CN209223372U - A kind of gas tungsten arc welding welding gun of compressible electric arc - Google Patents
A kind of gas tungsten arc welding welding gun of compressible electric arc Download PDFInfo
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- CN209223372U CN209223372U CN201822226936.2U CN201822226936U CN209223372U CN 209223372 U CN209223372 U CN 209223372U CN 201822226936 U CN201822226936 U CN 201822226936U CN 209223372 U CN209223372 U CN 209223372U
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Abstract
The utility model discloses a kind of gas tungsten arc welding welding guns of compressible electric arc, and the water cooling heat radiating device being made of electrode handle, electrode tip holder, water inlet pipe, outlet pipe, electrode cap, seal washer.Wherein the head of electrode handle is the tungsten electrode seat for installing tungsten electrode, and positioning table is equipped in the middle part of electrode handle, and electrode handle tail is heat-dissipating cylinder, and tungsten electrode and tungsten electrode seat are interference fitted, and so that tungsten electrode and electrode handle is become an entirety, i.e. compound electrode by Hard link；Electrode handle makes compound electrode precisely be connected with electrode tip holder by positioning table with electrode tip holder.Air flue is formed between welding torch casing and electrode tip holder, cooling water cavity is formed between heat-dissipating cylinder and electrode tip holder, water inlet pipe and outlet pipe are connected with cooling water cavity, and water inlet pipe is located inside outlet pipe, heat-dissipating cylinder peripheral wall is equipped with several deflector holes, and the opening of heat-dissipating cylinder and the nozzle of water inlet pipe are opposite.The good cooling results of the utility model welding gun, welding penetration is big, is conveniently replaceable electrode, does not influence welding effect after replacing electrode every time.
Description
Technical field
The utility model relates to a kind of a kind of welderings of the gas tungsten arc welding of welding gun more particularly to compressible electric arc
Rifle.
Background technique
Gas tungsten arc welding is the arc-melting work that generates between tungsten electrode and workpiece under the protection of inert gas
Part or welding wire (if using filler wire) weld together workpiece.Argon tungsten-arc welding since the advent of the world, in over half a century
Since, most outstanding the disadvantage is that electric arc is in free combustion state, energy density is lower, causes welding production efficiency low, and weld
It is shallower to connect fusion penetration, is typically only capable to weld 3-5mm steel plate.It is analyzed by the physical attribute to electric arc and hot plasma,
It is simple to be difficult to realize by increase electrical power to meet efficient welding and penetration fustion welding, moreover, heat input is excessive with heat affected area,
Post welding distortion and residual stress are larger.
It is easier according to electronics at tip and in the principle of hot end electric discharge, the electric arc that tungsten electrode inert gas protected welding gun generates
Tungsten electrode tip at first generates, and moment tip temperature is sharply increased and spread, and electric arc is generated in entire tungsten electrode front end.Further grind
Study carefully and show that operating current is bigger, arc pressure is bigger, and arc energy density is higher.As electric current continues to increase, arc energy is close
Degree improves, and tungsten electrode surface temperature can be increased constantly.If it exceeds the fusing point of tungsten, tungsten electrode will be damaged.So tungsten inert gas
Protect the arc energy density of weldering cannot be too big, so the welding penetration of common gas tungsten arc welding is limited.
Lowering tungsten electrode temperature in welding can make electric arc be compressed in eletrode tip, in order to improve tungsten inert gas
The energy density for protecting weldering, is added water-cooling system on the basis of original inert gas protected welding gun, cools down to tungsten electrode.This
In the case of kind, after tungsten electrode tip generates electric arc, since water cools down tungsten electrode outer diameter, make tungsten electrode central temperature much higher than outer
Diameter.In this case electric arc only generates at tungsten electrode center, and arc pressure enhancing, arc energy density significantly increases.To tungsten electrode into
Row is effectively cooling, so that tungsten electrode surface temperature is no more than fusing point, so that it may so that tungsten electrode works under larger current.
