CN107052533A - A kind of magnetic control K TIG welding guns based on permanent magnet array - Google Patents
A kind of magnetic control K TIG welding guns based on permanent magnet array Download PDFInfo
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- CN107052533A CN107052533A CN201611161813.4A CN201611161813A CN107052533A CN 107052533 A CN107052533 A CN 107052533A CN 201611161813 A CN201611161813 A CN 201611161813A CN 107052533 A CN107052533 A CN 107052533A
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- magnet
- permanent magnet
- fixed plate
- fixation grooves
- magnetic control
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Classifications
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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
- B23K9/00—Arc welding or cutting
- B23K9/08—Arrangements or circuits for magnetic control of the arc
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Arc Welding Control (AREA)
Abstract
The invention belongs to K TIG welding gun technical fields, disclose a kind of magnetic control K TIG welding guns based on permanent magnet array, the copper sheathing lower edge of welding gun pipette tips installs cross fixed plate, four supporting plate bottoms of cross fixed plate are separately installed with magnet-fixation grooves, a number of permanent magnet is placed with magnet-fixation grooves, permanent magnet is spacing with the baffle plate of magnet-fixation grooves and the magnet fixed block being arranged in magnet-fixation grooves；Permanent magnet in four magnet-fixation grooves is according to N poles and N extremely relative, S poles and S be extremely positioned opposite and symmetrical equivalent setting.The present invention replaces electromagnet using the controllable permanent magnet of number, and compression K TIG weld electric arcs in construction toroidal magnetic field simplify device on the premise of field controllable is ensured；Increase the contained effect and penetration capacity of electric arc, improve welding arc heat source characteristic and improve stability；Regulation is each to permanent magnet number, and process window needed for pointedly obtaining realizes the high efficiency of TIG welderings.
Description
Technical field
It is to be related to a kind of increase controlling magnetic field to shrink electricity specifically the invention belongs to a kind of K-TIG welding guns technical field
The magnetic control K-TIG welding guns of arc column.
Background technology
TIG welderings can realize high quality welds, but existing TIG welderings arc energy density is relatively low, limit its welding effect
Rate.Based on traditional TIG welding guns, cathode shrinkage effect is produced by water cooling tungsten electrode, coordinates larger welding current, obtains a kind of new
Type piercing welding process, referred to as CF-TIG welderings or K-TIG welderings；Its principle is：In TIG weld technique, welding arc is built
Stand between tungsten electrode (negative electrode) and workpiece molten bath (anode), the adhesion form between electric arc and negative electrode depends mainly on the heat of negative electrode
Electron emission behavior, and the thermionic emission of negative electrode occurs mainly in the tungsten electrode tip end surface that temperature is higher than 3000K.In order to restrain
Electric arc, takes away the heat of tungsten electrode by water cooling copper electrode sleeve, the high-temperature region area at compression tungsten electrode tip, so that by electron emission
Area compresses are to the minimum position at tungsten electrode tip, and the area of electric arc root reduces, electromagnetic contractile force increase, and arc column is radially upper to press
Contracting, acts on the arc pressure increase of weld pool surface, energy density increase.So, arc force can overcome the table of bath surface
Face tension force, compressing weld pool surface produces deep molten aperture on thickness of workpiece direction；If welding current is sufficiently large, workpiece is complete
Penetration, can form the aperture through workpiece.K-TIG welderings can single pass welding be realized on the premise of square groove to cut deal
" single-sided welding, two-sides forming ", possesses the prospect of being widely applied in the ferrous and nonferrous metals welding field of 3~12mm thickness.
Although energy density very high Laser Welding, electron beam weldering and plasma arc welding (PAW) have stronger penetration capacity, K-TIG welderings are used as one
The welding procedure using free electric arc is planted, in the walking of equipment manufacturing cost, operation and maintenance cost, equipment operation complexity and welding gun
There is obvious advantage in terms of flexibility.
At present, found by substantial amounts of technique application experiment：K-TIG welding procedures are suitable for welding the metal of lower thermal conductivity
Material, as material thermal conductivity increases, the stability reduction of aperture.When welding cut deal, arc constriction degree is not enough, unfavorable
Aperture is penetrated in formation stabilization, the process window for obtaining qualified weld seam is smaller.Main reason is that, current K-TIG welding is adopted
It is thermal source with free electric arc, the form of free electric arc is decided by electrode shape, electrode gap and current value.On the one hand, by the moon
After the water cooling of pole, the energy density lifting of electric arc is limited.On the other hand, water-cooled cathode is shorter to the blockage effect of electric arc
Exist in arc length, the minor fluctuations of electric arc can influence the stability of aperture in welding process.Thus, it is necessary to improve electric arc
Morphological stability.Sum it up, how further to improve K-TIG welding procedures, effectively regulate and control welding arc form, it is ensured that small
The stability in hole, is to stablize K-TIG welding processes, it is ensured that obtain the key of up-to-standard weld seam.
