CN101512786A - Ultrasonic welding using amplitude profiling - Google Patents
Ultrasonic welding using amplitude profiling Download PDFInfo
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- CN101512786A CN101512786A CNA2007800326150A CN200780032615A CN101512786A CN 101512786 A CN101512786 A CN 101512786A CN A2007800326150 A CNA2007800326150 A CN A2007800326150A CN 200780032615 A CN200780032615 A CN 200780032615A CN 101512786 A CN101512786 A CN 101512786A
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Abstract
An ultrasonic welding apparatus has a power supply coupled to a weld stack. The weld stack has an ultrasonic transducer coupled to a horn by a booster. The horn has a horn tip. The weld cycle of the ultrasonic welding apparatus is amplitude profiled so that during an initial period, the weld amplitude at the horn tip is high and after the initial period, the weld amplitude is low.
Description
The cross reference of related application
The application is the continuation application of the novel No.11/837.702 of U.S. utility of submission on August 13rd, 2007, and this application requires to submit on September 1st, 2006 U.S. Provisional Application No.60/842,131 priority.The disclosure of above-mentioned application is combined in herein by reference.
Government rights
U.S. government has charges paid of the present invention permission, and the articles of law of the NIST ATP#70NANB3H3015 that authorizes according to Department of Commerce, and its requirement holder of the patent right that has the right in limited range authorizes to other people with rational condition.
Technical field
The present invention relates to ultrasonic brazing unit and method, and more specifically, relate to, be also referred to as the shearing wave vibration by in being parallel to the direction of surface of the work, using Vltrasonic device and the method that vibration is welded.
Background technology
The model of typical ultrasonic metal solder device 100 has been shown among Fig. 1.The typical components of ultrasonic metal solder device 100 comprises ultrasonic transducer 102, amplitude transformer (booster) 104 and ultrasonic horn 106.Amplitude transformer 104 is connected to transducer 102 and soldering tip 106 by the polar mount (not shown), and this polar mount is fixed on the outer circumferential edges place of the end opposite of cylinder 105.From the frequency of power supply 101 is that the electric energy of 20-60kHz is converted to mechanical energy by ultrasonic transducer 102.Ultrasonic transducer 102, amplitude transformer 104 and soldering tip 106 all are complementary with the electric incoming frequency with power supply by mechanical tuning.The mechanical energy of conversion is transmitted into weld load 108 (such as two metalworks 112,114) by amplitude transformer 104 and soldering tip 106 (generally being 1/2 wavelength axial resonance instrument) in ultrasonic transducer 102.Amplitude transformer 104 and soldering tip 106 carry out the emission mechanical energy and by gain factor to carry out the function of conversion from the mechanical oscillation of ultrasonic transducer 102.Booster gains generally is from 1:0.5 to 1:2.Horn gains generally is from 1:1 to 1:3.Amplitude transformer and horn gains have the output amplitude (from ultrasonic transducer 102) of the peak-to-peak value of 20 μ m, and regulate this amplitude up or down by multiply by the factor.
The mechanical oscillation that cause on tip 110 are motions of carrying out metal solder task together.Basically, axial displacement is produced by ultrasonic transducer 102, adjusts aspect the gain by amplitude transformer 104, and adjusts aspect the gain once more by soldering tip 106.Metalwork 112,114 together to be welded is placed near weld tip (tip 110) and locates.When soldering group cover 118 (ultrasonic transducer 102, amplitude transformer 104 and soldering tips 106) are used vertical force (shown in arrow 116), tip 110 will contact with top metal part 112 to be welded.The axial vibration of ultrasonic horn 106 becomes the scissoring vibration that puts on top metal part 112 now.When weld clamp force 116 increases, scissoring vibration will be transmitted to top metal piece 112 with increasing gradually, cause it to move around.Bottom metal part 114 is placed on the weld anvil 120.Top metal part 112 will be wiped oxide and pollutant from the surface of the metalwork 112,114 that contacts with each other with respect to moving around of bottom metal part 114.Be under this shearing motion and the clamping force after the certain hour amount, the metal material in the welding region between two metalworks 112,114 becomes and twines mutually and finally combine.
