CN109202225A - Fine caliber pipeline double sides double arc welding system and method based on K-TIG - Google Patents
Fine caliber pipeline double sides double arc welding system and method based on K-TIG Download PDFInfo
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- CN109202225A CN109202225A CN201811133782.0A CN201811133782A CN109202225A CN 109202225 A CN109202225 A CN 109202225A CN 201811133782 A CN201811133782 A CN 201811133782A CN 109202225 A CN109202225 A CN 109202225A
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- welding
- tig
- welded
- road
- tungsten electrode
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
- B23K9/0286—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections with an electrode moving around the fixed tube during the welding operation
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention belongs to welding technology fields, disclose a kind of fine caliber pipeline double sides double arc welding system and method based on K-TIG, the cathode of welding machine electric power is connected with K-TIG welding gun, anode is connected with tungsten electrode ring, tungsten electrode ring is arranged inside road to be welded by insulating bar, and tungsten electrode ring and K-TIG welding gun is made to be divided into road to be welded abutment joint two sides；First tungsten electrode ring is contacted with road to be welded when welding, the source of welding current exports the welding current starting the arc；Separate tungsten electrode ring with road to be welded inner wall, ignite electric arc；K-TIG welding gun is moved in a circle along road to be welded abutment joint, while increasing welding current, welding is completed after rounding.The present invention combines original K-TIG technique with two-sided double arc-through holes Welding, perforation electric current is greatly lowered, and the deformation extent of workpiece is reduced by double-sided arc welding technique；Have many advantages, such as that equipment operating cost is low, process conditions are easily achieved, the weld preparation time is short.
Description
Technical field
The present invention relates to welding technology fields, in particular to a kind of welding system based on K-TIG and welding side
Method.
Background technique
Pipeline transportation is as one of railway, highway, sea-freight, civil aviation and the big carrier of long distance pipeline five, in its people
It is played an important role in economic construction.City and industrial expansion require to be laid with a large amount of pipeline.Grid is necessary at present
It is set up by welding manner, therefore guarantees that the welding quality of pipe fitting is particularly critical.Currently, due to the flexibility of manual welding
And the reasons such as of less demanding to equipment, still based on manual welding, its feature is exactly efficiency for the welding of yard piping
It is high and high to the adaptability of environment.
K-TIG (the efficient fusion penetration argon arc welding gun of lockhole) is a kind of based on tradition TIG welding gun, generates yin by water cooling tungsten electrode
Pole blockage effect cooperates the novel perforations welding technique of larger welding current.It is proved by a large amount of engineer testing: K-
TIG weld technique is suitable for welding the metal material of lower thermal conductivity, but since the free electric arc mean energy density of use is low, small
Hole stability deteriorates with the increase of workpiece thermal conductivity, influences the stable formation of weld seam, may generate overlap, indent, not weld
The defects of saturating, and the deformation extent of workpiece is larger, seriously affects the welding quality of fine caliber pipeline.
Summary of the invention
The present invention is to solve the technology that aperture stability deteriorates with the increase of workpiece thermal conductivity in K-TIG weldering is asked
Topic, provide a kind of fine caliber pipeline double sides double arc welding system and method based on K-TIG, by original K-TIG technique with
Two-sided double arc-through holes Welding combines, and perforation electric current is greatly lowered, and reduce workpiece by double-sided arc welding technique
Deformation extent；Have many advantages, such as that equipment operating cost is low, process conditions are easily achieved, the weld preparation time is short.
In order to solve the above-mentioned technical problem, the present invention is achieved by technical solution below:
A kind of fine caliber pipeline double sides double arc welding system based on K-TIG, including the source of welding current, the welding machine electric power
Cathode is connected with K-TIG welding gun, and the anode of the welding machine electric power is connected with the tungsten electrode ring, and the tungsten electrode ring is fixed on described exhausted
On edge bar, the insulating bar is arranged inside road to be welded, make the tungsten electrode ring it is opposite with the K-TIG welding gun be divided by
The two sides of welded tube road abutment joint.