Under efficient cooling electrode case, the electric arc of gas tungsten arc welding is forced to be compressed to the tip of tungsten electrode, makes
The current density for obtaining tungsten electrode increases (while also improving the work function of electron emission), and electric arc can generate stronger " shrinking from magnetic "
Effect, the intensity of this effect is directly proportional to by carrying the current squaring of conductor, and with square being inversely proportional for arc root diameter, electric current is got over
Greatly, magnetic pinch is stronger.Tungsten electrode cooling effect is better, and the effect of electric arc to center convergence is better, and arc pressure is bigger.Tungsten electrode
Cooling effect is better, and operating current is bigger, and arc pressure is bigger.When arc pressure is larger, electric arc has molten bath when welding
Compared with thump, there is keyhole effect, realizes penetration fustion welding.With the continuous improvement of cooling effect, tungsten electrode generates the area of electric arc
It can constantly reduce, arc pressure is constantly reinforced, and the fusion penetration of electric arc continues to increase, and the plate thickness of welding is continuously increased.Experiments have shown that
In the case of square groove, water cooling tungsten electrode welding gun can realize single-side welding double-side forming to 10mm thick carbon steel plate or 8mm aluminium alloy plate,
And weld seam metallographic structure and mechanical property are substantially better than common welding.Cooling effect is better, and welding penetration is bigger, metallographic structure and
Mechanical property is better.Good cooling is the key that obtain good penetration fustion welding.
Under efficient cooling electrode case, arc diameter reduces, and the additonal pressure of immediate vicinity increases, due to distant place
Electric arc does not have an impact, and additonal pressure is axially formed barometric gradient, this barometric gradient makes in electric arc medium from high pressure to low pressure
Place's flowing, forms cathode jet stream.When occurring stronger cathode jet stream in the electric arc of gas tungsten arc welding, prevent from
The horizontal swing of electric arc, and guarantee that cathode protection surely makes arc stability in the end of cathode rod.The tungsten electrode of efficiently cooling electrode is lazy
Property gas shielded arc welding to overcome the existing electric arc occurred by the interference of random natural airflow of common gas tungsten arc welding horizontal
To swing, the situation of arc root shakiness.Cooling efficiency is higher, and cathode jet stream is more obvious, and cathode protection is smaller, and electric arc is more strong, heat
Efficiency is higher, and penetration fustion welding effect is better.
In order to make tungsten electrode obtain good cooling, there are the various ways such as direct, indirect to cool down tungsten electrode.Wherein utilize
The fixed tungsten electrode of electrode support is made with thermal conductive resin metal, by passing in and out the cooling electrode support of the intracorporal cooling water of welding gun,
Electrode support recycles the cooling tungsten electrode of heat transfer or tungsten electrode folder is a kind of succinct, highly effective structure.The welding gun of this structure
When work, the heat that tungsten electrode generates is transmitted in coolant by electrode support, guarantees that tungsten electrode can be in long-time work under high current
Make and electric arc only generates at tungsten electrode center, realizes penetration fustion welding.
The tungsten electrode of water-cooled tungsten electrode inert gas protected welding gun utilizes at present, and there is thermal conductive resin metal bracket is made
It is allowed to be fixed in welding gun, by the cooling electrode support of the intracorporal water of disengaging welding gun, electrode support recycles the cooling group of heat transfer
Composite electrode or tungsten electrode folder.In welding gun work, the heat of electrode can be transmitted in coolant by bracket.For convenience more
It changes, tungsten electrode or combination tungsten electrode are fixed on welding gun using screw thread or opening folder at present.It is well known that the positioning of regular screw threads
Precision is not high, is threadedly coupled so that electrode can generate random deviation in the physical location and design position of torch head.This will be caused
Every time after replacement electrode, due to electrode position difference, so that welding effect does not have good reproduction.Tungsten electrode folder due to tungsten electrode
Contact area is small, and cooling effect is poor, and welding gun welding penetration is shallower, effect is poor；When operating current is greater than 180A, it just will appear electrode
Larger problem is lost.
