * | 2013-07-30 | 2013-11-20 | 哈尔滨工业大学（威海） | Ultrasonic-assisted vacuum brazing equipment |
| CN112676666A (en) * | 2020-12-01 | 2021-04-20 | 中国电子科技集团公司第三十八研究所 | Vacuum-ultrasonic composite brazing device and method |
Non-Patent Citations (1)
| Title |
|---|
| 付秋姣;赵琳琳;: "超声波辅助钎焊技术的发展现状" * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112676666A (en) | Vacuum-ultrasonic composite brazing device and method | |
| CN103394783B (en) | Ultrasonic auxiliary vacuum brazing equipment | |
| CN100500357C (en) | Aluminum, aluminum alloy and composite material ultrasonic vibration liquid phase welding equipment | |
| CN104785880A (en) | Ultrasonic electric field auxiliary braze-welding device and welding method | |
| CN103934534A (en) | Vacuum welding method for thick film substrate and power shell | |
| CN102489813B (en) | Vacuum active brazing process of molybdenum-copper alloys and stainless steel | |
| CN100376353C (en) | Carbon/carbon composite and titanium alloy welding method | |
| CN103229604A (en) | Reflow soldering device and reflow soldering method | |
| CN110883395B (en) | Brazing method for aluminum alloy with surface activation by means of liquid gallium pre-coating | |
| CN111320487A (en) | Silicon nitride ceramic surface modification auxiliary direct diffusion connection method | |
| WO2017049511A1 (en) | Vacuum reacting force welding method and device thereof | |
| CN111702336A (en) | Laser shock auxiliary arc additive manufacturing method | |
| CN114654069A (en) | Molybdenum-copper alloy heat sink ultrasonic-assisted diffusion bonding manufacturing method based on pulse current heating and diffusion welding device | |
| JP2007180447A (en) | Soldering method, soldering apparatus, and method of manufacturing semiconductor device | |
| CN112008178A (en) | Laser fusion brazing packaging method and device for three-dimensional weld joint | |
| CN105014175A (en) | Method for preparing local soft solder coating on surface of aluminum alloy | |
| CN101579768A (en) | Braze-welding method using two-stage contact reaction of aluminum alloy | |
| CN113042844A (en) | Vacuum-ultrasonic composite brazing device and method | |
| CN108857036B (en) | Ultrasonic vibration assisted rolling friction connection method and device | |
| CN108500411B (en) | Ultrasonic brazing device and method based on needle type welding head | |
| CN109175567A (en) | A kind of method for welding of micro-strip plate large area ground connection | |
| CN105643040A (en) | Brazing method for aluminum and aluminum alloy | |
| CN213163629U (en) | Laser welding device for metal bipolar plate | |
| CN110977171B (en) | Vacuum laser-electric arc hybrid welding method and device for improving weld formation | |
| CN104625289B (en) | Aluminium alloy seals structure partial flame heat ultrasonic method for welding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210629 |
|
| WW01 | Invention patent application withdrawn after publication |