CN110788447A - Multi-power-supply parallel multi-wire efficient arc welding device and application thereof - Google Patents
Multi-power-supply parallel multi-wire efficient arc welding device and application thereof Download PDFInfo
- Publication number
- CN110788447A CN110788447A CN201911101281.9A CN201911101281A CN110788447A CN 110788447 A CN110788447 A CN 110788447A CN 201911101281 A CN201911101281 A CN 201911101281A CN 110788447 A CN110788447 A CN 110788447A
- Authority
- CN
- China
- Prior art keywords
- welding
- wire
- power
- efficiency
- arc welding
- 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
Images
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
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
-
- 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
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1006—Power supply
- B23K9/1075—Parallel power supply, i.e. multiple power supplies or multiple inverters supplying a single arc or welding current
-
- 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
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The application discloses parallelly connected high-efficient arc welding device of many silks of many power and application thereof includes: a plurality of independent welding power supplies, a plurality of independent wire feeding mechanisms, a plurality of densely-arranged multi-wire welding guns and conductive nozzles which are connected in sequence. Wherein the plurality of independent welding power supplies can have constant voltage or constant current characteristics; a plurality of independent wire feeders respectively carry out wire feeding driving on each welding wire; the conductive nozzle is a multi-filament integral conductive nozzle with a bent channel or a plurality of embedded conductive nozzles; the welding wires of the multi-wire welding guns which can be densely arranged are arranged according to the requirements of the welding process. During welding, the welding equipment is suitable for common welding wires, cable welding wires and the combination of single wires and cable welding wires. The welding efficiency can be greatly improved, the welding production efficiency and the quality of a welding joint are greatly improved, the consumption of welding materials is effectively reduced, and the narrow gap welding device is particularly suitable for narrow gap welding of thick-wall materials.
Description
Technical Field
The application belongs to the technical field of welding, and particularly relates to a multi-power-supply parallel multi-wire efficient arc welding device and application thereof.
Background
Arc welding is one of the most important metal joining techniques, and about half of steel materials can be produced into final products through welding. How to improve the welding efficiency is an important problem in welding production. It is generally recognized that automated welding methods, such as robotic welding, can improve welding efficiency over manual welding, but have limited practical utility. This is because the essential problem of welding efficiency is also the filling efficiency of the welding wire, and the main basis for examining the welding efficiency at present is the amount of the welding wire consumed per unit time, which is also called the deposition rate of the welding wire. The adoption of multi-wire arc welding is undoubtedly an effective way to improve the deposition rate of the welding wire. At present, the multi-wire arc welding has the following methods: 1. the Tandem double-wire arc welding adopts a welding gun nozzle internally provided with two mutually insulated conductive nozzles and two cooperatively controlled welding power supplies, the welding efficiency can reach more than twice of that of single-wire welding, but the equipment is complex and the cost is high; 2. twin-wire electric arc welding, a welding gun nozzle is internally provided with a special double-hole contact tip, one welding power supply supplies power to two welding wires at the same time, the welding efficiency can also reach about twice of that of single-wire welding, but the contact tip is a non-standard product and is difficult to process and replace; 3. similar to Twin, three-wire arc welding is also adopted, a special contact tip with three holes is arranged in a nozzle of a welding gun, a welding power supply supplies power to two welding wires at the same time, the welding efficiency can also reach more than twice of that of single-wire welding, but similarly, the contact tip is a non-standard product and is difficult to process and replace. Also, the durability of the above-mentioned double-or multi-hole contact tip is much inferior to that of the conventional contact tip, and thus the multi-wire arc welding method associated therewith has not been put to practical use. Tandem twin wire arc welding has found some applications, but is not widely spread due to the high cost and maintenance requirements.
Disclosure of Invention
Technical problem to be solved
In view of the technical problems, the application provides a multi-power-supply parallel multi-wire high-efficiency arc welding device and application thereof.
(II) technical scheme
The application provides a parallelly connected high-efficient arc welding device of many silks of many power and application thereof includes: the welding device comprises a plurality of independent welding power supplies, a plurality of independent wire feeding mechanisms, a plurality of wire feeding machine independent wire feeding mechanisms (3), a plurality of welding guns and conductive nozzles which can be densely arranged, wherein the plurality of independent welding power supplies and the plurality of independent wire feeding mechanisms are connected in parallel for welding combination. The high-efficiency deposition of the large thick-wall material is realized by a welding mode of multi-power-supply parallel multi-wire feeding and the angle of the tail end welding wire pointing to the side wall, and the defect that the side wall is not fused during narrow-gap welding is overcome.
In some embodiments of the present application, the welding power sources of the plurality of independent welding power sources are of a constant voltage or constant current characteristic, and the number of the welding power sources may be 300 or less, and is at least 2, and the constant voltage characteristic is recommended.
In some embodiments of the present application, the plurality of independent wire feeders are a plurality of solid monofilaments and/or a plurality of flux-cored monofilaments and/or a plurality of cable-type welding wires, each of which may have the same or different diameter, wherein the solid monofilaments may have a diameter of 0.8-1.0mm, the flux-cored wires may have a diameter of 1.2-1.6mm, and the cable-type welding wires may have a diameter of 1.6-3.0 mm.
In some embodiments of the present application, the independent wire feeders of the multiple wire feeders may feed each welding wire independently and without affecting each other, the wire feeding speeds may be the same or different, and each wire feeder may feed only one welding wire.
In some embodiments of the present application, the densely arranged multi-wire welding gun may have a single row of multiple wires or multiple rows of multiple wires, and the welding wires are arranged according to the requirements of the welding process.
In some embodiments of the present application, the densely arranged multi-wire welding guns are arranged in a triangular arrangement and/or a circular arrangement and/or an elliptical arrangement, and may be arranged in other arrangements.
In some embodiments of the present application, the contact tip is a multi-filament integral contact tip with a curved channel or a plurality of embedded contact tips, which may have water cooling holes.
In some embodiments of the present application, the multi-filament integral contact nozzle may be formed by 3D printing, the curved channel is conductive and insulated from each other, and an included angle between a front end of the curved channel bent into the filament and a tail end of the curved channel bent out of the filament is 5 to 90 °.
In some embodiments of the present application, the plurality of embedded contact tips have a bending characteristic, and can be bent to 5 to 90 °, the inner diameter of the contact tip is +0.1mm of the diameter of the welding wire, and the contact tip and a contact tip seat in the welding gun are fixed by an auxiliary screw without a connecting thread.
In some embodiments of the present application, the method can be applied to the application directions of common groove high cladding efficiency welding, thick wall material narrow gap groove high efficiency welding, wide weld bead surfacing welding and the like.
In some embodiments of the present application, the contact tip may be 3D printed with an insulating material and the channel within the guidewire may be 3D printed with a conductive composite material.
(III) advantageous effects
According to the technical scheme, the method has at least one of the following beneficial effects:
(1) the welding wires of the multi-wire welding guns which can be densely arranged are arranged according to the requirements of the welding process, and can be arranged in a single row with multiple wires, multiple rows with multiple wires and other modes, such as: triangular arrangement, circular arrangement, elliptical arrangement and the like, so that the distribution of welding heat sources can be controlled by changing the arrangement mode of welding wires, and the shape of a welding seam is controlled.
(2) The embedded contact nozzles have the bending characteristic and can be bent to 5-90 degrees, so that the problem of poor fusion of the side walls when a large thick plate is welded in a narrow gap mode can be solved.
(3) By adopting the multi-wire welding gun which can be arranged densely, a plurality of common wires or cable type welding wires can be welded simultaneously, and the welding efficiency is greatly improved.
(4) The wire feeding mechanism and the welding power supply matched with each welding wire are independent, so that the mutual interference of a plurality of welding wires in the welding process can be greatly reduced.
(5) The welding power supply adopts a type 300 or less, the lower welding current can enable the welding heat input to be obviously reduced, and the welding current is more stable.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the technical solutions in the prior art will be briefly described below, and it is obvious that some of the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a dense multifilament implementation in the examples of the present application.
FIG. 2 is a schematic diagram of an embodiment of multi-wire narrow gap welding in an example of the present application.
Fig. 3 is a schematic view of a twin-wire integrated contact tip according to an embodiment of the present application.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be noted that the terms "center", "periphery", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a characteristic orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, the technical features mentioned in the different embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.
Example 1:
the utility model provides a many parallelly connected high-efficient electric arc welding set of many silks of many power, includes many independent welding power, many independent wire feeder, but intensive many welding torches and the contact tip of arranging.
The welding power supplies of the plurality of independent welding power supplies have constant voltage or constant current characteristics, and the number of the welding power supplies is at least 2.
The independent wire feeders are a plurality of solid monofilaments and/or a plurality of flux-cored monofilaments and/or a plurality of cable-type welding wires.
The independent wire feeder of many wire feeders can independently send the silk and do not influence each other for every welding wire, and every wire feeder has and only sends a welding wire.
The arrangement mode of the multi-wire welding guns which can be densely arranged is triangular arrangement, circular arrangement or elliptical arrangement.
The contact tube is a multi-filament integral contact tube with a bent channel or a plurality of embedded contact tubes.
The multi-filament integral contact nozzle can be formed by 3D printing, the bent channels are conductive and are insulated from each other, and the included angle between the front ends of the bent inlet filaments and the tail ends of the bent outlet filaments of the bent channels is 5-90 degrees.
The embedded contact nozzles have the bending characteristic and can be bent to 5-90 degrees, the inner diameter of each contact nozzle is the diameter of a welding wire plus 0.1mm, and the contact nozzles and the contact nozzle seats in the welding gun are fixed by auxiliary screws without connecting threads.
The multi-power-supply parallel multi-wire efficient electric arc welding device is characterized by being applied to the application directions of common groove high-cladding efficiency welding, thick-wall material narrow-gap groove efficient welding, wide-weld bead weld surfacing welding and the like.
FIG. 1 is a schematic view of an embodiment of a dense multi-wire welding gun. In fig. 1, there are 101,102,103,104.105 and 106 total 6 feed tubes and corresponding 201,202,203,204,205 and 206 total 6 connecting unthreaded contact tips. The 6 conductive nozzles are connected with the 6 wire feeding pipes through 300 water-cooling conductive nozzle fixing heads. Each contact tube is locked through 10 locking screw holes shown by 301, one locking screw is screwed into each locking screw hole, one locking screw simultaneously fastens two contact tubes on two sides, and in order to increase the locking reliability of the contact tubes, two locking screw holes are arranged in the same row.
The alignment direction of the welding wires 40 and the welding direction may be any angle. When the arrangement direction of the welding wires 40 is parallel to the welding direction (0 degrees), the welding deposition rate can be increased, and the welding speed is increased; when the arrangement direction of the welding wires 40 is perpendicular (90 degrees) to the welding direction, the width of the welding seam can be increased, and the effect similar to strip surfacing can be obtained when the welding wires are used for surfacing; when the angle between the arrangement direction of the welding wires 40 and the welding direction is changed between 0 to 90 degrees, the effect of changing the width and the penetration of the welding line can be obtained.
The plurality of welding wires 40 in FIG. 1 are in a linear arrangement, which is only one preferred embodiment of a multi-wire welding gun. The number of the welding wires 40 is not limited to 6, and can be increased or decreased; the arrangement of the welding wires 40 is not limited to a single straight line, and may be a rectangular arrangement of a plurality of straight lines, a circumferential arrangement or other geometric arrangements.
The dense multi-wire arrangement has the function of changing the distribution of a single point-shaped heat source of the conventional welding arc, and different strip-shaped or planar arrangement modes can be formed to realize different welding arc heat source distributions.
Example 2:
FIG. 2 is a schematic view of an embodiment of a multi-wire narrow gap weld. In FIG. 2(a), 10 is a narrow gap beveled workpiece; fig. 2 shows a curved contact tip 20 with a corner, which is made by utilizing the characteristic of easy bending of the small-diameter special contact tip, so that the end of the welding wire 40 can be directed to the side wall of the welding workpiece in a narrow gap space under the condition of using the straight-shank wire feeding tube 30, thereby ensuring that the welding arc is directed to the side wall of the welding workpiece and ensuring the fusion of the side wall of the welding workpiece.
The embodiment of multi-wire narrow gap welding shown in fig. 2(B) uses at least two wires, and the contact tip 20 is actually composed of a pair of contact tips 20A and 20B, which are respectively directed to two side walls of the narrow gap bevel. To improve the welding efficiency, a multi-wire narrow gap weld can be constructed from a plurality of such sets of two-wire welds, and a scheme using 3 pairs of multi-wire narrow gap welds with curved contact tips is given in fig. 2.
The bent contact tip shown in fig. 2(c) may also be directed to one side for fillet welding in a narrow space.
Example 3:
the current profile of the dense array multi-wire arc welding system may be controlled by the wire feed speed of the welding wire 40. With equal wire feed speeds for all of the welding wires 40, the current is evenly distributed across each welding wire 40. When the wire feed speeds are not equal: a high wire feed speed of the welding wire 40 corresponds to a high welding current; a low wire feed speed of the welding wire 40 corresponds to a low welding current.
The above examples are only preferred embodiments of the present application, and other embodiments are possible, for example, the present application may be used in vertical electro-gas welding. Those skilled in the art can make equivalent changes or substitutions without departing from the spirit of the present application, and such equivalent changes or substitutions are included in the scope set forth in the claims of the present application.
Claims (10)
1. The utility model provides a many parallelly connected high-efficient electric arc welding set of many silks of many power, includes many independent welding power that connect gradually, many independent wire feeder send wire mechanism, but the multiple-wire welder and the contact tip of intensive arrangement.
2. The multi-power-supply parallel multi-wire high-efficiency arc welding device according to claim 1, wherein the number of the welding power supplies of the plurality of independent welding power supplies is at least 2, and the welding power supplies have constant voltage or constant current characteristics.
3. The multi-power-supply parallel multi-wire high-efficiency arc welding device and the application thereof according to claim 1, wherein the plurality of independent wire feeders are a plurality of solid monofilaments and/or a plurality of flux-cored monofilaments and/or a plurality of cable wires.
4. The arc welding device with multiple power supplies connected in parallel and multiple wires and high efficiency and the application thereof according to claim 1, wherein the independent wire feeders of the multiple wire feeders can feed each welding wire independently and without mutual influence, and each wire feeder has only one welding wire.
5. The multi-power-supply parallel multi-wire high-efficiency arc welding device according to claim 1, wherein the densely-arranged multi-wire welding guns are single-row multi-wire or multi-row multi-wire.
6. The multi-power-supply parallel multi-wire high-efficiency arc welding device according to claim 5, wherein the arrangement mode of the densely-arranged multi-wire welding guns is a triangular arrangement, a circular arrangement or an elliptical arrangement.
7. The multi-power parallel multi-wire high-efficiency arc welding device according to claim 1, wherein the contact tip is a multi-wire integral contact tip with a bent channel or a plurality of mosaic contact tips.
8. The multi-power-supply parallel multi-wire high-efficiency arc welding device according to claim 7, wherein the multi-wire integral contact tip can adopt a 3D printing forming mode, the bent channel is conductive, the channels are mutually insulated, and the included angle between the front end of the bent wire entering the bent channel and the tail end of the bent wire exiting the bent channel is 5-90 degrees.
9. The multi-power parallel multi-wire high-efficiency arc welding device according to claim 7, wherein the plurality of embedded contact tips have bending characteristics and can be bent to 5-90 degrees, the inner diameter of the contact tip is +0.1mm of the diameter of a welding wire, and the contact tip and a contact tip seat in a welding gun are fixed by auxiliary screws without connecting threads.
10. A multi-power-supply parallel multi-wire high-efficiency arc welding device according to any one of claims 1 to 9, which can be applied to the application directions of common-groove high-cladding-efficiency welding, thick-wall material narrow-gap groove high-efficiency welding, wide-seam overlaying welding and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911101281.9A CN110788447A (en) | 2019-11-12 | 2019-11-12 | Multi-power-supply parallel multi-wire efficient arc welding device and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911101281.9A CN110788447A (en) | 2019-11-12 | 2019-11-12 | Multi-power-supply parallel multi-wire efficient arc welding device and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110788447A true CN110788447A (en) | 2020-02-14 |
Family
ID=69444031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911101281.9A Pending CN110788447A (en) | 2019-11-12 | 2019-11-12 | Multi-power-supply parallel multi-wire efficient arc welding device and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110788447A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014907A (en) * | 2019-11-18 | 2020-04-17 | 申英强 | Narrow-gap filament matrix type welding gun and welding process |
| CN112427778A (en) * | 2020-11-12 | 2021-03-02 | 唐山松下产业机器有限公司 | Multi-power-supply parallel welding system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55141374A (en) * | 1979-04-20 | 1980-11-05 | Nippon Kokan Kk <Nkk> | Narrow groove welding method by multielectrode arc welding |
| CN101837532A (en) * | 2009-03-19 | 2010-09-22 | 苏州威达焊割科技有限公司 | Steel tube multiple-wire internal welding machine nose |
| CN102430846A (en) * | 2011-10-21 | 2012-05-02 | 哈尔滨工业大学 | Bent conducting nozzle type twin-wire narrow-gap MIG/MAG (metal inert gas/metal active gas) welding torch |
| CN202377659U (en) * | 2011-12-27 | 2012-08-15 | 成都熊谷加世电器有限公司 | Integral double-wire welding gun |
| CN103273169A (en) * | 2013-05-15 | 2013-09-04 | 艾美特国际有限公司 | Multi-wire bead welding system and process thereof |
| CN105414722A (en) * | 2015-12-29 | 2016-03-23 | 哈尔滨工业大学 | External nozzle twin-wire co-pool narrow-gap GMAW torch |
| KR20170056236A (en) * | 2015-11-13 | 2017-05-23 | 주식회사 뉴파워 프라즈마 | Metal welding solar cell |
| CN106994546A (en) * | 2017-05-11 | 2017-08-01 | 江苏阿斯美特精工科技有限公司 | The common molten bath arc increasing material manufacturing TIG welding guns of multifibres and welder and increasing material manufacturing method |
| CN110216358A (en) * | 2019-04-30 | 2019-09-10 | 林肯电气管理(上海)有限公司 | A kind of efficient adjusting welding wire distribution submerged arc welding apparatus |
-
2019
- 2019-11-12 CN CN201911101281.9A patent/CN110788447A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55141374A (en) * | 1979-04-20 | 1980-11-05 | Nippon Kokan Kk <Nkk> | Narrow groove welding method by multielectrode arc welding |
| CN101837532A (en) * | 2009-03-19 | 2010-09-22 | 苏州威达焊割科技有限公司 | Steel tube multiple-wire internal welding machine nose |
| CN102430846A (en) * | 2011-10-21 | 2012-05-02 | 哈尔滨工业大学 | Bent conducting nozzle type twin-wire narrow-gap MIG/MAG (metal inert gas/metal active gas) welding torch |
| CN202377659U (en) * | 2011-12-27 | 2012-08-15 | 成都熊谷加世电器有限公司 | Integral double-wire welding gun |
| CN103273169A (en) * | 2013-05-15 | 2013-09-04 | 艾美特国际有限公司 | Multi-wire bead welding system and process thereof |
| KR20170056236A (en) * | 2015-11-13 | 2017-05-23 | 주식회사 뉴파워 프라즈마 | Metal welding solar cell |
| CN105414722A (en) * | 2015-12-29 | 2016-03-23 | 哈尔滨工业大学 | External nozzle twin-wire co-pool narrow-gap GMAW torch |
| CN106994546A (en) * | 2017-05-11 | 2017-08-01 | 江苏阿斯美特精工科技有限公司 | The common molten bath arc increasing material manufacturing TIG welding guns of multifibres and welder and increasing material manufacturing method |
| CN110216358A (en) * | 2019-04-30 | 2019-09-10 | 林肯电气管理(上海)有限公司 | A kind of efficient adjusting welding wire distribution submerged arc welding apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 蔡志伟: "《钢结构焊接工艺及实施》", 28 February 2015, 哈尔滨工程大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014907A (en) * | 2019-11-18 | 2020-04-17 | 申英强 | Narrow-gap filament matrix type welding gun and welding process |
| CN112427778A (en) * | 2020-11-12 | 2021-03-02 | 唐山松下产业机器有限公司 | Multi-power-supply parallel welding system |
| CN112427778B (en) * | 2020-11-12 | 2022-03-11 | 唐山松下产业机器有限公司 | Multi-power-supply parallel welding system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2448708B1 (en) | Welding device and method | |
| CN110788447A (en) | Multi-power-supply parallel multi-wire efficient arc welding device and application thereof | |
| EP2379271B1 (en) | Double wire gmaw welding torch assembly and process | |
| CN110125518A (en) | One kind three wire bonds welding system arranged side by side and method | |
| CN110216358A (en) | A kind of efficient adjusting welding wire distribution submerged arc welding apparatus | |
| US9511440B2 (en) | Methods and systems for multi-wire surfacing | |
| CN110681948B (en) | Single-power-supply three-wire co-molten-drop electric arc additive manufacturing system | |
| CN108788395A (en) | A kind of integral type TIG by the double wire feeds of sidewall symmetry welds nozzle and welding gun | |
| CN101885103A (en) | Arc-welding method | |
| CN103273169A (en) | Multi-wire bead welding system and process thereof | |
| US20140263250A1 (en) | Welding diffuser with debris removal | |
| CN211840537U (en) | Narrow-gap filament matrix type welding gun | |
| CN105377496A (en) | Polarity changing pin connector | |
| CN112427778B (en) | Multi-power-supply parallel welding system | |
| CN111014907A (en) | Narrow-gap filament matrix type welding gun and welding process | |
| CN110216359B (en) | Multi-wire submerged arc welding equipment | |
| CN104625361A (en) | Double-electric-arc and cold wire pulse composite welding three-wire welding gun and welding system and method | |
| CN102837119A (en) | Double-wire powder gas protection overlaying welding torch | |
| CN207447578U (en) | Double ignition tip double-wire welding guns of integral type | |
| CN113732446B (en) | Bypass coupling three-wire indirect electric arc welding method with controllable electric arc space structure | |
| CN107225311A (en) | Double ignition tip double-wire welding guns of integral type | |
| CN220679642U (en) | Conductive nozzle capable of being used repeatedly | |
| CN210967409U (en) | Double wire feeding hot wire water cooling TIG welding gun | |
| CN212094784U (en) | TIG welding gun | |
| CN113333955A (en) | Narrow-spacing parallel wire feeding device for multi-wire additive manufacturing |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200214 |
|
| RJ01 | Rejection of invention patent application after publication |