CN109483021A - A kind of double tungsten electrode pulse TIG welding methods - Google Patents
A kind of double tungsten electrode pulse TIG welding methods Download PDFInfo
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- CN109483021A CN109483021A CN201811388761.3A CN201811388761A CN109483021A CN 109483021 A CN109483021 A CN 109483021A CN 201811388761 A CN201811388761 A CN 201811388761A CN 109483021 A CN109483021 A CN 109483021A
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- welding 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
- B23K9/16—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
- B23K9/1675—Arc welding or cutting making use of shielding gas and of a non-consumable electrode making use of several electrodes
Abstract
The invention discloses a kind of double tungsten electrode pulse TIG welding methods, the method is set with two welding guns of the first welding gun and the second welding gun, method is comprising steps of S1, adjusted first welding gun and the second welding gun by the first spacing of setting, and adjust the position of the first welding gun and the second welding gun and welded workpiece by the second spacing of setting；S2, connect with the source of welding current of the first welding gun and the second welding gun, while inputting protective gas in the first welding gun and the second welding gun；S3, the flow velocity that the first welding gun and the second welding gun are inputted by pre-set velocity control protective gas, the first welding gun generate electric arc and couple and weld on welded workpiece surface with the second welding gun generation electric arc；Meanwhile the first welding gun and the second welding gun are vertically arranged by the present invention, so that effect is best after the first welding gun and the coupling of the second welding gun electric arc；The present invention can be improved double tungsten electrode TIG weldering maximum allowable electric currents, and effectively reduce tungsten electrode scaling loss, and control the input of heat in welding process, guarantee that workpiece obtains uniform throat depth.
Description
Technical field
The invention belongs to TIG (Tungsten Inert Gas Welding, argon tungsten-arc welding) welding technology fields, especially
It is related to a kind of double tungsten electrode pulse TIG welding methods.
Background technique
Tig Welding process is stablized, and welding quality is preferable.But there are apparent defects for this method: the single track of welding
Weld penetration is shallow, and deposition rate is low and is not suitable for thick plates.Improve TIG weldering welding efficiency, while keep TIG welding line at
The advantage that type is good, welding quality is high is always the goal in research of Welder author, occur it is many by TIG weld based on height
Imitate welding method.
Electrode TIG has deposition rate height, groove adaptable and weld seam as a kind of efficient welding method
The advantages that shaping surface is good, and double tungsten electrode TIG weldering can significantly reduce arc pressure, be pushed further into argon tungsten-arc welding skill
The development of art.It is two in electrode TIG welding gun next to mutually independent tungsten electrode, respectively individually power supply, size of current are only
It is vertical to adjust.Tungsten electrode spacing is as an adjustable welding parameter, and adjustable range is between 2-6mm.But since double tungsten electrodes weld
Rifle needs special design, has certain manufacturing cost.And the spacing of two tungsten electrodes is closer, for the more demanding of insulation.
Using two common tungsten electrodes, two source of welding current power supplies under certain angle, tungsten electrode spacing condition, make two
Tungsten electrode arc is coupled.The arc temperature coupled at this time improves, and arc zone is compressed, and the energy of electric arc more concentrates on arc
Column area.Deposition rate is high at this time, and appearance of weld is good.But since the current-carrying capability of tungsten electrode is limited, maximum that when welding can use
Welding current is smaller.When two tungsten electrode arcs are coupled simultaneously, the temperature of electric arc is improved to some extent, and tungsten electrode is easy to burn
Damage causes welding heat input small, influences the welding efficiency of electrode TIG.
Summary of the invention
The main purpose of the present invention is to provide a kind of double tungsten electrode pulse TIG welding methods, this method can be controlled in real time
The heat input that needs are welded in welding process processed, to solve the problems, such as that the easy scaling loss of tungsten electrode, welding efficiency are low in the prior art,
Specific technical solution is as follows:
A kind of double tungsten electrode pulse TIG welding methods, the method are set with two welding guns of the first welding gun and the second welding gun, the method
Comprising steps of
S1, first welding gun and the second welding gun are adjusted by the first spacing of setting, and adjust described first by the second spacing of setting
The position of welding gun and the second welding gun and welded workpiece；
S2, connect with the source of welding current of first welding gun and the second welding gun, while in first welding gun and the second welding gun
Input protective gas；
S3, the flow velocity that the protective gas inputs first welding gun and the second welding gun, first weldering are controlled by pre-set velocity
Rifle generates electric arc and couples and weld on welded workpiece surface with second welding gun generation electric arc.
A further improvement of the present invention is that further comprising the steps of: adjustment first welding gun and the second weldering in step sl
Rifle is vertically arranged.
A further improvement of the present invention is that the source of welding current of first welding gun and the second welding gun is pulse current.
A further improvement of the present invention is that further comprising the steps of: the peak value electricity for adjusting the source of welding current in step s3
Stream, background current, pulse frequency and duty ratio.
A further improvement of the present invention is that being set in the tungsten electrode tip of setting and second welding gun in first welding gun
Setting between tungsten electrode tip distance is 8-12mm, in the tungsten electrode and second welding gun being arranged in first welding gun setting tungsten electrode with
The distance of welded workpiece is 3-5mm.
A further improvement of the present invention is that the protective gas of first welding gun and second welding gun input speed
Rate is consistent, is 12-18L/min；And the protective gas is inert protective gas.
Double tungsten electrode pulse TIG welding methods of the invention are treated by setting two welding guns of the first welding gun and the second welding gun
Welding workpiece carries out welding processing, and vertical with the second welding gun according to the first welding gun, the first welding gun and the second leaded middle tungsten electrode point
End horizontal distance is 8mm, is configured with the vertical range on welded workpiece surface for 4mm, and be filled in the welding process lazy
Property protective gas；When welding, one of welding gun input pulse electric current in the first welding gun and the second welding gun, an input non-pulse
Electric current, and the electric arc for generating the first welding gun and the second welding gun tungsten electrode is coupled in workpiece surface, is then started to welded workpiece
It is subjected to；Meanwhile the present invention is in the welding process, peak value electricity that can according to the actual situation in appropriate adjustment welding process
Stream, background current, pulse frequency and duty ratio etc., to improve the quality of weld seam；Compared with prior art, the present invention passes through arteries and veins
Electric current is rushed to control the first welding gun and the second welding gun and generate electric arc for welding, the base value of pulse current can be used by controlling
The parameters such as electric current, peak point current, current pulse frequency and duty ratio control the heat inputs of two welding guns, reach control with this
Arc temperature and the case where avoiding tungsten electrode scaling loss generation, and improve the efficiency and quality of welding.
Detailed description of the invention
Fig. 1 is double tungsten electrode pulse TIG welding method schematic diagrams described in the embodiment of the present invention；
Fig. 2 ~ Fig. 5 is that the arc shape of double tungsten pulse-couples described in the embodiment of the present invention illustrates meaning.
Identifier declaration: 1- workpiece, the 2- source of welding current, the first welding gun of 3-, the second welding gun of 4-, 5- coupled arc.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
Refering to fig. 1 ~ Fig. 5 provides a kind of double tungsten electrode pulse TIG welding methods in embodiments of the present invention, and the method is set
Surely there are 4 two welding guns of the first welding gun 3 and the second welding gun, method specifically includes that steps are as follows:
S1, the first welding gun 3 and the second welding gun 4 are adjusted by the first spacing of setting, and adjust 3 He of the first welding gun by the second spacing of setting
The position of second welding gun 4 and welded workpiece 1；
In embodiments of the present invention, in order to enable the electric arc that the first welding gun 3 and the second welding gun 4 generate when welding has good weldering
Effect is connect, the first welding gun 3 and the second welding gun 4 are vertically arranged, meanwhile, the tungsten electrode tip being arranged in the first welding gun 3 of setting and the
Horizontal distance and the interior tungsten electrode being arranged of the first welding gun 3 and the interior setting of the second welding gun 4 between setting tungsten electrode tip in two welding guns 4
The vertical range of tungsten electrode and welded workpiece 1；Preferably, the present invention is by tungsten in tungsten electrode tip in the first welding gun 3 and the second welding gun 4
The horizontal distance of pole tip is set as 8mm, and the vertical range of tungsten electrode and welded workpiece 1 is 4mm in two welding guns.
S2, connect with the source of welding current 2 of the first welding gun 3 and the second welding gun 4, while in the first welding gun 3 and the second welding gun 4
Input protective gas；And S3, the flow velocity for controlling by pre-set velocity protective gas input the first welding gun and the second welding gun, institute
It states the first welding gun generation electric arc and couples and weld on welded workpiece surface with second welding gun generation electric arc.
Specifically, in embodiment, if the source of welding current 2 of the first welding gun 3 is pulse current, the welding of the second welding gun 4
Power supply 2 is non-pulse electric current；Conversely, if the source of welding current 2 of the first welding gun 3 is non-pulse electric current, the welding electricity of the second welding gun 4
Source 2 is pulse current.
The present invention guarantees the quality after welding to promote the stability of welding process, also needs to the first welding gun 3 and the
The inert protective gas such as argon gas is inputted in two welding guns 4, and guarantees the protective gas of the first welding gun 3 and the second welding gun 4
Input rate is consistent；Preferably, the present embodiment inputs argon gas as protective gas using 18L/min size rate.
The present invention is in welding, by the electric arc that tungsten electrode generates in the electric arc and the second welding gun 4 of tungsten electrode generation in the first welding gun 3
Coupling generates coupled arc 5 and is subjected to；Specifically, due in the present invention source of welding current 2 generate be pulse current, institute
Can be welded in the present invention by adjusting the peak point current of the source of welding current 2, background current, pulse frequency and duty ratio to control
Heat input in termination process, to adapt to the welding operation of different requirements；Moreover, because heat input is controllable, so can have
The case where effect avoids tungsten electrode from being burnt because of high temperature, meanwhile, be conducive to the promotion of the quality and welding efficiency of welding.
Double tungsten electrode pulse TIG welding methods of the invention are treated by setting two welding guns of the first welding gun and the second welding gun
Welding workpiece carries out welding processing, and vertical with the second welding gun according to the first welding gun, the first welding gun and the second leaded middle tungsten electrode point
End horizontal distance is 8mm, is configured with the vertical range on welded workpiece surface for 4mm, and be filled in the welding process lazy
Property protective gas；When welding, the first welding gun and the equal input pulse electric current of the second welding gun, and make the first welding gun and the second welding gun tungsten electrode
The electric arc of generation is coupled in workpiece surface, then starts to be subjected to welded workpiece；Meanwhile the present invention was welding
Cheng Zhong, peak point current, background current, pulse frequency and duty ratio that can according to the actual situation in appropriate adjustment welding process
Deng to improve the quality of weld seam；Compared with prior art, the present invention controls the first welding gun and the second welding gun by pulse current
Electric arc is generated for welding, can by control using the background current of pulse current, peak point current, current pulse frequency and
The parameters such as duty ratio are come hair the case where controlling the heat inputs of two welding guns, reached control arc temperature with this and avoided tungsten electrode scaling loss
It is raw, and improve the efficiency and quality of welding.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the scope of the patents of the invention, although referring to aforementioned reality
Applying example, invention is explained in detail, still can be to aforementioned each tool for coming for those skilled in the art
Technical solution documented by body embodiment is modified, or carries out equivalence replacement to part of technical characteristic.All benefits
The equivalent structure made of description of the invention and accompanying drawing content is directly or indirectly used in other related technical areas,
Similarly within the invention patent protection scope.
Claims (6)
1. a kind of double tungsten electrode pulse TIG welding methods, the method is set with two welding guns of the first welding gun and the second welding gun, feature
It is, the method includes the steps:
S1, first welding gun and the second welding gun are adjusted by the first spacing of setting, and adjust described first by the second spacing of setting
The position of welding gun and the second welding gun and welded workpiece；
S2, connect with the source of welding current of first welding gun and the second welding gun, while in first welding gun and the second welding gun
Input protective gas；
S3, the flow velocity that the protective gas inputs first welding gun and the second welding gun, first weldering are controlled by pre-set velocity
Rifle generates electric arc and couples and weld on welded workpiece surface with second welding gun generation electric arc.
2. a kind of double tungsten electrode pulse TIG welding methods according to claim 1, which is characterized in that further include in step sl
Step: adjustment first welding gun and the second welding gun are vertically arranged.
3. a kind of double tungsten electrode pulse TIG welding methods according to claim 1, which is characterized in that first welding gun and
The source of welding current of two welding guns is pulse current.
4. a kind of double tungsten electrode pulse TIG welding methods according to claim 3, which is characterized in that further include in step s3
Step: peak point current, background current, pulse frequency and the duty ratio of the source of welding current are adjusted.
5. a kind of double tungsten electrode pulse TIG welding methods according to claim 1, which is characterized in that set in first welding gun
Distance is 8-12mm between setting tungsten electrode tip in the tungsten electrode tip set and second welding gun, is arranged in first welding gun
It is 3-5mm at a distance from tungsten electrode and welded workpiece that tungsten electrode is arranged in second welding gun.
6. a kind of described in any item double tungsten electrode pulse TIG welding methods according to claim 1 ~ 5, which is characterized in that described first
Welding gun is consistent with the protective gas input rate of second welding gun, is 12-18L/min；And the protective gas is
Inert protective gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811388761.3A CN109483021B (en) | 2018-11-21 | 2018-11-21 | Double-tungsten-electrode pulse TIG welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811388761.3A CN109483021B (en) | 2018-11-21 | 2018-11-21 | Double-tungsten-electrode pulse TIG welding method |
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| CN109483021A true CN109483021A (en) | 2019-03-19 |
| CN109483021B CN109483021B (en) | 2022-07-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111755172A (en) * | 2020-05-29 | 2020-10-09 | 广东金桥科技股份有限公司 | Manufacturing method of coaxial cable |
| CN115106622A (en) * | 2022-07-08 | 2022-09-27 | 中国核工业华兴建设有限公司 | Double-tungsten-electrode hot wire TIG automatic welding construction method for stainless steel water tank of nuclear power station |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111755172A (en) * | 2020-05-29 | 2020-10-09 | 广东金桥科技股份有限公司 | Manufacturing method of coaxial cable |
| CN115106622A (en) * | 2022-07-08 | 2022-09-27 | 中国核工业华兴建设有限公司 | Double-tungsten-electrode hot wire TIG automatic welding construction method for stainless steel water tank of nuclear power station |
| CN115106622B (en) * | 2022-07-08 | 2024-02-02 | 中国核工业华兴建设有限公司 | Nuclear power station stainless steel pool double tungsten electrode hot wire TIG automatic welding construction method |
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| CN109483021B (en) | 2022-07-08 |
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