CN104384685B - Electrode or packing material push-pull type micro-vibration auxiliary arc welding equipment and method - Google Patents
Electrode or packing material push-pull type micro-vibration auxiliary arc welding equipment and method Download PDFInfo
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- CN104384685B CN104384685B CN201410492669.7A CN201410492669A CN104384685B CN 104384685 B CN104384685 B CN 104384685B CN 201410492669 A CN201410492669 A CN 201410492669A CN 104384685 B CN104384685 B CN 104384685B
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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
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/022—Welding by making use of electrode vibrations
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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
- B23K9/32—Accessories
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- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
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Abstract
The present invention relates to welding technology field, specifically one kind by micro-vibration by acting on electrode or packing material, the transition of molten drop can be accelerated, improve deposition rate, improve the electrode or packing material push-pull type micro-vibration auxiliary arc welding equipment and method of seam organization, it is characterized in that push-pull micro-vibration is provided by vibration source, micro-vibration is applied in electrode cramping body, welding wire supply part or external nozzles by vibrating guide rod, realizes effective stirring to molten bath.The present invention has the advantages that deposition rate is high, heat input is small, tissue is fine and closely woven uniform in welding process, and equipment cost is relatively low in addition, it is easy to accomplish manual operations, is easy to commercial introduction.
Description
Technical field
It is specifically a kind of by the way that micro-vibration is acted on into electrode or filling material the present invention relates to welding technology field
Material, can accelerate the droplet transfer, improve deposition rate, improve the electrode or packing material push-pull type micro-vibration auxiliary arc of seam organization
Welder device and method.
Background technology
It is well known that in traditional and emerging machinery manufacturing industry, gas metal-arc welding (MIG), submerged-arc welding
(SAW), argon tungsten-arc welding（TIG）Welding technology high etc. deposition efficiency or easy to operate navigates in pressure vessel manufacturing, automobile
There is relatively broad application in the field such as it, and when carrying out weld job using such welding technology, to improve welding production efficiency must
So to increase thermal weld stress, the increase of heat input make it that weld seam frozen metal coarse grains, deformation are serious, significantly reduced
The mechanical property and crudy of welding point.Welding field has occurred accelerating molten drop mistake by additionally applying vibration at present
Cross, deposition rate is improved, simultaneously because reducing heat input so that crystal grain obtains a certain degree of refinement, deforms corresponding reduction, such as
A kind of existing patent " welding method and its device of cold metal transfer "（ ZL201110315664.3）, patent content is similar to
TIP TIG, i.e., combined using MAG soldering equipments with two TIG soldering equipments, by making welding wire be pumped along axis, welding can be reduced
Heat input, accelerates the transition of molten drop, but due to being to produce vibration using motor driven rotating disk, so frequency is relatively low, in addition by
In welding wire vibrated along axis, thus it is unsatisfactory to the stirring action effect in molten bath, while the above method may be only available for TIG
Filler wire welding, without reference to welding methods such as MIG, SAW that application is wider, heat input is higher.A kind of and for example patent " machinery
The TIG soldering methods and its device of vibration auxiliary droplet transfer " (201210026693.2), directly draws motor vibrations in the patent
Enter onto welding wire or wire leading pipe, therefore be similarly subjected to the limitation of frequency, the vibration source in patent and welding wire are to depart from shape in addition
State, that is, vibrate contact and simply constantly tap welding wire or wire leading pipe, do not link together, in this case, seal wire
Equivalent to one spring of pipe, according to formulaUnderstand, the vibration frequency of wire leading pipe is certain, only when vibration is touched
When the vibration frequency of head is consistent with wire leading pipe vibration frequency, vibrating effect just can be more satisfactory.It is this in addition to beat also so that setting
The standby life-span is affected, and impracticable.Also have in addition in some patents and employ jig vibration or in welding region
The mode vibrated in addition, these methods are typically all limited by frequency, or component is given a shock the limitation of platform size, only
Suitable for laboratory, it is unfavorable for promoting.Above-mentioned all methods also have a key issue to be as a result of asymmetric conductive
Loop, easily cause arc blow, simultaneously because equipment welding gun part is more complicated, so it is difficult to carrying out handwork.
