CN105643063A - Gas tungsten arc welding system based on near-field ultrasonic levitation technology - Google Patents
Gas tungsten arc welding system based on near-field ultrasonic levitation technology Download PDFInfo
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- CN105643063A CN105643063A CN201610119594.7A CN201610119594A CN105643063A CN 105643063 A CN105643063 A CN 105643063A CN 201610119594 A CN201610119594 A CN 201610119594A CN 105643063 A CN105643063 A CN 105643063A
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- welding
- supersonic generator
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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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/06—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for positioning the molten material, e.g. confining it to a desired area
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Arc Welding In General (AREA)
Abstract
The invention belongs to the technical field of welding and discloses a gas tungsten arc welding system based on a near-field ultrasonic levitation technology. The gas tungsten arc welding system comprises a welding system consisting of a gas tungsten arc welding gun and a welding power supply and an ultrasonic levitation system consisting of an ultrasonic generator and an ultrasonic generator power control box; the ultrasonic generator comprises an transducer and an amplitude-change pole; the ultrasonic generator is used for acting on a welding pool while a gas tungsten arc welding gun welds a workpiece to be welded; and the end part of the amplitude-change pole of the ultrasonic generator is positioned below the welding pool at a welding station except a downward welding station. According to the gas tungsten arc welding system disclosed by the invention, the near-field ultrasonic levitation technology and a gas tungsten arc welding technology are combined, and a relative position of the ultrasonic levitation system and the welding system is specified, so that an electric arc force borne by pool metal and an ultrasonic levitation force are mutually overlapped, the electric arc force and gravity borne by the pool metal reach a balanced state, the flowing of the pool metal under the action of gravity is prevented, and high-efficiency welding and high forming rate of weld joints are realized.
Description
Technical field
The invention belongs to welding technology field, specifically, relate to a kind of tungsten electrode gas based on near-field ultrasound suspension technologyProtection weldering welding system.
Background technology
Large-sized structural parts in key project construction in the world, although form and structure vary, all position welding is connected intoShape technology is the core of large-sized structural parts manufacture always and needs the key technology of capturing badly. When all-position welding, at gravitational fieldUnder effect, very easily cause molten pool metal to trickle downwards, can not ensure the uniformity of appearance of weld. Welding Structure is carried connecting portionGo out load bearing requirements, and welding point is restricted to melting pool shape and size, little molten bath cannot meet requirement of strength, large molten bathCause molten pool metal trickling, cannot meet quality requirement. So, must propose new method and solve all-position welding particularlyThe problem of molten pool metal trickling in the welding post welding processes such as overhead welding, vertical position welding, horizontal position welding.
Inventor finds realizing in process of the present invention, owing to being subject to the limit of the problems such as molten pool metal trickles under Action of Gravity FieldSystem, there are the following problems at present for all-position welding method: the first, in welding process, need to adjust that molten bath is stressed is heated etc. in good time,So current all-position welding mainly adopts manual welding to complete, welding efficiency is low, cannot meet Production requirement; Secondly,Molten pool metal trickles downwards, is easy to occur various weld defects, and appearance of weld is poor; The 3rd, in order to prevent molten pool metalTrickling downwards, pool size is restricted, and can only adopt less welding conditions, has had a strong impact on the all-position welding of large molten bathThe research and development of method.
It is to utilize the acoustic radiation pressure of high strength sound field generation to carry out the gravity of balance object that near-field ultrasound suspends, and makes the thing in sound fieldBody suspends. With respect to methods such as magnetic, static and pneumatic suspension, near-field ultrasound suspension process to by suspension material without spyDifferent requirement, and structure is relatively simple, is convenient to implement.
Summary of the invention
The invention provides a kind of gas tungstun arc welding welding system based on near-field ultrasound suspension technology, by near field ultrasound suspendingTechnology is applied to gas tungstun arc welding process, utilizes sound field to suspend and solves in all-position welding works such as horizontal position welding, vertical position welding, overhead weldingIn the welding process of position, the molten pool metal technical problem of trickling downwards, can improve welding efficiency and appearance of weld rate, realizes high-qualityThe welding of amount gas tungstun arc welding.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
A gas tungstun arc welding welding system based on near-field ultrasound suspension technology, comprises welding system and ultrasound suspending systemSystem, described welding system comprises gas tungstun arc welding welding gun and the source of welding current, described ultrasound suspending system comprises that ultrasonic wave sends outRaw device and supersonic generator power controling box, described supersonic generator comprises transducer and ultrasonic transformer; Described ultrasonic wave is sent outRaw device is used for treating in welder's part welds and acting on welding pool at described gas tungstun arc welding welding gun, and described inThe ultrasonic transformer end of supersonic generator is positioned at below welding pool in the time of the welding post except downhand welding, and molten pool metal is subject toTo ultrasonic radiation pressure and the gravity that molten pool metal is subject to of making a concerted effort to be greater than of arc pressure.
