CN101200012A - Induction brazing device and method thereof - Google Patents
Induction brazing device and method thereof Download PDFInfo
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- CN101200012A CN101200012A CNA2007101884480A CN200710188448A CN101200012A CN 101200012 A CN101200012 A CN 101200012A CN A2007101884480 A CNA2007101884480 A CN A2007101884480A CN 200710188448 A CN200710188448 A CN 200710188448A CN 101200012 A CN101200012 A CN 101200012A
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Abstract
The invention discloses an induction brazing device, comprising an induction power supply and induction coil. The invention is characterized in that an air-medium Ultrasonic probe is at least included; the air-medium ultrasonic probe is in electrical connection with a high frequency oscillator. The invention also discloses a high frequency braze welding method which uses the induction brazing device, and comprises the steps as follows: select at least one air-medium ultrasonic probe with different diameters according to the size of the connection area or complex degree; adjust the center frequency of the air-medium ultrasonic probe, the oscillating voltage amplitude of the high frequency oscillator output, and the distance between the air-medium ultrasonic probe and weld assembly connector; meanwhile connect the air-medium ultrasonic probe with the oscillator, and connect the induction coil with the induction power supply to complete the welding. Comparing with the dependant use of induction coil and induction power supply when welding the same diameter welding parts, the current output value of the induction power supply and the welding time are all reduced by 10 to 20 percent after being tested; the energy is saved and the welding efficiency is improved.
Description
Technical field
The present invention relates to a kind of induction brazing device, also relate to the induction brazing method of utilizing this induction brazing device, particularly the auxiliary induction brazing method of air ultrasound.
Background technology
With reference to Fig. 1, known induction brazing device comprises sensitive power supply 10 and sensitive coil 1.Induction brazing is with sensitive thermal source 10 heating solder 2 and weldments 3, makes filling composition surface, solder 2 fusing back realize a kind of method of joint welding.This method has a wide range of applications in industrial production.But this method also has certain disadvantages, and mainly is that eddy-current heating speed is fast, and following situation can occur when the thicker weldment of welding: 1. the heating-up temperature of joint is difficult to accurate control, causes the loss of solder easily and spreads inhomogeneous; 2. the Temperature Distribution of joint is even inadequately, and solder and oxide-film reaction are all even inadequately fully.More than 2 cause joint seam rate to descend, influence welding quality.
Summary of the invention
1. the technical problem that will solve: in order to overcome prior art low deficiency of seam rate when the thicker weldment of welding, the invention provides a kind of induction brazing device, utilize the air ultrasound probe to assist, can improve the seam rate of induction brazing.
The present invention also provides the induction brazing that utilizes above-mentioned induction brazing device method.
2. technical scheme: a kind of induction brazing device, comprise sensitive power supply, sensitive coil, be characterized in also comprising at least one air ultrasound probe, the air ultrasound probe is electrically connected with the induced oscillation device.
A kind of induction brazing method of utilizing above-mentioned induction brazing device, be characterized in comprising the steps: at first according to the joint area select for use different-diameter, at least one air ultrasound probe, according to weldment joint area size or complexity; Adjust the distance of oscillating voltage amplitude, air ultrasound probe and the weldment joint of air ultrasound center probe frequency, the output of induced oscillation device, connect air ultrasound probe and induced oscillation device, sensitive circle and sensitive power supply simultaneously, finish welding.
3. beneficial effect: in induction brazing, around joint, be aided with the air ultrasound probe and send ultrasonic wave.After ultrasonic beam reaches the weldment surface through air, part reflection, a part is imported weldment into makes the molten state solder produce ultrasonic vibration.This ultrasonic vibration, one side has changed the surface tension of liquid solder, has strengthened the flowability of liquid solder metal; Make the joint oxide-film be easy to destroyed, cleaning on the other hand, thus under welding condition than low-heat input, guaranteed solder uniform spreading and with the abundant reaction of oxide-film, also reduced the loss of solder.The pricker that the improvement of this two aspect has effectively improved joint closes rate, thereby can guarantee welding quality.After tested, the weldment of welding same diameter is compared with induction power supply with independent use induction coil, and the output current value of induction power supply has reduced by 10～20%; In addition, also reduced 10～20% weld interval, improved welding efficiency.
Below in conjunction with the drawings and specific embodiments the present invention is elaborated.
Description of drawings
Fig. 1 is the device scheme of installation of the embodiment of the invention 1.
Fig. 2 is the device scheme of installation of the embodiment of the invention 2.
Fig. 2 is the device scheme of installation of the embodiment of the invention 3.
Among the figure: 1-sensitive coil, 2-solder, 3-weldment, 4-ultrasonic beam, 5-silicon rubber matching layer, 6-piezo-electric crystal, 7-stube cable, 8-ultrasonic probe shell, 9-high-frequency generator, 10-induction power supply, 11-air ultrasound probe.
The specific embodiment
With reference to Fig. 1, air ultrasound-induction brazing system mainly is made up of induction power supply 10, induction coil 1, induced oscillation device 9 and air ultrasound probe 11, and induction power supply 10 can be medium frequency induction power supply and also can be high frequency induction power supply.Wherein, air ultrasound probe 11 mainly is made up of piezo-electric crystal 6, silicon rubber matching layer 5, stube cable 7, ultrasonic probe shell 8.
During welding, induction power supply 10 output intermediate frequencies or high frequency electric produce eddy current by induction coil 1 in weldment 3 and solder 2, heating weldment and solder, and make the solder fusing.Meanwhile, air ultrasound probe 11 is launched ultrasonic beam 4 continuously under the effect of high-frequency generator 9.After ultrasonic beam reaches weldment 3 surfaces through air, part reflection, a part is imported weldment 3 into makes the molten state solder produce ultrasonic vibration.This ultrasonic vibration, one side has changed the surface tension of liquid solder, has strengthened the flowability of liquid solder metal; Make the joint oxide-film be easy to destroyed, cleaning on the other hand, thus under welding conditions than low-heat input, guaranteed solder uniform spreading and with the abundant reaction of oxide-film, also reduced the loss of solder.The pricker that the improvement of this two aspect has effectively improved joint closes rate, thereby can guarantee welding quality.
The matching layer of air ultrasound probe is selected silicon rubber for use, can effectively strengthen the aerial propagation distance of ultrasonic wave; During welding, can select the ultrasonic probe of different-diameter for use, change the action of ultrasonic waves scope, perhaps select for use plural ultrasonic probe to act on big joint area or complicated joint form; Change the distance of oscillating voltage amplitude, ultrasonic probe and the weldment joint of air ultrasound center probe frequency, high-frequency generator 9 outputs, just can adjust hyperacoustic output energy.
Embodiment 1: with reference to Fig. 1, be that two Φ 32, thickness are the butt joint soldering of the solid mild steel weldment 3 of short cylindrical shape of 8mm, solder is selected copper base solder for use.With 1 air ultrasound probe 11 be placed on welded section directly over, the upper surface distance of detecting head surface and weldment 3 is 150mm, probe diameter is Φ 30, centre frequency is 0.1MHz, the oscillating voltage amplitude that high-frequency generator 9 is exported is 850V.
The medium frequency induction power supply heating is adopted in welding, and air ultrasound probe 11 and high-frequency generator 9, induction coil 1 are connected simultaneously with medium frequency induction power supply 10, finish welding after, disconnect high-frequency generator 9 and medium frequency induction power supply 10 simultaneously.
After tested, the weldment of welding same diameter uses induction coil 1 and medium frequency induction power supply 10 separately, and the induction brazing current value is 480A, and be 45S conduction time, and brazing filler metal erosion is obvious around the joint; Use air ultrasound probe 11 to assist when using induction coil 1 and medium frequency induction power supply 10, the induction brazing current value is 420A, conduction time 35S, joint solder on every side seldom runs off.Through being dissected the back, a plurality of weldments find, the induction brazed joints that air ultrasound probe 11 is assisted, and the pricker rate of closing is 100%, accounts for 90% and the prior art welding point reaches complete seam.
Embodiment 2: with reference to Fig. 2, be the butt joint soldering of the solid mild steel weldment 3 of elongated cylindrical of two Φ 25, the long 150mm of being, solder is selected copper base solder for use.Two air ultrasounds, 11 symmetries of popping one's head in are placed on the side of welded section, and the lateral distance of detecting head surface and weldment 3 is 110mm, and probe diameter is Φ 20, and centre frequency is 0.1MHz, and the oscillating voltage amplitude of high-frequency generator 9 outputs is 800V.
The medium frequency induction power supply heating is adopted in welding, and two air ultrasounds probes 11 are connected with medium frequency induction power supply 10 simultaneously with separately high-frequency generator, induction coil 1 respectively, finish welding after, disconnect high-frequency generator and medium frequency induction power supply 10 simultaneously.
After tested, the weldment of welding same diameter uses induction coil 1 and medium frequency induction power supply 10 separately, and the induction brazing current value is 350A, and be 35S conduction time, and brazing filler metal erosion is obvious around the joint; Use air ultrasound probe 11 to assist when using induction coil 1 and medium frequency induction power supply 10, the induction brazing current value is 310A, conduction time 28S, joint solder on every side seldom runs off.Through being dissected the back, a plurality of weldments find, the induction brazed joints that air ultrasound probe 11 is assisted, and the pricker rate of closing is 100%, accounts for 95% and the prior art welding point reaches complete seam.
Embodiment 3: with reference to Fig. 3, be the butt joint soldering of the tubular mild steel weldment 3 of two external diameter Φ 25mm, wall thickness 3mm, the long 150mm of being, solder is selected copper base solder for use.Two air ultrasounds, 11 symmetries of popping one's head in are placed on the side of welded section, and the lateral distance of detecting head surface and weldment 3 is 100mm, and probe diameter is Φ 20, and centre frequency is 0.1MHz, and the oscillating voltage amplitude of high-frequency generator 9 outputs is 850V.
The high frequency induction power supply heating is adopted in welding, and two air ultrasounds probes 11 are connected with high frequency induction power supply 10 simultaneously with separately high-frequency generator, induction coil 1 respectively, finish welding after, disconnect high-frequency generator and high frequency induction power supply 10 simultaneously.
After tested, the weldment of welding same diameter uses induction coil 1 and induction power supply 10 separately, and the induction brazing current value is 320A, and be 15S conduction time, and the brazing filler metal erosion phenomenon is arranged around the joint sometimes; Use air ultrasound probe 11 to assist when using induction coil 1 and high frequency induction power supply 10, the induction brazing current value is 260A, conduction time 10S, joint solder on every side runs off hardly.Through being dissected the back, a plurality of weldments find, the induction brazed joints that air ultrasound probe 11 is assisted, and the pricker rate of closing is 100%, accounts for 99% and the prior art welding point reaches complete seam.
Claims (4)
1. an induction brazing device comprises induction power supply, induction coil, it is characterized in that: also comprise at least one air ultrasound probe, the air ultrasound probe is electrically connected with high-frequency generator.
2. high frequency brazing device according to claim 1 is characterized in that: described air ultrasound probe and the parallel placement in weldment cross section.
3. induction brazing device according to claim 1 is characterized in that: described air ultrasound probe is placed with the weldment cross section is vertical.
4. high frequency brazing method of utilizing the described induction brazing device of claim 1, it is characterized in that comprising the steps: at first according to the joint area select for use different-diameter, at least one air ultrasound probe, according to weldment joint area size or complexity; Adjust the distance of oscillating voltage amplitude, air ultrasound probe and the weldment joint of air ultrasound center probe frequency, high-frequency generator output, connect air ultrasound probe and high-frequency generator, induction coil and induction power supply simultaneously, finish welding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101884480A CN101200012A (en) | 2007-12-03 | 2007-12-03 | Induction brazing device and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101884480A CN101200012A (en) | 2007-12-03 | 2007-12-03 | Induction brazing device and method thereof |
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| CN101200012A true CN101200012A (en) | 2008-06-18 |
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| CNA2007101884480A Pending CN101200012A (en) | 2007-12-03 | 2007-12-03 | Induction brazing device and method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784986A (en) * | 2012-08-31 | 2012-11-21 | 郑州机械研究所 | Induction brazing temperature field control method with selective wetting effect |
| CN102909449A (en) * | 2012-09-28 | 2013-02-06 | 黄一淼 | Induction brazing welding method for metal part |
| CN104028870A (en) * | 2014-06-06 | 2014-09-10 | 中国电子科技集团公司第三十八研究所 | High-frequency induction solderingmethod for antennaon composite dielectric substrate |
| CN109604807A (en) * | 2018-12-14 | 2019-04-12 | 山东新合源热传输科技有限公司 | A kind of ultrasonic wave auxiliary high frequency device for welding aluminium pipe |
| CN116174832A (en) * | 2023-04-21 | 2023-05-30 | 中国科学院合肥物质科学研究院 | Piezoelectric sensor probe design method |
-
2007
- 2007-12-03 CN CNA2007101884480A patent/CN101200012A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784986A (en) * | 2012-08-31 | 2012-11-21 | 郑州机械研究所 | Induction brazing temperature field control method with selective wetting effect |
| CN102784986B (en) * | 2012-08-31 | 2015-03-04 | 郑州机械研究所 | Induction brazing temperature field control method with selective wetting effect |
| CN102909449A (en) * | 2012-09-28 | 2013-02-06 | 黄一淼 | Induction brazing welding method for metal part |
| CN102909449B (en) * | 2012-09-28 | 2015-04-01 | 浙江正泰电器股份有限公司 | Induction soldering and brazing method for metal part |
| CN104028870A (en) * | 2014-06-06 | 2014-09-10 | 中国电子科技集团公司第三十八研究所 | High-frequency induction solderingmethod for antennaon composite dielectric substrate |
| CN109604807A (en) * | 2018-12-14 | 2019-04-12 | 山东新合源热传输科技有限公司 | A kind of ultrasonic wave auxiliary high frequency device for welding aluminium pipe |
| CN116174832A (en) * | 2023-04-21 | 2023-05-30 | 中国科学院合肥物质科学研究院 | Piezoelectric sensor probe design method |
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Open date: 20080618 |