The size of the amplitude that tip 110 places need generally is soldered material and the function that carries out in conjunction with the required time.Use bigger weld amplitude will cause in ultrasonic transducer 102, changing more electrical power and causing welding material combination within a short period of time at tip 110 places.Use lower amplitude will cause in ultrasonic transducer 102, changing less electrical power and causing welding material combination in a long time at tip 110 places.The appointment of the weld amplitude at tip 110 places will determine the design of the gain factor of soldering tip 106 and amplitude transformer 104 combinations, because the output of ultrasonic transducer 102 is generally fixed, for example, peak-to-peak value is 20 microns (μ m).
Soldered material also will determine the size at the amplitude of tip 110 places needs.The scope of the typical horn amplitude that uses in metal solder is 40 μ m to 80 μ m (peak-to-peak value).Under the situation of aluminium, will be problematic greater than the amplitude of 50-60 μ m (peak-to-peak value).In higher horn amplitude, exist the trend that makes the aluminium heating and cause its deliquescing.If the interface zone of top metal part 112 is enough soft, tip 110 will be inserted in the top metal part 112 and weaken fertile material, and this can damage welding quality.For this reason, typically, in the aluminium welding, wish that generally horn amplitude maintains below the 55 μ m (peak-to-peak value).
Fig. 2 is thick aluminium 5754 samples of 3mm that illustrate for using various constant weld amplitude to carry out ultrasonic bonding, and weld strength is as the chart of the function of energy.The maximum weld strength that obtains is about 7500 newton (N) or littler.That is, under situation about using than higher constant weld amplitude (64 μ m), weld strength is about 4200N, and under the situation of using lower constant weld amplitude (40 μ m), weld strength is about 7500N.
Summary of the invention
Use amplitude adjustment (amplitude profiling) to obtain higher weld strength according to ultrasonic brazing unit of the present invention and method.At the initial period of welding cycle, use the drive ultrasonic transducer, to produce than higher weld amplitude at the tip place.After initial period, use low drive ultrasonic transducer, to produce lower grade, produce lower weld amplitude at the tip place.
By reading detailed description provided below, will know other applications of the present invention.Although should be appreciated that to show the preferred embodiments of the present invention, detailed description and object lesson are to be used for illustrative purposes, rather than limit the scope of the invention.
Description of drawings
Describe in detail and accompanying drawing by reading, will more fully understand the present invention, in the accompanying drawings:
Fig. 1 is the schematic diagram of the ultrasonic brazing unit of prior art;
Fig. 2 is thick aluminium 5754 samples of 3mm that illustrate for using different constant weld amplitude to carry out ultrasonic bonding, and weld strength is as the chart of the function of energy;
Fig. 3 is the schematic diagram according to the ultrasonic brazing unit of the use amplitude adjustment of an aspect of of the present present invention;
Fig. 4 is the flow chart according to the ultrasonic welding method of the use amplitude adjustment of an aspect of of the present present invention; And
Fig. 5 illustrates voltage in the typical prior art ultrasonic bonding cycle and a series of charts of power;
Fig. 6 is to using use amplitude under the situation of flexible anvil to adjust the curve chart of the test result that 3mm5734 aluminium that (weld amplitude of 60 μ m and 40 μ m) weld and the 3mm5734 aluminium that welds in 60 fixing μ m and fixing 40 μ m weld amplitude compares;
Fig. 7 is to using use amplitude under the situation of fixing anvil block (movable anvil block) to adjust the curve chart of the test result that 3mm 5734 aluminium that (weld amplitude of 60 μ m and 40 μ m) weld and 3mm 5734 aluminium that weld in 60 fixing μ m and the 40 μ m weld amplitude of fixing compare;
Fig. 8 is to using use amplitude under the situation of fixing anvil block (fixing anvil block) to adjust the curve chart of the test result that 3mm 5734 aluminium that (weld amplitude of 60 μ m and 40 μ m) 3mm 5734 aluminium that weld and weld amplitude of using the 60 μ m that fix weld compare;
Fig. 9 is the curve chart that is illustrated in the test result of 25 samples that use 3mm 5734 aluminium that the amplitude adjustment welds under the situation of using flexible anvil; And
Figure 10 is the curve chart of test result that is illustrated in 25 samples of 3mm 5734 aluminium that the adjustment of use amplitude is welded under the situation of using fixing anvil block.
Embodiment
Below to only being exemplary on the illustrative in nature of (one or more) preferred embodiment, do not limit the present invention, its application or use in any way.
