CN106392276A - CoTIG welding gun capable of compressing electric arc and welding method - Google Patents
CoTIG welding gun capable of compressing electric arc and welding method Download PDFInfo
- Publication number
- CN106392276A CN106392276A CN201611030406.XA CN201611030406A CN106392276A CN 106392276 A CN106392276 A CN 106392276A CN 201611030406 A CN201611030406 A CN 201611030406A CN 106392276 A CN106392276 A CN 106392276A
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- welding
- nozzle
- gun body
- cotig
- gun
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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
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
-
- 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
- B23K9/235—Preliminary treatment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to a CoTIG welding gun capable of compressing an electric arc and a welding method. The welding gun is hereinafter referred to as CoTIG. The welding gun comprises a gun body and a hollow tungsten electrode, wherein the front end of the gun body is longitudinally connected with a nozzle movably; a through hole is longitudinally formed in the middle of the gun body; the hollow tungsten electrode is fixedly arranged in the through hole; the front end of the hollow tungsten electrode penetrates out of the nozzle; a welding wire hole is longitudinally formed in the middle of the hollow tungsten electrode in a penetrating manner; a cooling channel is formed inside the nozzle; and two ends of the cooling channel respectively communicate with a water inlet tube and a water outlet tube. On the basis of a HiTIG welding gun, the welding efficiency is improved, and welded joint quality of welding is optimized. Electric arc compressing modes are integrated, existing single-action electric arc compression is changed, double electric arc compression is realized, the CoTIG welding gun has great progress on the thicknesses of welding base materials, thick plates can be welded, and the CoTIG welding gun can also be used for welding machining of large plates.
Description
Technical field
The invention belongs to TIG weld technical field, especially for a kind of CoTIG welding gun of compressible electric arc and welding method.
Background technology
TIG welds（Tungsten Inert Gas Welding）, it is also called the protection weldering of non-melt pole noble gases tungsten electrode.By
In the protection of argon, can the Oxidation to fusing metal for the air-isolation, so, TIG weldering is widely used in welding easily oxidation
Non-ferrous metal aluminum, magnesium etc. and its alloy, rustless steel, high temperature alloy, titanium or titanium alloy, the also active metal of infusibility（As molybdenum,
Niobium, zirconium etc.）, and the general common material such as carbon steel, low-alloy steel, except the exigent occasion of welding quality, typically do not adopt
Welded with TIG.But, there is the problems such as fusion penetration is shallow, and deposition speed is little, production efficiency is relatively low in TIG weldering.
Coaxial hot wire TIG welding（HiTIG）It is the device integrating TIG, MIG, MAG Welding advantage, TIG weldering is by sky
Heart depressed place pole carries out automatic feeding, and noble gases, as protective gas, are preheated and gas shield, tool before welding wire enters molten bath
Have the characteristics that deposition efficiency is high, speed of welding is fast, weldquality high heated filament wide temperature range.But during HiTIG weldering, welding
Electric arc is still in free conditions at the arc, and arc force is not concentrated, and arc stiffness is not too big, for improving HiTIG welding further
Once penetrate ability, using compression arc device.
Content of the invention
It is an object of the invention to provide a kind of CoTIG welding gun and welding method, in HiTIG welding gun, compression arc is installed
Device, the compression of the electric arc twice of the mechanical compress of achievable electric arc and thermal contraction, thus obtain the grade of higher energy density from
Subarc is welded；To realize especially by technical scheme below：
A kind of CoTIG welding gun, including gun body, hollow tungsten electrode, the front end of described gun body is connected with nozzle with longitudinal movement, described
It is vertically arranged with through hole in the middle part of gun body, described hollow tungsten electrode is fixedly installed in described through hole, and the front end of hollow tungsten electrode is worn
Go out described nozzle, the middle part of described hollow tungsten electrode is longitudinally through to be provided with welding wire hole；The cooling that is internally provided with of described nozzle is led to
Road, the two ends of described cooling duct have been respectively communicated with water inlet pipe, outlet pipe.