Wherein, the long-pending welding pool surface area that is greater than of the ultrasonic transformer end cross-sectional of described supersonic generator.
Wherein, the ultrasonic transformer end coated of described supersonic generator has high-temperaure coating.
Wherein, between the rifle mouth axis of the ultrasonic transformer axis of described supersonic generator and described gas tungstun arc welding welding gunAngle is 10-80 degree.
Wherein, the ultrasonic transformer axis of described supersonic generator and surface of the work to be welded through the tangent plane at welding pool center itBetween angle be 30-90 degree.
Wherein, the relative position of described supersonic generator and described gas tungstun arc welding welding gun keeps solid in welding processFixed constant.
Wherein, the distance between ultrasonic transformer end and the welding pool of described supersonic generator is 300um-10mm.
The invention has the beneficial effects as follows:
The invention provides a kind of gas tungstun arc welding welding system based on near-field ultrasound suspension technology, near-field ultrasound is outstandingFloating technology combines with gas tungstun arc welding technology, and relative with workpiece to be welded to ultrasound suspending system, welding systemPosition comprises that distance, angle etc. have made specification, and arc force and ultrasonic suspending force are cooperatively interacted preferably, thus and molten bathThe gravity that metal is subject to reaches poised state, prevents that molten pool metal from trickling problem occurring under Action of Gravity Field, and the present invention can be realThe full position high efficiency of existing gas tungstun arc welding is welded, and has improved the formability of weld seam.
Brief description of the drawings
Fig. 1 is the structural representation of the gas tungstun arc welding welding system based on near-field ultrasound suspension technology.
In figure: 1. workpiece to be welded, 2. Work fixing device to be welded, 3. gas tungstun arc welding welding gun, the 4. fixing dress of welding gunPut, the 5. source of welding current, 6. movable dolly, 7. supersonic generator, 8. supersonic generator fixture, 9. ultrasonicWave producer power controling box.
Detailed description of the invention
Taking the welding post of horizontal position welding, as example, the present invention is described in further detail below, and following examples can make this specialtyTechnical staff more fully understands the present invention, but does not limit the present invention in any way.
As shown in Figure 1, the present embodiment provides a kind of welding of the gas tungstun arc welding based on near-field ultrasound suspension technology to beSystem, mainly comprises welding system and ultrasound suspending system. Welding system and ultrasound suspending system cooperatively interact, synchronous working,Welding system is treated welder's part 1 and is welded, and electric arc thermal source constantly fusing workpiece 1 to be welded forms welding pool, utilizes simultaneouslyUltrasound suspending system makes supersonic wave suspended masterpiece for molten pool metal, prevents molten pool metal outwards trickling under Action of Gravity Field, makesMolten pool metal is normal freezing in welding pool.
Workpiece to be welded 1 in the present embodiment is Q345 steel plate, and thickness is 8mm, solid by workpiece to be welded in welding processDetermine device 2 and keep fixing.
Welding system comprises gas tungstun arc welding welding gun 3, welding gun fixture 4 and the source of welding current 5. Tungsten electrode gas shieldWeldering welding gun 3 connecting welding power supplys 5, and be fixed on movable dolly 6 by welding gun fixture 4. Tungsten electrode gas shieldWeldering welding gun 3 diameters are 10mm, and tungsten electrode diameter is 3.2mm, and arc length is 1.5mm. Gas tungstun arc welding welding gun 3Carry out horizontal position welding with its nozzle-axis perpendicular to the angle on workpiece to be welded 1 surface.