Externally-applied magnetic field compression arc technology is a kind of common method of improvement arc welding process stability, that is, passes through and change electricity
The form of arc, controls the characteristic of electric arc to improve the adaptability of welding procedure.The magnetic field commonly used in welding has three kinds：
(1) magnetic line of force of additional transverse magnetic field, i.e. externally-applied magnetic field is perpendicular through arc axis；
(2) magnetic line of force direction of additional longitudinally coaxial magnetic field, i.e. externally-applied magnetic field is parallel with arc axis direction；
(3) additional toroidal magnetic field, it can make the shape of electric arc arc column be changed into ellipse, make arc column energy density and electric arc electricity
Field intensity is improved.
Additional lateral magnetic field control low current (<10A) electric arc, can significantly affect arc shape and arc energy
Density, low-frequency AC magnetic fields swing electric arc, and high frequency AC magnetic field can make arc constriction；With the increasing of applied field strengths
Plus, this blockage effect is gradually aggravated.But, the deflection of high current arc is very big, and the control method is difficult to reach promising result.
Outside Longitudinal Magnetic-field Has is mainly used to promote electric arc to rotate, and changes the radial distribution of arc column plasma jet and current density, and influence is female
Heating, fusing and the appearance of weld of material.Additional toroidal magnetic field can act power to electric arc along electric arc girth, often be used to change
Become the compressed configuration of electric arc, so as to change heat-force characteristic of electric arc more significantly.External scholar is to toroidal magnetic field constraint arc
Many researchs are carried out.Yamaguchi devises outer, coaxial toroidal magnetic field using ferrimagnet around nozzle, it is to avoid magnetic
Cause double arcs.Cusp magnetic fields are carried in above plasma column by the Hirata seminars of Osaka, Japan university, and arc column is become by compression
The higher elliptic cylindrical shape of energy density is formed, magneto-restrictive can be carried out to constrained arc by demonstrating.Arata et al. tests magnetic
Compress and found after the fundamental characteristics of plasma-arc：After cusp magnetic fields are compressed, plasma column cross section is changed into from circle
Speed of welding is improved 50%, obtains the good weld seam of presentation quality by ellipse, electric-field intensity increase, current density increase.
Nomura have studied influence of the magnetic head distribution to TIG arc shapes, it is believed that the shape of magnetic control arc can be adjusted by changing magnetic field configuration
State, obtains the weld seam of bigger depth-to-width ratio.At home, Zhao Pengsheng of Institutes Of Technology Of Taiyuan et al. is welding and cut field to magnetic field
Compression plasma arc has carried out substantial amounts of technique application experiment and found：After plasma arc is recompressed through double sharp magnetic field, electric arc is cut
Face pressure is flat, and energy field and pressure field are intensive to major diameter, and electric potential gradient, maximum current density and stagnation pressure have different degrees of
Increase, the critical current for producing " double arcs " also increases；The introducing of external magnetic field make it that welding technological properties and appearance of weld can
Significantly to be adjusted by magnetic field intensity and electric arc orientation, so as to improve the Technological adaptability of PLASMA ARC WELDING, expand
Its big application, while can suppress the generation of double arcs to a certain extent, improves the stability of appearance of weld, improves weldering
Efficiency is connect, the welding for middle plate can obtain good process window.External scholar enters good to toroidal magnetic field constraint arc
Many researchs.
Using electromagnet formation magnetic field in the studies above, hole shape is changed by changing exciting current.But electromagnet is filled
Put more numerous and diverse, space-consuming larger and need independent power supply, be unfavorable for easily pacifying tearing open and appointed with adapting to flexible welding
Business.
The content of the invention
The present invention is to solve the technical problem for how easily optimizing K-TIG weldering welding arcs is based on there is provided one kind
The magnetic control K-TIG welding guns of permanent magnet array, electromagnet is replaced using the controllable permanent magnet of number, to construct toroidal magnetic field compression K-
TIG weld electric arc, simplifies device on the premise of field controllable is ensured；Utilize many structure of magnetic pole tips of adjustable permanent magnet quantity
Magnetic field controllably increases the contained effect of electric arc to reach, increases the penetration capacity of electric arc, can weld thicker workpiece；Improve
The heat source characteristic of K-TIG welding arcs, further improves the stability of K-TIG welding arcs；Suitably adjust each to permanent magnet
Number, can pointedly obtain required excellent process window, and then realize the high efficiency and high speed of TIG welderings.