Described CoTIG welding gun, it designs further and is, the end that described nozzle is connected with described gun body is provided with leads
To slotted eye, the front end of described gun body is plugged in described guide slots；Or, the front end of described gun body is provided with guide slots,
The respective end of described nozzle is plugged in described guide slots so that described nozzle is connected to described rifle with longitudinal movement
Body.
Described CoTIG welding gun, it designs further and is, the front end periphery of described gun body is vertically arranged with least one
Detent, the section of the guide slots of described nozzle-end is adapted with the front end section of described gun body, thus described gun body
Front end be plugged in described guide slots nozzle can be moved with respect to described gun body.
Described CoTIG welding gun, it designs further and is, the front portion of described gun body is fixedly installed coaxial with gun body
End cap, the edge of described end cap is connected with the porcelain head of tubular so that described porcelain head covers in the outside of described nozzle.
Described CoTIG welding gun, it designs further and is, the edge sides of described end cap are provided with screw thread, described porcelain
The inwall of head is threadingly attached on the edge of described end cap.
Described CoTIG welding gun, it designs further and is, the middle part of described end cap is provided with screwed hole, described screw thread
Be threaded with leading screw in hole, one end of leading screw is connected with described nozzle, the other end passes described end cap, rotate described leading screw from
And described nozzle moves with respect to described gun body under the tractive of leading screw.
Described CoTIG welding gun, it designs further and is, described nozzle is radially distributed near the end face of described gun body
There is in the side of nozzle the mounting groove of socket, a leading screw connecting seat via described socket grafting and is fixedly installed on described peace
In tankage, the respective end of described leading screw is connected in described leading screw connecting seat.
A kind of welding method, the process employs a kind of CoTIG welding gun, and this welding gun includes gun body, hollow tungsten electrode, described rifle
The front end of body is connected with nozzle with longitudinal movement, is vertically arranged with through hole in the middle part of described gun body, and described hollow tungsten electrode fixation sets
It is placed in described through hole, and the front end of hollow tungsten electrode passes described nozzle, the longitudinally through setting in middle part of described hollow tungsten electrode
There is welding wire hole；Described nozzle be internally provided with cooling duct, the two ends of described cooling duct have been respectively communicated with water inlet pipe, water outlet
Pipe；The method specifically includes following steps：Described welding gun is placed in the side of workpiece to be welded, and nozzle and tungsten electrode with treat
Soldered is relatively；Welding wire enters the welding wire hole within tungsten electrode through wire feeder；It is passed through coolant, coolant is cooled in water inlet pipe
Flow out from outlet pipe after the temperature of passage reduction nozzle, be energized between the soldered of tungsten electrode and workpiece to be welded the starting the arc；In the starting the arc
Afterwards, nozzle moves towards soldered direction, and restriction arc column diameter realizes the first compression of electric arc；Now, nozzle is in coolant
In the presence of, its inwall sets up one layer of cold air film, thus improving the electric current density of arc column, reducing arc column conductive segment, realizing electricity
The second-compressed of arc；After the completion of welding, then nozzle is moved towards away from soldered direction, terminate welding sequence.
Advantages of the present invention with good effect is：
On the basis of HiTIG welding gun, improve the efficiency of welding, optimize the weldquality of welding.Integrate the compression of electric arc
Mode, changes the electric arc compression of conventional single effect, realizes dual electric arc compression, has very big on the thickness of welding base metal
Breakthrough, thicker sheet material can be welded it can also be used to the welding processing of large-sized sheet material.During welding, due to its arc stiffness
Greatly, energy density is high, have stronger electric arc through welding ability, significantly improves welding efficiency.
Brief description
The component structural schematic diagram of Fig. 1 embodiment of the present invention
Fig. 2 is embodiment internal structure schematic diagram.
