CN102357719B - Double consumable electrode and single arc bypass coupled compound welding system and method - Google Patents
Double consumable electrode and single arc bypass coupled compound welding system and method Download PDFInfo
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- CN102357719B CN102357719B CN 201110269628 CN201110269628A CN102357719B CN 102357719 B CN102357719 B CN 102357719B CN 201110269628 CN201110269628 CN 201110269628 CN 201110269628 A CN201110269628 A CN 201110269628A CN 102357719 B CN102357719 B CN 102357719B
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- 238000003466 welding Methods 0.000 title claims abstract description 190
- 238000000034 method Methods 0.000 title claims abstract description 28
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- 238000010891 electric arc Methods 0.000 claims description 24
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- 239000002131 composite material Substances 0.000 claims description 12
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- 238000010168 coupling process Methods 0.000 claims description 4
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- 230000008569 process Effects 0.000 abstract description 15
- 230000007547 defect Effects 0.000 abstract description 5
- 230000008018 melting Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 239000010953 base metal Substances 0.000 abstract 1
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- 229910052751 metal Inorganic materials 0.000 description 6
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- 229910052721 tungsten Inorganic materials 0.000 description 1
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Abstract
The invention discloses a double consumable electrode and single arc bypass coupled compound welding system and a welding method thereof. The compound welding system comprises a first welding machine, a second welding machine, a first welding wire and a second welding wire, wherein anodes of the first and second welding machines are connected with the first welding wire; the first welding wire and a workpiece form an arc; a cathode of the first welding machine is connected with the workpiece; the cathode of the second welding machine is connected with the second welding wire; and the second welding wire and the workpiece do not form the arc. By adopting the technical scheme provided by the invention, the melting efficiency of the welding wires is greatly promoted, high-efficient welding is realized, a stable welding process is realized, the heat input quantity of base metal is controlled, the possibility of occurring a welding defect is reduced, and the compound welding system is beneficial to acquiring excellent welding quality.
Description
Technical field
The invention provides a kind of novel welding system and method, more particularly, relate to a kind of pair of consumable electrode list electric arc bypass compound weldering that is coupled, relate to the welding engineering technical field.
Background technology
Traditional TIG weldering is because the current carrying capacity of tungsten electrode is limited, so arc power is restricted, and welding efficiency also is restricted.And the hot wire TIG welding can improve deposition rate and the speed of welding of TIG weldering.The hot wire TIG welding carries out preheating to welding wire on the basis of general T IG weldering, to improve hot input quantity, increase burn-off rate.Heating wire TIG filling weldering welding process is very stable, has good welding quality.But conventional hot wire TIG welding also has following shortcoming: the electric current by non-melt pole is very limited, and therefore, the welding wire loading in the unit interval is less, and welding efficiency is restricted.Compare with the heating wire TIG weldering that fills silk, two consumable electrode list electric arc bypass compound weldering that is coupled can significantly improve the welding wire deposition efficiency, thereby improves welding efficiency.
The application in welding is produced of MIG weldering is very extensive.In efficient welding, along with the raising of speed of welding, need to improve the welding wire deposition efficiency with the enough filling amounts of metal on guarantor unit's length weld seam.And the raising of welding wire deposition efficiency is accompanied by the significantly rising of welding current, and the significantly rising of welding current can increase welding process greatly to the hot input quantity of mother metal, and this is totally unfavorable for being avoided or alleviating weld defect.No matter be the weldering of MIG monofilament or conventional MIG Double Wire Welding (as TANDEM, TWIN ARC), all equate with electric current by workpiece by the electric current of welding wire.Improve electric current by welding wire and all can improve electric current by workpiece simultaneously when High Speed Welding, this just might produce weld defects such as burn-through, undercut.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of novel and the practical compound welding system of mariages pulse and method have been proposed, can significantly improve the welding wire deposition efficiency, realize efficient welding, can realize very stable welding process again, control the hot input quantity of mother metal, reduce to occur the possibility of weld defect, help to obtain good welding quality.
The object of the invention is achieved by following technical proposals:
A kind of pair of consumable electrode list electric arc bypass coupling composite welding system comprises first welding machine, second welding machine, first welding wire and second welding wire, wherein:
The anode of first welding machine and second welding machine is connected with first welding wire jointly, and the negative electrode of first welding machine is connected with workpiece, and the negative electrode of second welding machine is connected with second welding wire, and wherein first welding wire and workpiece form electric arc, and second welding wire and workpiece do not form electric arc.
In composite welding of the present invention system, the welding wire of arcing in the welding process (first welding wire) is called main silk, and its corresponding electric arc is called minor arc.The workpiece ammeter is shown I
1, the also so expression of main other parameter of silk is expressed as U as main filament voltage
1In the welding process not the welding wire of arcing (second welding wire) be called from silk.Be shown I from the silk ammeter
2, from the also so expression of other parameter of silk, as being expressed as U from filament voltage
2Common and the main wire-feed motor of the anode of the anode of first welding machine and second welding machine is connected, and the negative electrode of first welding machine is connected with workpiece, the negative electrode of second welding machine be connected from the silk wire-feed motor.The welding total current is flowed out by main silk, divides electric current I
1Flow into first welding machine by workpiece, divide electric current I
2By flow into second welding machine from silk.
The core of this hybrid system is the compound mode of two sources of welding current and the combining form between two welding wires.It is pulse output that generator characteristic requires main silk power supply, is constant voltage output from the silk power supply.The welding wire compound mode requires two distances of welding wire termination on workpiece, main silk and stem elongation degree from silk, two welding wires respectively with the angle of horizontal direction, the angle between two welding wires will meticulous configuration.In the welding system, each location parameter is as follows:
(1) main silk is 0～5mm with the distance of termination on workpiece from silk
(2) the stem elongation degree of main silk is 15～20mm
(3) the stem elongation degree from silk is 20～30mm
(4) main silk is 35 °～80 ° with the angle on workpiece water plane
(5) angle from silk and workpiece water plane is 50 °～75 °
(6) main silk and be 35 °～95 ° from the angle between the silk
Each location parameter is preferably as follows:
(1) main silk is 0～5mm with the distance of termination on workpiece from silk
(2) the stem elongation degree of main silk is 15～20mm
(3) the stem elongation degree from silk is 20～30mm
(4) main silk is 40 °～60 ° with the angle on workpiece water plane
(5) angle from silk and workpiece water plane is 55 °～70 °
(6) main silk and be 45 °～80 ° from the angle between the silk
The method that foundation composite welding of the present invention system welds, concrete steps are as follows:
(1) according to composite welding of the present invention system connection device, inserts power supply;
(2) power parameter of adjusting first welding machine and second welding machine;
(3) wire feed rate of adjusting welding wire machine;
(4) adjust two welding wires angle separately, the stem elongation degree of two welding wires, two distances of welding wire termination on workpiece;
(5) welding
Supply frequency in the described step (1) can be selected 50Hz for use.
Wire feed rate in the described step (2) is 1～10m/min.
In the welding system, each location parameter is as follows:
(1) main silk is 0～5mm with the distance of termination on workpiece from silk
(2) the stem elongation degree of main silk is 15～20mm
(3) the stem elongation degree from silk is 20～30mm
(4) main silk is 35 °～80 ° with the angle on workpiece water plane
(5) angle from silk and workpiece water plane is 50 °～75 °
(6) main silk and be 35 °～95 ° from the angle between the silk
Each location parameter is preferably as follows:
(1) main silk is 3～5mm with the distance of termination on workpiece from silk
(2) the stem elongation degree of main silk is 15～20mm
(3) the stem elongation degree from silk is 20～30mm
(4) main silk is 40 °～60 ° with the angle on workpiece water plane
(5) angle from silk and workpiece water plane is 55 °～70 °
(6) main silk and be 45 °～80 ° from the angle between the silk
In technical scheme of the present invention, at main silk and workpiece, electric arc from forming between the silk, main silk is anode in the welding process, workpiece and be all negative electrode from silk.Main silk power supply (first welding machine) adopts pulse mode, main silk electric arc pulse change, and main silk droplet transfer mode is one in an arteries and veins.Adopt constant voltage mode from silk power supply (second welding machine).From silk arcing not, welding wire is inserted in the molten bath or melt tank edge, and contacts with workpiece all the time in the welding process.In the welding process, main silk is by the arc heat fusing, and is made up of two parts from the silk melting heat: the heat effect of electric arc and from the resistance heat of this section welding wire between silk ignition tip and the workpiece.The bypass of two consumable electrode list electric arc be coupled compound weldering welding process the high-speed camera picture as shown in Figure 2.Its corresponding signal of telecommunication is shown in 0.511s to 0.529s time interval among Fig. 3 (0 to the dotted line place on the time shaft), and as shown in Figure 3, main silk electric current is with opposite from the silk current phase.When main silk electric current reaches peak value, be base value just from the silk electric current.Can avoid like this importing to cause when increasing suddenly quick-fried disconnected from silk in main silk peak heat.
By controlling two distances between the welding wire, the angle between two welding wires, the distance between main silk ignition tip and the workpiece is adjusted the welding wire geometrical arrangements from the distance between silk ignition tip and the workpiece, realizes stable welding process.Main silk droplet transfer mode be one in a regular arteries and veins in the welding process, can realize stablely by the silk filling process of solid-state welding wire to liquid molten pool metal from silk, so does not splash in the welding process, and metal transfer ten is smooth, and welding process is very stable.
Compared with prior art, composite welding system and method for the present invention has following advantage:
(1) compare with heating wire TIG silk filling weldering, owing to be two consumable electrode welding wires, two welding wires are sent to simultaneously.Under the prerequisite of the existing suitable wire feed rate of main silk, have from silk again and at full speed send to continuously.Therefore, two consumable electrode list electric arc bypass compound weldering that is coupled can significantly improve the welding wire deposition efficiency, realizes stable efficient welding process.
(2) compare with conventional twin-wire MIG Double Wire Welding with the weldering of MIG monofilament, two consumable electrode list electric arc bypass compound weldering that is coupled can keep when high-speed welding under the condition of high welding wire deposition efficiency, the possibility of weld defect is avoided or reduced to occur to control to the hot input quantity of mother metal.
Description of drawings
Fig. 1 is the structural representation of composite welding of the present invention system, and wherein 1 is that first welding machine, 2 is that first welding wire (main silk), 3 is that first welding gun, 4 is that second welding gun, 5 is that second welding wire (from silk), 6 is that second welding machine, 7 is workpiece.
Fig. 2 is two consumable electrode list electric arc bypasses compound weldering high-speed camera pictures (FASTCAMSUPER 10KC) that are coupled.
Fig. 3 is two consumable electrode list electric arc bypasses compound weldering electric signal waveforms that are coupled.
Fig. 4 is the be coupled outward appearance photo of compound weldering welding bead of 8 pairs of consumable electrode lists of embodiments of the invention electric arc bypass.
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with specific embodiment.
The constructed two consumable electrode list electric arc bypass of the present invention compound weldering basic welding system that is coupled comprises: (1 of Lincoln INVERTECTMV300-I welding machine, use as second welding machine), (1 of Lincoln INVERTEC V350 PRO type welding machine, use as first welding machine), the semi-automatic wire-feed motor of S-86A type (2), the rush-harvesting and rush-planting anchor clamps that angle and position are adjustable (1), straight line workbench (1).In addition, also comprise welding auxiliary equipment such as gas cylinder air valve, remote-control box.The welding system schematic diagram as shown in Figure 1.The concrete parameter of welding procedure sees Table 1 and table 2.
Table 1 pair consumable electrode list electric arc bypass compound weldering parameter and the MIG monofilament weldering parameter that is coupled
The be coupled test data contrast of compound weldering and MIG monofilament weldering of table 2 pair consumable electrode list electric arc bypass
The result: 1 is the weldering of MIG monofilament, and 2～8 are two consumable electrode list electric arc bypasses compound weldering that is coupled
More than the present invention has been done exemplary description; should be noted that; under the situation that does not break away from core of the present invention, the replacement that is equal to that any simple distortion, modification or other those skilled in the art can not spend creative work all falls into protection scope of the present invention.
Claims (7)
1. two consumable electrode list electric arc bypasses coupling composite welding system, comprise first welding machine, second welding machine, first welding wire and second welding wire, it is characterized in that, wherein: the anode of first welding machine and second welding machine is connected with first welding wire jointly, the negative electrode of first welding machine is connected with workpiece, and the negative electrode of second welding machine is connected with second welding wire, and wherein first welding wire and workpiece form electric arc, second welding wire and workpiece do not form electric arc, and each location parameter is as follows:
The distance of termination on workpiece of (1) first welding wire and second welding wire is 0 ~ 5mm;
The stem elongation degree of (2) first welding wires is 15 ~ 20mm;
The stem elongation degree of (3) second welding wires is 20 ~ 30mm;
The angle on (4) first welding wires and workpiece water plane is 35 ° ~ 80 °;
The angle on (5) second welding wires and workpiece water plane is 50 ° ~ 75 °;
Angle between (6) first welding wires and second welding wire is 35 ° ~ 95 °.
2. a kind of pair of consumable electrode list electric arc bypass coupling composite welding according to claim 1 system is characterized in that, in the described composite welding system, each location parameter is as follows:
The distance of termination on workpiece of (1) first welding wire and second welding wire is 0 ~ 5mm;
The stem elongation degree of (2) first welding wires is 15 ~ 20mm;
The stem elongation degree of (3) second welding wires is 20 ~ 30mm;
The angle on (4) first welding wires and workpiece water plane is 40 ° ~ 60 °;
The angle on (5) second welding wires and workpiece water plane is 55 ° ~ 70 °;
Angle between (6) first welding wires and second welding wire is 45 ° ~ 80 °.
3. method of utilizing the described composite welding of claim 1 system to weld is characterized in that concrete steps are as follows:
(1) according to the described composite welding of claim 1 system connection device, inserts power supply;
(2) power parameter of adjusting first welding machine and second welding machine;
(3) wire feed rate of adjusting welding wire machine;
(4) adjust two welding wires angle separately, the stem elongation degree of two welding wires, two distances of welding wire termination on workpiece;
(5) welding.
4. welding method according to claim 3 is characterized in that, the supply frequency in the described step (1) is selected 50Hz for use.
5. welding method according to claim 3 is characterized in that, in the described step (2), first welding machine adopts pulse mode, and second welding machine adopts the constant voltage mode.
6. welding method according to claim 3 is characterized in that, the wire feed rate in the described step (3) is 1 ~ 10m/min.
7. welding method according to claim 3 is characterized in that, it is characterized in that, the distance of termination on workpiece of the-welding wire and second welding wire is 0 ~ 5mm; The stem elongation degree of first welding wire is 15 ~ 20mm; The stem elongation degree of second welding wire is 20 ~ 30mm; The angle on first welding wire and workpiece water plane is 40 ° ~ 60 °; The angle on second welding wire and workpiece water plane is 55 ° ~ 70 °; Angle between first welding wire and second welding wire is 45 ° ~ 80 °.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102699546A (en) * | 2012-06-05 | 2012-10-03 | 天津大学 | Laser double-consumable-electrode single-arc bypass-coupling hybrid welding system and method |
| CN102848085A (en) * | 2012-08-15 | 2013-01-02 | 天津大学 | Laser-single power double-wire pulse arc hybrid welding system and use method for same |
| CN103028820B (en) * | 2012-12-20 | 2015-08-19 | 天津大学 | A kind of methods and applications utilizing four integral type High Speed Welding welding systems to carry out welding |
| CN104117757B (en) * | 2014-08-06 | 2017-01-18 | 山东大学 | Efficient low heat input and double-wire surfacing method |
| CN105290576A (en) * | 2015-09-29 | 2016-02-03 | 湘潭大学 | Real-time detecting method and device for surface topography of swing arc MAG welding molten pool |
| CN108406059B (en) * | 2018-02-09 | 2020-03-10 | 江苏科技大学 | Arc welding method and device for narrow-gap consumable electrode added with auxiliary welding wire |
| CN114535762A (en) * | 2022-03-10 | 2022-05-27 | 江阴嘉云铝材有限公司 | Precise guide rail aluminum welding process for automatic facility |
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| JP2005042175A (en) * | 2003-07-24 | 2005-02-17 | Kobe Steel Ltd | Aluminum welded structure |
| CN1695866A (en) * | 2005-06-20 | 2005-11-16 | 北京工业大学 | Welding control method of diplonema MAG and welding source |
| CN101972883A (en) * | 2010-11-22 | 2011-02-16 | 马国红 | Full-penetration welding device of metal sheet |
| CN102069266A (en) * | 2010-12-30 | 2011-05-25 | 南昌大学 | Double arc welding method for low carbon steel pipes |
| CN102166700A (en) * | 2011-01-19 | 2011-08-31 | 深圳市瑞凌实业股份有限公司 | Hydroelectric integrated double-gun welding control system |
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| JPS6092075A (en) * | 1983-10-26 | 1985-05-23 | Ishikawajima Harima Heavy Ind Co Ltd | Two-electrodes two sides automatic welding method |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005042175A (en) * | 2003-07-24 | 2005-02-17 | Kobe Steel Ltd | Aluminum welded structure |
| CN1695866A (en) * | 2005-06-20 | 2005-11-16 | 北京工业大学 | Welding control method of diplonema MAG and welding source |
| CN101972883A (en) * | 2010-11-22 | 2011-02-16 | 马国红 | Full-penetration welding device of metal sheet |
| CN102069266A (en) * | 2010-12-30 | 2011-05-25 | 南昌大学 | Double arc welding method for low carbon steel pipes |
| CN102166700A (en) * | 2011-01-19 | 2011-08-31 | 深圳市瑞凌实业股份有限公司 | Hydroelectric integrated double-gun welding control system |
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