Further, the insulating bar and the road to be welded are coaxial.
A kind of fine caliber pipeline double sides double arc based on K-TIG connects method, which utilizes such as claim 1-2
A kind of fine caliber pipeline double sides double arc welding system based on K-TIG carries out, and includes the following steps:
(1) insulating bar is placed in inside road to be welded, and make to be fixed on the tungsten electrode ring on the insulating bar with
The opposite two sides for being divided into road to be welded abutment joint of the K-TIG welding gun；
(2) the mobile insulating bar contacts the tungsten electrode ring with road to be welded, and the source of welding current exports striking current,
Electric arc is lighted between the K-TIG welding gun and road to be welded, and forms current loop；
(3) the mobile insulating bar separates the tungsten electrode ring with road to be welded inner wall, and electric arc is in the tungsten electrode ring and quilt
Welded tube ignites between road, completes Igniting pattern, two-sided electric arc is made to burn between the tungsten electrode ring and the K-TIG welding gun；
(4) welding machine electric power is exported according to welding current, the K-TIG welding gun is along road to be welded abutment joint to weld
Speed moves in a circle, and after rounding, that is, completes the welding to road to be welded.
The beneficial effects of the present invention are:
Fine caliber pipeline double sides double arc welding system and method based on K-TIG of the invention, by the two-sided double arc-throughs of K-TIG
Hole welding method is welded applied to fine caliber pipeline, and welding arc burns between the tungsten electrode ring in external K-TIG welding gun and pipe,
Welding current completely extends across weld seam, and generates a magnetic field, so that the Lorentz force of charged particle dramatically increases in arc column, thus
Enhance to the pinch effect of electric arc, concentrates energy more, arc force enhancing, compared to single welding gun list Arc Welding Process,
Welding current is greatly lowered, and reduces thermal weld stress, reduces welding stress and distortion.
Detailed description of the invention
Fig. 1 is the knot of the fine caliber pipeline double sides double arc welding system based on K-TIG of embodiment provided by the present invention
Structure schematic diagram (along pipeline radial direction)；
Fig. 2 is the knot of the fine caliber pipeline double sides double arc welding system based on K-TIG of embodiment provided by the present invention
Structure schematic diagram (along pipeline axial direction)；
In figure: 1. welding machine electric powers；2.K-TIG welding gun；3. road to be welded；4. insulating bar；5. tungsten electrode ring.
Specific embodiment
For that can further appreciate that summary of the invention of the invention, feature and effect, the following examples are hereby given, and cooperates attached drawing
Detailed description are as follows:
As depicted in figs. 1 and 2, it is double to disclose a kind of fine caliber pipeline based on K-TIG for one embodiment of the present invention
Twin arc welding welding system in face includes mainly welding machine electric power 1, K-TIG welding gun 2, insulating bar 4, tungsten electrode ring 5, and it is suitable for fine calibers
The nominal diameter of road to be welded 3, this kind of road to be welded 3 is usually no more than 200mm.
The cathode of welding machine electric power 1 is connected with K-TIG welding gun 2, and the anode of welding machine electric power 1 is connected with tungsten electrode ring 5.Tungsten electrode ring 5
It is fixed on insulating bar 4, insulating bar 4 is co-axially located inside road to be welded 3, is oppositely arranged tungsten electrode ring 5 and K-TIG welding gun 2
Central axis in the two sides of 3 abutment joint of road to be welded, that is, K-TIG welding gun 2 passes through inside abutment joint and road to be welded 3
Tungsten electrode ring 5 intersects.
