CN114952005B - Medium-thickness plate targeted laser-assisted TIG deep-melting bottoming welding method and welding device - Google Patents
Medium-thickness plate targeted laser-assisted TIG deep-melting bottoming welding method and welding device Download PDFInfo
- Publication number
- CN114952005B CN114952005B CN202210530312.8A CN202210530312A CN114952005B CN 114952005 B CN114952005 B CN 114952005B CN 202210530312 A CN202210530312 A CN 202210530312A CN 114952005 B CN114952005 B CN 114952005B
- Authority
- CN
- China
- Prior art keywords
- welding
- tig
- laser
- medium plate
- pulse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
- B23K26/348—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma welding
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/60—Preliminary treatment
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to a medium plate targeted laser assisted TIG deep-melting bottoming welding method and a welding device. The welding method comprises the following steps: 1) Cleaning a Y-shaped groove of a workpiece to be welded of the medium plate, and fixing the Y-shaped groove on a welding control platform; 2) A TIG welding gun and a laser welding head are sequentially arranged above the medium plate workpiece to be welded along the welding direction, a gas feeding valve is opened, the TIG welding gun starts an arc, and the TIG welding gun and the laser welding head are used for welding; 3) After the welding is finished, the power supply of the fiber laser is firstly disconnected, then the power supply of the TIG welder is disconnected, and the air supply valve is closed. The invention utilizes low-frequency high-duty ratio pulse TIG current to form an arc melting pool with larger volume and penetration on a medium plate workpiece to be welded, applies targeted pulse laser at the front end of the falling edge of the pulse peak current, penetrates through a liquid metal film at the bottom of the TIG melting pool to form a small hole, realizes full penetration of a welding seam, and can realize reliable full-automatic bottoming single-sided welding double-sided forming of the medium plate without a backing plate.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a medium plate targeting laser-assisted TIG deep-melting bottoming welding method and a welding device.
Background
Nuclear energy is one of the important props for meeting energy supply and ensuring national safety. The nuclear power generation has great advantages in the aspects of technical maturity, economy, sustainability and the like, has no intermittence compared with water power and wind power, is less constrained by natural conditions and the like, and is clean energy capable of replacing fossil energy on a large scale. However, while the nuclear power industry is greatly developed, the nuclear industry in China is faced with new crisis and challenges again, wherein the series of low-emission nuclear waste and post-treatment of spent fuel produced by the production and processing of nuclear fuel supplied to the nuclear power station are short plates of the nuclear industry, and the sustainable development of nuclear energy is limited. According to the closed cycle strategy of nuclear fuel established in the current country, spent fuel discharged from a nuclear reactor is stored in a water tank for a certain time and then is transferred to a spent fuel post-treatment plant for uranium resource recovery, so that the high-level waste is reduced and the toxicity is reduced. In view of safety of human beings and environment, the recycled high level waste is required to be stored by a special container and subjected to permanent geological storage treatment, and the storage container is required to be stored for tens of thousands to hundreds of thousands of years under the ground until the high level waste decays to a nuisance-free level. Therefore, the special requirement of high-low nuclear waste long-period safe storage puts higher stringent demands on the manufacturing quality of nuclear-grade storage containers. The high-quality welding manufacture and reliable quality detection of the storage container are important in ensuring the safe operation of the core, and particularly, brand new high-standard requirements are put forward for the welding manufacture process of the storage container.
At present, manual TIG backing welding and submerged arc filling and cover surface welding processes of a backing lining plate are basically adopted in the nuclear-grade manufacturing container of the medium plate. Because manual TIG priming welding has higher requirements on the welding skill level of welders, manual welding efficiency is low, penetration is small (about 3 mm), uncontrollable factors of welding quality are more, quality safety accidents are easy to cause, and serious accidents such as nuclear waste leakage are easy to cause. Therefore, development of a full-automatic efficient medium plate deep-melting welding method is urgently needed, and the method has very important practical value for efficient and high-quality manufacturing of nuclear-grade containers.