The schematic diagram of Fig. 3 embodiment nozzle and gun body under no porcelain head state
Fig. 4 embodiment overall structure diagram
In figure, the hollow tungsten electrode of 1-, 2- ball-screw, 3- ball-screw base, 4- welding wire, 5- nozzle, 6- screwed hole, 7-
Gun body, 8- gun body cooling water pipe, 9- porcelain head, 10- water inlet pipe, 11- outlet pipe.
Specific embodiment
Further illustrate below in conjunction with Figure of description technical solution of the present invention：
In conjunction with shown in Fig. 1-Fig. 4, this CoTIG welding gun includes gun body 7, hollow tungsten electrode 1, and the front end of gun body connects with longitudinal movement
There is nozzle 5, in the middle part of gun body, be vertically arranged with through hole, hollow tungsten electrode 1 is fixedly installed in through hole, and the front end of hollow tungsten electrode 1
Pass nozzle, the middle part of hollow tungsten electrode is longitudinally through to be provided with welding wire hole；Nozzle be internally provided with cooling duct（Particular location
It is in figure water inlet pipe, outlet pipe between the end in nozzle, in figure is not drawn into）, the two ends of cooling duct have been respectively communicated with
Water inlet pipe 10, outlet pipe 11.Wherein nozzle specifically selects chromium-zirconium-copper constricting nozzle, and gun body itself is also connected with gun body cooling water pipe
8.In order to avoid gun body cooling water pipe 8 is obscured with water inlet pipe, outlet pipe in part accompanying drawing, gun body cooling water pipe is concealed not to be made
Labelling.
Corresponding welding method specifically includes following steps：Welding gun is placed in the side of workpiece to be welded, and nozzle with
And tungsten electrode is relative with seam to be welded；Welding wire 4 enters the welding wire hole within tungsten electrode through wire feeder；It is passed through coolant in water inlet pipe,
Flow out from outlet pipe after the temperature of coolant cooled passage reduction nozzle, be energized between the soldered of tungsten electrode and workpiece to be welded
The starting the arc；After the starting the arc, nozzle moves towards soldered direction, and restriction arc column diameter realizes the first compression of electric arc；Now,
In the presence of coolant, its inwall sets up one layer of cold air film to nozzle, thus improving the electric current density of arc column, reduction arc column is led
Electric section, realizes the second-compressed of electric arc；After the completion of welding, then nozzle is moved towards away from soldered direction, terminate welding sequence.
The end that nozzle 5 is connected with gun body is provided with guide slots 51, and the front end of gun body is plugged in guide slots 51；When
So, both may be reversed setting, and the front end of gun body is provided with guide slots, and the respective end of nozzle is plugged on guide slots
In so that nozzle is connected to gun body with longitudinal movement.
The front end periphery of gun body 7 is vertically arranged with least one detent 71, actually in figure be symmetrically arranged with multiple
Detent 71 so that the front end of gun body is in spline-like, the front end section phase of the section of the guide slots of nozzle-end and gun body
Adapt to, thus the front end of gun body is plugged in guide slots, nozzle can be moved with respect to gun body.
The front portion of gun body 7 is fixedly installed the end cap 72 coaxial with gun body, and the edge of end cap is connected with the porcelain head of tubular, makes
Obtain the outside that porcelain head covers in nozzle.The edge sides of end cap are provided with screw thread, and the inwall of porcelain head is threadingly attached to end cap
On edge.
The middle part of end cap is provided with screwed hole, is threaded with leading screw 2 in screwed hole, and one end of leading screw is connected with nozzle 5,
The other end passes end cap 72 and is provided with knob 21, and rotating threaded shaft is thus nozzle moves with respect to gun body under the tractive of leading screw
Dynamic.Specifically, nozzle is radially distributed with the mounting groove 52 in the side of nozzle with socket near the end face of gun body, and leading screw connects
Seat 3 via socket grafting and is fixedly installed in mounting groove, and the respective end of leading screw is connected in leading screw connecting seat 3.