With reference to figure 3, the figure shows the ultrasonic brazing unit 300 that utilizes amplitude adjustment (amplitudeprofiling) according to an aspect of of the present present invention.To use identical Reference numeral to represent the element total in the figure, and discuss and to concentrate on difference with the ultrasonic brazing unit 100 of Fig. 1.In ultrasonic brazing unit 300, such as, carry out suitable programming by the controller 303 of controlling power supply 301, power supply 301 is configured to drive the amplitude adjustment of ultrasonic transducer 102 to produce weld amplitude at tip 110 places of soldering tip 106, as described below.
Fig. 4 illustrates the flow chart of adjusting according to the amplitude of an aspect of of the present present invention.The power supply 301 of ultrasonic brazing unit 300 is configured to carries out this amplitude adjustment.Start from 400 and 402 welding cycle, the drive signal of power supply 301 output first (height) level is to drive ultrasonic transducer 102 to produce high weld amplitude at tip 110 places.At the initial period of welding cycle, power supply 301 continues the drive signal of this first level of output.When 404 judge the initial period expiration, then 406, power supply 301 drive signals are reduced to second (low) level, and this second level is lower than first level, to produce low weld amplitude at tip 110 places.Then, power supply 301 drives ultrasonic transducer 102 in the remaining time of welding cycle with this low level.When 408 judge that weld cycle has finished, 410, welding stops.
Amplitude adjustment used herein is represented: use high weld amplitude to start welding cycle, make the welding amplitude drop to low weld amplitude then after the initial period of welding cycle.Although above-described amplitude adjustment comprises weld amplitude and changes once, should be appreciated that this weld amplitude can change repeatedly.It is also understood that and to use more than two weld amplitude.When the initial period of judging welding cycle finishes, that is, " trigger point " of the transition between high weld amplitude and the low weld amplitude schematically can be the time.Should be appreciated that also can use to trigger and judge when this transition takes place such as other of energy level and peak power value etc.
The applicant finds, for aluminium, by the ultrasonic bonding of using amplitude to adjust, can realize the higher weld strength of weld strength that realizes than common use constant weld amplitude.For example, in the process of using 5754 thick aluminium samples of amplitude adjustment welding 3mm, realized the weld strength up to 8800N, wherein, high weld amplitude is 64 μ m, and after entering into 0.2 second welding cycle, weld amplitude is reduced to 43 μ m.And, to compare with welding in constant weld amplitude, the vestige that cause at the interface of 110 pairs of parts of tip (such as, top metal part 112) reduces.
Compare with the situation of using constant weld amplitude, the amplitude adjustment also allows initial weld amplitude to use higher weld amplitude.As discussed above, when welding of aluminum, weld amplitude typically needs to remain on below the 55 μ m.The use amplitude is adjusted, and initial high weld amplitude can surpass 55 μ m.For example, initial high weld amplitude can be 64 μ m.
The applicant believes, the increase of the weld strength that obtains by the ultrasonic bonding of using the amplitude adjustment is because artificial the generation is used for the ideal power distribution map (power profile) of welding cycle and causes.For example, when welding of aluminum, the power curve in ultrasonic bonding cycle is followed such trend---beginning of welding cycle, near the end of welding cycle the time, reduces then, even the motion voltage/amplitude at ultrasonic transducer 102 places also is like this when keeping constant than higher.Fig. 5 is a series of charts that voltage, power and other welding parameters of typical prior art in welding cycle of using constant weld amplitude are shown.
Although in welding cycle, use the drive signal of constant level to drive ultrasonic transducer 102 in the prior art of using constant weld amplitude, the actual welding amplitude at tip 110 places tends to descend in welding cycle.The applicant believes, take place this weld amplitude descend be because, the weld amplitude height at tip 110 places, weld nugget becomes big simultaneously, and the relative hardness of system (interface between metalwork 112,114 and metalwork 112 and the tip 110) is low.Along with the progress of welding cycle, weld nugget becomes big and system becomes harder.The weld amplitude that harder weldment (metalwork 112,114) causes tip 110 places is owing to the mechanical deformation of tip 110 reduces.The reducing of the weld amplitude at tip 110 places tend to prevent since in whole welding cycle the weld amplitude at tip 110 places keep the excessive shear that takes place usually under the situation of high (and constant) and welding caused damage.But in some cases, this natural decline does not take place, thereby weld strength is lower than the situation that nature descends that takes place.This causes welding to have inconsistent weld strength.By using the welding of adjusting according to amplitude of the present invention, guarantee that the weld amplitude at tip 110 places reduces, and the intensity of resulting welding is consistent.
