CN205085533U - Fenestrate plasma arc weld device is assisted to supersound - Google Patents
Fenestrate plasma arc weld device is assisted to supersound Download PDFInfo
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- CN205085533U CN205085533U CN201520921328.7U CN201520921328U CN205085533U CN 205085533 U CN205085533 U CN 205085533U CN 201520921328 U CN201520921328 U CN 201520921328U CN 205085533 U CN205085533 U CN 205085533U
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Abstract
The utility model relates to a fenestrate plasma arc weld device is assisted to supersound. The device is under the plasma arc weld condition, through the inseparable coupled linking of the tungsten utmost point in ultrasonic amplitude transformer and the plasma arc welder, with power ultrasonic vibration by tungsten utmost point direct action to the plasma arc, reinforce heat - masterpiece of plasma arc and use. Simultaneously, some ultrasonic vibration energy pass through to influence the heat transfer and the action of flow in molten bath during plasma arc transmits the molten bath on the work piece. Because the effect of two above aspects is compared with ordinary plasma arc weld technology, the utility model discloses a plasma arc energy density and deflection further obtain improving, have improved plasma arc's perforation ability, have widened the technological parameter nargin of acquireing high -quality welding seam. Weld that back gained welded joint tissue is fine and close, gas is appeared thoroughly, grain refinement, alloying element distribute evenly, the mechanical properties of joint obtains the improvement.
Description
Technical field
The utility model relates to the plasma arc welding (PAW) connection device of a kind of ultrasonic wave added perforation, belongs to high efficiency plasma arc welding technology field.
Background technology
PLASMA ARC WELDING (PlasmaArcWelding is called for short PAW) is a kind of advanced welding technique of high-energy-density.For medium plate, when square groove, perforate PLASMA ARC WELDING can through welding, an one side welding with back formation.In conventional plasma arc welding (PAW) termination process, aperture is to process conditions sensitive; Aperture just may be caused to close for the minor fluctuations of technological parameter or molten bath subsides, and narrow, the adjustable nargin of reasonable standard parameter area obtaining good joint quality is little.
Power ultrasonic has that frequency is high, penetration capacity is strong and can change the features such as physical property.There is the application technology of ultrasonic vibration in arc welding at present, disclosed in Chinese patent CN101219499A " welding method of a kind of ultrasonic wave and non-melt pole electrical arc compound ", by ul-trasonic irradiation on TIG electric arc, TIG electric arc there occurs obvious contraction, illustrates that Under Ultrasonic Vibration kinetic energy effectively improves the energy density of electric arc.But non-melt electrode is embedded in ultrasonic transformer in this utility model, inconvenience dismounting, replacing, limit the application of the method; TIG electric arc works in thermal conductance weldering (fusing into type) pattern, can not produce aperture in molten bath.In addition, Chinese patent CN1583340A disclosed " a kind of titanium alloy welding method based on arc-ultrasonic ", utilizes high frequency pulse current welding electric current to implement high frequency modulated to electric arc, utilizes the variable resistance load characteristic of electric arc to motivate arc-ultrasonic.Ultrasonic vibration, as ultrasonic occurring source, is acted on welding pool by electric arc.But this electric arc that utilizes is as the method for ultrasonic occurring source, and requiring welding current to reach is enough to produce the frequency of ultrasonic vibration, very high to the requirement of the source of welding current itself, bad adaptability; Meanwhile, electric arc works in thermal conductance weldering (fusing into type) pattern, can not produce aperture, by the conduction of heat penetration mother metal of molten pool metal, realize through welding in molten bath.Therefore the welding of thin plate (0.5 ~ below 2.5mm), the welding of each layer later of multilayer welding backing run and the welding of angle welding is mainly used in.
Utility model content
The utility model is intended to overcome the deficiencies in the prior art, the plasma arc welding (PAW) connection device providing a kind of ultrasonic wave added to bore a hole and technique, be connected with the close-coupled of tungsten electrode in plasma (welding) torch by ultrasonic amplitude transformer, power ultrasonic vibration is applied directly on plasma arc by tungsten electrode, ultrasound parameter mates with welding condition item, improves the heat-power effect of plasma arc and the heattransfer and fluid flow behavior in molten bath.Reach the piercing capability improving plasma arc, the object widening applicable technological parameter.
