CN103394783B - Ultrasonic auxiliary vacuum brazing equipment - Google Patents
Ultrasonic auxiliary vacuum brazing equipment Download PDFInfo
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- CN103394783B CN103394783B CN201310325394.3A CN201310325394A CN103394783B CN 103394783 B CN103394783 B CN 103394783B CN 201310325394 A CN201310325394 A CN 201310325394A CN 103394783 B CN103394783 B CN 103394783B
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Abstract
The invention discloses a kind of ultrasonic auxiliary vacuum brazing equipment, it is characterized in that vacuum chamber is arranged on stand, the stand of vacuum chamber side is provided with lead screw guide rails column, lead screw guide rails column upper end is provided with crossbeam, ultrasonic transducer is fixed on crossbeam, ultrasonic variable amplitude bar is stretched in vacuum chamber through flange, in vacuum chamber, ultrasonic variable amplitude bar has erector's station and heating plate, lowering or hoisting gear on stand is connected with heating plate through vacuum chamber, load coil is provided with between erector's station and ultrasonic variable amplitude bar, load coil is connected with the induction heating apparatus outside vacuum chamber, the wall of vacuum chamber is respectively equipped with air inlet, bleeding point, two vacuum glove interfaces, vacuum observation panel, vacuum meter interface, thermocouple interface, ultrasonic transducer, heating plate, induction heating apparatus, vacuum meter, thermocouple is connected with switch board with by holding wire with vavuum pump, ultrasonic assistant brazing under the present invention realizes vacuum condition or under protective atmosphere condition.
Description
Technical field
The present invention relates to brazing equipment, specifically high, the measured ultrasonic auxiliary vacuum brazing equipment of matter of a kind of postwelding joint bonding strength.
Background technology
As everyone knows, soldering is as a kind of important Material Joining Technology, vital effect is played in the development of modern industrial technology, it not only can realize the connection of metal material, and the connection of the new material such as pottery, composite can be realized, particularly for the connection of foreign material, the advantage that soldering has other welding methods incomparable.But, for the brazing of material, the removal of materials to be welded surface film oxide has important impact for the wetting and spreading of solder and the interaction of solder and mother metal, and can the removal of oxide-film have become the deciding factor that obtain high-performance soldered fitting to a certain extent.Ultrasonic assistant brazing technology utilizes the effect of ultrasonic vibration physics striping, brazing flux can be replaced to remove the oxide-film on materials to be welded surface, be widely used in the connection between various metals, pottery and composite.Ul-trasonic irradiation, when liquid solder, can produce the eddy current effect of acoustic cavitation harmony, can the oxide-film on broken welded mother metal surface, and the auxiliary welded mother metal of liquid solder wetting, accelerates boundary material transmission, improve soldered fitting quality.
At present, conventional ultrasonic assistant brazing equipment such as ultrasonic wave flatiron, ultrasonic assistant metal dip brazing equipment, ultrasonic wave Wave soldering apparatus and the patent No. magnesium alloy and composite precise ultrasonic assistant brazing equipment thereof disclosed in resistance and ultrasonic vibration compound heating soldering equipment and 200810222624.2 disclosed in 201020235980.0 are all implement soldering in air ambient.Although ultrasonic cavitation can replace brazing flux to remove oxide-film; but it can not protect clean surface before the brazing; the surface tension of solder itself can not be reduced; therefore for the poor welded mother metal of some oxidation-resistance properties and solder; particularly for active solder, current ultrasonic assistant brazing equipment is adopted to be difficult to obtain desirable soldered fitting.
Summary of the invention
Operationally workpiece to be welded and solder are exposed in air to the present invention seeks to solve existing ultrasonic assistant brazing equipment, in heating process, make weldment and solder oxidation cause interfacial combined function poor, the problem of joint quality instability, provides that a kind of bonding strength is high, the good ultrasonic auxiliary vacuum brazing equipment of quality.