The present invention, on the basis of HiTIG welding gun, improves the efficiency of welding, optimizes the weldquality of welding.Integrate
The compress mode of electric arc, changes the electric arc compression of conventional single effect, realizes dual electric arc compression, in the thickness of welding base metal
On have very big breakthrough, thicker sheet material can be welded it can also be used to the welding processing of large-sized sheet material.During welding, due to it
Arc stiffness is big, energy density is high, have stronger electric arc through welding ability, significantly improves welding efficiency.
Claims (8)
1. a kind of CoTIG welding gun it is characterised in that：Including gun body, hollow tungsten electrode, the front end of described gun body connects with longitudinal movement
It is connected to nozzle, in the middle part of described gun body, is vertically arranged with through hole, described hollow tungsten electrode is fixedly installed in described through hole, and hollow
The front end of tungsten electrode passes described nozzle, and the middle part of described hollow tungsten electrode is longitudinally through to be provided with welding wire hole；The inside of described nozzle
It is provided with cooling duct, the two ends of described cooling duct have been respectively communicated with water inlet pipe, outlet pipe.
2. CoTIG welding gun according to claim 1 is it is characterised in that the end that described nozzle is connected with described gun body sets
It is equipped with guide slots, the front end of described gun body is plugged in described guide slots；Or, the front end of described gun body is provided with guiding
Slotted eye, the respective end of described nozzle is plugged in described guide slots so that described nozzle is connected to institute with longitudinal movement
State gun body.
3. CoTIG welding gun according to claim 2 it is characterised in that the front end periphery of described gun body be vertically arranged with to
A few detent, the section of the guide slots of described nozzle-end is adapted with the front end section of described gun body, thus institute
The front end stating gun body is plugged in described guide slots nozzle can be moved with respect to described gun body.
4. CoTIG welding gun according to claim 2 is it is characterised in that the front portion of described gun body is fixedly installed and gun body
Coaxial end cap, the edge of described end cap is connected with the porcelain head of tubular so that described porcelain head covers in the outside of described nozzle.
5. CoTIG welding gun according to claim 4 is it is characterised in that the edge sides of described end cap are provided with screw thread, institute
The inwall stating porcelain head is threadingly attached on the edge of described end cap.
6. CoTIG welding gun according to claim 4 is it is characterised in that the middle part of described end cap is provided with screwed hole, described
It is threaded with leading screw in screwed hole, one end of leading screw is connected with described nozzle, the other end passes described end cap, rotate described silk
Thick stick is thus described nozzle moves with respect to described gun body under the tractive of leading screw.
7. CoTIG welding gun according to claim 6 it is characterised in that described nozzle near described gun body end face radially
The mounting groove in the side of nozzle with socket is distributed with, a leading screw connecting seat via described socket grafting and is fixedly installed on
In described mounting groove, the respective end of described leading screw is connected in described leading screw connecting seat.
8. it is characterised in that the process employs a kind of CoTIG welding gun, this welding gun includes gun body, hollow tungsten to a kind of welding method
Pole, the front end of described gun body is connected with nozzle with longitudinal movement, is vertically arranged with through hole in the middle part of described gun body, described hollow tungsten
Pole is fixedly installed in described through hole, and the front end of hollow tungsten electrode passes described nozzle, and the middle part of described hollow tungsten electrode is longitudinally
Insertion is provided with welding wire hole；Described nozzle be internally provided with cooling duct, the two ends of described cooling duct be respectively communicated with into
Water pipe, outlet pipe；The method specifically includes following steps：Described welding gun is placed in the side of workpiece to be welded, and nozzle with