In order to solve the above-mentioned technical problem, the present invention is achieved by following technical scheme：
A kind of magnetic control K-TIG welding guns based on permanent magnet array, including outside are provided with the welding gun pipette tips of copper sheathing, the weldering
Magnetic control means is fixed with rifle pipette tips, the magnetic control means is fixed including cross fixed plate, magnet-fixation grooves, permanent magnet and magnet
Block；
The cross fixed plate be the cross slab construction with four supporting plates, its center be provided with for
The welding gun fixing hole that the welding gun pipette tips are fixed, four supporting plates of the cross fixed plate are respectively arranged with multiple be used for and institute
State the first fixing hole of magnet-fixation grooves connection, four supporting plates of the cross fixed plate be respectively arranged with one its along length
The strip hole in direction；
The magnet-fixation grooves are that both sides are outwards widened as solid with the cross at the top of cuboid bathtub construction, its notch
It is provided with the connecting portion of fixed board, the connecting portion corresponding with first fixing hole of the cross fixed plate multiple
Second fixing hole；Cuboid bathtub construction one end of the magnet-fixation grooves is provided with baffle plate, another end opening and set；
Four magnet-fixation grooves are separately mounted to four supporting plate bottoms of the cross fixed plate, each magnetic
Ferropexy groove sets one end of the baffle plate close to the cross fixed plate center and open at one end away from the cross fixed plate
Center；The cross fixed plate and the magnet-fixation grooves are with through the bolt of first fixing hole and second fixing hole
Connection；
The permanent magnetism in an at least block permanent magnet, four magnet-fixation grooves is placed in each magnet-fixation grooves
Iron is according to N poles and N extremely relative, S poles and S be extremely positioned opposite and symmetrical equivalent setting；Permanent magnetism in each magnet-fixation grooves
Iron front end by the baffle limiting, end by the magnet fixed block being arranged in the magnet-fixation grooves spacing, institute
Magnet fixed block is stated to pass through the strip hole of the cross fixed plate with the bolt arrangement on its top and fix by nut.
Wherein, the magnetic control means is fixed on the copper sheathing lower edge of welding gun pipette tips.
Wherein, the cross fixed plate directs or through gasket material welding gun rifle is fixed in the way of excessively coordinating
Head.
The beneficial effects of the invention are as follows：
The magnetic control K-TIG welding guns based on permanent magnet array of the present invention, by being placed respectively in four magnet-fixation grooves
A number of permanent magnet, so that magnetic control means formation toroidal magnetic field is constituted at welding gun pipette tips, and then article on plasma arc is produced
Effect is restrained, is capable of the cross-sectional area of greatly compression plasma arc, increases the energy density of plasma arc, so as to increase electric arc
Penetration capacity, make welding gun that there is more preferable penetrability, improve stability, the increase speed of welding of welding process, significantly improve
Welding efficiency, saves welding manufacture cost；Especially while cathode zone is compressed using water cooling tungsten electrode, increase magnetic field is shunk
Arc column, can significantly improve the arc characteristic of K-TIG welding.
, can be square as the magnetic control means of movable part in the magnetic control K-TIG welding guns based on permanent magnet array of the present invention
Just peace is torn open or changed according to the actual requirements, and the permanent magnet for not needing independent current source using small volume can cause device small-sized
Change；By setting magnet fixed block easily to change magnet quantity in magnet-fixation grooves, the present apparatus is set to be applicable difference
The workpiece of intensity currents different-thickness, different degrees of compression plasma arc.Therefore, magnetic control K-TIG welding guns of the invention, are used
The controllable permanent magnet of number replaces electromagnet to construct toroidal magnetic field, on the premise of field controllable is ensured, makes welding gun structure more
It is compact, greatly simplifie device.
In addition, the present invention the magnetic control K-TIG welding guns based on permanent magnet array, can also by change permanent magnet quantity and
Type, changes magnetic field intensity on laterally two directions, controls the contained degree to electric arc, form the hole shape needed, equally may be used
With the electric current and the workpiece of different-thickness of good adaptation varying strength.
Brief description of the drawings
Fig. 1 is the front view of magnetic control K-TIG welding guns provided by the present invention；
Fig. 2 is the upward view of magnetic control K-TIG welding guns provided by the present invention；
Fig. 3 is the dimensional structure diagram of magnetic control K-TIG welding guns provided by the present invention.
