CN105880807A - TIG filler wire narrow-gap welding method utilizing bypass arc induction - Google Patents
TIG filler wire narrow-gap welding method utilizing bypass arc induction Download PDFInfo
- Publication number
- CN105880807A CN105880807A CN201610447593.5A CN201610447593A CN105880807A CN 105880807 A CN105880807 A CN 105880807A CN 201610447593 A CN201610447593 A CN 201610447593A CN 105880807 A CN105880807 A CN 105880807A
- Authority
- CN
- China
- Prior art keywords
- welding
- tig
- arc
- arcing
- wire
- 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.)
- Pending
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
- 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
Abstract
The invention discloses a TIG filler wire narrow-gap welding method utilizing bypass arc induction. The method includes the steps that 1, the positive electrode of a main arc welding machine (1) is connected with a workpiece (5), the negative electrode of the main arc welding machine (1) is connected with a TIG welding gun (3), and a main path of arc is generated between the TIG welding gun (3) and the workpiece (5); 2, the positive electrode of a bypass arc welding machine (2) is connected with a contact tube of a welding wire (4), the negative electrode of the bypass arc welding machine (2) is connected with the TIG welding gun (3), and a bypass arc is generated between the TIG welding gun (3) and the welding wire (4); 3, a stretching tungsten electrode (8) of the TIG welding gun (3) is located in a narrow-gap welding bead, the welding wire (4) swings back and forth between two side walls of the welding bead under the control of a swinging device (6), and the bypass arc between the TIG welding gun (3) and the welding wire (4) and a formed coupled arc are also driven to swing between the two side walls.
Description
Technical field
The present invention relates to solder technology, be specifically related to narrow gap welding connection technology.
Background technology
Along with industrial expansion, the application of the large-sized structural parts of slab, ultra-thick plate etc. is more and more extensive, but along with the increase of thickness of workpiece, the difficulty of welding also sharply increases, when using traditional welding method that cut deal is welded, big groove, increase welding job amount the most at double and welding cost need to be opened, reduce welding productivity, and thermal weld stress is big, weld grain is thick, heat affected area width, post welding distortion is serious, causes quality of weld joint to decline.For the shortcoming in traditional welding method, U.S.'s Battelle institute proposes the narrow gap welding method having many technological improvements with economic advantages, the method is conventional welding procedure to be combined with Narrow sloping-glot, the solder technology of integrated a kind of advanced person by special device and control technology.Owing to needed for narrow gap welding connection technology, groove is little, decrease workpiece grooves processing capacity, and greatly reduce the metal filled amount of weld seam, save material, reduce welding production cost, improve production efficiency；Deep and narrow groove welds, is more beneficial for the metallurgical protection of weld zone, improves the metallurgical degree of purity of weld metal；Weld heat input is less and has molten bath rate of cooling faster so that weld grain is tiny, and welding heat affected zone is narrow, and welding deformation is little, improves quality of weld joint.The narrowest gap TIG welds, it is adaptable to various heavy wall high-strength steel, structural steel, special alloy and the bottoming of non-ferrous metal, filling, the welding of capping.But in practical operation, TIG electric arc is often partial to welding bead so that incomplete fusion occurs in welding bead sidewall, and does not reaches welding quality requirement.
Therefore, narrow gap TIG weld in, in order to ensure welding quality it is first necessary to solve groove sidewall fusion problem.Use Mechanical course electric arc to swing both at home and abroad for this problem, magnetic field controls electric arc swing, the method for rotating the arc directly heats groove sidewall, to reach the good fusion of sidewall.But controlling electric arc to swing or the device that rotates is complicated and volume is excessive, the amplitude of oscillation is limited by groove gap, or is limited by weldment magnetic conductivity simultaneously, and electric arc should not be long and to keep strict centering to make the amplitude of oscillation the most limited.
Summary of the invention
The deficiency that when it is an object of the invention to overcome above-mentioned electric arc heated welding bead sidewall, the electric arc amplitude of oscillation is limited, it is provided that a kind of TIG silk filling narrow gap welding method utilizing side-arcing to induce.
The present invention is the TIG silk filling narrow gap welding method utilizing side-arcing to induce, and the steps include:
(1) positive pole of minor arc welding machine 1 is connected with workpiece 5, and negative pole is connected with TIG welding gun 3, produces main road electric arc between TIG welding gun 3 and workpiece 5；
(2) positive pole of side-arcing welding machine 2 is connected with the ignition tip of welding wire 4, and negative pole is connected with TIG welding gun 3, produces side-arcing between TIG welding gun 3 and welding wire 4；
(3) tungsten electrode 8 that TIG welding gun 3 is extended is positioned among narrow gap welding road, welding wire 4 swings back and forth under the control of pendulous device 6 between welding bead two side, drives the side-arcing between TIG welding gun 3 and welding wire 4 and the coupled arc that formed also to swing between two side.