The content of the invention
The present invention applies symmetrical micro-vibration in the same direction in view of the above-mentioned problems, proposing in electrode or packing material both sides, this
Even if sample generates external magnetic field, it can also cancel out each other, its specific effect is exactly that electrode can along the vibration perpendicular to itself axial direction
To promote electric arc to stir molten bath, welding wire end is even more that can directly contact molten bath when consumable electrode welds, and carries out stirring for adjustable frequency
Mix, this vibrational energy is passed in molten bath by stirring, molten bath is carried out high frequency oscillation, so as to crystal grain thinning, raising connects
Head quality.Vibration also accelerates the transition of molten drop in addition, improves deposition rate, therefore can correspondingly reduce heat input, so
Also certain booster action is played to crystal grain thinning, raising strength of joint.
The purpose of the present invention is realized by following measures：
A kind of electrode or packing material push-pull type micro-vibration aids in arc welding equipment, provided with Arc Welding Power, conducting rod, wire,
Electrode cramping body, welding wire supply part, nozzle, it is characterised in that be additionally provided with push-pull type micro-vibration mechanism, it is described recommend to decline shake
Motivation structure is provided with vibration guide rod, vibration source and vibration power supply, wherein wire connection conducting rod and electrode cramping body or welding wire
Supply part forms welding circuit, vibration guide rod connection vibration source and electrode cramping body, welding wire in push-pull type micro-vibration mechanism
Supply part or external nozzles, vibration source are powered by vibrating with power supply, and the welding wire supply part is ignition tip or wire-feeding pipe；
Magnetism servo-electric motor water-cooling is additionally provided with the vibration guide rod；The vibration source uses vibration frequency range to be shaken for 1KHz ~ 100KHz ultrasound
Dynamic source or electric and magnetic oscillation source or pneumatic straight-line oscillation and motor vibrations vibration source.
In order to ensure the effect of vibration in the present invention, using symmetrical push-pull type vibration mode, have respectively in welding gun both sides
One group of push-pull type micro-vibration mechanism, two groups of push-pull type micro-vibration mechanisms share a set of power supply and power control circuit, make two groups to push away
The work of pull micro-vibration mechanism is synchronous.If vibration source power allows in addition, arc blow influence is smaller, can still use unilateral apply
The form of vibration.
Guide rod is vibrated in the present invention to select high temperature resistant, high-strength insulating material to be made, and it uses screw thread with micro-vibration source
Connection, vibrates the diameter of guide rod between 1mm ~ 5mm, vibration guide rod and electrode cramping body, welding wire supply part or external nozzles
Between using threaded connection.Vibration guide rod can also be realized connection together by multiple component combinations in addition, but need to ensure to insulate,
The final side-to-side vibrations amplitude range for ensureing electrode or welding wire is 10um ~ 150um.
It can be connected in the present invention between conducting rod and electrode cramping body or ignition tip with 2 ~ 4 copper conductors, wire is in
Relaxed state.
Heretofore described magnetism servo-electric motor water-cooling is placed in the outside of nozzle or welding wire supply part, and cooling water bag can be used real
Existing, water bag bag body is made of wear-resistant plastic, is directly contacted with vibration guide rod, because water bag is softer, so not interfering with vibration.
The micro-vibration of push-pull type micro-vibration mechanism of the present invention output can be applied to MIG, SAW welding gun ignition tip or
It on person's nozzle, can also be applied on the tungsten electrode cramping body or nozzle of TIG welding guns, sending for the TIG welderings that fill silk can also be applied to
On fiber tube.
Sealed in the present invention between nozzle and vibration guide rod with elasticity preferably high-temperature plastic, conducting rod and electrode cramping body
Or 2 ~ 4 wires are connected between ignition tip, wire is in relaxed state, does not influence the vibration of electrode cramping body or ignition tip.When
When vibration is applied to external nozzles, welding gun can not limit on direction of vibration.
