CN103785963A - Ultrasonic electric arc composite welding device - Google Patents
Ultrasonic electric arc composite welding device Download PDFInfo
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- CN103785963A CN103785963A CN201410063336.2A CN201410063336A CN103785963A CN 103785963 A CN103785963 A CN 103785963A CN 201410063336 A CN201410063336 A CN 201410063336A CN 103785963 A CN103785963 A CN 103785963A
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- 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
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
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Abstract
The invention discloses an ultrasonic electric arc composite welding device which comprises a conducting rod (1), an ultrasonic transducer (2), a first level ultrasonic amplitude transformer (4), a welding nozzle (7), a consumable electrode (10), an ultrasonic power source (13), a water cooling system (14) and a welding power source (15). The device further comprises a second level ultrasonic amplitude transformer (6) and an ultrasonic transmitting terminal (8). The ultrasonic transducer (2) is connected with the first level ultrasonic amplitude transformer (4) connected with the second level ultrasonic amplitude transformer (6). The second level ultrasonic amplitude transformer (6) is connected with the ultrasonic transmitting terminal (8). The lower end of the ultrasonic transmitting terminal (8) is shaped like a horn mouth provided with a plurality of air holes (9). The amplitude transformers of two levels are adopted for ultrasound amplification, the horn-mouth-shaped transmitting terminal is adopted, and therefore the sound radiation capacity is greatly improved, the sound scattering effect is effectively reduced, and the sound radiation efficiency is improved wholly.
Description
Technical field
The present invention relates to arc welding and arc smelting field, be specifically related to a kind of ultrasonic electric arc composite welding apparatus.
Background technology
At present, the Welding Structure that major industrial country of the world produces accounts for the 50-60% of output of steel.Wherein being most widely used of arc-welding.Arc welding is, by welding gun, gas (as inert gas argon gas and nitrogen) is converted to plasma high enthalpy gas, and smelting method of attachment take it as thermal source.In order to expand the range of application of arc welding and further to improve welding efficiency, many new arc welding methods are there are, by to the regulation and control of welding heat source to improve arc characteristic and the weld seam Pool under normal standard, as high-frequency impulse argon arc welding, the electric arc combined weldering of laser enhancing and two tungsten electrode TIG weldering etc.Based on same theory, also in view of the associated advantages of ultrasonic vibration, more and more scholars are incorporated into ultrasonic vibration in welding, as ultrasonic electric arc welding, the processing of postwelding ultrasonic impact, power ultrasonic welding etc.Wherein aspect ultrasonic wave and electric arc combined weldering, in prior art, application number is that 200710144659.4 and 200710144660.7 patent discloses respectively the compound welding method of ultrasonic wave and non-melt pole and melt pole electrical arc welding process.Ultrasonic by introducing in arc welding, arc constriction is obvious, and energy is more concentrated, the fusion penetration of weld seam increases, according to document " based on 304 stainless steel TIG welding of ultrasonic vibration, Fanyang sun, Sun Qingjie; Yang Chunli; " welding journal ", 30 (2), 91-94 " report, there is obvious refinement in ultrasonic electric arc welding weld seam interior tissue, joint quality is improved.But known according to the feature of acoustic propagation, the energy attenuation that the factor such as propagation process of sound wave is subject to temperature, flue dust causes is very serious, how further to improve acoustic radiation ability, and reducing acoustic attenuation is a difficult point in ultrasonic electric arc composite welding equipment.In the patent that is 201010291292.0 at application number, a kind of focus ultrasonic sound field and melt pole electrical arc composite welding apparatus are disclosed, be characterized in that concave surface is focused on to sound emission end focus acts on droplet transfer position to improve welding efficiency, but in obtaining the raising of local acoustical radianting capacity, ignore the group effect of sound field, because radiation end face is less, more favourable to little standard welding, for large standard welding, sound restoring force deficiency easily causes electric arc stable not.It should be noted that in addition that power ultrasonic is applied in air also there is certain difficult point, and the one, common transducer is with the serious mismatch of acoustic impedance of gas medium; Another is exactly ultrasonic quick decay in gas medium, and this has also weakened arc space acoustic radiation ability to a certain extent.So for ultrasonic electric arc welding field, further solve power ultrasonic generating means acoustic impedance coupling, optimize transmitting terminal shape, improve stabilization of equipment performance, expanding application is future thrust.
Summary of the invention
The object of the invention is for solving above-mentioned deficiency, a kind of ultrasonic electric arc composite welding apparatus is provided.
The object of the invention is to be achieved through the following technical solutions:
A kind of ultrasonic electric arc composite welding apparatus, comprise conducting rod, ultrasonic transducer, first order ultrasonic amplitude transformer, welding tip, consumable electrode, ultrasonic-frequency power supply, water-cooling system and the source of welding current, it is characterized in that: also comprise second level ultrasonic amplitude transformer and ultrasound emission end, ultrasonic transducer connects first order ultrasonic amplitude transformer, first order ultrasonic amplitude transformer connects second level ultrasonic amplitude transformer, second level ultrasonic amplitude transformer connects ultrasound emission end, ultrasound emission end coated outside has welding tip, the lower end of ultrasound emission end is bell mouth shape, on horn mouth, have multiple passages, ultrasonic-frequency power supply is connected with ultrasonic transducer, water-cooling system is connected with the water-cooled through hole on first order ultrasonic amplitude transformer, ultrasonic transducer, first order ultrasonic amplitude transformer, second level ultrasonic amplitude transformer and ultrasound emission Duan center have concentric axis through-hole, conducting rod is positioned at axis through-hole, and not with ultrasonic transducer, first order ultrasonic amplitude transformer, second level ultrasonic amplitude transformer and ultrasound emission end contact, the two poles of the earth of the source of welding current are connected with conducting rod and workpiece to be welded respectively, conducting rod is hollow, consumable electrode is through conducting rod inside, between consumable electrode and workpiece to be welded, form welding arc.
The present invention also has following feature:
1, the horn mouth top external diameter of described ultrasound emission end is identical with second level ultrasonic amplitude transformer external diameter.
2, the amplification coefficient of described first order ultrasonic amplitude transformer and second level ultrasonic amplitude transformer is all between 6～10.
3, described consumable electrode or while being non-melt electrode, conducting rod is solid electric pole, non-melt electrode is embedded in conducting rod below.
4, described first order ultrasonic amplitude transformer is not identical with second level ultrasonic amplitude transformer cross section size.
The present invention has following useful effect: due to welding process operating mode more complicated, and that acoustic vibration has is very high non-linear, acoustic propagation between sound emission end and workpiece, being welded high temperature and flue dust affects and can utilize acoustic energy loss larger, and the ultrasonic amplification of two-stage ultrasonic transformer of the present invention and bell mouth shape transmitting terminal can improve acoustic radiation ability greatly.Adopt the design of variable cross-section bell mouth shape transmitting terminal can obviously reduce the migration of energy from fundamental frequency mode, investigate total energy input and find with the ratio of the energy of total dissipation, the cross section horn mouth expanding is gradually conducive to suppress low-order harmonic.At the sound wave of thickness direction vibration, through transmitting terminal, internal reflection enters radiation space, reaches a kind of sound beam focusing effect, effectively reduces sound scattering effect, and entirety has improved acoustic radiation efficiency.In addition, the design of the bell mouth shape ultrasound emission end with passage also can effectively solve the problem of protection-gas welding deficiency.
Accompanying drawing explanation
Fig. 1 is positive overall structure schematic diagram of the present invention;
Fig. 2 is ultrasound emission end top view of the present invention;
Fig. 3 is non-melt electrodes conduct bar structural representation of the present invention;
Fig. 4 is consumable electrode conducting rod structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated:
A kind of ultrasonic electric arc composite welding apparatus, comprise conducting rod 1, ultrasonic transducer 2, first order ultrasonic amplitude transformer 4, welding tip 7, consumable electrode 10, ultrasonic-frequency power supply 13, water-cooling system 14 and the source of welding current 15, this device also comprises second level ultrasonic amplitude transformer 6 and ultrasound emission end 8, ultrasonic transducer 2 is fastenedly connected by bolt and first order ultrasonic amplitude transformer 4, first order ultrasonic amplitude transformer 4 is fastenedly connected by bolt and second level ultrasonic amplitude transformer 6, second level ultrasonic amplitude transformer 6 is fastenedly connected by bolt and ultrasound emission end 8, ultrasound emission end 8 coated outside have welding tip 7, the lower end of ultrasound emission end 8 is bell mouth shape, on horn mouth, have multiple passages 9, ultrasonic-frequency power supply 13 is connected with ultrasonic transducer 2, on first order ultrasonic amplitude transformer 4, have hoop water-cooled through hole 5, water-cooling system 14 is connected with water-cooled through hole 5 by pipeline, ultrasonic transducer 2, first order ultrasonic amplitude transformer 4, the center of second level ultrasonic amplitude transformer 6 and ultrasound emission end 8 has concentric axis through-hole 3, conducting rod 1 is positioned at axis through-hole 3, and not with ultrasonic transducer 2, first order ultrasonic amplitude transformer 4, second level ultrasonic amplitude transformer 6 and ultrasound emission end 8 contact, the two poles of the earth of the source of welding current 15 are connected with conducting rod 1 and workpiece to be welded 12 respectively by cable, conducting rod 1 is hollow, consumable electrode 10 is through conducting rod 1 inside, between consumable electrode 10 and workpiece to be welded 12, form welding arc 11.The horn mouth top external diameter of described ultrasound emission end 8 is identical with second level ultrasonic amplitude transformer 6 external diameters.Described first order ultrasonic amplitude transformer 4 and the amplification coefficient of second level ultrasonic amplitude transformer 6 are all between 6～10.Described first order ultrasonic amplitude transformer 4 is not identical with second level ultrasonic amplitude transformer 6 cross section sizes.
Embodiment 2
The device of the present embodiment is identical with embodiment 1, and its difference is that the electrode adopting is non-melt electrode, and conducting rod 1 is solid electric pole, and non-melt electrode is embedded in conducting rod 1 below and is closely connected with it.
The mechanical oscillation that produced by transducer, first after first order ultrasonic amplitude transformer Amplitude amplification, then enter the second level and amplify, and radiate with ultrasonic wave form by the ultrasound emission end of concave surface horn mouth shape, can realize larger ultrasonic energy and import arc space into.By have the passage of some on ultrasound emission end, can effectively improve the problem of welding protection effect deficiency.
The signal of telecommunication of ultrasonic-frequency power supply is converted to mechanical oscillation by transducer, because the mechanical oscillation of transducer are less, adopt two-stage ultrasonic variable amplitude bar that Amplitude amplification is arrived to 25-250 μ m, finally vibrate through ultrasound emission end and import welding arc into, said apparatus can be worked at 15kHz under the ultrasonic vibration of 2MHz.The protection gas of welding process flows into by the welding tip being attached on the ultrasonic transformer of the ultrasonic wave second level, through passage and the peripheral and then covering welding region of transmitting terminal.The input power of ultrasonic-frequency power supply can be at 1W to regulating continuously between 1000W.Successively start the source of welding current and ultrasonic-frequency power supply, under applicable welding parameter and ultrasound parameter, carry out welding process.Because ultrasound emission end area is much larger than electrode and conducting rod face area, in addition because the bell mouth shape transmitting terminal sound focusing ability of similar conical surface design is stronger, the ultrasonic energy that therefore acts on electric arc by the direct radiant output of transmitting terminal is all being improved largely aspect power and energy density.In consumable electrode vertical position welding engineer testing, contrast does not add ultrasonic, adding ultrasonic rear spatter and flue dust obviously weakens, droplet transfer track becomes straight line from common parabola, molten drop transition frequency is obviously accelerated, welding process stable and uniform, and weld penetration increases, shaping surface uniformity, welding efficiency and quality are all improved.
The aerosphere type high power altrasonic transducer that arc welding is used to ultrasonic electric, because the acoustic impedance of transducer and the acoustic impedance of gas differ greatly.Thereby there is serious impedance mismatch problem.In order to improve acoustic matching, improve the radiation efficiency of aerosphere type ultrasonic transducer, adopt at present solution to have two kinds: one is to utilize multi-layer Matched plate or half-wavelength matching layer, to improve the radiation efficiency of air transducer; The 2nd, utilize large vibration radiant panel, play the effect of impedance matching.For multi-layer Matched plate transducer, due to problems such as the multiple reflections of sound wave and the selections of matching materials, limit it and applied widely.
Extensional vibration sandwich transducer and the two-stage ultrasonic transformer with bell mouth shape transmitting terminal are formed to combined type transducer, utilize the feature such as low radiation impedance, large radiation area of high-efficiency high-power and the particular transmission end of extensional vibration transducer, can effectively overcome in existing ultrasonic electric welding technology acoustic radiation force little, a little less than restoring force, the problem such as arc stability is poor.
Claims (5)
1. a ultrasonic electric arc composite welding apparatus, comprise conducting rod (1), ultrasonic transducer (2), first order ultrasonic amplitude transformer (4), welding tip (7), consumable electrode (10), ultrasonic-frequency power supply (13), water-cooling system (14) and the source of welding current (15), it is characterized in that: also comprise second level ultrasonic amplitude transformer (6) and ultrasound emission end (8), ultrasonic transducer (2) connects first order ultrasonic amplitude transformer (4), first order ultrasonic amplitude transformer (4) connects second level ultrasonic amplitude transformer (6), second level ultrasonic amplitude transformer (6) connects ultrasound emission end (8), ultrasound emission end (8) coated outside has welding tip (7), the lower end of ultrasound emission end (8) is bell mouth shape, on horn mouth, have multiple passages (9), ultrasonic-frequency power supply (13) is connected with ultrasonic transducer (2), water-cooling system (14) is connected with the water-cooled through hole (5) on first order ultrasonic amplitude transformer (4), ultrasonic transducer (2), first order ultrasonic amplitude transformer (4), the center of second level ultrasonic amplitude transformer (6) and ultrasound emission end (8) has concentric axis through-hole (3), conducting rod (1) is positioned at axis through-hole (3), and not with ultrasonic transducer (2), first order ultrasonic amplitude transformer (4), second level ultrasonic amplitude transformer (6) and ultrasound emission end (8) contact, the two poles of the earth of the source of welding current (15) are connected with conducting rod (1) and workpiece to be welded (12) respectively, conducting rod (1) is hollow, consumable electrode (10) is through conducting rod (1) inside, between consumable electrode (10) and workpiece to be welded (12), form welding arc (11).
2. the ultrasonic electric arc composite welding apparatus of one as claimed in claim 1, is characterized in that: the horn mouth upper end external diameter of described ultrasound emission end (8) is identical with second level ultrasonic amplitude transformer (6) external diameter.
3. the ultrasonic electric arc composite welding apparatus of one as claimed in claim 1, is characterized in that: described first order ultrasonic amplitude transformer (4) and the amplification coefficient of second level ultrasonic amplitude transformer (6) are all between 6～10.
4. the ultrasonic electric arc composite welding apparatus of one as claimed in claim 1, it is characterized in that: described consumable electrode (10) or when the non-melt electrode (16), conducting rod (1) is solid electric pole, and non-melt electrode is embedded in conducting rod (1) below and is closely connected with it.