In recent years, the related research shows that the conventional welding method for welding the medium plate mainly comprises plasma welding, wherein the plasma welding can realize single-sided welding double-sided forming of the thin steel plate under the condition of no chamfering, but the steel plate with the thickness of more than 10mm still needs chamfering, the welding gun is large in size, a larger chamfering angle is needed, and the welding filling quantity is greatly increased, so that the welding method is not suitable for backing welding of a nuclear container, and particularly for the nuclear container of the medium plate with the thickness of more than 16 mm. Before welding, a groove and a large blunt edge (more than 5 mm) are formed on the medium steel plate, and the conventional welding mode cannot be used for single full penetration of the large blunt edge of the medium steel plate, so that one-time single-sided welding and double-sided forming cannot be realized, and the problems of low welding efficiency and unstable welding quality are caused.
Disclosure of Invention
The invention aims to provide a medium plate targeted laser assisted TIG deep-melting bottoming welding method, which solves the problems of low welding efficiency, unstable welding quality and non-compliance with the requirement of the bottoming welding technology for manufacturing nuclear-grade containers caused by insufficient single-sided welding and double-sided forming capability due to the fact that large blunt edges cannot be fully melted during welding of a medium plate in the prior art; meanwhile, the invention also aims to provide a welding device using the welding method.
In order to achieve the purpose, the medium plate targeting laser-assisted TIG deep-melting bottoming welding method adopts the following technical scheme: a medium plate targeted laser assisted TIG deep-melting bottoming welding method comprises the following steps:
1) Cleaning a Y-shaped groove of a workpiece to be welded of the medium plate, and fixing the Y-shaped groove on a welding control platform;
2) A TIG welding gun and a laser welding head are sequentially arranged above the medium plate workpiece to be welded along the welding direction, a gas feeding valve is opened, the TIG welding gun starts an arc, and the TIG welding gun and the laser welding head are used for welding;
the method comprises the steps that a TIG welding machine outputs pulse frequency of 1-2.5Hz to a TIG welding gun, low-frequency high-duty ratio pulse rectangular wave current with duty ratio of 75% -85% is output to the TIG welding gun, a medium plate to be welded below the TIG welding gun is melted to form an electric arc molten pool, and liquid metal at the front end of the electric arc molten pool is discharged to the rear end of the electric arc molten pool to form a liquid metal film at the bottom of the electric arc molten pool;
outputting pulse laser to a laser welding head by a fiber laser to apply targeted pulse laser at the front end of the falling edge of a pulse peak current, wherein the action position of a laser spot is positioned at the front end of an electric arc molten pool to impact a liquid metal film at the bottom of the electric arc molten pool to form a 'small hole', and form a full penetration molten pool, wherein the pulse period of the pulse laser is consistent with the pulse current period, and the time of the pulse laser to act on the front end of the electric arc molten pool is 100-250ms;
3) After the welding is finished, the power supply of the fiber laser is firstly disconnected, then the power supply of the TIG welder is disconnected, and the air supply valve is closed.
In step 2), the pulsed laser action arc chute phase is between about 100 and 300ms before the pulse peak current action chute falling edge.
In the step 2), the TIG welding gun is placed perpendicular to a to-be-welded workpiece of the medium plate, and an included angle between a laser beam output by the laser welding head and the central line of a tungsten electrode of the TIG welding gun is 25-35 degrees.
In the step 2), during welding, a TIG welding gun is placed at the center of a Y-shaped groove of a workpiece to be welded of a medium plate, and the tungsten electrode of the TIG welding gun is 1-2mm higher than the upper edge of the blunt edge.
The welding device using the welding method adopts the following technical scheme: the welding device using the welding method comprises a pulse TIG welding machine, a TIG welding gun, an optical fiber laser, a laser welding head and a welding control platform, wherein the TIG welding gun and the laser welding head are positioned above the welding control platform and are sequentially arranged along the welding direction;
the welding control platform is used for fixing a workpiece to be welded of the medium plate;
the TIG welding machine is used for outputting pulse frequency of 1-2.5Hz to the TIG welding gun, low-frequency high-duty ratio pulse rectangular wave current with duty ratio of 75% -85%, and the medium plate to be welded below the TIG welding gun is melted to form an electric arc molten pool, and liquid metal at the front end of the electric arc molten pool is discharged to the rear end of the electric arc molten pool to form a liquid metal film at the bottom of the electric arc molten pool;
the fiber laser is used for outputting pulse laser to the laser welding head so as to apply targeted pulse laser at the front end of the falling edge of the pulse peak current, the action position of the laser spot is positioned at the front end of the electric arc molten pool so as to impact the liquid metal film at the bottom of the electric arc molten pool to form a 'small hole', and a full penetration molten pool is formed, wherein the pulse period of the pulse laser is consistent with the pulse current period, and the time of the pulse laser acting on the front end of the electric arc molten pool is 100-250ms.