Present invention additionally comprises a kind of electrode or packing material push-pull type micro-vibration auxiliary arc welding method, step are as follows：
Step 1：Micro-vibration source converts electrical energy into vibrational energy, is delivered on ignition tip, makes at ignition tip through vibrating guide rod
In micro-vibration state,
Step 2：Welding current is transferred to ignition tip from conducting rod through wire, ensures welding circuit conducting, and wire is in pine
Relaxation state, the vibration of ignition tip is not influenceed,
Step 3：Welding major loop is connected, in run-on tab up-igniting electric arc, opens magnetism servo-electric motor water-cooling.
Step 4：After arc stability, Vibration on Start-up source, treat that electrode or welding wire are in good micro- state of shaking, welding gun
It is transferred on workpiece,
Step 5：Under micro-vibration effect, the mode of action in molten bath occurs for arc force and molten drop for electrode or welding wire
Corresponding change, so as to cause the orderly concussion in molten bath, and then crystal grain thinning, welding quality is improved,
Step 6：After welding process, Arc Welding Power is first closed, turns off vibration power supply.
Electrode or packing material push-pull type micro-vibration provided by the invention auxiliary arc welding equipment can according to the material of welding wire,
The regulation of line frequency is entered in size and welding requirements.When desired frequency is relatively low, motor vibrations or Pneumatic straight can be used
Linearly coupled, electric and magnetic oscillation is because frequency range is wider, so can be used for the vibration of low frequency ranges.When desired frequency compared with
Gao Shi, ultrasonic vibration or electric and magnetic oscillation can be used.Vibrate guide rod and electrode cramping body, welding wire supply part or external nozzles
Between with threaded connection, can so ensure vibration effective transmission.Electrode or packing material provided by the invention, which are recommended, to decline
Vibration auxiliary arc welding equipment can also be used in combination with hot-wire device, more can further improve efficiency.
Example is welded as with melt pole electrical arc, the present invention has following remarkable result relative to common arc welding method：(1) reduce
The size of molten drop, reduces impact of the molten drop to welding pool.Because molten drop with small particulate form enters molten bath, be advantageous to
The defects of reducing stomata, incomplete fusion, seam organization is fine and closely woven, and structural homogenity is good.(2) avoid molten drop and excessively absorb arc energy
Measure and overheat molten drop, make electric arc heat be mainly used in heating mother metal, the efficiency of heating surface significantly improves.(3) in the micro- of frequency-adjustable
Under effect of vibration, molten drop transition frequency is accelerated, while molten drop is provided with the kinetic energy perpendicular to packing material axis, can promote to melt
Pond is flowed, and improves weld seam crystallization tissue.(4) equipment is simple, available for jig or manual operations, strong applicability, phase
Substantially reduced than equipment, costs such as the TIP TIG along welding wire axial vibration, be easy to commercial introduction.
Brief description of the drawings：
Accompanying drawing 1 is the schematic diagram for applying the present invention to MIG welding, and vibration is applied on ignition tip.
Accompanying drawing 2 is the schematic diagram for applying the present invention to simple TIG weld.
Accompanying drawing 3 is the schematic diagram for applying the present invention to silk filling TIG weld, and vibration source can be placed parallel to horizontal plane.
Accompanying drawing 4 is the schematic diagram being applied to the present invention on torch neck.
Reference：Vibration source 1, vibration guide rod 2, nozzle 3, conducting rod 4, wire 5, welding wire 6, ignition tip 7, magnetism servo-electric motor water-cooling
8。
Embodiment：
With reference to the accompanying drawings and examples, the present invention is further illustrated.