Compared with the TIG landfilling area of conventional narrow gap, the invention has the beneficial effects as follows: owing to introducing side-arcing, the heat making filler wire also has the resistance heat that the side-arcing between TIG welding gun 3 and welding wire 4, electric current produce when flowing through welding wire in addition to the main road electric arc between TIG welding gun 3 and workpiece 5, substantially increase the deposition rate of welding wire 4, and due to the shunting action of side-arcing, flow through the electric current I of workpiece 5mFor flowing through the electric current I of TIG welding gun 3zWith the electric current I flowing through welding wire 4bDifference, i.e. Im=Iz-Ib, it is achieved the minimizing of workpiece heat input, produce, owing to heat input is excessive, the phenomenon that weld metal zone tissue hardens when can effectively solve welding high-strength steel.
Control electric arc with mechanically or magnetically field to swing, rotating the arc narrow gap welding is compared, the invention has the beneficial effects as follows: the tungsten electrode 8 of TIG welding gun 3 elongation is positioned at center, narrow gap welding road, and use steep drop characteristic power supply, make arc shape stable, sidewall can be beaten arc phenomenon and produce certain inhibitory action, welding process is stable, particularly filler wire in welding bead two side periodic wobble time, coupled arc periodic wobble is induced to make sidewall be heated uniformly by regularity and melt by side-arcing, the good fusion of sidewall is realized with this, and occur without the defects such as undercut.Therefore, the present invention can realize the welding process of continuous-stable, improves welding quality and production efficiency.
Accompanying drawing explanation
The TIG silk filling narrow gap welding principle schematic of Fig. 1 side-arcing induction, in one wire oscillation cycle of Fig. 2 ~ Fig. 6 welding process, coupled arc change schematic diagram, reference and correspondence are entitled: 1 minor arc welding machine, 2 side-arcing welding machines, 3TIG welding gun, 4 welding wires, 5 workpiece, 6 wire oscillation devices, 7 fixed supports, 8 tungsten electrodes.
Detailed description of the invention
The narrow gap welding as it is shown in figure 1, the TIG that the present invention is side-arcing induction fills silk, mainly includes minor arc welding machine 1, side-arcing welding machine 2, TIG welding gun 3, welding wire 4, workpiece 5, wire oscillation device 6.Wherein, the positive pole of minor arc welding machine 1 is connected with workpiece 5, and negative pole is connected with TIG welding gun 3；The positive pole of side-arcing welding machine 2 is connected with welding wire 4 ignition tip, and negative pole is connected with TIG welding gun 3.Minor arc welding machine 1 provides certain electric current, voltage between TIG welding gun 3 and workpiece 5, makes gas medium ionization produce main road electric arc；Simultaneously when welding wire 4 touches main road electric arc, owing to main road electric arc arc column district temperature is the highest, the welding wire of elongation melts and filler pass rapidly, between TIG welding gun 3 and welding wire 4, certain voltage and electric current is provided again due to side-arcing welding machine 2, therefore producing again side-arcing between TIG welding gun 3 and welding wire 4, at this moment main road electric arc forms coupled arc with side-arcing.When narrow gap welding, the tungsten electrode 8 of TIG welding gun 3 is positioned at center, narrow gap welding road, and main road electric arc results between tungsten electrode 8 tip and workpiece 5, because using the power supply of steep drop characteristic, the arc shape formed is stable, and therefore welding process is stable, but electric arc may deflection welding bead side；Welding wire 4 is sent into and touches main road electric arc, and then generation side-arcing, welding wire 4 is under the control of pendulous device 6, start to swing back and forth between two side, and then drive the side-arcing between TIG welding gun 3 and welding wire 4 and the coupled arc that formed also to swing between two side, coupled arc is made periodically to heat two side, narrow gap welding road, to reach the purpose of sidewall good fusion.
Shown in as shown in Figure 1, Figure 2 ~ Fig. 6, tungsten electrode 8 is positioned at position, middle, narrow gap welding road, and its most advanced and sophisticated opposite piece remains that length is constant.
As in figure 2 it is shown, welding wire 4 periodically swings with tungsten electrode 8 for axis of symmetry rule in narrow gap welding road.