In the case where metallic support is connect with tungsten electrode, due to water inlet pipe bore is small or with electrode base distance it is remote, make
Coolant is in laminar flow in water chamber, and cooling effect is also bad.
The high temperature that electric arc generates when due to welding gun work can cause scaling loss to electrode.In order to prevent or slow down electrode erosion,
It needs to protect electrode using inert gas.Designing good nozzle can make electrode, electric arc, workpiece welding position all lazy
In the atmosphere of property gas.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, it is larger to provide a kind of welding penetration, cooling effect
Preferably, it is conveniently replaceable electrode, and does not influence the cooling gas tungsten arc welding weldering of water of welding effect after replacement electrode every time
Rifle.
The purpose of this utility model is achieved through the following technical solutions:
A kind of gas tungsten arc welding welding gun of compressible electric arc, including welding torch casing further include coaxial arrangement
Tungsten electrode, electrode handle, electrode tip holder, water inlet pipe, outlet pipe, gas nozzle further include electrode cap and seal washer, electrode handle, electrode
Seat, water inlet pipe, outlet pipe, electrode cap, seal washer form water cooling heat radiating device, and the head of the electrode handle is for installing
The tungsten electrode seat of tungsten electrode, electrode handle middle part are equipped with positioning table, and electrode handle tail is heat-dissipating cylinder, and tungsten electrode and tungsten electrode seat are interference fitted, and
Forming tungsten electrode and electrode handle by Hard link becomes an entirety, forms compound electrode；
Electrode handle is connected by positioning table with electrode tip holder, and air flue, heat-dissipating cylinder and electricity are formed between welding torch casing and electrode tip holder
Cooling water cavity is formed between electrode seat, water inlet pipe and outlet pipe are connected with cooling water cavity, and water inlet pipe is located inside outlet pipe, dissipate
Hot cylinder peripheral wall is equipped with several deflector holes, and the opening of heat-dissipating cylinder and the nozzle of water inlet pipe are opposite.
Preferably, the tungsten electrode front end is cone, and rear end is cylinder, and the tungsten electrode diameter is 4 ~ 6mm, after tungsten electrode
Holding the ratio of length and tungsten electrode diameter is 1 ~ 5.
Preferably, the tungsten electrode is tip tungsten electrode or round end tungsten electrode or tack tungsten electrode.
Preferably, the ratio of the depth of the tungsten electrode seat and tungsten electrode diameter is 1 ~ 3.
Preferably, the ratio of the heat-dissipating cylinder internal diameter and water inlet bore is 1 ~ 1.1.
Preferably, the internal diameter of the heat-dissipating cylinder is more than or equal to the internal diameter of water inlet pipe, and the quantity of the deflector hole is 2 ~ 8
It is a.
Preferably, total discharge area of the deflector hole is greater than the cross-sectional area of heat-dissipating cylinder, and is less than the transversal of outlet pipe
Area.
Preferably, the middle part of the electrode handle is equipped with No.1 circular conical surface, and electrode tip holder is equipped with No. two circular conical surfaces, No.1 circular cone
Face cooperates with No. two circular conical surfaces, and the taper of No.1 circular conical surface and No. two circular conical surfaces is 30 ~ 45 °.
Preferably, the operating current of gas tungsten arc welding welding gun is 200-1000A.
The beneficial effects of the utility model are:
(1) tungsten electrode is fixed by the way of interference fit with tungsten electrode seat, and replacement electrode is convenient, and electrode handle is equipped with positioning
Platform and electrode tip holder cooperate, and after guaranteeing replacement electrode every time, electrode position is constant, so that welding effect has good reproduction.
(2) water cooling heat radiating device is used, the heat that electrode generates all is taken away by the disengaging of cooling water, makes electrode
Surface temperature is lower when work, and electric arc is made to be compressed in tungsten electrode tip, and electric arc is made to have high energy density.Electrode tail portion
Heat-dissipating cylinder not only guarantees cooling water smoothness, also greatly improves heat exchange efficiency, guarantees that electric arc concentrates on tungsten electrode point when welding gun work
End makes welding gun that there is fabulous depth to melt ability.
(3) water inlet pipe is located inside outlet pipe, i.e., outlet pipe is coaxially set in outside water inlet pipe, guarantee disengaging water and
Under the premise of cooling effect, the volume of water pipe is substantially reduced, realizes the miniaturization of welding gun.Not only using this cannula structure
Guarantee cooling water energy smoothness disengaging, turbulent flow does not occur, and can directly cool down to tungsten electrode and electrode tip holder, which not only makes to weld
Rifle has compact structure, has hole cylinder with electrode tail portion and combine that be allowed to flow of cooling water orderly, with better cooling effect.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is tip tungsten electrode structural schematic diagram；
Fig. 3 is round end tungsten electrode structural schematic diagram；
Fig. 4 is tack tungsten electrode structural schematic diagram；
Fig. 5 is two hole combined electrode structure figures；
Fig. 6 is four pore electrod handle Longitudinal cross section schematics；
Fig. 7 is four hole heat-dissipating cylinder cross-sectional views；
Fig. 8 is electrode tip holder structural schematic diagram；
Fig. 9 is the utility model right view；
In figure, 1- gas nozzle, 2- tungsten electrode, 3- electrode handle, 4- electrode tip holder, 5- outlet pipe, 6- water inlet pipe, 7- air inlet connecting
Head, 8- water outlet connector, 9- water supply connector, 10- cable connector, 11- cooling water cavity, 12- electrode cap, 13- seal washer, 14- tungsten
Electrode seat, 15- positioning table, 16- heat-dissipating cylinder, 17- deflector hole, 18- No.1 circular conical surface, No. bis- circular conical surfaces of 19-, 20- sleeve, 21- weldering
Rifle shell, 22- air flue.
Specific embodiment
Below in conjunction with embodiment, the technical solution of the utility model is clearly and completely described, it is clear that retouched
The embodiment stated is only the utility model a part of the embodiment, instead of all the embodiments.Based in the utility model
Embodiment, those skilled in the art's every other embodiment obtained under the premise of not making the creative labor, all belongs to
In the range of the utility model protection.
Refering to fig. 1-9, the utility model provides two kinds of technical solutions:
Embodiment one:
A kind of gas tungsten arc welding welding gun of compressible electric arc, including welding torch casing 21 further include coaxial arrangement
Tungsten electrode 2, electrode handle 3, electrode tip holder 4, water inlet pipe 6, outlet pipe 5, gas nozzle 1, gas nozzle 1 is nozzle ring, when work
The inert gas energy guard electrode that nozzle ring sprays works in an inert atmosphere, makes electrode will not be because high temperature is burnt or is slowed down
Scaling loss of the electrode in high temperature.It further include the electrode cap 12 and seal washer 13 for the sealing between electrode handle 3 and electrode tip holder 4.
Water supply connector 9, water outlet connector 8, inlet suction port 7, cable connector 10 are additionally provided on welding torch casing 21.Electrode handle 3, electrode tip holder 4, into
Water pipe 6, outlet pipe 5, electrode cap 12, seal washer 13 form water cooling heat radiating device.Shape between welding torch casing 21 and electrode tip holder 4
At air flue 22, air flue 22 is connected with inlet suction port 7, and when welding provides oxygen.
The head of the electrode handle 3 is the tungsten electrode seat 14 for installing tungsten electrode 2, and tungsten electrode seat 14 is cylindrical shape；In electrode handle 3
Portion is equipped with the positioning table 15 cooperated with electrode tip holder 4, and positioning table 15 is to guarantee that 3 tail portion of electrode handle and 4 water inlet pipe 6 of electrode tip holder are managed
Mouth has good docking；3 tail portion of electrode handle is heat-dissipating cylinder 16.
Tungsten electrode 2 and tungsten electrode seat 14 are interference fitted, and guarantee that the tungsten electrode 2 of compound electrode has very high precision.Tungsten electrode 2 passes through hard
Connection is connect with tungsten electrode seat 14, guarantees that the two is connected firmly.
Tungsten electrode 2 and electrode handle 3 form compound electrode, and electrode handle 3 is connected by positioning table 15 with electrode tip holder 4, heat-dissipating cylinder 16
Cooling water cavity 11 is formed between electrode tip holder 4, one end of water inlet pipe 6 is connect with water supply connector 9, and the other end and cooling water cavity 11 connect
It connects, 5 one end of outlet pipe is connect with water outlet connector 8, and the other end is connect with cooling water cavity 11, and water inlet pipe 6 is located in outlet pipe 5
Portion not only guarantees cooling water energy smoothness disengaging using cannula structure, turbulent flow does not occur, and can directly to tungsten electrode 2 and electrode tip holder 4 into
Row cooling.As shown in FIG. 6 and 7, deflector hole 17 there are four being set on 16 peripheral wall of heat-dissipating cylinder.The opening and water inlet pipe 6 of heat-dissipating cylinder 16
Nozzle it is opposite.Water inlet pipe 6 is located among 4 bottom of electrode tip holder, and outer ring is outlet pipe 5.Due to water inlet pipe 6 and 16 phase of heat-dissipating cylinder
Right, the water flowed out from water inlet pipe 6 will enter heat-dissipating cylinder 16, across the deflector hole 17 of heat-dissipating cylinder 16, along 16 outer wall of heat-dissipating cylinder from out
Water pipe 5 flows out.Tungsten electrode 2 can efficiently be cooled down in this way, when guaranteeing welding gun work, electric arc is only generated at tip, and electric arc has
High energy density.In order to guarantee cooling effect, it is necessary to have the cooling water of certain flow, water temperature is lower than boiling after guaranteeing heat exchange
Point, ideal temperature are 40-60 DEG C, and the present embodiment uses 50 DEG C.When welding gun works, the flow of cooling water need to reach 2-12 liters/min
The range of clock, the present embodiment are 10 liters/min.Cooling water inflow needed for welding gun depends on electrical parameter when welding gun works, and electric current is strong
Degree is bigger, and required cooling water flow is bigger.
Cooling water will not leak after electrode cap 12 and seal washer 13 may insure compound electrode installation or replacement, if cold
But water once leaks into the air flue 22 of high temperature high fever, will become water mist with jet-impingement solder joint, on the one hand can generate smog,
On the other hand blackspot can be generated in solder joint, the welding effect of solder joint will be directly affected.And in order to guarantee to work at high temperature, this reality
Apply the seal washer that seal washer 13 in example uses 100 DEG C of heatproof.
Further, the tungsten electrode 2 is manufactured with tungsten or tungsten alloy, and front end is cone, and rear end is cylinder, described
2 diameter of tungsten electrode is 6mm, and the ratio of 2 rear end length of tungsten electrode and 2 diameter of tungsten electrode is 3.The tungsten electrode 2 be tip tungsten electrode (Fig. 2) or
Round end tungsten electrode (Fig. 3) or tack tungsten electrode (4), the present embodiment use tip tungsten electrode.
In order to guarantee cooling effect, the depth of the tungsten electrode seat 14 and the ratio of 2 diameter of tungsten electrode are 1.5.Described dissipates
The ratio of hot 16 internal diameter of cylinder and 6 internal diameter of water inlet pipe is 1.1, guarantees that the water energy of water inlet pipe 6 enters heat-dissipating cylinder 16.The heat-dissipating cylinder
16 internal diameter is more than or equal to the internal diameter of water inlet pipe 6.
Further, total discharge area of the deflector hole 17 is more than or equal to the cross-sectional area of heat-dissipating cylinder 16, and be less than etc.
In the cross-sectional area of outlet pipe 5, total discharge area of deflector hole 17 is S=4 × A × B, wherein 4 be the number of deflector hole 17, A
× B is the frontal projected area of single deflector hole 17, and in order to guarantee uniform heat exchange, deflector hole 17 is uniformly distributed.
Material of the electrode handle 3 with thermal conductivity greater than 300w/m k is made, gas tungsten arc welding welding gun
Operating current be 1000A.
Embodiment two:
A kind of gas tungsten arc welding welding gun of compressible electric arc, including welding torch casing 21 further include coaxial arrangement
Tungsten electrode 2, electrode handle 3, electrode tip holder 4, water inlet pipe 6, outlet pipe 5, gas nozzle 1, gas nozzle 1 is nozzle ring, when work
The inert gas energy guard electrode that nozzle ring sprays works in an inert atmosphere, makes electrode will not be because high temperature is burnt or is slowed down
Scaling loss of the electrode in high temperature.It further include the electrode cap 12 and seal washer 13 for the sealing between electrode handle 3 and electrode tip holder 4.
Water supply connector 9, water outlet connector 8, inlet suction port 7, cable connector 10 are additionally provided on welding torch casing 21.Electrode handle 3, electrode tip holder 4, into
Water pipe 6, outlet pipe 5, electrode cap 12, seal washer 13 form water cooling heat radiating device.Shape between welding torch casing 21 and electrode tip holder 4
At air flue 22, air flue 22 is connected with inlet suction port 7, and when welding provides oxygen.
The head of the electrode handle 3 is the tungsten electrode seat 14 for installing tungsten electrode 2, and tungsten electrode seat 14 is cylindrical shape；In electrode handle 3
Portion is equipped with the positioning table 15 cooperated with electrode tip holder 4, and positioning table 15 is to guarantee that 3 tail portion of electrode handle and 4 water inlet pipe 6 of electrode tip holder are managed
Mouth has good docking；3 tail portion of electrode handle is heat-dissipating cylinder 16.
Tungsten electrode 2 and tungsten electrode seat 14 are interference fitted, and guarantee that the tungsten electrode 2 of compound electrode has very high precision.Tungsten electrode 2 passes through hard
Connection is connect with tungsten electrode seat 14, guarantees that the two is connected firmly.
Tungsten electrode 2 and electrode handle 3 form compound electrode, and electrode handle 3 is connected by positioning table 15 with electrode tip holder 4, heat-dissipating cylinder 16
Cooling water cavity 11 is formed between electrode tip holder 4, one end of water inlet pipe 6 is connect with water supply connector 9, and the other end and cooling water cavity 11 connect
It connects, 5 one end of outlet pipe is connect with water outlet connector 8, and the other end is connect with cooling water cavity 11, and water inlet pipe 6 is located in outlet pipe 5
Portion not only guarantees cooling water energy smoothness disengaging using cannula structure, turbulent flow does not occur, and can directly to tungsten electrode 2 and electrode tip holder 4 into
Row cooling.As shown in FIG. 6 and 7, deflector hole 17 there are four being set on 16 peripheral wall of heat-dissipating cylinder.The opening and water inlet pipe 6 of heat-dissipating cylinder 16
Nozzle it is opposite.Water inlet pipe 6 is located among 4 bottom of electrode tip holder, and outer ring is outlet pipe 5.Due to water inlet pipe 6 and 16 phase of heat-dissipating cylinder
Right, the water flowed out from water inlet pipe 6 will enter heat-dissipating cylinder 16, across the deflector hole 17 of heat-dissipating cylinder 16, along 16 outer wall of heat-dissipating cylinder from out
Water pipe 5 flows out.Tungsten electrode 2 can efficiently be cooled down in this way, when guaranteeing welding gun work, electric arc is only generated at tip, and electric arc has
High energy density.In order to guarantee cooling effect, it is necessary to have the cooling water of certain flow, water temperature is lower than boiling after guaranteeing heat exchange
Point, ideal temperature are 40-60 DEG C, and the present embodiment uses 60 DEG C.When welding gun works, the flow of cooling water need to reach 2-12 liters/min
The range of clock, the present embodiment are 12 liters/min.Cooling water inflow needed for welding gun depends on electrical parameter when welding gun works, and electric current is strong
Degree is bigger, and required cooling water flow is bigger.
Cooling water will not leak after electrode cap 12 and seal washer 13 may insure compound electrode installation or replacement, and in order to
Guarantee works at high temperature, and seal washer 13 uses 100 DEG C of heatproof of seal washer in the present embodiment.
Further, the tungsten electrode 2 is manufactured with tungsten or tungsten alloy, and front end is cone, and rear end is cylinder, described
2 diameter of tungsten electrode is 6mm, and the ratio of 2 rear end length of tungsten electrode and 2 diameter of tungsten electrode is 3.The tungsten electrode 2 be tip tungsten electrode (Fig. 2) or
Round end tungsten electrode (Fig. 3) or tack tungsten electrode (4), the present embodiment use tip tungsten electrode.
In order to guarantee cooling effect, the depth of the tungsten electrode seat 14 and the ratio of 2 diameter of tungsten electrode are 1.5.Described dissipates
The ratio of hot 16 internal diameter of cylinder and 6 internal diameter of water inlet pipe is 1.1, guarantees that the water energy of water inlet pipe 6 enters heat-dissipating cylinder 16.The heat-dissipating cylinder
16 internal diameter is more than or equal to the internal diameter of water inlet pipe 6.
Further, total discharge area of the deflector hole 17 is more than or equal to the cross-sectional area of heat-dissipating cylinder 16, and be less than etc.
In the cross-sectional area of outlet pipe 5, total discharge area of deflector hole 17 is S=4 × A × B, wherein 4 be the number of deflector hole 17, A
× B is the frontal projected area of single deflector hole 17, and in order to guarantee uniform heat exchange, deflector hole 17 is uniformly distributed.
As shown in Figure 6 and Figure 8, the middle part of the electrode handle 3 is equipped with No.1 circular conical surface 18, and electrode tip holder 4 is equipped with No. two circles
The conical surface 19, No.1 circular conical surface 18 and No. two mutual transition fits of circular conical surface 19, transition fit not only have good concentricity, and
There is good commutativity.This structure can guarantee that tungsten electrode 2 is accurately fixed among welding gun, the weldering after guaranteeing replacement tungsten electrode 2 every time
It is the same to connect effect.And the taper of No.1 circular conical surface 18 and No. two circular conical surfaces 19 is 30 ~ 45 °, using circular conical surface tungsten electrode 2 is replaced
It is more convenient.
Material of the electrode handle 3 with thermal conductivity greater than 300w/m k is made, gas tungsten arc welding welding gun
Operating current be 1000A.
The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to herein
Disclosed form, should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and
Can be in contemplated scope described herein, modifications can be made through the above teachings or related fields of technology or knowledge.And this field
The modifications and changes that personnel are carried out do not depart from the spirit and scope of the utility model, then all should be in right appended by the utility model
It is required that protection scope in.
Claims (9)
1. a kind of gas tungsten arc welding welding gun of compressible electric arc, including welding torch casing (21), it is characterised in that: also wrap
Tungsten electrode (2), electrode handle (3), electrode tip holder (4), water inlet pipe (6), outlet pipe (5), the gas nozzle (1) for including coaxial arrangement, are also wrapped
Include electrode cap (12) and seal washer (13), electrode handle (3), electrode tip holder (4), water inlet pipe (6), outlet pipe (5), electrode cap
(12), seal washer (13) forms water cooling heat radiating device, and the head of the electrode handle (3) is the tungsten for installing tungsten electrode (2)
Electrode seat (14), electrode handle (3) middle part are equipped with positioning table (15), and electrode handle (3) tail portion is heat-dissipating cylinder (16), tungsten electrode (2) and tungsten electrode
Seat (14) interference fit, and so that tungsten electrode (2) and electrode handle (3) is become an entirety by Hard link, form compound electrode；Electrode
Handle (3) is connected by positioning table (15) with electrode tip holder (4), forms air flue (22) between welding torch casing (21) and electrode tip holder (4), is dissipated
Form cooling water cavity (11) between hot cylinder (16) and electrode tip holder (4), water inlet pipe (6) and outlet pipe (5) with cooling water cavity (11)
It is connected, and water inlet pipe (6) is located at outlet pipe (5) inside, heat-dissipating cylinder (16) peripheral wall is equipped with several deflector holes (17), heat-dissipating cylinder
(16) opening is opposite with the nozzle of water inlet pipe (6).
2. a kind of gas tungsten arc welding welding gun of compressible electric arc according to claim 1, it is characterised in that: institute
Tungsten electrode (2) front end stated be cone, rear end be cylinder, tungsten electrode (2) diameter be 4 ~ 6mm, tungsten electrode (2) rear end length with
The ratio of tungsten electrode (2) diameter is 1 ~ 5.
3. a kind of gas tungsten arc welding welding gun of compressible electric arc according to claim 2, it is characterised in that: institute
The tungsten electrode (2) stated is tip tungsten electrode or round end tungsten electrode or tack tungsten electrode.
4. a kind of gas tungsten arc welding welding gun of compressible electric arc according to claim 1, it is characterised in that: institute
The depth for the tungsten electrode seat (14) stated and the ratio of tungsten electrode (2) diameter are 1 ~ 3.
5. a kind of gas tungsten arc welding welding gun of compressible electric arc according to claim 1, it is characterised in that: institute
The ratio of heat-dissipating cylinder (16) internal diameter and water inlet pipe (6) internal diameter stated is 1 ~ 1.1.
6. a kind of gas tungsten arc welding welding gun of compressible electric arc according to claim 1, it is characterised in that: institute
The internal diameter for the heat-dissipating cylinder (16) stated is more than or equal to the internal diameter of water inlet pipe (6), and the quantity of the deflector hole (17) is 2 ~ 8.
7. a kind of gas tungsten arc welding welding gun of compressible electric arc according to claim 6, it is characterised in that: institute
The total discharge area for stating deflector hole (17) is greater than the cross-sectional area of heat-dissipating cylinder (16), and is less than the cross-sectional area of outlet pipe (5).
8. a kind of gas tungsten arc welding welding gun of compressible electric arc according to claim 1, it is characterised in that: institute
The middle part for stating electrode handle (3) is equipped with No.1 circular conical surface (18), and electrode tip holder (4) is equipped with No. two circular conical surfaces (19), No.1 circular conical surface
(18) it cooperates with No. two circular conical surfaces (19), and No.1 circular conical surface (18) and the taper of No. two circular conical surfaces (19) are 30 ~ 45 °.
9. a kind of gas tungsten arc welding welding gun of compressible electric arc according to claim 1, it is characterised in that: tungsten
The operating current of pole inert gas-shielded arc welding welding gun is 200-1000A.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822226936.2U CN209223372U (en) | 2018-12-28 | 2018-12-28 | A kind of gas tungsten arc welding welding gun of compressible electric arc |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822226936.2U CN209223372U (en) | 2018-12-28 | 2018-12-28 | A kind of gas tungsten arc welding welding gun of compressible electric arc |
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| CN209223372U true CN209223372U (en) | 2019-08-09 |
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| CN201822226936.2U Active CN209223372U (en) | 2018-12-28 | 2018-12-28 | A kind of gas tungsten arc welding welding gun of compressible electric arc |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109434256A (en) * | 2018-12-28 | 2019-03-08 | 成都国泰景程科技有限公司 | A kind of gas tungsten arc welding welding gun of compressible electric arc |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109434256A (en) * | 2018-12-28 | 2019-03-08 | 成都国泰景程科技有限公司 | A kind of gas tungsten arc welding welding gun of compressible electric arc |
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