And tungsten electrode is relative with seam to be welded；Welding wire enters the welding wire hole within tungsten electrode through wire feeder；It is passed through coolant in water inlet pipe, cold
But flow out from outlet pipe after the temperature of agent cooled passage reduction nozzle, be energized between the soldered of tungsten electrode and workpiece to be welded
Arc；After the starting the arc, nozzle moves towards soldered direction, and restriction arc column diameter realizes the first compression of electric arc；Now, spray
In the presence of coolant, its inwall sets up one layer of cold air film to mouth, thus improving the electric current density of arc column, reduction arc column is conductive
Section, realizes the second-compressed of electric arc；After the completion of welding, then nozzle is moved towards away from soldered direction, terminate welding sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611030406.XA CN106392276B (en) | 2016-11-22 | 2016-11-22 | A kind of the CoTIG welding gun and welding method of compressible electric arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611030406.XA CN106392276B (en) | 2016-11-22 | 2016-11-22 | A kind of the CoTIG welding gun and welding method of compressible electric arc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106392276A true CN106392276A (en) | 2017-02-15 |
| CN106392276B CN106392276B (en) | 2019-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611030406.XA Active CN106392276B (en) | 2016-11-22 | 2016-11-22 | A kind of the CoTIG welding gun and welding method of compressible electric arc |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109332858A (en) * | 2018-11-28 | 2019-02-15 | 江苏科技大学 | A kind of hollow tungsten electrode profundity melts the welding method of TIG filler wire welding slab |
| CN114226929A (en) * | 2021-12-21 | 2022-03-25 | 武汉纳瑞格智能设备有限公司 | High-efficiency cooling plate type narrow-gap MAG/MIG welding gun |
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| JPH1080770A (en) * | 1996-09-05 | 1998-03-31 | Mitsubishi Heavy Ind Ltd | Tig welding method |
| CN2544873Y (en) * | 2002-02-07 | 2003-04-16 | 何惠平 | Non-HF drawing electrode plasma cutter |
| US20040026394A1 (en) * | 2002-08-09 | 2004-02-12 | Giese William R. | Welding gun having a removable nozzle end portion and method for operating same |
| CN101823176A (en) * | 2010-01-18 | 2010-09-08 | 上海新亚电焊机有限公司 | Inverter electric welding machine device with adjustable electric arc |
| CN203973032U (en) * | 2014-06-25 | 2014-12-03 | 常州海杰冶金机械制造有限公司 | Gas shielded arc welding one side welding with back formation gas shield structure |
| CN204954136U (en) * | 2015-09-18 | 2016-01-13 | 云南工程建设总承包公司 | Extremely gas shielded arc welding welder that melts with hollow tungsten utmost point |
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2016
- 2016-11-22 CN CN201611030406.XA patent/CN106392276B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1080770A (en) * | 1996-09-05 | 1998-03-31 | Mitsubishi Heavy Ind Ltd | Tig welding method |
| CN2544873Y (en) * | 2002-02-07 | 2003-04-16 | 何惠平 | Non-HF drawing electrode plasma cutter |
| US20040026394A1 (en) * | 2002-08-09 | 2004-02-12 | Giese William R. | Welding gun having a removable nozzle end portion and method for operating same |
| CN101823176A (en) * | 2010-01-18 | 2010-09-08 | 上海新亚电焊机有限公司 | Inverter electric welding machine device with adjustable electric arc |
| CN203973032U (en) * | 2014-06-25 | 2014-12-03 | 常州海杰冶金机械制造有限公司 | Gas shielded arc welding one side welding with back formation gas shield structure |
| CN204954136U (en) * | 2015-09-18 | 2016-01-13 | 云南工程建设总承包公司 | Extremely gas shielded arc welding welder that melts with hollow tungsten utmost point |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109332858A (en) * | 2018-11-28 | 2019-02-15 | 江苏科技大学 | A kind of hollow tungsten electrode profundity melts the welding method of TIG filler wire welding slab |
| CN109332858B (en) * | 2018-11-28 | 2022-04-01 | 江苏科技大学 | Welding method for hollow tungsten ultra-high deep-melting TIG filler wire welding thick plate |
| CN114226929A (en) * | 2021-12-21 | 2022-03-25 | 武汉纳瑞格智能设备有限公司 | High-efficiency cooling plate type narrow-gap MAG/MIG welding gun |
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| Publication number | Publication date |
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| CN106392276B (en) | 2019-04-30 |
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