The welding control platform is a movable platform.
The welding device also comprises a waveform output control system for outputting the pulse current and pulse laser phase waveforms, wherein the waveform output control system is connected with the TIG welder and the fiber laser.
The TIG welding gun is placed perpendicular to a to-be-welded workpiece of the medium plate, and an included angle between a laser beam output by the laser welding head and the central line of a tungsten electrode of the TIG welding gun is 25-35 degrees.
The invention has the beneficial effects that: the liquid metal at the front end of the electric arc molten pool is discharged to the rear end of the electric arc molten pool by utilizing the high electric arc pressure difference generated when the peak value and the basic value of the low-frequency high-duty ratio pulse current are switched, so that a liquid metal film is formed at the bottom of the front end of the electric arc molten pool, and then a periodic impact penetrating effect is generated on the liquid metal film at the bottom of the electric arc molten pool by utilizing pulse laser, so that a stable penetrability 'small hole' is formed, and the penetration of TIG welding is increased. Because the pulse laser has very short action time on the electric arc molten pool, the pulse laser has almost no heating effect on the solid metal at the bottom of the electric arc molten pool and only has the effect of impacting and penetrating the liquid metal film. Because the pulse laser needs to break down a liquid metal film at the bottom of the electric arc molten pool instead of the whole electric arc molten pool, the full penetration welding of a large blunt edge can be realized by matching low-power laser with low-frequency high-duty ratio pulse TIG welding, so that the high-efficiency deep-melting bottoming welding of a medium plate is realized, a continuous and consistent single-sided welding double-sided forming welding seam is obtained, and the bottoming welding quality and efficiency of a medium plate structural member can be remarkably improved.
Drawings
FIG. 1 is a schematic view of one embodiment of a welding apparatus of the present invention;
FIG. 2 is a schematic illustration of the position of the TIG gun of FIG. 1 during welding;
fig. 3 is a front-back image of the weld obtained in the experimental example.
Detailed Description
The invention discloses a medium plate targeted laser assisted TIG deep-melting bottoming welding method, which comprises the following steps of: 1) Cleaning a Y-shaped groove of a workpiece to be welded of the medium plate, and fixing the Y-shaped groove on a welding control platform; 2) A TIG welding gun and a laser welding head are sequentially arranged above the medium plate workpiece to be welded along the welding direction, a gas feeding valve is opened, the TIG welding gun starts an arc, and the TIG welding gun and the laser welding head are used for welding; 3) After the welding is finished, the power supply of the fiber laser is firstly disconnected, then the power supply of the TIG welder is disconnected, and the air supply valve is closed.
In the step 1), oil stains, rust spots, oxides and the like at the Y-shaped groove of the to-be-welded workpiece of the medium plate are removed, manual arc welding is adopted to fix the back of the to-be-welded workpiece of the medium plate in a spot welding mode, a gap between the butt joint front ends is about 2mm, the tail end is about 3mm, the front end refers to the end where welding starts, and the tail end refers to the end after welding ends.
In the step 2), the TIG welding gun is placed perpendicular to a to-be-welded workpiece of the medium plate, and an included angle between a laser beam output by the laser welding head and the central line of a tungsten electrode of the TIG welding gun is 25-35 degrees. And during welding, a TIG welding gun is placed at the center of the Y-shaped groove of the workpiece to be welded of the medium plate, and the tip of a tungsten electrode of the TIG welding gun is 1-2mm higher than the upper edge of the blunt edge.