For realizing above object, the utility model by the following technical solutions:
A kind of plasma arc welding (PAW) connection device of ultrasonic wave added perforation, comprise ultrasonic vibration and conduction unit, described ultrasonic vibration and conduction unit comprise the supersonic generator, ultrasonic transducer and the ultrasonic transformer that are connected successively, and described ultrasonic transducer is fixedly connected with one end of ultrasonic transformer by connector.The other end of described ultrasonic transformer arranges cavity, arranges the gripping section of tungsten electrode in described cavity, and described ultrasonic transformer is connected by detachable mechanism close-coupled with the gripping section of tungsten electrode, is provided with insulating materials between described ultrasonic transformer and the gripping section of tungsten electrode.The non-clamping section of described tungsten electrode is connected with PLASMA ARC WELDING power supply, the non-clamping section outer setting plasma welding gun body of described tungsten electrode.
The workflow of the utility model welder is as follows: first, and industrial-frequency alternating current is converted to superaudible alternating current after supersonic generator.Subsequently, superaudible alternating current is converted into ultrasonic mechanical vibration through ultrasonic transducer.Through focusing and the amplification of ultrasonic transformer, form power ultrasonic vibration, and be delivered on tungsten electrode.And then article on plasma arc, welding pool and aperture generation effect.
The advantage designed that is of coupled connections of ultrasonic transformer and tungsten electrode is, the connection of tungsten electrode and ultrasonic transformer can be dismantled, and can regulate the tungsten electrode of tungsten electrode extension or replacing different model as required.Therefore, good adaptability is had to the welding gun of different model and the selection of different welding conditions.
Be provided with between ultrasonic transformer and tungsten electrode a kind of have insulation, thermal insulation, can the material of conducted power ultrasonic vibration, realize effectively being separated of ultrasonic circuit and plasma arc welding (PAW) connection circuit, the high temperature of tungsten electrode can not be delivered on ultrasonic transformer simultaneously, guarantees that ultrasonic transformer is in normal working temperature scope.
Described tungsten electrode, through particular design, can assemble with plasma (welding) torch rifle body, realize PLASMA ARC WELDING.
On the basis of plasma (welding) torch, Butt welding gun carries out Design & reform, is arranged on the outside of tungsten electrode non-clamping section.The length of tungsten electrode, diameter can carry out coupling according to welding procedure needs and welding gun rifle body and select.Can ensure on the basis that plasma (welding) torch normally works, by tungsten electrode by power ultrasonic conduct vibrations on plasma arc.
Preferably, described tungsten electrode gripping section is bolted in described ultrasonic transformer cavity.Guaranteed output ultrasonic vibration is delivered on tungsten electrode by this syndeton.
Preferred further, crack in the both sides of described ultrasonic transformer cavity, described bolt is two, and two bolts are each passed through both sides and crack, and with nut screw connection, will be positioned at the tungsten electrode gripping section clamping of ultrasonic transformer cavity.Guarantee that tungsten electrode gripping section clamps by ultrasonic transformer.
Preferably, tungsten electrode material is tungsten alloy, and preferred material is cerium tungsten alloy or thorium tungsten alloy.
Preferably, described ultrasonic transducer adopts the piezo-electric type ultrasonic transducer of piezoelectric ceramics and front and back alloy cover plate composition.Described ultrasonic transformer can aluminium alloy, titanium alloy or steel alloy.
The utility model also relates to the PLASMA ARC WELDING technique of a kind of ultrasonic wave added perforation, and the plasma arc welding (PAW) connection device that described technique uses described ultrasonic wave added to bore a hole welds, and is realized by following steps:
(1) industrial-frequency alternating current is converted to superaudible alternating current after supersonic generator, is converted into ultrasonic mechanical vibration through ultrasonic transducer.
(2) energy of ultrasonic transducer carries out focusing on and amplifying by ultrasonic transformer, is vibrated by the amplification of ultrasonic transformer and the power ultrasonic of focusing formation certain frequency and amplitude.By designing ultrasonic vibration frequency that the overall dimensions of ultrasonic transformer guarantees that tungsten electrode exports, power is required size.
(3) ultrasonic transformer and tungsten electrode close-coupled, the power ultrasonic vibration of ultrasonic transformer is sent on tungsten electrode by gripping section.
(4) be connected with the non-clamping section of tungsten electrode by PLASMA ARC WELDING power supply, non-clamping section plasma welding gun body being arranged on tungsten electrode is outside.Carry out mating length, the diameter of selecting tungsten electrode according to welding procedure needs and welding gun rifle body.
(5), during welding, Plasma Welding power supply input welding current, plasma arc rifle body input ion-gas, tungsten electrode produces plasma arc, and acts on plasma arc, welding pool and aperture by the ultrasonic vibration that ultrasonic transformer transmits.
In described step (1), supersonic generator power output is 1 ~ 2000W.
In described step (2), the power ultrasonic vibration frequency after amplification is 15KHz ~ 100KHz, and amplitude is 10 ~ 100 μm.
In described step (5), welding current is 50 ~ 500A.
In described step (5), ion-gas kind is argon gas, argon helium gas mixture, and ion-gas flow is 1 ~ 10L/min.
In the utility model, welding condition (welding current, speed of welding, ion-gas flow) and ultrasound parameter (frequency, amplitude, power) reach coupling matching in an optimized way, to guarantee welding process stability and high efficiency, obtain good quality solder joints.
The PLASMA ARC WELDING technique of this kind of ultrasonic wave added perforation can realize the welding of the material such as stainless steel, low-alloy high-strength steel.
The beneficial effects of the utility model are: the utility model is on the basis of plasma (welding) torch, Butt welding gun carries out Design & reform, can ensure on the basis that plasma (welding) torch normally works, by redesign tungsten electrode by power ultrasonic conduct vibrations on plasma arc.After applying power ultrasonic vibration, enhance the heat-power effect of plasma arc, arc column diameter is further compressed, and deflection also can improve.Power ultrasonic vibration is simultaneously delivered in molten bath by electric arc, and under the effect of power ultrasonic, aperture and molten bath have stronger adaptability.The plasma arc welding process that power ultrasonic vibration is assisted is more stable, has also widened the welding condition nargin forming stable perforation.
(1) advantage designed that is of coupled connections of the utility model tungsten electrode and ultrasonic transformer is, the connection of tungsten electrode and ultrasonic transformer can be dismantled, and can regulate the tungsten electrode of tungsten electrode extension or replacing different model as required.Therefore, the selection of the utility model to the welding gun of different model and different welding conditions has good adaptability.Plasma arc welding (PAW) connection circuit and power ultrasonic circuit disconnected from each other, parameter adjustment can be carried out respectively.
(2) in the utility model, the effect of power ultrasonic vibration is mainly reflected in, and is vibrated by power ultrasonic, increases the compression degree of electric arc radial direction, improve the deflection of electric arc, the heat of electric arc is more concentrated, improves the stability of electric arc, enhances the heat-power effect of plasma arc.During experimental measurements display employing identical large welding current during welding, after applying power ultrasonic vibration, energy density can improve about 30%.Equal thickness workpiece, forms the required welding current of perforation and can decline 20% ~ 30% after applying ultrasonic vibration.
(3) the utility model has that plasma arc welding (PAW) welding process is stable, appearance of weld good, and improves the piercing capability of plasma arc and aperture stablizes hold facility.
(4) by mating with the optimal coupling of ultrasound parameter (frequency, amplitude, power) welding condition (welding current, speed of welding, ion-gas flow), the welding condition scope forming perforation has been widened.
(5) ultrasonic vibration is by arcing in molten bath and aperture hole wall, and in postwelding gained weld seam, stomatal number almost disappears completely, joint microstructure grain refinement, and alloying component is evenly distributed, and improves the military service performance of welding point.Decrease welding stress and distortion.Improve welding quality and efficiency.
Accompanying drawing explanation
Fig. 1 is the plasma arc welding (PAW) connection device schematic diagram of the utility model ultrasonic wave added perforation.
In figure: 1, ultrasonic transducer, 2, ultrasonic transformer, 3, tungsten electrode, 4, plasma welding gun body, 5, plasma arc, 6, workpiece, 7, PLASMA ARC WELDING power supply, 8, supersonic generator.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As shown in Figure 1, a kind of plasma arc welding (PAW) connection device of ultrasonic wave added perforation, comprise ultrasonic vibration and conduction unit, described ultrasonic vibration and conduction unit comprise the supersonic generator 8, ultrasonic transducer 1 and the ultrasonic transformer 2 that are connected successively, and ultrasonic transducer 1 is by one end compact siro spinning technology of stud and ultrasonic transformer 2.The other end end of ultrasonic transformer 2 is cut open and in central openings to clamp tungsten electrode 3, adopt two hexagon socket head cap screws fastening, making can conducted power ultrasonic vibration between tungsten electrode 3 and ultrasonic transformer 2 simultaneously.And apply between a kind of have insulation, thermal insulation, can the material of conducted power ultrasonic vibration, realize effectively being separated of ultrasonic circuit and plasma arc welding (PAW) connection circuit, the high temperature of tungsten electrode can not be delivered on ultrasonic transformer simultaneously, guarantees that ultrasonic transformer is in normal working temperature scope.
The non-clamping section of tungsten electrode 3 is connected with PLASMA ARC WELDING power supply 7, the non-clamping section outer setting plasma welding gun body 4 of tungsten electrode 3.
The present embodiment also relates to the PLASMA ARC WELDING technique of a kind of ultrasonic wave added perforation, uses the plasma arc welding (PAW) connection device of the perforation of ultrasonic wave added as shown in Figure 1 to weld, is realized by following steps:
(1) industrial-frequency alternating current is converted to superaudible alternating current after supersonic generator, supersonic generator 8 is input to after converting power current to supersonic frequency electric current in ultrasonic transducer 1 and produces mechanical ultrasonic vibration, and supersonic generator power output is 1 ~ 2000W.
(2) energy of ultrasonic transducer carries out focusing on and amplifying by ultrasonic transformer, and by the amplification of ultrasonic transformer 2 with to focus on forming frequency be 15KHz ~ 100KHz, amplitude is the power ultrasonic vibration of 10 ~ 100 μm.By designing ultrasonic vibration frequency that the overall dimensions of ultrasonic transformer guarantees that tungsten electrode exports, power is required size.
(3) other end end of ultrasonic transformer 2 is cut open and in central openings to clamp tungsten electrode 3, adopt two hexagon socket head cap screws fastening simultaneously, make tungsten electrode 3 and ultrasonic transformer 2 close-coupled, the power ultrasonic vibration of ultrasonic transformer 2 is sent on tungsten electrode 3 by gripping section.
(4) be connected with the non-clamping section of tungsten electrode 3 by PLASMA ARC WELDING power supply 7, non-clamping section plasma welding gun body 4 being arranged on tungsten electrode 3 is outside.Carry out mating length, the diameter of selecting tungsten electrode according to welding procedure needs and welding gun rifle body.
(5) during welding, the welding current that Plasma Welding power supply 7 inputs is 50 ~ 500A, and the ion-gas kind of plasma arc rifle body 4 input is argon gas, argon helium gas mixture, and ion-gas flow is 1 ~ 10L/min.Power ultrasonic vibration is applied on plasma arc 5 by tungsten electrode 3, and is delivered in the molten bath on workpiece 6 by plasma arc 5, to molten bath and aperture generation effect wherein.
The present embodiment is on the basis of plasma (welding) torch, and Butt welding gun carries out Design & reform, can ensure on the basis that plasma (welding) torch normally works, by redesign tungsten electrode by power ultrasonic conduct vibrations on plasma arc.After applying power ultrasonic vibration, enhance the heat-power effect of plasma arc, arc column diameter is further compressed, and deflection also can improve.Power ultrasonic vibration is simultaneously delivered in molten bath by electric arc, and under the effect of power ultrasonic, aperture and molten bath have stronger adaptability.The plasma arc welding process that power ultrasonic vibration is assisted is more stable, has also widened the welding condition nargin forming stable perforation.
The advantage designed that is of coupled connections of the present embodiment tungsten electrode and ultrasonic transformer is, the connection of tungsten electrode and ultrasonic transformer can be dismantled, and can regulate the tungsten electrode of tungsten electrode extension or replacing different model as required.Therefore, the selection of the utility model to the welding gun of different model and different welding conditions has good adaptability.Plasma arc welding (PAW) connection circuit and power ultrasonic circuit disconnected from each other, parameter adjustment can be carried out respectively, widen the technological parameter nargin obtaining quality weld.