5. the ultrasonic electric arc composite welding apparatus of the one as described in claim 1 or 3, is characterized in that: described first order ultrasonic amplitude transformer (4) is not identical with second level ultrasonic amplitude transformer (6) cross section size.
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| CN201410063336.2A CN103785963B (en) | 2014-02-18 | 2014-02-18 | A kind of ultrasonic electric arc composite welding apparatus |
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| CN201410063336.2A CN103785963B (en) | 2014-02-18 | 2014-02-18 | A kind of ultrasonic electric arc composite welding apparatus |
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| CN103785963B CN103785963B (en) | 2016-10-19 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104526174A (en) * | 2014-12-15 | 2015-04-22 | 赵辉 | Ultrasonic plasma arc welding process and device |
| CN106425352A (en) * | 2016-11-08 | 2017-02-22 | 济南豪能创新管理咨询合伙企业（有限合伙） | Amplitude transformer and ultrasonic machining device |
| CN108817621A (en) * | 2018-08-02 | 2018-11-16 | 威海万丰镁业科技发展有限公司 | Low frequency sound field controlling type longitudinal movement electric arc Tig Welding device and method |
| CN109004484A (en) * | 2018-07-16 | 2018-12-14 | 邓秋萍 | A kind of welding method for high-tension cable |
| CN109283683A (en) * | 2018-10-15 | 2019-01-29 | 成都理想境界科技有限公司 | A kind of fibre optic scanner of large vibration amplitude |
| CN109365965A (en) * | 2018-11-23 | 2019-02-22 | 哈尔滨工程大学 | The Welding Molten Drop interim process control equipment and control method coordinated based on the double tungsten electrodes of superaudio pulse |
| CN114260576A (en) * | 2021-12-31 | 2022-04-01 | 东北电力大学 | Ultrasonic-assisted hollow tungsten electrode GTA-laser coaxial hybrid welding system |
| CN114951702A (en) * | 2022-05-20 | 2022-08-30 | 中国航空制造技术研究院 | Ultrasonic-assisted coaxial composite material in-situ additive manufacturing device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN106425352A (en) * | 2016-11-08 | 2017-02-22 | 济南豪能创新管理咨询合伙企业（有限合伙） | Amplitude transformer and ultrasonic machining device |
| CN106425352B (en) * | 2016-11-08 | 2018-06-01 | 济南豪能创新管理咨询合伙企业（有限合伙） | A kind of amplitude transformer and supersonic machining apparatus |
| CN109004484A (en) * | 2018-07-16 | 2018-12-14 | 邓秋萍 | A kind of welding method for high-tension cable |
| CN108817621A (en) * | 2018-08-02 | 2018-11-16 | 威海万丰镁业科技发展有限公司 | Low frequency sound field controlling type longitudinal movement electric arc Tig Welding device and method |
| CN109283683A (en) * | 2018-10-15 | 2019-01-29 | 成都理想境界科技有限公司 | A kind of fibre optic scanner of large vibration amplitude |
| CN109365965A (en) * | 2018-11-23 | 2019-02-22 | 哈尔滨工程大学 | The Welding Molten Drop interim process control equipment and control method coordinated based on the double tungsten electrodes of superaudio pulse |
| CN109365965B (en) * | 2018-11-23 | 2021-01-05 | 哈尔滨工程大学 | Welding molten drop transition control equipment and control method based on superaudio pulse double-tungsten electrode coordination |
| CN114260576A (en) * | 2021-12-31 | 2022-04-01 | 东北电力大学 | Ultrasonic-assisted hollow tungsten electrode GTA-laser coaxial hybrid welding system |
| CN114260576B (en) * | 2021-12-31 | 2023-11-24 | 东北电力大学 | Ultrasonic-assisted hollow tungsten electrode GTA-laser coaxial composite welding system |
| CN114951702A (en) * | 2022-05-20 | 2022-08-30 | 中国航空制造技术研究院 | Ultrasonic-assisted coaxial composite material in-situ additive manufacturing device |
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