As shown in the following drawings, the present invention proposes a kind of electrode or packing material push-pull type micro-vibration auxiliary arc-welding dress
Put, provided with Arc Welding Power, conducting rod 4, wire 5, welding wire 6, nozzle 3, it is characterised in that be provided with to recommend to decline in welding process and shake
Motivation structure, the push-pull type micro-vibration mechanism are provided with vibration guide rod 2, vibration source 1 and vibration power supply, wherein wire 5 and connected
Conducting rod 4 and electrode cramping body or welding wire supply part form welding circuit, and the vibration guide rod 2 in push-pull type micro-vibration mechanism connects
Vibration source 1 and electrode cramping body, welding wire supply part or external nozzles are connect, vibration source 1 is powered by vibrating with power supply, the welding wire
Supply part is ignition tip 7 or wire-feeding pipe；Magnetism servo-electric motor water-cooling 8 is additionally provided with the vibration guide rod 2；The vibration source 1 is using vibration
The ultrasonic vibration source or electric and magnetic oscillation source or pneumatic straight-line oscillation and motor vibrations vibration that frequency range is 1KHz ~ 100KHz
Source.
In order to ensure the effect of vibration in the present invention, using symmetrical push-pull type vibration mode, have respectively in welding gun both sides
One group of push-pull type micro-vibration mechanism, two groups of push-pull type micro-vibration mechanisms share a set of power supply and power control circuit, make two groups to push away
The work of pull micro-vibration mechanism is synchronous.
The present invention includes a kind of electrode or packing material push-pull type micro-vibration auxiliary arc welding method, step are as follows：
Step 1：Micro-vibration source converts electrical energy into vibrational energy, is delivered on ignition tip, makes at ignition tip through vibrating guide rod
In micro-vibration state,
Step 2：Welding current is transferred to ignition tip from conducting rod through wire, ensures welding circuit conducting, and wire is in pine
Relaxation state, the vibration of ignition tip is not influenceed,
Step 3：Welding major loop is connected, in run-on tab up-igniting electric arc, opens magnetism servo-electric motor water-cooling.
Step 4：After arc stability, Vibration on Start-up source, treat that electrode or welding wire are in good micro- state of shaking, welding gun
It is transferred on workpiece,
Step 5：Under micro-vibration effect, the mode of action in molten bath occurs for arc force and molten drop for electrode or welding wire
Corresponding change, so as to cause the orderly concussion in molten bath, and then crystal grain thinning, welding quality is improved,
Step 6：After welding process, Arc Welding Power is first closed, turns off vibration power supply.
Embodiment 1：
The present invention is applied to the example of MIG welding.
As shown in Figure 1, vibration source 1 uses supersonic generator, and the electric signal that vibration source is sent is changed by transducer
Into the mechanical oscillation of corresponding frequencies, the mechanical vibration amplitudes of transducer are smaller, and vibration guide rod 2 also acts as while transmitting and vibrating
Amplify the effect of amplitude, end amplitude can reach 10um ~ 150um, and vibration is transmitted to ignition tip 7 or is transmitted to Fig. 4 by vibration guide rod 2
In external nozzles on, a transducer is placed in the both sides of welding gun respectively, is connected with each other between transducer, is then connected to generator
On so that when the transducer contracts of one end, other end transducer is in the state of expansion, so as to form push-pull type vibration,
The device can be worked under conditions of frequency is 15KHz to 100KHz, and respective tones are produced on ignition tip or external nozzles
The micro-vibration of rate, the input power of device can arbitrarily be adjusted between 50W to 3000W, then, protected and welded according to common gases
Method welded, to open magnetism servo-electric motor water-cooling, after arc stability, startup is shaken first in run-on tab up-igniting electric arc during welding
Dynamic source, treat that electrode or welding wire are in good micro- state of shaking, welding gun is then transferred on workpiece, be first after welding process
Arc Welding Power is closed, turns off vibration power supply.