In the present embodiment, the effect of power ultrasonic vibration is mainly reflected in, and vibrated by power ultrasonic, increase the compression degree of electric arc radial direction, improve the deflection of electric arc, the heat of electric arc is more concentrated, improves the stability of electric arc, enhances the heat-power effect of plasma arc.During experimental measurements display employing identical large welding current during welding, after applying power ultrasonic vibration, energy density can improve about 30%.Equal thickness workpiece, forms the required welding current of perforation and can decline 20% ~ 30% after applying ultrasonic vibration.
The present embodiment has that plasma arc welding (PAW) welding process is stable, appearance of weld good, and improves the piercing capability of plasma arc and aperture stablizes hold facility.
By mating with the optimal coupling of ultrasound parameter (frequency, amplitude, power) welding condition (welding current, speed of welding, ion-gas flow), widen the welding condition scope forming perforation.
Ultrasonic vibration is by arcing in molten bath and aperture hole wall, and in postwelding gained weld seam, stomatal number almost disappears completely, joint microstructure grain refinement, and alloying component is evenly distributed, and improves the military service performance of welding point.Decrease welding stress and distortion.Improve welding quality and efficiency.
By reference to the accompanying drawings detailed description of the invention of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (5)
1. the plasma arc welding (PAW) connection device of a ultrasonic wave added perforation, it is characterized in that, comprise ultrasonic vibration and conduction unit, described ultrasonic vibration and conduction unit comprise the supersonic generator, ultrasonic transducer and the ultrasonic transformer that are connected successively, and described ultrasonic transducer is fixedly connected with one end of ultrasonic transformer by connector; The other end of described ultrasonic transformer arranges cavity, arranges the gripping section of tungsten electrode in described cavity, and described ultrasonic transformer is connected by detachable mechanism close-coupled with the gripping section of tungsten electrode, is provided with insulating materials between described ultrasonic transformer and the gripping section of tungsten electrode; The non-clamping section of described tungsten electrode is connected with PLASMA ARC WELDING power supply, the non-clamping section outer setting plasma welding gun body of described tungsten electrode.
2. the plasma arc welding (PAW) connection device of a kind of ultrasonic wave added perforation as claimed in claim 1, it is characterized in that, described tungsten electrode gripping section is bolted in described ultrasonic transformer cavity.
3. the plasma arc welding (PAW) connection device of a kind of ultrasonic wave added perforation as claimed in claim 1, it is characterized in that, described ultrasonic transducer adopts the piezo-electric type ultrasonic transducer of piezoelectric ceramics and front and back alloy cover plate composition; Described ultrasonic transformer can aluminium alloy, titanium alloy or steel alloy.
4. the plasma arc welding (PAW) connection device of a kind of ultrasonic wave added perforation as claimed in claim 1, it is characterized in that, tungsten electrode material is tungsten alloy.
5. the plasma arc welding (PAW) connection device of a kind of ultrasonic wave added perforation as claimed in claim 4, it is characterized in that, tungsten electrode material is cerium tungsten alloy or thorium tungsten alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520921328.7U CN205085533U (en) | 2015-11-18 | 2015-11-18 | Fenestrate plasma arc weld device is assisted to supersound |
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| CN201520921328.7U CN205085533U (en) | 2015-11-18 | 2015-11-18 | Fenestrate plasma arc weld device is assisted to supersound |
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| CN205085533U true CN205085533U (en) | 2016-03-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234539A (en) * | 2015-11-18 | 2016-01-13 | 山东大学 | Plasma arc welding device and process for ultrasonic auxiliary perforation |
| CN108339987A (en) * | 2018-03-01 | 2018-07-31 | 常熟理工学院 | The connection method of carbon fibre composite and magnesium alloy materials |
-
2015
- 2015-11-18 CN CN201520921328.7U patent/CN205085533U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234539A (en) * | 2015-11-18 | 2016-01-13 | 山东大学 | Plasma arc welding device and process for ultrasonic auxiliary perforation |
| CN108339987A (en) * | 2018-03-01 | 2018-07-31 | 常熟理工学院 | The connection method of carbon fibre composite and magnesium alloy materials |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160316 Termination date: 20171118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |