CN106392276B - A kind of the CoTIG welding gun and welding method of compressible electric arc - Google Patents
A kind of the CoTIG welding gun and welding method of compressible electric arc Download PDFInfo
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- CN106392276B CN106392276B CN201611030406.XA CN201611030406A CN106392276B CN 106392276 B CN106392276 B CN 106392276B CN 201611030406 A CN201611030406 A CN 201611030406A CN 106392276 B CN106392276 B CN 106392276B
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- nozzle
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- tungsten electrode
- gun
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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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- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The present invention relates to a kind of CoTIG welding gun of compressible electric arc and welding methods, the welding gun hereinafter referred to as CoTIG, wherein welding gun includes gun body, hollow tungsten electrode, the front end of the gun body, which can be longitudinally moved, is connected with nozzle, through-hole is vertically arranged in the middle part of the gun body, the hollow tungsten electrode is fixedly installed in the through-hole, and the front end of hollow tungsten electrode is pierced by the nozzle, and the middle part of the hollow tungsten electrode is longitudinally through to be provided with welding wire hole；The nozzle is internally provided with cooling duct, and the both ends of the cooling duct have been respectively communicated with water inlet pipe, outlet pipe.On the basis of HiTIG welding gun, the efficiency of welding is improved, optimizes the weldquality of welding.The compress mode for integrating electric arc changes the electric arc compression of previous single effect, realizes dual electric arc compression, has very big breakthrough on the thickness of welding base metal, can weld thicker plate, it can also be used to the welding processing of large-sized sheet material.
Description
Technical field
The invention belongs to TIG weld technical field, the CoTIG welding gun and welding method of in particular a kind of compressible electric arc.
Background technique
TIG welds (Tungsten Inert Gas Welding), also known as non-melt pole inert gas tungsten electrode protection weldering.By
In the protection of argon gas, can air-isolation to the oxidation of fusing metal, so, it is easy to oxidize that TIG weldering is widely used in welding
Non-ferrous metal aluminium, magnesium etc. and its alloy, stainless steel, high temperature alloy, titanium or titanium alloy, there are also the active metal of infusibility (such as molybdenum,
Niobium, zirconium etc.), and the common materials such as general carbon steel, low-alloy steel are not adopted generally in addition to the exigent occasion of welding quality
It is welded with TIG.But TIG weldering the problems such as that there are fusion penetrations is shallow, and deposition rate is small, and production efficiency is relatively low.
Coaxial hot wire TIG welding (HiTIG) is the device for integrating TIG, MIG, MAG Welding advantage, and TIG weldering passes through sky
Heart depressed place pole carries out automatic feeding, and inert gas carries out preheating and gas shield, tool as protective gas before welding wire enters molten bath
There is the characteristics of 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 greatly, to further increase HiTIG welding
Primary through welding ability, using compression arc device.
Summary of the invention
The purpose of the present invention is to provide a kind of CoTIG welding gun and welding methods, install compression arc in HiTIG welding gun
Device, it can be achieved that the mechanical compression of electric arc and the electric arc twice being heat-shrinked compression, thus obtain higher energy density it is equal from
Subarc is welded；It is realized especially by following technical scheme:
A kind of CoTIG welding gun, including gun body, hollow tungsten electrode, the front end of the gun body, which can be longitudinally moved, is connected with nozzle,
It is vertically arranged with through-hole in the middle part of the gun body, the hollow tungsten electrode is fixedly installed in the through-hole, and before hollow tungsten electrode
End is pierced by the nozzle, and the middle part of the hollow tungsten electrode is longitudinally through to be provided with welding wire hole；Being internally provided with for the nozzle is cold
But channel, the both ends of the cooling duct have been respectively communicated with water inlet pipe, outlet pipe.
The CoTIG welding gun, further design is that the end that the nozzle is connect with the gun body, which is provided with, leads
To slot, the front end of the gun body is plugged in the guide slots；Alternatively, the front end of the gun body is provided with guide slots,
The respective end of the nozzle is plugged in the guide slots, so that the nozzle, which can be longitudinally moved, is connected to the rifle
Body.
The CoTIG welding gun, further design is that the front end periphery of the gun body is vertically arranged at least one
The front end section of positioning groove, the section of the guide slots of the nozzle-end and the gun body is adapted, thus the gun body
Front end be plugged in the guide slots and make nozzle mobile relative to the gun body.
The CoTIG welding gun, further design is that the front of the gun body is fixedly installed coaxial with gun body
The edge of end cap, the end cap is connected with the porcelain head of tubular, so that the porcelain head covers in the outside of the nozzle.
The CoTIG welding gun, further design is that the edge sides of the end cap are provided with screw thread, the porcelain
The inner wall of head is threadingly attached on the edge of the end cap.
The CoTIG welding gun, further design is, threaded hole, the screw thread are provided in the middle part of the end cap
Lead screw is threaded in hole, one end of lead screw is connect with the nozzle, and the other end is pierced by the end cap, rotate the lead screw from
And the nozzle is mobile relative to the gun body under the drawing of lead screw.
The CoTIG welding gun, further design is that the nozzle is radially distributed with close to the end face of the gun body
There is the mounting groove of socket in the side of nozzle, a lead screw attachment base is via the socket grafting and is fixedly installed on the peace
In tankage, the respective end of the lead screw is connected in the lead screw attachment base.
A kind of welding method, the process employs a kind of CoTIG welding gun, which includes gun body, hollow tungsten electrode, the rifle
The front end of body, which can be longitudinally moved, is connected with nozzle, and through-hole is vertically arranged in the middle part of the gun body, and the hollow tungsten electrode fixation is set
It is placed in the through-hole, and the front end of hollow tungsten electrode is pierced by the nozzle, the longitudinally through setting in middle part of the hollow tungsten electrode
There is welding wire hole；The nozzle is internally provided with cooling duct, and the both ends of the cooling duct have been respectively communicated with water inlet pipe, water outlet
Pipe；This method specifically comprises the following steps: the side that the welding gun is placed in welded workpiece, and nozzle and tungsten electrode with to
Soldered is opposite；Welding wire enters the welding wire hole inside tungsten electrode through wire feeder；Coolant is passed through in water inlet pipe, coolant is through cooling
It is flowed out after the temperature of channel reduction nozzle from outlet pipe, be powered the starting the arc between tungsten electrode and the soldered of welded workpiece；In the starting the arc
Later, nozzle is moved towards soldered direction, and restriction arc column diameter realizes the first compression of electric arc；At this point, nozzle is in coolant
Under the action of, inner wall sets up one layer of cold air film, to improve the current density of arc column, reduces arc column conductive segment, realizes electricity
The second-compressed of arc；After the completion of welding, then by nozzle towards far from the movement of soldered direction, end welding sequence.
Advantages of the present invention and good effect are as follows:
On the basis of HiTIG welding gun, the efficiency of welding is improved, optimizes the weldquality of welding.Integrate electric arc
Compress mode changes the electric arc compression of previous single effect, realizes dual electric arc compression, has on the thickness of welding base metal
Very big breakthrough can weld thicker plate, it can also be used to the welding processing of large-sized sheet material.When welding, since its electric arc is endured
Degree is big, energy density is high, there is a stronger electric arc to penetrate ability, significantly improves welding efficiency.
Detailed description of the invention
The component structural schematic diagram of Fig. 1 embodiment of the present invention
Fig. 2 is embodiment schematic diagram of internal structure.
Fig. 3 embodiment nozzle and schematic diagram of 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 pedestal, 4- welding wire, 5- nozzle, 6- threaded hole
, 7- gun body, 8- gun body cooling water pipe, 9- porcelain head, 10- water inlet pipe, 11- outlet pipe.
Specific embodiment
It is further illustrated below in conjunction with Figure of description technical solution of the present invention:
In conjunction with shown in Fig. 1-Fig. 4, which includes gun body 7, hollow tungsten electrode 1, and the front end of gun body can be longitudinally moved
It is connected with nozzle 5, is vertically arranged with through-hole in the middle part of gun body, hollow tungsten electrode 1 is fixedly installed in through-hole, and hollow tungsten electrode 1
Front end is pierced by nozzle, and the middle part of hollow tungsten electrode is longitudinally through to be provided with welding wire hole；Nozzle is internally provided with cooling duct (specifically
Position is in water inlet pipe, outlet pipe in figure and is not drawn into figure between the end in nozzle), the both ends of cooling duct connect respectively
It is connected with water inlet pipe 10, outlet pipe 11.Wherein nozzle specifically selects chromium-zirconium-copper constricting nozzle, and it is cooling that gun body itself is also connected with gun body
Water pipe 8.In order to avoid gun body cooling water pipe 8 and water inlet pipe, outlet pipe are obscured in the attached drawing of part, gun body cooling water pipe is concealed
It is unmarked.
Corresponding welding method specifically comprises the following steps: the side that welding gun is placed in welded workpiece, and nozzle with
And tungsten electrode is opposite with seam to be welded；Welding wire 4 enters the welding wire hole inside tungsten electrode through wire feeder；Coolant is passed through in water inlet pipe,
Coolant flows out after cooling duct reduces the temperature of nozzle from outlet pipe, is powered between tungsten electrode and the soldered of welded workpiece
The starting the arc；After the starting the arc, nozzle is moved towards soldered direction, and restriction arc column diameter realizes the first compression of electric arc；At this point,
For nozzle under the action of coolant, inner wall sets up one layer of cold air film, to improve the 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 by nozzle towards far from the movement of soldered direction, end welding sequence.
The end that nozzle 5 is connect with gun body is provided with guide slots 51, and the front end of gun body is plugged in guide slots 51；When
So, the two may be reversed setting, the front end of gun body be provided with guide slots, the respective end of nozzle is plugged on guide slots
In, so that nozzle, which can be longitudinally moved, is connected to gun body.
The front end periphery of gun body 7 is vertically arranged at least one positioning groove 71, is actually symmetrically arranged in figure multiple
Positioning groove 71, so that the front end of gun body is in spline-like, the section and the front end section phase of gun body of the guide slots of nozzle-end
It adapts to, makes nozzle mobile relative to gun body so that the front end of gun body is plugged in guide slots.
The front 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 inner wall of porcelain head is threadingly attached to end cap
On edge.
It is provided with threaded hole in the middle part of end cap, lead screw 2 is threaded in threaded hole, one end of lead screw is connect with nozzle 5,
The other end is pierced by end cap 72 and is provided with knob 21, and rotating threaded shaft moves under the drawing of lead screw relative to gun body to nozzle
It is dynamic.Specifically, nozzle is radially distributed with the mounting groove 52 for having socket in the side of nozzle, lead screw connection close to the end face of gun body
Seat 3 is via socket grafting and is fixedly installed in mounting groove, and the respective end of lead screw is connected in lead screw attachment base 3.
The present invention improves the efficiency of welding on the basis of HiTIG welding gun, optimizes the weldquality of welding.Integration
The compress mode of electric arc changes the electric arc compression of previous single effect, dual electric arc compression is realized, in the thickness of welding base metal
On have very big breakthrough, thicker plate can be welded, it can also be used to the welding processing of large-sized sheet material.When welding, due to it
Arc stiffness is big, energy density is high, there is a stronger electric arc to penetrate ability, significantly improves welding efficiency.
Claims (6)
1. a kind of CoTIG welding gun, it is characterised in that: including gun body, hollow tungsten electrode, the front end of the gun body be can be longitudinally moved
It is connected with nozzle, is vertically arranged with through-hole in the middle part of the gun body, the hollow tungsten electrode is fixedly installed in the through-hole, and empty
The front end of heart tungsten electrode is pierced by the nozzle, and the middle part of the hollow tungsten electrode is longitudinally through to be provided with welding wire hole；The nozzle it is interior
Portion is provided with cooling duct, and the both ends of the cooling duct have been respectively communicated with water inlet pipe, outlet pipe；The nozzle and the gun body
The end of connection is provided with guide slots, and the front end of the gun body is plugged in the guide slots；Alternatively, before the gun body
End is provided with guide slots, and the respective end of the nozzle is plugged in the guide slots, so that the nozzle can be moved longitudinally
It is connected to the gun body dynamicly；The front end periphery of the gun body is vertically arranged at least one positioning groove, the nozzle-end
Guide slots section and the gun body front end section be adapted, so that the front end of the gun body is plugged in the guide groove
Make nozzle can be relative to mobile with the gun body in hole.
2. CoTI G welding gun according to claim 1, which is characterized in that the front of the gun body is fixedly installed and gun body
The edge of coaxial end cap, the end cap is connected with the porcelain head of tubular, so that the porcelain head covers in the outside of the nozzle.
3. CoTIG welding gun according to claim 2, which is characterized in that the edge sides of the end cap are provided with screw thread, institute
The inner wall for stating porcelain head is threadingly attached on the edge of the end cap.
4. CoTIG welding gun according to claim 2, which is characterized in that threaded hole is provided in the middle part of the end cap, it is described
Lead screw is threaded in threaded hole, one end of lead screw is connect with the nozzle, and the other end is pierced by the end cap, rotates the silk
Thick stick is mobile relative to the gun body under the drawing of lead screw to the nozzle.
5. CoTIG welding gun according to claim 4, which is characterized in that the nozzle is radial close to the end face of the gun body
The mounting groove that there is socket in the side of nozzle is distributed with, a lead screw attachment base is via the socket grafting and is fixedly installed on
In the mounting groove, the respective end of the lead screw is connected in the lead screw attachment base.
6. a kind of welding method, which is characterized in that the process employs a kind of CoTIG welding gun, which includes gun body, hollow tungsten
Pole, the front end of the gun body, which can be longitudinally moved, is connected with nozzle, is vertically arranged with through-hole in the middle part of the gun body, described hollow
Tungsten electrode is fixedly installed in the through-hole, and the front end of hollow tungsten electrode is pierced by the nozzle, and the middle part of the hollow tungsten electrode is vertical
Perforation is provided with welding wire hole；The nozzle is internally provided with cooling duct, and the both ends of the cooling duct have been respectively communicated with
Water inlet pipe, outlet pipe；This method specifically comprises the following steps: side and nozzle that the welding gun is placed in welded workpiece
And tungsten electrode is opposite with seam to be welded；Welding wire enters the welding wire hole inside tungsten electrode through wire feeder；Coolant is passed through in water inlet pipe,
Coolant flows out after cooling duct reduces the temperature of nozzle from outlet pipe, is powered between tungsten electrode and the soldered of welded workpiece
The starting the arc；It is moved in the rear nozzle of the starting the arc towards soldered direction, restriction arc column diameter realizes the first compression of electric arc；Sprays at this time
For mouth under the action of coolant, inner wall sets up one layer of cold air film, to improve the current density of arc column, reduction arc column is conductive
Section, realizes the second-compressed of electric arc；After the completion of welding, then by nozzle towards far from the movement of soldered direction, end 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 |
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| Publication Number | Publication Date |
|---|---|
| CN106392276A CN106392276A (en) | 2017-02-15 |
| CN106392276B true 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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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
Citations (5)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6852950B2 (en) * | 2002-08-09 | 2005-02-08 | Illinois Tool Works Inc. | Welding gun having a removable nozzle end portion and method for operating same |
-
2016
- 2016-11-22 CN CN201611030406.XA patent/CN106392276B/en active Active
Patent Citations (5)
| 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 |
| 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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| CN106392276A (en) | 2017-02-15 |
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