In welding process, thermal radiation can melt first after welding wire end enters arc zone, form molten drop, this
When the molten drop mainly surface tension by solid-state welding wire end, molten drop gravity, plasma jet power and the type of vibrating inertia force four
Power acts on.With gradually growing up for molten drop, vibrating inertia force and plasma jet power significantly increase, when sum of the two is more than surface
During power, molten drop departs from solid-state welding wire end, is transitioned into fine particle in molten bath, and because vibration is micron-sized, and molten drop is certainly
Body has certain inertia again, so, be not in the situation that molten drop is flown by shake.Just because of the driving effect of vibrating inertia force,
Droplet transfer temperature is relatively low, forms cold metal transfer, can strictly control weld heat input, avoids a large amount of of alloying element in welding wire
Scaling loss.Molten drop is transitioned into molten bath with fine particle, the weld defect such as stomata, incomplete fusion caused by can reducing bulky grain transition,
The uniformity of seam organization can be improved.Metal that micro-vibration has melted to consumable electrode end applies extra power, and then can be
Droplet transfer situation is efficiently controlled under different current conditions, is also had while ensureing melting efficiency to reach to workpiece rationally
Heat input.In addition, micro- welding wire to shake can also the energy transmission of vibration into molten bath, this can play agitation molten pool,
The effect of crystal grain thinning so that joint microstructure fine uniform.So deposition rate can be improved by applying micro-vibration, improve when welding
Capacity usage ratio and joint microstructure form, improve the homogenization degree of composition and the mechanical property of joint.
Embodiment 2：
The present invention is applied to the example of simple TIG weld.
As shown in Figure 2, after vibration source 1 applies micro-vibration, electrode can be in the vibrational state of identical frequency, electrode
Side-to-side vibrations can influence the form of electric arc, and such electric arc can play a certain degree of stirring action to molten bath, promote molten
The rolling in pond, improve seam organization.
Embodiment 3：
The present invention is applied to the schematic diagram of silk filling TIG weld, and as shown in Figure 3, vibration source 1 can be put parallel to horizontal plane
Put, micro-vibration source converts electrical energy into vibrational energy, is delivered to through vibrating guide rod on wire-feeding pipe, welding wire is also at micro-vibration shape
State.Welding major loop is connected, in run-on tab up-igniting electric arc, magnetism servo-electric motor water-cooling 8 is opened, after arc stability, Vibration on Start-up source, treats
Wire-feeding pipe is in good micro- state of shaking, and welding gun is transferred on workpiece, and welding wire is under micro-vibration effect, and the droplet transfer accelerates, together
When can also cause the orderly concussion in molten bath, and then crystal grain thinning, improve welding quality.
Claims (2)
1. a kind of packing material push-pull type micro-vibration aids in arc welding equipment, provided with Arc Welding Power, conducting rod, wire, welding wire supply
Part, external nozzles, it is characterised in that be additionally provided with push-pull type micro-vibration mechanism, the push-pull type micro-vibration mechanism is led provided with vibration
Bar, vibration source and vibration power supply, wherein wire connect conducting rod and ignition tip forms welding circuit, push-pull type micro-vibration machine
Vibration guide rod connection vibration source and welding wire supply part or external nozzles in structure, welding wire supply part include ignition tip and non-
Silk filling wire-feeding pipe during consumable electrode arc welding, vibration source are powered by vibrating with power supply；Water cooling unit is additionally provided with the vibration guide rod
Structure；The vibration source uses vibration frequency range as 1KHz ~ 100KHz ultrasonic vibration source or electric and magnetic oscillation source or pneumatic straight line
Vibration and motor vibrations vibration source；
Using symmetrical push-pull type vibrational structure, one group of push-pull type micro-vibration mechanism is respectively equipped with welding gun both sides, two groups are recommended
The vibrating mechanism that declines shares a set of power supply and power control circuit, makes two groups of push-pull type micro-vibration mechanism work synchronous；
Vibration guide rod for ensureing to insulate between ignition tip and vibration source is made from high temperature resistant, high-strength insulating material, is shaken
Dynamic guide rod is connected to realize together by multiple component combinations, and vibration guide rod, using being threadedly coupled, vibrates guide rod with micro-vibration source
Diameter between 1mm ~ 5mm, vibrate guide rod and between welding wire supply part or external nozzles using be threadedly coupled, welding wire confession
Side-to-side vibrations amplitude range to part is 10um ~ 150um；
Connected between conducting rod and ignition tip with 2 ~ 4 copper conductors, wire is in relaxed state；
The magnetism servo-electric motor water-cooling is placed in the outside of nozzle, realizes that water bag bag body is made of wear-resistant plastic, directly using cooling water bag
Contacted with vibration guide rod；
Connected between welding wire supply part and vibration guide rod with elasticity preferably high-temperature insulation material, or vibration guide rod is by multiple
Component combination realizes connection together, but need to ensure to insulate between ignition tip and vibration source.