Ultrasound suspending system comprises supersonic generator 7, supersonic generator fixture 8 and the control of supersonic generator power supplyCase 9 processed, wherein supersonic generator 7 comprises transducer and ultrasonic transformer, transducer is ultrasonic energy by electric energy conversion, luffingBar increases amplitude of ultrasonic. The power of supersonic generator 7 and amplitude should ensure closing of ultrasonic radiation pressure and arc pressurePower is greater than the gravity that molten pool metal is subject to, in specific implementation process, and the power of supersonic generator 7 and the choosing of ultrasonic amplitudeSelect according to concrete pool size and select. Supersonic generator 7 connects supersonic generator power controling box 9, and logicalCrossing supersonic generator fixture 8 is fixed on same movable dolly 6. The power of supersonic generator 7 is 900W,Ultrasonic amplitude is 30um, and the ultrasonic transformer end diameter of supersonic generator 7 is 10mm. The ultrasonic transformer of supersonic generator 7End cross-sectional is long-pending should be greater than welding pool surface area, can ensure that so the inner all metals in molten bath are all in supersonic generatorWithin the 7 ultrasonic radiation pressure influence scopes of sending. The ultrasonic transformer end coated of supersonic generator 7 has high-temperaure coating,Melt or be out of shape because of the high temperature of welding arc to prevent ultrasonic transformer end. In the present embodiment, supersonic generator 7Ultrasonic transformer in welding pool below, and angle between the ultrasonic transformer axis of supersonic generator 7 and workpiece to be welded 1 surfaceDegree is 45 degree; Distance between ultrasonic transformer end and the welding pool of supersonic generator 7 is 10mm, and this is because this realityExecute the ultrasonic acoustic radiation pressure maximum at 10mm place, distance ultrasonic transformer end in example.
Movable dolly 6 drives gas tungstun arc welding welding gun 3 and supersonic generator 7 to move simultaneously, tungsten electrode gasProtection weldering welding gun 3 keeps immobilizing with the relative position of supersonic generator 7 in welding process, and movable dolly 6 existsIn welding process, move along the direction of vertical paper. In the present embodiment, ultrasonic transformer axis and the tungsten electrode of supersonic generator 7Angle between the nozzle-axis of gas protecting welding gun 3 is 45 degree.
Usually, the angle between the ultrasonic transformer axis of supersonic generator 7 and the nozzle-axis of gas tungstun arc welding welding gun 3Degree is within the scope of 10-80 degree. In the process welding pool on the ultrasonic transformer axis of supersonic generator 7 and workpiece to be welded 1 surfaceAngle between the tangent plane of the heart is 30-90 degree. The ultrasonic radiation pressure sending due to the ultrasonic transformer end of supersonic generator 7Compared with strong position generally apart from supersonic generator 7 end 300um-10mm, the change of supersonic generator 7 of the present inventionDistance between width boom end and welding pool is selected within the scope of 300um-10mm. The concrete data of above parameter are selectedIn actual condition, determine according to the ultrasonic transformer end size of pool size and supersonic generator 7.
Supersonic generator 7 treats at gas tungstun arc welding welding gun 3 that in welder's part 1 welds, to act on welding moltenPond, cooperatively interacts arc force and ultrasonic suspending force, thereby reaches poised state with the gravity that molten pool metal is subject to. Except downhand weldingOutward, in the time of the welding post of overhead welding, vertical position welding or horizontal position welding, the ultrasonic transformer end of supersonic generator 7 of the present invention all should be positioned atWelding pool below.
The present embodiment welding process is: workpiece 1 to be welded is fixed on Work fixing device 2, and workpiece 1 to be welded was weldingIn journey, keep motionless. Gas tungstun arc welding welding gun 3 and supersonic generator 7 are passed through to welding gun fixture 4 and ultrasonic waveGenerator fixture 8 is fixed on movable dolly 6. Start the source of welding current 5, electric arc produces, and starts movable simultaneouslyDolly 6 and supersonic generator power controling box 9. Along with hanging down in gas tungstun arc welding welding gun 3 and supersonic generator 7 edgesDirectly, in the direction motion of paper, electric arc thermal source constantly fusing workpiece 1 to be welded forms new welding pool, supersonic wave suspended masterpieceFor molten pool metal, prevent molten pool metal outwards trickling under Action of Gravity Field, make molten pool metal normal freezing in molten bath, shapeBecome the good weld seam of outward appearance. Until welding finishes, stop movable dolly 6, close the source of welding current 5 and supersonic generatorPower controling box 9.
Although by reference to the accompanying drawings the preferred embodiments of the present invention are described above, the present invention is not limited to above-mentionedDetailed description of the invention, above-mentioned detailed description of the invention is only schematically, is not restrictive, the common skill of this areaArt personnel are under enlightenment of the present invention, not departing from the scope situation that aim of the present invention and claim protect, all rightMake the concrete conversion of a lot of forms, within these all belong to protection scope of the present invention.