The present invention is the technical scheme taked that solves the problem: a kind of ultrasonic auxiliary vacuum brazing equipment, comprises by vacuum chamber, vavuum pump, ultrasonic transducer, ultrasonic variable amplitude bar, induction heating apparatus, switch board and stand, it is characterized in that vacuum chamber is arranged on stand, the stand of vacuum chamber side is provided with lead screw guide rails column, lead screw guide rails column upper end is provided with crossbeam, ultrasonic transducer is fixed on crossbeam, ultrasonic variable amplitude bar is stretched in vacuum chamber through flange, in vacuum chamber, ultrasonic variable amplitude bar has erector's station and heating plate, lowering or hoisting gear on stand is connected with heating plate through vacuum chamber, load coil is provided with between erector's station and ultrasonic variable amplitude bar, load coil is connected with the induction heating apparatus outside vacuum chamber, and the wall of vacuum chamber is respectively equipped with air inlet, bleeding point, two vacuum glove interfaces, vacuum observation panel, vacuum meter interface, thermocouple interface, ultrasonic transducer, heating plate, induction heating apparatus, vacuum meter, thermocouple and vavuum pump are electrically connected with switch board through holding wire.
Ultrasonic variable amplitude bar top of the present invention cover has metal bellows, is integrated in vacuum chamber by ultrasonic variable amplitude bar by bellows.
Ultrasonic variable amplitude bar of the present invention is processed by high-temperature titanium alloy or tool steel.
Workbench of the present invention is processed by copper or copper alloy.
The present invention is by being connected to high frequency outside vacuum chamber or Intermediate Frequency Induction Heating Equipment provides thermal source to workpiece to be welded, and the quick ultrasonic assistant brazing realizing workpiece connects; Vacuum chamber front portion is provided with two glove ports, can be realized assembling and the soldering of workpiece to be welded by this interface under vacuum environment or protective gas condition; Square observation window is set above glove ports, can the assembling, position, welding quality etc. of Real-Time Monitoring workpiece to be welded by this observation window, its beneficial effect one realizes aluminium, aluminium alloy and the removal of aluminum matrix composite ultrasonic surface assisted oxidation film, removing surface, activation and soldering all can complete under vacuum, not only welding quality improves, and can prevent the secondary pollution of welding surface before weldering and oxidation; Two is the ultrasonic assistant brazings realized under gas shield condition: by vacuumizing the protective gas such as rear backfill nitrogen, argon gas, complete the brazing of workpiece to be welded under non-oxidizing gas protective condition; Three is realize that workpiece to be welded assembles under vacuum condition or protective gas condition, ultrasonic assistant brazing once completes; Four is the pressure that ultrasonic wave vibrating arm of the present invention can provide 1KN ~ 10KN, and the ultrasonic assistant diffusion therefore adopting this equipment also can carry out portion of material and miniature workpiece connects or transient liquid phase bonding, and postwelding joint bonding strength is high, quality good.
Accompanying drawing explanation
Fig. 1 is agent structure schematic diagram of the present invention.
Fig. 2 is internal vacuum chamber structural representation in the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated:
A kind of ultrasonic auxiliary vacuum brazing equipment, comprise by vacuum chamber, vavuum pump, ultrasonic transducer, ultrasonic variable amplitude bar, induction heating apparatus, switch board and stand, the structure of above-mentioned each part and the interconnected relationship between them same as the prior art, this does not repeat, the invention is characterized in that vacuum chamber is arranged on stand, the stand of vacuum chamber side is provided with lead screw guide rails column, lead screw guide rails column upper end is provided with crossbeam, ultrasonic transducer is fixed on crossbeam, ultrasonic variable amplitude bar top cover has metal bellows, ultrasonic variable amplitude bar is integrated in vacuum chamber through flange by metal bellows, ultrasonic variable amplitude bar is stretched in vacuum chamber, in vacuum chamber, ultrasonic variable amplitude bar has erector's station and heating plate, ultrasonic variable amplitude bar is processed by high-temperature titanium alloy or tool steel, lowering or hoisting gear on stand is connected with heating plate through vacuum chamber, load coil is provided with between erector's station and ultrasonic variable amplitude bar, load coil is connected with the induction heating apparatus outside vacuum chamber, the wall of vacuum chamber is respectively equipped with air inlet, bleeding point, two vacuum glove interfaces, vacuum observation panel, vacuum meter interface, thermocouple interface, ultrasonic transducer, heating plate, induction heating apparatus, vacuum meter, thermocouple and vavuum pump are electrically connected with switch board through holding wire, above-mentioned workbench is processed by copper or copper alloy, above-mentioned lowering or hoisting gear can adopt screw-and-nut, also hydraulically extensible rod-type can be adopted, its structure is same as the prior art, this does not repeat.
As shown in the figure: the composition of ultrasonic auxiliary vacuum brazing equipment mainly comprises: equipment stand (1), stand (1) is provided with vacuum chamber (7), vacuum chamber (7) front portion is provided with two glove ports (5) can realize the assembling of workpiece to be welded under vacuum or gas shield condition, observation window (6) is installed in glove ports (5) top can realize workpiece to be welded (18) assembling, the enforcement of soldering and welding quality is observed, vacuum chamber upper left quarter and lower left quarter are respectively equipped with vacuum meter interface (8) and thermocouple interface (9), the observing and controlling of vacuum degree in vacuum chamber and temperature can be realized, vacuum chamber (7) top adopts flange and metal bellows (14) to realize being tightly connected of Under Ultrasonic Vibration lever (10) and vacuum chamber (7), Under Ultrasonic Vibration lever (10) is integrated in vacuum chamber (7), realize the ultrasonic assistant brazing of workpiece to be welded (18), vacuum chamber (7) bottom erector's station (19), resistive heating device (20) and lowering or hoisting gear (13), the height being adjusted workpiece to be welded (18) by lowering or hoisting gear is contacted with Under Ultrasonic Vibration lever (10) to make it, resistive heating device (20) generation heat conduction to workbench (19) is treated welder's part (18) and is heated, load coil (17) is installed at vacuum chamber rear portion, load coil (17) is treated welder's part (18) by the induction heating apparatus (16) being connected to vacuum chamber (7) outside and is heated, resistance conducts heating and eddy-current heating two kinds of mode of heatings can be used alone and also can use simultaneously, bleeding point (22) and air inlet (21) are arranged on vacuum chamber (7) bottom, vavuum pump (11) makes vacuum chamber (7) obtain vacuum environment by bleeding point (22), the gases such as the nitrogen of backfill or argon gas make vacuum chamber (7) obtain protective atmosphere environment by air inlet (21), ultrasonic transducer (4) can carry out ultrasonic frequency, amplitude, the control of power etc., ultrasonic transducer (4) is fixed on crossbeam (3), crossbeam (3) is connected with lead screw guide rails column (2), the upper and lower displacement of Under Ultrasonic Vibration lever (10) can be realized by crossbeam (3) moving up and down on lead screw guide rails column (2) and accurately locate, ultrasonic vibration installation, vacuum meter, thermocouple, vavuum pump (11), resistive heating device (20), induction heating apparatus (16), workbench lifting device (13) is connected with switch board (12) by holding wire, by the normal operation of the switch on switch board or this equipment of programme-control.
Application example 1: select Al90Si10(mass fraction .%) solder, carries out ultrasonic assistant brazing connection to 2014 aluminium alloys.
Concrete steps:
1. adopt the welding surface of 200# ~ 800# sand papering 2014 aluminium alloy test specimen before weldering, adopt acetone to carry out Ultrasonic Cleaning 10min(at ambient temperature subsequently and comprise solder used), be positioned on workbench (19) after test specimen and solder dry,
2. close vacuum chamber (7), open vavuum pump (11) to vacuumize vacuum chamber (7), when vacuum is greater than 1.3 × 10-3Pa, by sealing gloves in glove ports (5), the test specimen to be welded on workbench (19) and solder are assembled into lap joint
3. then start lowering or hoisting gear (13) adjustment workbench to proper height by switch board (12), by resistive heating device (20) heating station and test specimen to 590 DEG C to be welded,
4. starting crossbeam (3) by switch board (12) after monitoring brazing filler metal melts by observation panel (6) drives ultrasonic transducer (4) to move down together, stops after Under Ultrasonic Vibration lever (10) with test specimen close contact to be welded,
5. start ultrasonic wave generation systems, setpoint power output is 1.6KW, amplitude is 10 μm, frequency is 20KHZ, and time of vibration is 5s, Under Ultrasonic Vibration lever (10) is raised and be separated with weldment after vibration stops, 6. after continuing insulation 3min, stop heating cooling with stove, be cooled to after room temperature until weldment and resetted by workbench, backfill nitrogen is opened vacuum chamber and is taken out weldment, and joint tensile shear strength can reach 86MPa after tested.
Application example 2:
Select Al90Si12 (mass fraction .%) solder, to SiC reinforcement mutually for the aluminum matrix composite (SiCP/ Al) of 55Vol.% carries out brazing.
Concrete steps:
1. before weldering, adopt the welding surface of 200# ~ 800# sand papering SiCP/Al composite material test piece, adopt acetone to carry out Ultrasonic Cleaning 10min(at ambient temperature subsequently and comprise solder used), be positioned over after test specimen and solder dry on workbench (19)
2. close vacuum chamber (7), open vavuum pump (11) to vacuumize vacuum chamber (7), when vacuum is greater than 1.3 × 10-3Pa, by sealing gloves in glove ports (5), the test specimen to be welded on workbench (19) and solder are assembled into lap joint
3. then start lowering or hoisting gear (13) adjustment workbench to proper height by switch board (12), open induction heating equipment (16), by about load coil (17) heating test specimen to 580 DEG C,
4. starting crossbeam (3) by switch board (12) after monitoring brazing filler metal melts by observation panel (6) drives ultrasonic transducer (4) to move down together, stops after Under Ultrasonic Vibration lever (10) with test specimen close contact to be welded,
5. start ultrasonic wave generation systems, setpoint power output is 1.6KW, amplitude is 10 μm, frequency is 20KHz, and time of vibration is 10s, Under Ultrasonic Vibration lever (10) is raised and be separated with weldment after vibration stops, 6. stop heating cooling with stove, be cooled to after room temperature until weldment and resetted by workbench, backfill nitrogen is opened vacuum chamber and is taken out weldment, and joint tensile shear strength can reach 104MPa after tested.Application example 3: select Al90Si10(mass fraction .%) solder, carries out brazing to 2014 aluminium alloys.
Concrete steps:
With application example 1 unlike closing vacuum chamber (7) in step 2, open vavuum pump (11) to vacuumize vacuum chamber (7), when vacuum is greater than 1.3 × 10-3Pa, open slide valve and cut off vacuum chamber (7) and vavuum pump (11), in vacuum chamber, backfilling argon gas to vacuum chamber pressure by air inlet (21) is 105Pa, then adopts sealing gloves in glove ports (5) that the test specimen to be welded on workbench (19) and solder are assembled into lap joint.All the other steps are identical with application example 1, and joint tensile shear strength can reach 78MPa after testing.
Application example 4:
Select Al90Si12 (mass fraction .%) solder, to SiC reinforcement mutually for the aluminum matrix composite (SiCP/Al) of 55Vol.% carries out brazing.
Concrete steps: with application example 3 unlike closing vacuum chamber (7) in step 2, open vavuum pump (11) to vacuumize vacuum chamber (7), when vacuum is greater than 1.3 × 10-3Pa, open slide valve and cut off vacuum chamber (7) and vavuum pump (11), in vacuum chamber, backfilling argon gas to vacuum chamber pressure by air inlet (21) is 105Pa, then adopts sealing gloves in glove ports (5) that the test specimen to be welded on workbench (19) and solder are assembled into lap joint.All the other steps are identical with application example 3, and joint tensile shear strength can reach 98MPa after testing.
Claims (3)
1. a ultrasonic auxiliary vacuum brazing equipment, comprises by vacuum chamber, vavuum pump, ultrasonic transducer, ultrasonic variable amplitude bar, induction heating apparatus, switch board and stand, it is characterized in that vacuum chamber is arranged on stand, the stand of vacuum chamber side is provided with lead screw guide rails column, lead screw guide rails column upper end is provided with crossbeam, ultrasonic transducer is fixed on crossbeam, ultrasonic variable amplitude bar is stretched in vacuum chamber through flange, in vacuum chamber, ultrasonic variable amplitude bar has erector's station and heating plate, lowering or hoisting gear on stand is connected with heating plate through vacuum chamber, load coil is provided with between erector's station and ultrasonic variable amplitude bar, load coil is connected with the induction heating apparatus outside vacuum chamber, and the wall of vacuum chamber is respectively equipped with air inlet, bleeding point, two vacuum glove interfaces, vacuum observation panel, vacuum meter interface, thermocouple interface, ultrasonic transducer, heating plate, induction heating apparatus, vacuum meter, thermocouple and vavuum pump are electrically connected with switch board by holding wire.
2. ultrasonic auxiliary vacuum brazing equipment according to claim 1, it is characterized in that ultrasonic variable amplitude bar top cover has metal bellows, ultrasonic variable amplitude bar is connected with vacuum chamber by metal bellows.
3. ultrasonic auxiliary vacuum brazing equipment according to claim 1, is characterized in that ultrasonic variable amplitude bar is processed by high-temperature titanium alloy or tool steel.
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| CN201310325394.3A CN103394783B (en) | 2013-07-30 | 2013-07-30 | Ultrasonic auxiliary vacuum brazing equipment |
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| EP4344817A1 (en) * | 2022-09-30 | 2024-04-03 | Euromat Gmbh | Method for joining workpieces, and joined product |
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