2. a kind of push-pull type micro-vibration aids in arc welding method, it is characterised in that is shaken using recommending to decline as described in the appended claim 1
Dynamic auxiliary arc welding equipment is realized, is comprised the following steps that：
Step 1：Micro-vibration source converts electrical energy into vibrational energy, is delivered to through vibrating guide rod on ignition tip, ignition tip is in micro-
Vibrational state；
Step 2：Welding current is transferred to ignition tip from conducting rod through wire, ensures welding circuit conducting, and wire is in relaxation shape
State, the vibration of ignition tip is not influenceed；
Step 3：Welding major loop is connected, in run-on tab up-igniting electric arc, opens magnetism servo-electric motor water-cooling；
Step 4：After arc stability, Vibration on Start-up source, material to be filled is in good micro- state of shaking, and welding gun is transferred to work
On part；
Step 5：Under micro-vibration effect, arc force and molten drop can be sent out the mode of action in molten bath for electrode or packing material
Raw corresponding change, so as to cause the orderly concussion in molten bath, and then crystal grain thinning, improves welding quality；
Step 6：After welding process, Arc Welding Power is first closed, turns off vibration power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410492669.7A CN104384685B (en) | 2014-09-24 | 2014-09-24 | Electrode or packing material push-pull type micro-vibration auxiliary arc welding equipment and method |
Applications Claiming Priority (1)
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| CN201410492669.7A CN104384685B (en) | 2014-09-24 | 2014-09-24 | Electrode or packing material push-pull type micro-vibration auxiliary arc welding equipment and method |
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| CN104384685B true CN104384685B (en) | 2017-12-12 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625338A (en) * | 2014-12-17 | 2015-05-20 | 张锴 | Micro-vibration welding device and method |
| CN105364297A (en) * | 2015-12-09 | 2016-03-02 | 温州大学 | Vibratory welding device |
| CN108941854A (en) * | 2018-08-02 | 2018-12-07 | 威海万丰镁业科技发展有限公司 | Low frequency sound field controlling type swing arc Tig Welding device and method |
| CN109048001A (en) * | 2018-08-02 | 2018-12-21 | 威海万丰镁业科技发展有限公司 | Low frequency sound field swing arc gas metal-arc welding welder and method |
| US20230018884A1 (en) | 2019-12-20 | 2023-01-19 | Petróleo Brasileiro S.A. - Petrobras | Rotating arc welding torch |
| CN112276301B (en) * | 2020-10-16 | 2024-02-02 | 经典重工集团股份有限公司 | Integrated cold wire submerged arc welding device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US3845271A (en) * | 1972-11-30 | 1974-10-29 | Nippon Kokan Kk | Oscillating type automatic arc welding apparatus |
| JPS5614080A (en) * | 1979-07-17 | 1981-02-10 | Res Kaunsuru Obu Arubaata Za | Arc welding |
| JPS63157767A (en) * | 1986-12-19 | 1988-06-30 | Mitsubishi Heavy Ind Ltd | Excitation welding method |
| CN100577340C (en) * | 2007-11-23 | 2010-01-06 | 哈尔滨工业大学 | Composite welding method of ultrasound wave and non-melt pole electrical arc |
| CN101852643B (en) * | 2010-05-25 | 2012-01-04 | 中国人民解放军国防科学技术大学 | Temperature self-compensating double grating symmetrical push-pull type fiber grating vibrating sensor |
| CN101966624B (en) * | 2010-09-10 | 2012-05-23 | 华南理工大学 | Welding method based on precise combination of ultrasonic energy and resistance heat and device thereof |
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