Advantage according to the ultrasonic bonding of use amplitude of the present invention adjustment is, sample drawing intensity is high and reduced the part vestige.As discussed above, use the supersonic welding of constant high amplitude to be connected on a large amount of surperficial heat of generation in the aluminium, this may soften the metalwork 112 that contacts with tip 110.When metalwork 112 softened, tip 110 will be inserted into wherein, produces dark tip vestige.Under the situation of aluminium, after welding was finished, this insertion also can cause tip to adhere to excessive bur from part.
The applicant finds, aluminium is used the ultrasonic bonding of amplitude adjustment it seems can to reduce softening influence near aluminium the part soldered tip 110 (for example, the top metal part 112).At the high initial period of weld amplitude, energy is imported apace to form weld nugget.When (in initial weld amplitude is under the situation of 64 μ m during near softening point such as the material of the soldered part of metalwork 112,114, in 5754 aluminium, be about 0.4-0.5 second), weld amplitude drop to second weld amplitude (such as, 43 μ m), this speed that makes that energy is imported into weld nugget in period in all the other of welding cycle descends.This allows the weld nugget growth, and not softening with tip 110 adjacent metal parts 112.With the minimizing of the material softening of tip 110 adjacent metal parts 112, make tip 110 reduce, and greatly reduced the adhesion between metalwork 112 and the tip 110 to the insertion of metalwork 112.
In one aspect, soldered material is an aluminium, and high weld amplitude is greater than 55 μ m, and low weld amplitude is lower than 55 μ m.In one aspect, soldered material is an aluminium, and high weld amplitude is greater than 60 μ m, and low weld amplitude is lower than 50 μ m.In one aspect, soldered material is an aluminium, and high weld amplitude is greater than 60 μ m, and low weld amplitude is lower than 45 μ m.In one aspect, high weld amplitude is at least than the high 10 μ m of low weld amplitude.
In one aspect, initial period is just less than time that material softening spent of the part adjacent with tip.In one aspect, initial period is about 0.2 second.In one aspect, initial period is about 0.4 second.In one aspect, initial period is about 0.5 second.In one aspect, initial period is in 0.2 second to 0.6 second scope.
Using above-mentioned amplitude to adjust Study of Welding uses Branson Lateral Drive Weld system to come welding of aluminum.Time is used as the trigger point method and when judges switch amplitudes.
Three basic amplitude control technologys are evaluated: 60 μ m-43 μ m, 60 μ m and 40 μ m.In addition, on three different anvil block types, carry out welding: standard flexible, the fixedly anvil block that has the fixedly anvil block of activity anvil block and have fixed anvil block.Whether this research comprises various anvil block types, combined and beneficial effect is provided with this amplitude control method to judge in these particular design every kind.Fixedly anvil design is the big anvil block that is fixed to horizontal driving substrate substantially.In fixed anvil block, there is movably anvil block.This anvil block can be installed to anvil block rigidly or can " float ".Formerly it has been seen in that in the experiment whether (fixedly AB) is installed according to anvil block and maybe can floats (movable AB), in welding performance and intensity, have significant difference by rigidity.Following matrix shows various tests combinations.
| Test | Anvil block | Amplitude control |
| 1 | Flexible | 60 μ m-43 μ m .4s triggers |
| 2 | Flexible | 60μm |
| 3 | Flexible | 40μm |
| 4 | Fixing (movable AB) | 60 μ m-43 μ m .2s triggers |
| 5 | Fixing (movable AB) | 60μm |
| 6 | Fixing (movable AB) | 40μm |
| 7 | Fixing (fixedly AB) | 60 μ m-43 μ m .2s triggers |
| 8 | Fixing (fixedly AB) | 60μm |
| 9 | Fixing (fixedly AB) | 40μm |
Flexible and fixedly the point of the Time Triggered between the anvil block be 0.4s and 0.2s.Do like this is to handle and prevent overload in order to ensure the continuous welding between two anvil block types.For all tests, use be following welding system with some weld parameters fixed.
Welding system: Lateral Drive
Transducer: 5.5kW Branson transducer
Instrument: Gold Booster (gain 1.5), high Q instrument (gain 1:1)
Soldering tip: CL Revl (gain 1.8), peak swing=63 μ m
Welding pressure: 70psi (700lbs.Force)
Aluminium sample: 3mm5754
For every kind of anvil block type, each test generates the chart (3 curve charts altogether shown in Fig. 6-8) of drawing intensity and energy relationship.The data point of each curve chart shows the average and standard deviation of 5 welding.In order to verify these curve charts, for the selected data point expansion expansion research of 25 welding with adding up.