Claims (7)
1. the gas tungstun arc welding welding system based on near-field ultrasound suspension technology, is characterized in that, comprises welding systemThe ultrasound suspending system of unifying, described welding system comprises gas tungstun arc welding welding gun and the source of welding current, described ultrasound suspending systemTurnkey is drawn together supersonic generator and supersonic generator power controling box, and described supersonic generator comprises transducer and luffingBar; Described supersonic generator is for treating in welder's part welds and act at described gas tungstun arc welding welding gunWelding pool, and the ultrasonic transformer end of described supersonic generator is positioned under welding pool in the time of the welding post except downhand weldingSide, makes ultrasonic radiation pressure that molten pool metal is subject to and the gravity that molten pool metal is subject to of making a concerted effort to be greater than of arc pressure.
2. a kind of gas tungstun arc welding welding system based on near-field ultrasound suspension technology according to claim 1, itsBe characterised in that the long-pending welding pool surface area that is greater than of ultrasonic transformer end cross-sectional of described supersonic generator.
3. a kind of gas tungstun arc welding welding system based on near-field ultrasound suspension technology according to claim 1, itsBe characterised in that, the ultrasonic transformer end coated of described supersonic generator has high-temperaure coating.
4. a kind of gas tungstun arc welding welding system based on near-field ultrasound suspension technology according to claim 1, itsBe characterised in that, between the rifle mouth axis of the ultrasonic transformer axis of described supersonic generator and described gas tungstun arc welding welding gunAngle is 10-80 degree.
5. a kind of gas tungstun arc welding welding system based on near-field ultrasound suspension technology according to claim 1, itsBe characterised in that, the ultrasonic transformer axis of described supersonic generator and surface of the work to be welded through the tangent plane at welding pool center itBetween angle be 30-90 degree.
6. a kind of gas tungstun arc welding welding system based on near-field ultrasound suspension technology according to claim 1, itsBe characterised in that, it is solid that the relative position of described supersonic generator and described gas tungstun arc welding welding gun keeps in welding processFixed constant.
7. a kind of gas tungstun arc welding welding system based on near-field ultrasound suspension technology according to claim 1, itsBe characterised in that, the distance between ultrasonic transformer end and the welding pool of described supersonic generator is 300um-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610119594.7A CN105643063A (en) | 2016-03-03 | 2016-03-03 | Gas tungsten arc welding system based on near-field ultrasonic levitation technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610119594.7A CN105643063A (en) | 2016-03-03 | 2016-03-03 | Gas tungsten arc welding system based on near-field ultrasonic levitation technology |
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| CN105643063A true CN105643063A (en) | 2016-06-08 |
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| CN201610119594.7A Pending CN105643063A (en) | 2016-03-03 | 2016-03-03 | Gas tungsten arc welding system based on near-field ultrasonic levitation technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814519A (en) * | 2019-10-18 | 2020-02-21 | 西安交通大学 | Hairpin type joint weld seam shape control system for preventing couch below molten pool based on ultrasonic wave field standing |
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| CN101850462A (en) * | 2010-05-06 | 2010-10-06 | 哈尔滨工业大学 | Ultrasonic welding method of Al/Ti dissimilar metal TIG (Tungsten Inert Gas) electrical arc micro-melting brazing and following welding |
| CN104923890A (en) * | 2015-07-20 | 2015-09-23 | 青岛理工大学 | Ultrasonic auxiliary argon arc welding method and auxiliary device with adjustable sound source incidence angle and position |
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2016
- 2016-03-03 CN CN201610119594.7A patent/CN105643063A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101850462A (en) * | 2010-05-06 | 2010-10-06 | 哈尔滨工业大学 | Ultrasonic welding method of Al/Ti dissimilar metal TIG (Tungsten Inert Gas) electrical arc micro-melting brazing and following welding |
| CN104923890A (en) * | 2015-07-20 | 2015-09-23 | 青岛理工大学 | Ultrasonic auxiliary argon arc welding method and auxiliary device with adjustable sound source incidence angle and position |
Non-Patent Citations (2)
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| 孙清洁: "超声-TIG电弧复合焊接方法及电弧行为研究", 《中国博士学位论文全文数据库工程科技I辑》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814519A (en) * | 2019-10-18 | 2020-02-21 | 西安交通大学 | Hairpin type joint weld seam shape control system for preventing couch below molten pool based on ultrasonic wave field standing |
| CN110814519B (en) * | 2019-10-18 | 2021-08-06 | 西安交通大学 | Hairpin type connector weld seam shape control system for preventing molten pool from collapsing based on ultrasonic wave field holding |
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Application publication date: 20160608 |
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