One embodiment of the present invention also discloses the fine caliber pipeline double sides double arc using above-mentioned based on K-TIG and connects
The welding method of system comprising following steps:
(1) the distance between 3 abutment joint of road to be welded and nozzle are measured, by insulating bar 4 be placed in inside road to be welded 3 and with
Road to be welded 3 is coaxially disposed, and insulating bar 4 protrudes into 3 corresponding length of road to be welded, make the tungsten electrode ring 5 being fixed on insulating bar 4 with
K-TIG welding gun 2 is relatively arranged on the two sides of 3 abutment joint of road to be welded, that is, the central axis of K-TIG welding gun 2 passes through docking
Seam intersects with the tungsten electrode ring 5 inside road to be welded 3；
(2) in Igniting pattern, mobile insulating bar 4 contacts tungsten electrode ring 5 with 3 inner wall of road to be welded, and the source of welding current 1 exports
Lesser striking current (generally 10A~30A), lights electric arc between the K-TIG welding gun 2 and road to be welded 3, and formed
The current loop of 1 cathode of welding machine electric power-5-welding machine electric power of K-TIG welding gun 2-road to be welded, 3-tungsten electrode ring, 1 anode；
(3) mobile insulating bar 4 keeps insulating bar 4 and road to be welded 3 coaxial, thus tungsten electrode ring 5 and 3 inner wall of road to be welded point
From, directly ignite electric arc between 3 inner wall of tungsten electrode ring 5 and road to be welded, complete Igniting pattern, two-sided electric arc tungsten electrode ring 5 with
It burns between K-TIG welding gun 2；
(4) after two-sided electric arc successful ignition, K-TIG welding gun 2 is corresponded to the welding speed of operating condition along 3 abutment joint of road to be welded
Degree moves in a circle, while the welding current that the source of welding current 1 exports being increased to the welding current of corresponding operating condition, rounds
Afterwards, that is, the welding to road to be welded 3 is completed.Wherein, speed of welding and welding current are all depending on weldment material and thickness, here
Without limitation.
Fine caliber pipeline double sides double arc welding system and method based on K-TIG of the invention, by K-TIG welding gun 2 and tungsten
Polar ring 5 is oppositely positioned in the two sides of 3 abutment joint of road to be welded, and the two poles of the earth with same welding machine electric power 1 are connected directly respectively, can be made
Welding current completely extends across molten bath, does not disperse, and the same direction current in molten bath produces a magnetic field, so that band in arc column
The Lorentz force of charged particle dramatically increases, thus pinch effect of the enhancing to electric arc.In welding process, K-TIG welding gun 2 around
Road to be welded 3 rotates a circle, and welding can be completed.
Although the preferred embodiment of the present invention is described above in conjunction with attached drawing, the invention is not limited to upper
The specific embodiment stated, the above mentioned embodiment is only schematical, be not it is restrictive, this field it is common
Technical staff under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, may be used also
By make it is many in the form of specific transformation, within these are all belonged to the scope of protection of the present invention.
Claims (3)
1. a kind of fine caliber pipeline double sides double arc welding system based on K-TIG, including the source of welding current, which is characterized in that described
The cathode of welding machine electric power is connected with K-TIG welding gun, and the anode of the welding machine electric power is connected with the tungsten electrode ring, and the tungsten electrode ring is solid
It is scheduled on the insulating bar, the insulating bar is arranged inside road to be welded, keeps the tungsten electrode ring opposite with the K-TIG welding gun
The two sides for being divided into road to be welded abutment joint.
2. a kind of fine caliber pipeline double sides double arc welding system based on K-TIG according to claim 1, feature exist
In the insulating bar and the road to be welded are coaxial.