In figure：1：Welding gun pipette tips；2：Cross fixed plate；201：Welding gun fixing hole；202：First fixing hole；203：Strip
Hole；3：Magnet-fixation grooves；301：Second fixing hole；302：Baffle plate；4：Permanent magnet；5：Magnet fixed block.
Embodiment
For present disclosure, feature and effect can be further appreciated that, following examples are hereby enumerated, and coordinate accompanying drawing detailed
It is described as follows：
As depicted in figs. 1 and 2, a kind of magnetic control K-TIG welding guns based on permanent magnet array are present embodiments provided, in welding gun
The copper sheathing lower edge of pipette tips 1 is provided with magnetic control means, and the magnetic control means includes cross fixed plate 2, magnet-fixation grooves 3, the and of permanent magnet 4
Magnet fixed block 5.
Cross fixed plate 2 is the cross slab construction with four supporting plates, and its center is according to welding gun pipette tips 1
Size is provided with the welding gun fixing hole 201 of circle, and the welding gun fixing hole 201 can make cross fixed plate 2 be sleeved on welding gun pipette tips 1
Appropriate location, and direct or through the copper sheathing lower edge that gasket material is fixed on welding gun pipette tips 1 in the way of excessively coordinating, make
The lower edge of permanent magnet 4 is less than welding gun tungsten electrode tip and does not contact workpiece, it is to avoid the position of magnetic control means is too low or too high so that contact
Workpiece or constrained arc DeGrain.Four supporting plates of cross fixed plate 2 are separately provided for connecting with magnet-fixation grooves 3
The first fixing hole 202 connect, four supporting plates of cross fixed plate 2 are also respectively provided with its strip hole extended along its length
203。
Magnet-fixation grooves 3 are cuboid bathtub construction, at the top of its notch both sides outwards widen as with cross fixed plate 2
Second fixing hole corresponding with the first fixing hole 202 in cross fixed plate 2 is provided with connecting portion, the connecting portion
301.Cuboid bathtub construction one end of magnet-fixation grooves 3 is provided with baffle plate 302, another end opening and set.Four identical
Magnet-fixation grooves 3 four supporting plate bottoms of cross fixed plate 2, each magnet-fixation grooves are separately mounted to same position
3 notch upwards, is provided with one end of baffle plate 302 close to the center of cross fixed plate 2 and open at one end away from cross fixed plate 2
The heart；Cross fixed plate 2 and magnet-fixation grooves 3 are connected both through the first fixing hole 202 and the second fixing hole 301 with bolt
It is fixed.
The permanent magnetism in a number of identical permanent magnet 4, four magnet-fixation grooves 3 is placed in each magnet-fixation grooves 3
Iron 4 should symmetrical equivalent, and according to N poles and N extremely relative, S poles and S extremely relative principle distribution, i.e., in opposed magnet fixing groove 3
Magnetic pole is identical, and magnetic pole is opposite in adjacent magnets fixing groove 3.After the completion of permanent magnet 4 in each magnet-fixation grooves 3 is placed, before it
End is resisted against the baffle plate 302 of magnet-fixation grooves 3, and end sets the magnet fixed block 5 being arranged in the magnet-fixation grooves, magnet
The top of fixed block 5 is connected with bolt arrangement, is fixed for the strip hole through cross fixed plate 2 and by nut.Thus, forever
Magnet 4 is spacing and fixed by baffle plate 302 and magnet fixed block 5 in magnet-fixation grooves 3.
In order to reduce magnetic conduction, crosswise fixed plate 2 is glass mat, and magnet-fixation grooves 3 are copper, straight with permanent magnet 4
The magnet fixed block 5 of contact is special engineering plastics.
In use, by adjusting the quantity of permanent magnet 4, the compression degree of article on plasma arc can be regulated and controled, controllably
Reduce plasma arc cross-sectional area, increase its energy density；Different compression degrees can be obtained by changing the quantity of permanent magnet 4
Arc column, can better adapt to the welding of different materials different-thickness workpiece.In general, the permanent magnet 4 of greater number can be produced
Raw more high-intensity magnetic field, so that preferably constrained arc, strengthens electric arc penetrability, significantly improving welding efficiency reduces cost.In addition, adjusting
The quantity of permanent magnet 4 can also obtain the hole shape of needs on whole different directions.