The result who draws from research is presented at Fig. 6-8.As can be seen, there is evident difference in the performance of 3 kinds of anvil block types.For flexible and fixing (movable AB) anvil block type the two, demonstrate drawing strength character preferably.Fixing (fixedly AB) anvil block demonstrates the drawing intensity that generally is about other anvil block types with very big dispersiveness.Because performance is bad,, do not carry out test #9 owing to can not produce the data point of minimal amount.
From the curve chart of Fig. 6-8 as can be seen, test shows is used the amplitude adjustment technology, generally can strengthen the drawing strength character.The use of flexible anvil really shows that 40 μ m welding is near the zone of intensity of amplitude adjustment technology.Test result shown in Fig. 6-8 shows really, fix 40 μ m amplitudes and be welded on more low-yield the setting and produce intensity preferably, and the higher energy setting that is welded on of 60 μ m demonstrates intensity preferably.It seems that the amplitude adjustment be that, higher drawing intensity consistent more by producing has made up this effect on the energy range of broad.
Fixedly the situation of anvil block (movable AB) welding demonstrates amplitude equally and is adjusted at the consistent more weld strength of generation on the wide energy range.The high strength energy of short arc and high amplitude setting shows on the contrary with the flexible anvil data.Use with fixing 40 μ m weld amplitude of anvil block (movable AB) is provided with at higher energy and produces the high strength welding, and the use of 60 μ m weld amplitude is provided with at lower energy and produces strong welding.As can be seen, this effect has been made up in the use of amplitude adjustment, in stronger, the consistent more welding of energy range generation of broad.3000J data point place at fixing anvil block (movable AB) is in fact stronger with the weld strength (up to 7000N) that the identical energy grade produces than using flexible anvil from the intensity (up to 8000N) that the amplitude adjustment produces.
At 3000J, as can be seen, the data of adjusting amplitude show from the average drawing strength ratio of fixing anvil block (movable AB) the drawing intensity good slightly (8kN is to 6.8kN) from flexible anvil.In order to ensure this result is not the result of low sample size, for flexible and fixing two kinds of situations of anvil block, all uses amplitude to be adjusted at 3000J and has prepared 25 samples.Demonstrated this result in Fig. 9 and 10, and the result represents, for flexible and fixing anvil block (movable AB), the 3000J point is that statistics goes up equivalence.
Description of the invention only is exemplary in essence, thereby the distortion that does not depart from purport of the present invention should be included in protection scope of the present invention.This distortion should not be considered to depart from the spirit and scope of the present invention.
Claims (22)
1. one kind is used for method that the part supersonic welding is connected together, and this method was included in welding cycle carries out the amplitude adjustment to weld amplitude.
2. method according to claim 1, wherein, the initial period that described amplitude adjustment is included in described welding cycle produces high weld amplitude at the tip place of the soldering tip of ultrasonic brazing unit, and produces low weld amplitude after described initial period at described tip place.
3. method according to claim 2 comprises, expires to this expiration welding cycle from described initial period, produces described low weld amplitude.
4. method according to claim 3 wherein, is used to judge that the trigger point of switch amplitudes when is any one among time, energy level or the peak power value.
5. one kind is used for method that the supersonic welding of aluminium part is connected together, this method comprises: produce high weld amplitude at the tip place of the soldering tip of ultrasonic brazing unit and produce low weld amplitude at described tip place after described initial period by the initial period in welding cycle, during welding cycle weld amplitude is carried out the amplitude adjustment.
6. method according to claim 5 wherein produces high weld amplitude and comprise that generation is higher than the weld amplitude of 55 μ m, and the low weld amplitude of generation comprises that generation is lower than the weld amplitude of 55 μ m.
7. method according to claim 6 wherein produces high weld amplitude and comprises producing and be higher than the weld amplitude of 60 μ m, and produces this low weld amplitude and comprise and produce the weld amplitude that is lower than 50 μ m.
8. method according to claim 6 wherein produces high weld amplitude and comprise that generation is higher than the weld amplitude of 60 μ m, and the low weld amplitude of generation comprises that generation is lower than the weld amplitude of 50 μ m.
9. method according to claim 6 wherein produces high weld amplitude and low weld amplitude and comprises producing and make high weld amplitude and the low weld amplitude of this high weld amplitude than the high at least 10 μ m of this low weld amplitude.
10. method according to claim 5, wherein said initial period just begin to soften the time that is spent less than aluminium when carrying out ultrasonic bonding with high weld amplitude.
11. method according to claim 5, wherein said initial period is about 0.2 second.
12. method according to claim 5, wherein said initial period is about 0.4 second.
13. method according to claim 4 is used to wherein to judge that the trigger point of switch amplitudes when is any one among time, energy level or the peak power value.
14. a ultrasonic brazing unit comprises:
Power supply, it is connected to the soldering group cover, and this soldering group cover comprises the ultrasonic transducer that is connected to the soldering tip with tip by amplitude transformer; And
Described power supply drives described ultrasonic transducer producing high weld amplitude at described tip place at the initial period of welding cycle, and drives described ultrasonic transducer to produce low weld amplitude at described tip place after described initial period.
15. device according to claim 14, wherein the material that is welded by described ultrasonic brazing unit is an aluminium, and described high weld amplitude is higher than 55 μ m, and described low weld amplitude is lower than 55 μ m.
16. device according to claim 15, wherein said high weld amplitude is higher than 60 μ m, and described low weld amplitude is lower than 50 μ m.
17. device according to claim 15, wherein said high weld amplitude is higher than 60 μ m, and described low weld amplitude is lower than 45 μ m.
18. device according to claim 14, wherein said initial period just begin to soften the time that is spent less than the material of part soldered when carrying out ultrasonic bonding with described high weld amplitude.
19. device according to claim 15, wherein said initial period just begin to soften the time that is spent less than aluminium when carrying out ultrasonic bonding with described high weld amplitude.
20. device according to claim 15, wherein said initial period is about 0.2 second.
21. device according to claim 15, wherein said initial period is about 0.4 second.
22. device according to claim 15, wherein judge described power supply when the trigger point of switch amplitudes be among time, energy level or the peak power value any one.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US84213106P | 2006-09-01 | 2006-09-01 | |
| US60/842,131 | 2006-09-01 | ||
| US11/837,702 | 2007-08-13 |
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| CN101512786A true CN101512786A (en) | 2009-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007800326150A Pending CN101512786A (en) | 2006-09-01 | 2007-08-17 | Ultrasonic welding using amplitude profiling |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248243A (en) * | 2010-05-05 | 2011-11-23 | 肖特太阳能股份公司 | Method and device for introducing solder onto a workpiece |
| CN104136162A (en) * | 2012-02-20 | 2014-11-05 | 必能信超声公司 | Method for welding parts with low thermal conductivity tool and vibratory welder having high mechanical characteristics and vibratory welder |
| CN107174364A (en) * | 2017-05-20 | 2017-09-19 | 桂林市啄木鸟医疗器械有限公司 | A kind of weld tabs and the ultrasonic dental scaler containing it |
| CN109317813A (en) * | 2018-12-07 | 2019-02-12 | 上海骄成机电设备有限公司 | A kind of wave welding head of ultrasonic wave |
| CN114611369A (en) * | 2022-05-10 | 2022-06-10 | 浙江大学 | Multi-physical-field coupled metal ultrasonic welding numerical simulation analysis method |
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2007
- 2007-08-17 CN CNA2007800326150A patent/CN101512786A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248243A (en) * | 2010-05-05 | 2011-11-23 | 肖特太阳能股份公司 | Method and device for introducing solder onto a workpiece |
| CN104136162A (en) * | 2012-02-20 | 2014-11-05 | 必能信超声公司 | Method for welding parts with low thermal conductivity tool and vibratory welder having high mechanical characteristics and vibratory welder |
| CN107174364A (en) * | 2017-05-20 | 2017-09-19 | 桂林市啄木鸟医疗器械有限公司 | A kind of weld tabs and the ultrasonic dental scaler containing it |
| CN109317813A (en) * | 2018-12-07 | 2019-02-12 | 上海骄成机电设备有限公司 | A kind of wave welding head of ultrasonic wave |
| CN114611369A (en) * | 2022-05-10 | 2022-06-10 | 浙江大学 | Multi-physical-field coupled metal ultrasonic welding numerical simulation analysis method |
| CN114611369B (en) * | 2022-05-10 | 2022-08-19 | 浙江大学 | Multi-physical-field coupled metal ultrasonic welding numerical simulation analysis method |
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