The present invention is further described to utilize an instantiation below in conjunction with the accompanying drawings, and concrete grammar and step are as follows:
1, connecting each equipment according to the schematic diagram shown in Fig. 1, with ordinary carbon steel thick for 50mm for workpiece 5, gap is 10mm, and interface is carried out surface process, to metallic luster occur；
2, being placed on welding job platform by the workpiece 5 handled well, adjust the position of welding gun 3 and welding wire 4, welding wire selects the carbon steel welding wire of a diameter of 1.2mm, and the number of oscillations arranging welding wire is 60 cycle per minute clocks, and amplitude of fluctuation is 4mm；
3, use the welding condition in table 1, carry out the TIG silk filling narrow gap welding of side-arcing induction.
Table 1 welding condition
Claims (3)
1. utilize the TIG silk filling narrow gap welding method that side-arcing is induced, it is characterised in that the steps include:
(1) positive pole of minor arc welding machine (1) is connected with workpiece (5), and negative pole is connected with TIG welding gun (3), produces main road electric arc between TIG welding gun (3) and workpiece (5)；
(2) positive pole of side-arcing welding machine (2) is connected with the ignition tip of welding wire (4), and negative pole is connected with TIG welding gun (3), produces side-arcing between TIG welding gun (3) and welding wire (4)；
(3) tungsten electrode (8) that TIG welding gun (3) is extended is positioned among narrow gap welding road, welding wire (4) swings back and forth under the control of pendulous device (6) between welding bead two side, drives the side-arcing between TIG welding gun (3) and welding wire (4) and the coupled arc that formed also to swing between two side.
2. the TIG silk filling narrow gap welding method induced according to the side-arcing described in claims 1, it is characterised in that: tungsten electrode (8) is positioned at position, middle, narrow gap welding road, and its most advanced and sophisticated opposite piece remains that length is constant.
3. the TIG induced according to the side-arcing described in claims 1 welds narrow gap welding method, it is characterised in that: welding wire (4) is that axis of symmetry rule periodically swings with tungsten electrode (8) in narrow gap welding road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610447593.5A CN105880807A (en) | 2016-06-21 | 2016-06-21 | TIG filler wire narrow-gap welding method utilizing bypass arc induction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610447593.5A CN105880807A (en) | 2016-06-21 | 2016-06-21 | TIG filler wire narrow-gap welding method utilizing bypass arc induction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105880807A true CN105880807A (en) | 2016-08-24 |
Family
ID=56731188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610447593.5A Pending CN105880807A (en) | 2016-06-21 | 2016-06-21 | TIG filler wire narrow-gap welding method utilizing bypass arc induction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105880807A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109514037A (en) * | 2018-11-29 | 2019-03-26 | 河北科技大学 | Twin arc built-up welding dilution control device and method |
| CN111515539A (en) * | 2020-04-21 | 2020-08-11 | 华北水利水电大学 | Circular seam laser-TIG (tungsten inert gas) hybrid welding device and using method |
| CN111515541A (en) * | 2020-04-26 | 2020-08-11 | 华北水利水电大学 | Thick plate narrow gap laser-TIG composite filler wire welding device and method |
| CN116275413A (en) * | 2023-03-15 | 2023-06-23 | 哈尔滨工业大学 | Narrow-gap GTAW welding gun capable of synchronously swinging wire arcs |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60191677A (en) * | 1984-03-13 | 1985-09-30 | Babcock Hitachi Kk | Narrow gap tig arc welding torch |
| JPS6245474A (en) * | 1985-08-23 | 1987-02-27 | Babcock Hitachi Kk | Narrow groove tig welding device |
| US4801781A (en) * | 1985-02-13 | 1989-01-31 | Babcock-Hitachi Kabushiki Kaisha | Semi-automatic hot wire tig welding equipment |
| CN102500885A (en) * | 2011-11-09 | 2012-06-20 | 天津大学 | Gas tungsten arc welding (GTAW) system and welding method thereof |
| CN202846005U (en) * | 2012-11-02 | 2013-04-03 | 艾美特焊接自动化技术(北京)有限公司 | Narrow gap hot-wire tungsten inert gas (TIG) welding gun |
| CN104128697A (en) * | 2014-08-26 | 2014-11-05 | 哈尔滨工业大学（威海） | Thick plate titanium alloy narrow gap swing welding device |
-
2016
- 2016-06-21 CN CN201610447593.5A patent/CN105880807A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60191677A (en) * | 1984-03-13 | 1985-09-30 | Babcock Hitachi Kk | Narrow gap tig arc welding torch |
| US4801781A (en) * | 1985-02-13 | 1989-01-31 | Babcock-Hitachi Kabushiki Kaisha | Semi-automatic hot wire tig welding equipment |
| JPS6245474A (en) * | 1985-08-23 | 1987-02-27 | Babcock Hitachi Kk | Narrow groove tig welding device |
| CN102500885A (en) * | 2011-11-09 | 2012-06-20 | 天津大学 | Gas tungsten arc welding (GTAW) system and welding method thereof |
| CN202846005U (en) * | 2012-11-02 | 2013-04-03 | 艾美特焊接自动化技术(北京)有限公司 | Narrow gap hot-wire tungsten inert gas (TIG) welding gun |
| CN104128697A (en) * | 2014-08-26 | 2014-11-05 | 哈尔滨工业大学（威海） | Thick plate titanium alloy narrow gap swing welding device |
Non-Patent Citations (1)
| Title |
|---|
| 林三宝等: "《高效焊接方法》", 31 March 2012, 机械工业出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109514037A (en) * | 2018-11-29 | 2019-03-26 | 河北科技大学 | Twin arc built-up welding dilution control device and method |
| CN111515539A (en) * | 2020-04-21 | 2020-08-11 | 华北水利水电大学 | Circular seam laser-TIG (tungsten inert gas) hybrid welding device and using method |
| CN111515541A (en) * | 2020-04-26 | 2020-08-11 | 华北水利水电大学 | Thick plate narrow gap laser-TIG composite filler wire welding device and method |
| CN111515541B (en) * | 2020-04-26 | 2022-06-10 | 华北水利水电大学 | Thick plate narrow gap laser-TIG composite filler wire welding device and method |
| CN116275413A (en) * | 2023-03-15 | 2023-06-23 | 哈尔滨工业大学 | Narrow-gap GTAW welding gun capable of synchronously swinging wire arcs |
| CN116275413B (en) * | 2023-03-15 | 2023-12-05 | 哈尔滨工业大学 | Narrow-gap GTAW welding gun capable of synchronously swinging wire arcs |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102371421B (en) | Cold metal transition welding method and device thereof | |
| CN102151959B (en) | High-speed welding production process and device for thin-walled steel tubes | |
| CN105880807A (en) | TIG filler wire narrow-gap welding method utilizing bypass arc induction | |
| CN107999962B (en) | A kind of method for laser welding of double CMT/ mariages CMT auxiliary | |
| CN101391331B (en) | Two-sides arc-welding device based on welding wire diffluence and welding method thereof | |
| CN107322148B (en) | Welding method based on tungsten electrode argon arc welding and cold metal transition welding composite heat source and application | |
| CN108907414B (en) | High-deposition-efficiency high-welding-speed double-tungsten-electrode TIG (tungsten inert gas) narrow-gap welding method | |
| CN106312270A (en) | Coaxial hollow tungsten electrode TIG device and welding gun thereof, using method and application | |
| JP2010201507A (en) | Method of joining two metallic portions by tungsten inert gas welding and apparatus for carrying out this method | |
| Guo et al. | Study on forming mechanism of appearance defects in rotating arc narrow gap horizontal GMAW | |
| CN104985303B (en) | A kind of InFocus TOPTIG twin arc complex welding methods | |
| CN107584195A (en) | Alternating electric arc fuse argon tungsten-arc welding system and method for Welded | |
| CN107363399A (en) | A kind of method of electric arc auxiliary laser weldering | |
| CN106563870A (en) | Twin-tungsten-electrode electronic swing arc (ESA) argon arc welding | |
| CN110052712A (en) | A kind of non-axis symmetry rotation tungsten electrode GTAW and pulse laser complex welding method | |
| CN110405326B (en) | TIG excitation welding gun for deep and narrow gap and welding method | |
| CN105269124B (en) | A kind of fuse tungsten argon arc soldering method | |
| WO1994022630A1 (en) | Plasma arc welding method and apparatus for practising the same | |
| CN112975072A (en) | Method and system for assisting aluminum alloy/steel dissimilar metal melting and brazing by using additional alternating magnetic field | |
| CN109483022B (en) | Gas-magnetic combined regulation and control double-tungsten-electrode TOPTIG welding method | |
| CN107350604A (en) | A kind of biobelt pole submerged arc overlay welding method | |
| Jia et al. | Rotating-tungsten narrow-groove GTAW for thick plates | |
| CN103639579B (en) | A kind of microplasma high frequency open high-purity gold and silver welder and method | |
| CN109365958A (en) | A kind of hollow tungsten electrode TOPTIG welding method of gas-magnetic combined regulating | |
| CN203649633U (en) | Microbeam plasma silver and gold welding apparatus with high frequency and high purity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160824 |