Although the preferred embodiments of the present invention are described above in conjunction with accompanying drawing, the invention is not limited in upper
The embodiment stated, above-mentioned embodiment is only schematical, be not it is restricted, this area it is common
Technical staff is under the enlightenment of the present invention, in the case of invention objective and scope of the claimed protection is not departed from, can be with
The specific conversion of many forms is made, these are belonged within protection scope of the present invention.
Claims (3)
1. a kind of magnetic control K-TIG welding guns based on permanent magnet array, including outside are provided with the welding gun pipette tips of copper sheathing, its feature exists
In being fixed with magnetic control means in the welding gun pipette tips, the magnetic control means includes cross fixed plate, magnet-fixation grooves, permanent magnet
With magnet fixed block；
The cross fixed plate be the cross slab construction with four supporting plates, its center be provided with for it is described
The welding gun fixing hole that welding gun pipette tips are fixed, four supporting plates of the cross fixed plate are respectively arranged with multiple be used for and the magnetic
First fixing hole of ferropexy groove connection, four supporting plates of the cross fixed plate be respectively arranged with one its along its length
Strip hole；
The magnet-fixation grooves are cuboid bathtub construction, at the top of its notch both sides outwards widen as with the cross fixed plate
Connecting portion, be provided with multiple second corresponding with first fixing hole of the cross fixed plate on the connecting portion
Fixing hole；Cuboid bathtub construction one end of the magnet-fixation grooves is provided with baffle plate, another end opening and set；
Four magnet-fixation grooves are separately mounted to four supporting plate bottoms of the cross fixed plate, and each magnet is consolidated
Determining groove sets one end of the baffle plate close to the cross fixed plate center and open at one end away from the cross fixed plate center；
The cross fixed plate and the magnet-fixation grooves are with through the bolt connection of first fixing hole and second fixing hole；
The permanent magnet placed in each magnet-fixation grooves in an at least block permanent magnet, four magnet-fixation grooves is pressed
According to N poles and N extremely relative, S poles and S be extremely positioned opposite and symmetrical equivalent setting；Before permanent magnet in each magnet-fixation grooves
End by the baffle limiting, end by the magnet fixed block being arranged in the magnet-fixation grooves spacing, the magnetic
Ferropexy block is fixed through the strip hole of the cross fixed plate and by nut with the bolt arrangement on its top.
2. a kind of magnetic control K-TIG welding guns based on permanent magnet array according to claim 1, it is characterised in that the magnetic
Control device is fixed on the copper sheathing lower edge of welding gun pipette tips.
3. a kind of magnetic control K-TIG welding guns based on permanent magnet array according to claim 1, it is characterised in that described ten
Word fixed plate directs or through gasket material and welding gun pipette tips is fixed in the way of excessively coordinating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611161813.4A CN107052533B (en) | 2016-12-15 | 2016-12-15 | A kind of magnetic control K-TIG welding gun based on permanent magnet array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611161813.4A CN107052533B (en) | 2016-12-15 | 2016-12-15 | A kind of magnetic control K-TIG welding gun based on permanent magnet array |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107052533A true CN107052533A (en) | 2017-08-18 |
| CN107052533B CN107052533B (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611161813.4A Expired - Fee Related CN107052533B (en) | 2016-12-15 | 2016-12-15 | A kind of magnetic control K-TIG welding gun based on permanent magnet array |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110449699A (en) * | 2019-08-15 | 2019-11-15 | 广东省智能制造研究所 | A kind of multilayer wedge angle magnetic control welding generating device and welding gun |
| CN111168194A (en) * | 2020-01-14 | 2020-05-19 | 佛山国防科技工业技术成果产业化应用推广中心 | Quadrupole magnetic field based method for controlling electric arc additive manufacturing and quadrupole magnetic field system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449699A (en) * | 2019-08-15 | 2019-11-15 | 广东省智能制造研究所 | A kind of multilayer wedge angle magnetic control welding generating device and welding gun |
| CN110449699B (en) * | 2019-08-15 | 2024-05-17 | 广东省智能制造研究所 | Multilayer closed angle magnetic control welding generating device and welding gun |
| CN111168194A (en) * | 2020-01-14 | 2020-05-19 | 佛山国防科技工业技术成果产业化应用推广中心 | Quadrupole magnetic field based method for controlling electric arc additive manufacturing and quadrupole magnetic field system |
| CN111168194B (en) * | 2020-01-14 | 2022-06-28 | 佛山国防科技工业技术成果产业化应用推广中心 | Quadrupole magnetic field based method for controlling electric arc additive manufacturing and quadrupole magnetic field system |
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| Publication number | Publication date |
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| CN107052533B (en) | 2018-11-30 |
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