3. a kind of fine caliber pipeline double sides double arc based on K-TIG connects method, which is characterized in that the welding method is utilized as weighed
Benefit requires a kind of fine caliber pipeline double sides double arc welding system progress based on K-TIG described in 1-2, and including walking as follows
It is rapid:
(1) insulating bar is placed in inside road to be welded, and make to be fixed on the tungsten electrode ring on the insulating bar with it is described
The opposite two sides for being divided into road to be welded abutment joint of K-TIG welding gun；
(2) the mobile insulating bar contacts the tungsten electrode ring with road to be welded, and the source of welding current exports striking current, in institute
It states and lights electric arc between K-TIG welding gun and road to be welded, and form current loop；
(3) the mobile insulating bar separates the tungsten electrode ring with road to be welded inner wall, and electric arc is in the tungsten electrode ring and by welded tube
It ignites between road, completes Igniting pattern, two-sided electric arc is made to burn between the tungsten electrode ring and the K-TIG welding gun；
(4) welding machine electric power is exported according to welding current, the K-TIG welding gun is along road to be welded abutment joint with speed of welding
It moves in a circle, after rounding, that is, completes the welding to road to be welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811133782.0A CN109202225B (en) | 2018-09-27 | 2018-09-27 | K-TIG-based double-sided double-arc welding system and method for small-diameter pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811133782.0A CN109202225B (en) | 2018-09-27 | 2018-09-27 | K-TIG-based double-sided double-arc welding system and method for small-diameter pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109202225A true CN109202225A (en) | 2019-01-15 |
| CN109202225B CN109202225B (en) | 2021-02-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811133782.0A Expired - Fee Related CN109202225B (en) | 2018-09-27 | 2018-09-27 | K-TIG-based double-sided double-arc welding system and method for small-diameter pipeline |
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| CN (1) | CN109202225B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03180273A (en) * | 1989-12-07 | 1991-08-06 | Hitachi Seiko Ltd | Fixed pipe automatic welding equipment |
| JPH06328256A (en) * | 1993-05-20 | 1994-11-29 | Tadahiro Omi | Welding head and welding equipment |
| CN103600177A (en) * | 2013-11-25 | 2014-02-26 | 北京工业大学 | Single-power-source VPPA-GTAW binary electric-arc punching welding method |
| WO2014057311A1 (en) * | 2012-10-11 | 2014-04-17 | Gea Aircooled Systems Proprietary Limited | A method and device for butt welding tubes |
| CN104785905A (en) * | 2015-04-01 | 2015-07-22 | 浙江工业大学 | Welding device for preventing welding heat crack and deformation |
| CN106378518A (en) * | 2016-11-30 | 2017-02-08 | 东方电气集团东方锅炉股份有限公司 | TIG welding method used for large-diameter thin-wall stainless steel cylinder workpiece circular seam |
| CN207563891U (en) * | 2017-12-14 | 2018-07-03 | 天津轻工职业技术学院 | A kind of large current load K-TIG welding guns |
-
2018
- 2018-09-27 CN CN201811133782.0A patent/CN109202225B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03180273A (en) * | 1989-12-07 | 1991-08-06 | Hitachi Seiko Ltd | Fixed pipe automatic welding equipment |
| JPH06328256A (en) * | 1993-05-20 | 1994-11-29 | Tadahiro Omi | Welding head and welding equipment |
| WO2014057311A1 (en) * | 2012-10-11 | 2014-04-17 | Gea Aircooled Systems Proprietary Limited | A method and device for butt welding tubes |
| CN103600177A (en) * | 2013-11-25 | 2014-02-26 | 北京工业大学 | Single-power-source VPPA-GTAW binary electric-arc punching welding method |
| CN104785905A (en) * | 2015-04-01 | 2015-07-22 | 浙江工业大学 | Welding device for preventing welding heat crack and deformation |
| CN106378518A (en) * | 2016-11-30 | 2017-02-08 | 东方电气集团东方锅炉股份有限公司 | TIG welding method used for large-diameter thin-wall stainless steel cylinder workpiece circular seam |
| CN207563891U (en) * | 2017-12-14 | 2018-07-03 | 天津轻工职业技术学院 | A kind of large current load K-TIG welding guns |
Non-Patent Citations (1)
| Title |
|---|
| 崔旭明，李刘合: "单电源双面电弧焊接工艺实验研究", 《热加工工艺》 * |
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| CN109202225B (en) | 2021-02-26 |
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