In step 2), TIG welder parameters and fiber laser parameters are set. The specific parameters are as follows: setting parameters of the TIG welding machine to enable the TIG welding machine to output low-frequency high-duty-cycle pulse rectangular wave current with the pulse frequency of 1-2.5Hz and the duty cycle of 75% -85% to the TIG welding gun. The low-frequency high-duty ratio pulse current enables a medium plate to be welded below the TIG welding gun to be melted to form an electric arc molten pool, and the high electric arc pressure difference generated when the peak value and the basic value of the low-frequency high-duty ratio pulse current are switched enables liquid metal at the front end of the electric arc molten pool to be discharged to the rear end of the electric arc molten pool so as to form a liquid metal film at the bottom of the front end of the electric arc molten pool. Setting parameters of the fiber laser to enable the fiber laser to output pulse laser to the laser welding head so as to apply targeted pulse laser at the front end of the falling edge of the pulse peak current. The laser spot action position is positioned at the front end of the electric arc molten pool so as to impact the liquid metal film at the bottom of the electric arc molten pool to form a 'small hole', and form a full penetration molten pool. Wherein the pulse period of the pulse laser is consistent with the pulse current period, and the time for the pulse laser to act on the front end of the arc melting pool is 100-250ms. The pulsed laser action arc chute phase is between about 100-300ms before the falling edge of the pulsed peak current action chute. The time and the time point of application of the pulsed laser to the arc-chute are selected according to the frequency and duty cycle of the pulsed laser.
In the step 2), the TIG welding machine is used for completing the arc starting, a high-frequency arc starting mode is used, and the welding protection is carried out by adopting protective gas in the welding process.
In the step 3), after the power supply of the TIG welder is disconnected, an air supply switch of the protective gas is disconnected finally, so that pollution and damage of air to welding seams, welding spatter and the like to an optical lens of the laser welding head are avoided.
An embodiment of an apparatus using the above welding method of the present invention, as shown in fig. 1, includes a pulse TIG welder 1, a TIG welding torch 3, a fiber laser 2, a laser welding head 4, and a welding control stage 6, where the TIG welding torch 3 and the laser welding head 4 are located above the welding control stage and are sequentially disposed along the welding direction. The welding control platform 6 is used for fixing a medium plate workpiece (more than 16 mm) to be welded. The TIG welding machine is used for outputting low-frequency high-duty-cycle pulse rectangular wave current with the pulse frequency of 1-2.5Hz and the duty cycle of 75% -85% to the TIG welding gun. The fiber laser is used for outputting pulse laser to the laser welding head. The TIG welding gun is placed perpendicular to a to-be-welded workpiece of the medium plate, and an included angle between a laser beam output by the laser welding head and the central line of a tungsten electrode of the TIG welding gun is 25-35 degrees. The positive pole of the TIG welding machine is connected with the work piece to be welded of the medium plate, and the negative pole of the TIG welding machine is connected with the TIG welding gun. The welding device also comprises a waveform output control system 7 for outputting the pulse current and pulse laser phase waveforms, wherein the waveform output control system 7 is connected with the TIG welder 1 and the fiber laser 2.
Before welding, a Y-shaped groove 8 is formed in a to-be-welded workpiece of a medium plate, the groove angle is 40-60 degrees, the blunt edge 12 is 5-6 mm, and the butt joint gap 11 is 2-3 mm. When welding, as shown in fig. 2, a TIG welding gun is placed at the center of the Y-shaped groove of the workpiece to be welded of the medium plate, and the tip of the tungsten electrode of the TIG welding gun is 1-2mm higher than the upper edge of the blunt edge. The welding arc starting is completed by a TIG welding machine in a high-frequency arc starting mode, pulse laser is periodically output according to a phase value set by a waveform output control system after the arc starting is stabilized and acts on an electric arc molten pool 10, the whole arc welding process is completed, a deep melting welding molten pool is formed, and the electric arc molten pool is solidified to form a welding line 9 according to a set welding speed, so that welding is completed. When the arc is extinguished, the power supply of the fiber laser is firstly turned off, then the power supply of the TIG welder is turned off, and finally, the gas supply switch of the shielding gas is turned off, so that the welding is stopped.
Experimental example
And (3) taking a 16MnDR test plate with the size specification of 500mm multiplied by 150mm multiplied by 16mm as a workpiece to be welded of a medium plate, processing a Y-shaped groove on the workpiece, wherein the blunt edge is 6mm, the groove angle is 60 degrees, pure argon is adopted as protective gas, and the gas flow is 10L/min. And (3) before butt joint, an angle grinder is used for matching with a rust-removing steel wire wheel or a louver blade to carefully polish and remove greasy dirt and oxide at the groove, an assembly gap is reserved between two workpieces during assembly, the initial end gap is 2mm, and the tail end gap is about 3mm. Fixing the two ends of the butt joint test plate by adopting manual arc welding before welding, polishing and deslagging the spot welding position and the periphery after assembling, carefully cleaning pollutants at the groove by using alcohol or acetone solution, drying by using a blower, and strictly removing the residual pollutants at the groove. In order to prevent the deformation and displacement of the test plate in the welding process and influence the formation of the welding seam, the test plate is fixed on a welding control platform by using a G-shaped clamp during welding. The welding parameters adopted in the actual welding process are as follows: pulse peak current 320A, pulse base value current 75A, duty ratio 75%, pulse frequency 1.5Hz, laser power 3200W, defocus 180mm, spot diameter 3mm, welding speed 170mm/min. The TIG welding gun is perpendicular to a to-be-welded workpiece of the medium plate, and an included angle between a laser beam output by the laser welding head and the central line of a tungsten electrode of the TIG welding gun is 30 degrees.
The time point of the front end of the pulse laser action molten pool is 200ms before the falling edge of the pulse current peak action molten pool so as to effectively impact a metal film formed by discharging liquid metal at the front end of the electric arc molten pool to the rear end. The time for the pulsed laser to act on the liquid metal film at the front end of the arc melting pool is 200ms, so that a penetrating 'small hole' is formed by impacting the metal film. The pulse laser frequency was 1.5Hz, consistent with the pulse current frequency, to form periodic laser shock penetrations to the puddle.
And compared with the conventional TIG arc, the low-frequency high-duty ratio TIG arc is obviously compressed, the energy density of the arc is increased, the arc can stably penetrate through the reserved 6mm blunt edge of the medium plate groove, and the energy of a welding line is as low as about 16kJ/cm. When the targeting laser is adopted to assist TIG welding to perform backing welding, by reasonably adjusting the welding speed, under the condition of lower welding line energy, high-efficiency backing welding of a medium plate with a large blunt edge and a small angle groove can be realized, and a good single-sided welding double-sided forming welding seam is obtained, as shown in figure 3.
The invention discloses a key technology for breaking through the technical bottlenecks of low melting depth (limit is 3 mm) and low efficiency of manual TIG backing welding and unstable full penetration forming of the back surface of a welding line in the prior art, realizing the penetration of a liquid metal film at the bottom of a molten pool in the backing welding process of the medium plate, continuous single-sided welding and double-sided forming of a lining-plate-free molten pool, realizing the high-efficiency deep-melting full-automatic TIG backing welding of the medium plate, and providing key technical support for the high-efficiency high-quality automatic welding manufacture of a nuclear-grade pressure container.
In other embodiments of the invention, the blunt edge may also be 5mm; the bevel angle can also be 40 degrees or 50 degrees; the pulse frequency of the pulse current may be 1Hz or 2.5Hz; the duty cycle of the pulsed current may be 85% or 80%; the time point of the front end of the pulse laser action molten pool is 100ms before the falling edge of the pulse current peak action molten pool; the time point of the front end of the pulse laser action molten pool is 300ms before the falling edge of the pulse current peak action molten pool; the time of the pulse laser to act on the liquid metal film at the front end of the arc melting pool is 100ms; the time of the pulse laser to act on the liquid metal film at the front end of the arc melting pool is 250ms; the included angle between the laser beam output by the laser welding head and the central line of the tungsten electrode of the TIG welding gun is 25 degrees; the included angle between the laser beam output by the laser welding head and the central line of the tungsten electrode of the TIG welding gun is 35 degrees.
Claims (4)
1. The medium plate targeted laser assisted TIG deep-melting bottoming welding method is characterized by comprising the following steps of:
1) Cleaning a Y-shaped groove of a workpiece to be welded of the medium plate, and fixing the Y-shaped groove on a welding control platform;
2) A TIG welding gun and a laser welding head are sequentially arranged above the medium plate workpiece to be welded along the welding direction, a gas feeding valve is opened, the TIG welding gun starts an arc, and the TIG welding gun and the laser welding head are used for welding;
the method comprises the steps that a TIG welding machine outputs pulse frequency of 1-2.5Hz to a TIG welding gun, low-frequency high-duty ratio pulse rectangular wave current with duty ratio of 75% -85% is output to the TIG welding gun, a medium plate to be welded below the TIG welding gun is melted to form an electric arc molten pool, and liquid metal at the front end of the electric arc molten pool is discharged to the rear end of the electric arc molten pool to form a liquid metal film at the bottom of the electric arc molten pool;
outputting pulse laser to a laser welding head by a fiber laser to apply targeted pulse laser at the front end of the falling edge of a pulse peak current, wherein the action position of a laser spot is positioned at the front end of an electric arc molten pool to impact a liquid metal film at the bottom of the electric arc molten pool to form a 'small hole', and form a full penetration molten pool, wherein the pulse period of the pulse laser is consistent with the pulse current period, and the time of the pulse laser to act on the front end of the electric arc molten pool is 100-250ms;
3) After the welding is finished, the power supply of the fiber laser is firstly disconnected, then the power supply of the TIG welder is disconnected, and the air supply valve is closed.
2. The medium plate targeted laser assisted TIG deep-melting bottoming welding method according to claim 1, characterized by comprising the following steps: in step 2), the pulsed laser action arc chute phase is between 100-300ms before the pulse peak current action chute falling edge.
3. The medium plate targeted laser assisted TIG deep-melting bottoming welding method according to claim 1, characterized by comprising the following steps: in the step 2), the TIG welding gun is placed perpendicular to a to-be-welded workpiece of the medium plate, and an included angle between a laser beam output by the laser welding head and the central line of a tungsten electrode of the TIG welding gun is 25-35 degrees.
4. The medium plate targeted laser assisted TIG deep-melting bottoming welding method according to claim 1, characterized by comprising the following steps: in the step 2), during welding, a TIG welding gun is placed at the center of a Y-shaped groove of a workpiece to be welded of a medium plate, and the tungsten electrode of the TIG welding gun is 1-2mm higher than the upper edge of the blunt edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210530312.8A CN114952005B (en) | 2022-05-16 | 2022-05-16 | Medium-thickness plate targeted laser-assisted TIG deep-melting bottoming welding method and welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210530312.8A CN114952005B (en) | 2022-05-16 | 2022-05-16 | Medium-thickness plate targeted laser-assisted TIG deep-melting bottoming welding method and welding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114952005A CN114952005A (en) | 2022-08-30 |
| CN114952005B true CN114952005B (en) | 2023-08-11 |
Family
ID=82982408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210530312.8A Active CN114952005B (en) | 2022-05-16 | 2022-05-16 | Medium-thickness plate targeted laser-assisted TIG deep-melting bottoming welding method and welding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114952005B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670495A (en) * | 2009-09-28 | 2010-03-17 | 北京工业大学 | Laser-TIG electric arc hybrid welding technology for spaceflight aluminum alloy plate with medium thickness and high strength |
| CN106583928A (en) * | 2016-12-29 | 2017-04-26 | 西安交通大学 | Non-preheating optical fiber laser-arc composite welding method for copper busbars |
| CN110814552A (en) * | 2019-09-27 | 2020-02-21 | 渤海造船厂集团有限公司 | Scanning galvanometer laser-high frequency pulse TIG (tungsten inert gas) hybrid welding method |
| CN113941777A (en) * | 2020-12-10 | 2022-01-18 | 哈尔滨焊接研究院有限公司 | Thick plate ultrahigh-power laser scanning-high-frequency pulse deep melting TIG (tungsten inert gas) hybrid welding method |
| CN113941778A (en) * | 2020-12-10 | 2022-01-18 | 哈尔滨焊接研究院有限公司 | Thick plate ultrahigh-power laser-deep melting TIG (tungsten inert gas) hybrid welding method |
| JP2022025953A (en) * | 2020-07-30 | 2022-02-10 | 株式会社ダイヘン | Laser/arc hybrid welding apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774091B (en) * | 2009-12-22 | 2011-09-07 | 大连理工大学 | Phase control method for pulse laser-alternating current electric arc composite welding pulse |
-
2022
- 2022-05-16 CN CN202210530312.8A patent/CN114952005B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670495A (en) * | 2009-09-28 | 2010-03-17 | 北京工业大学 | Laser-TIG electric arc hybrid welding technology for spaceflight aluminum alloy plate with medium thickness and high strength |
| CN106583928A (en) * | 2016-12-29 | 2017-04-26 | 西安交通大学 | Non-preheating optical fiber laser-arc composite welding method for copper busbars |
| CN110814552A (en) * | 2019-09-27 | 2020-02-21 | 渤海造船厂集团有限公司 | Scanning galvanometer laser-high frequency pulse TIG (tungsten inert gas) hybrid welding method |
| JP2022025953A (en) * | 2020-07-30 | 2022-02-10 | 株式会社ダイヘン | Laser/arc hybrid welding apparatus |
| CN113941777A (en) * | 2020-12-10 | 2022-01-18 | 哈尔滨焊接研究院有限公司 | Thick plate ultrahigh-power laser scanning-high-frequency pulse deep melting TIG (tungsten inert gas) hybrid welding method |
| CN113941778A (en) * | 2020-12-10 | 2022-01-18 | 哈尔滨焊接研究院有限公司 | Thick plate ultrahigh-power laser-deep melting TIG (tungsten inert gas) hybrid welding method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114952005A (en) | 2022-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5934890B2 (en) | Arc welding control method | |
| CN102922153B (en) | Laser guide GMAW (Gas Metal Arc Welding) electric arc compound transverse welding method | |
| CN106862771B (en) | A kind of laser assisted melt pole electrical arc increasing material connection method for high temperature alloy | |
| CN105127566B (en) | The complete penetraction and fusion in welding welding method of big thickness carbon steel stainless steel clad plate | |
| CN102161134A (en) | Hybrid welding method of variable-polarity square-wave tungsten electrode argon arc and laser | |
| CN110052712B (en) | Non-axisymmetric rotating tungsten electrode GTAW and pulse laser composite welding method | |
| CN102248267A (en) | Thick-wall chromium-molybdenum steel pipeline submerged arc welding technology | |
| CN110814552A (en) | Scanning galvanometer laser-high frequency pulse TIG (tungsten inert gas) hybrid welding method | |
| CN101992354A (en) | Micro-beam plasma arc/laser hybrid welding method | |
| CN101590572A (en) | The vertical double-sided double-arc plasma symmetry welding method | |
| CN107584195A (en) | Alternating electric arc fuse argon tungsten-arc welding system and method for Welded | |
| CN109226968A (en) | A kind of method of sheet material double face narrow gap scanning galvanometer laser-MAG compound welding | |
| CN103831533A (en) | Titanium alloy laser-MIG composite welding method | |
| CN107252971B (en) | Galvanized sheet laser stitch welding method | |
| CN103433630A (en) | Laser-electric arc composite spot welding method for pulsed wire feeding | |
| CN114952005B (en) | Medium-thickness plate targeted laser-assisted TIG deep-melting bottoming welding method and welding device | |
| Liu et al. | Effects of processing parameters on arc stability and cutting quality in underwater wet flux-cored arc cutting at shallow water | |
| CN115673483A (en) | Arc welding device with adjustable welding gun angle position and welding method | |
| CN110449737A (en) | A method of repairing housing of power cell and the fried point of top cover Laser Welding | |
| JP2007105754A (en) | Laser irradiation arc welding method | |
| CN104084700B (en) | Little current swing arc cathode atomizing and oxidizing film method for cleaning | |
| CN111515539B (en) | Circumferential weld laser-TIG (tungsten inert gas) hybrid welding device and using method | |
| CN111604597B (en) | Double-electric-arc preheating laser swing welding method for K-shaped connector | |
| CN113210798B (en) | Small-leg single-pass fillet welding method | |
| CN114850664A (en) | Laser arc double-side synchronous vertical welding method and device for medium plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |