CN105562897A - Twin-wire bypass coupled arc efficient metal-inert gas (MIG) welding system - Google Patents
Twin-wire bypass coupled arc efficient metal-inert gas (MIG) welding system Download PDFInfo
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- CN105562897A CN105562897A CN201610142071.4A CN201610142071A CN105562897A CN 105562897 A CN105562897 A CN 105562897A CN 201610142071 A CN201610142071 A CN 201610142071A CN 105562897 A CN105562897 A CN 105562897A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
- B23K9/1735—Arc welding or cutting making use of shielding gas and of a consumable electrode making use of several electrodes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up 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
- B23K9/00—Arc welding or cutting
- B23K9/095—Monitoring or automatic control of welding parameters
-
- 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
-
- 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
-
- 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
- B23K9/235—Preliminary treatment
Abstract
The invention belongs to the technical field of welding and provides a novel twin-wire bypass coupled arc efficient metal-inert gas (MIG) welding system. By the adoption of the twin-wire bypass coupled arc efficient MIG welding system, the problems that an existing twin-wire bypass coupled arc efficient MIG welding system is complex in structure and high in cost are solved. The twin-wire bypass coupled arc efficient MIG welding system comprises a welding power source and a dynamic voltage adjusting device. The dynamic voltage adjusting device comprises an invert unit, a filtering unit, a voltage transformation unit and a direct-current output unit. The invert unit is used for inverting direct currents output by the positive electrode of the welding power source into alternating currents. The filtering unit is used for filtering current higher harmonics output by the invert unit in the inverting process. The voltage transformation unit is used for converting the output voltage of the invert unit into the voltage equivalent to the compensation amount of the bypass voltage. The direct-current output unit is used for rectifying the alternating currents output by the voltage transformation unit into the direct currents and outputting the direct currents. Due to the fact that the welding system comprises the welding power source, the system structure is simplified, and the welding cost is reduced.
Description
Technical field
The invention belongs to welding technology field, be specifically related to the efficient MIG welding system of a kind of mariages bypass coupling electric arc.
Background technology
Welding, also referred to as welding, be a kind of with the mode jointing metal of heating, high temperature or high pressure or other thermoplastics as the manufacturing process of plastics and technology.Welding (metalinert-gaswelding; MIG welds); refer under inert gas shielding, a kind of welding method utilizing consumable electrode (welding wire) and the arc heat produced between welded piece to melt mother metal to realize being connected.
Efficiently, high-quality and low consumption be an urgent demand that current manufacturing industry proposes solder technology, is also the direction of solder technology development.At present, the existing efficient MIG soldering method of various new mariages, as Tandem and Twins welding method, but, Tandem and Twins welding method be all welding wire and mother metal with the welding method of electric current, cause the increase along with welding current, the input of mother metal heat is also increasing, thus cause weld grain thick, cause the decline of base metal tenacity and the raising of residual stress.
For reducing the input of mother metal heat, improve weldquality, propose the efficient MIG welding system of a kind of mariages bypass coupling electric arc, as shown in Figure 1, the efficient MIG welding system of existing mariages bypass coupling electric arc comprises main road power supply 11, bypass supply 10, main road wire-feed motor 19, bypass wire-feed motor 18, main road welding gun 13, bypass welding gun 12, main road welding wire 15 and bypass welding wire 14, the positive pole of main road power supply 11 connects main road wire-feed motor 19, this main road wire-feed motor 19 is connected with main road welding gun 13, main road welding wire 15 is installed on main road welding gun 13, and the negative pole of main road power supply 11 connects welded piece 20; Bypass supply 10 positive pole connects main road wire-feed motor 19, and bypass supply 10 negative pole connects bypass wire-feed motor 18, and this bypass wire-feed motor 18 is connected with bypass welding gun 12, and bypass welding wire 14 is installed on bypass welding gun 12.Wherein, main road welding gun 13 and bypass welding gun 12 are MIG welding gun.During welding, main road electric arc 17 burns between main road welding wire 15 and welded piece 20, for melting main road welding wire 15 and welded piece 20; Side-arcing 16 burns between bypass welding wire 14 and main road electric arc arc column district, main road electric arc 17 is coupled with side-arcing 16, side-arcing 16 has shunted the welding current that part flows into welded piece 20 while fusing bypass welding wire 14, thus reduces the heat input of welded piece 20.Wherein, main road power supply 11 is for regulating the welding parameter of main road, bypass supply 10 is for regulating the welding parameter of bypass, in welding process, side-arcing voltage is regulated by bypass supply 10, make side-arcing welding parameter and main road arc welding parameter matching, thus make the coupled arc smooth combustion of side-arcing 16 and main road electric arc 17.But main road power supply 11 and bypass supply 10 are two independently sources of welding current, cause existing mariages bypass coupling electric arc efficient MIG welding system complex structure, welding cost is higher.
Summary of the invention
In order to solve current mariages bypass coupling electric arc efficient MIG welding system complex structure, the problem that cost is high, the present invention proposes the efficient MIG welding system of a kind of mariages bypass coupling electric arc, the efficient MIG welding system of this mariages bypass coupling electric arc comprises a source of welding current, thus simplify the structure of the efficient MIG welding system of mariages bypass coupling electric arc, reduce welding cost.
The efficient MIG welding system of mariages bypass coupling electric arc of the present invention comprises the source of welding current, main road wire-feed motor, bypass wire-feed motor, main road welding gun, bypass welding gun, main road welding wire, bypass welding wire and voltage acquisition computing unit, also comprise dynamic voltage regulation device, the input of this dynamic voltage regulation device is connected with the positive pole of the described source of welding current, and the output of this dynamic voltage regulation device is connected with described bypass wire-feed motor, the positive pole of the described source of welding current is connected with described main road wire-feed motor, and the negative pole of the described source of welding current is connected with welded piece, described voltage acquisition computing unit is connected with described dynamic voltage regulation device, this voltage acquisition computing unit is for gathering main road arc voltage and side-arcing voltage, and calculate the compensation rate of side-arcing voltage, then the compensation rate of this bypass voltage is delivered to described dynamic voltage regulation device, described dynamic voltage regulation device comprises inversion unit, filter unit, voltage transformation unit and DC output unit, described inversion unit, described filter unit, described voltage transformation unit is connected successively with described DC output unit, the DC inverter that described inversion unit is used for described source of welding current positive pole to export is alternating current, described filter unit is used for the electric current higher hamonic wave that described in filtering, inversion unit exports at reversals, described voltage transformation unit is used for the output voltage of described inversion unit to become the voltage equal with the compensation rate of described bypass voltage, the AC rectification that described DC output unit is used for described voltage transformation unit to export is direct current and exports.
Wherein, described inversion unit is full-control type inverter.
Wherein, described filter unit is output filter.
Wherein, described voltage transformation unit is series transformer.
Wherein, described series transformer comprises several slide rheostats.
Wherein, during welding, described main road welding wire is vertical with described welded piece, and the angle of described bypass welding wire and described main road welding wire is 25-50 degree.
Wherein, during welding, protective gas is the mist of inert gas or inert gas and carbon dioxide.
Wherein, described protective gas is pure argon.
Mariages bypass coupling electric arc of the present invention efficient MIG welding system has following beneficial effect:
The efficient MIG welding system of mariages bypass coupling electric arc of the present invention only includes a source of welding current, this source of welding current provides voltage for the smooth combustion of main road electric arc, dynamic voltage regulation device of the present invention compensates side-arcing voltage simultaneously, greatly reduce the impact of side-arcing voltage by main road arc voltage like this, more easily control side-arcing voltage, the welding parameter of side-arcing is mated with the welding parameter of main road electric arc, ensure coupled arc smooth combustion, improve welding quality, the efficient MIG welding system of mariages bypass coupling electric arc of the present invention only includes a power supply, thus simplify the structure, reduce welding cost.Dynamic voltage regulation device also increases the excursion of side-arcing voltage simultaneously, the welding parameter matching range of side-arcing and main road electric arc is broadened, the control of such side-arcing voltage is easier, the welding parameter of side-arcing is more easily made to mate with the welding parameter of main road electric arc, ensure coupled arc smooth combustion, improve welding quality.Mariages bypass coupling electric arc of the present invention efficient MIG welding system achieves the welding of high wire burn-off rate, the input of low mother metal heat, low dilution rate, obtains good appearance of weld.
Accompanying drawing explanation
Fig. 1 is the structural representation of the efficient MIG welding system of existing mariages bypass coupling electric arc;
Fig. 2 is the structural representation of the efficient MIG welding system of mariages bypass coupling electric arc of the present invention.
Detailed description of the invention
Technical scheme of the present invention is introduced below in conjunction with accompanying drawing.
As shown in Figure 2, the efficient MIG welding system of mariages bypass coupling electric arc of the present invention comprises the source of welding current 27, main road wire-feed motor 19, bypass wire-feed motor 18, main road welding gun 13, bypass welding gun 12, main road welding wire 15, bypass welding wire 14, voltage acquisition computing unit 26 and dynamic voltage regulation device 21, the input of this dynamic voltage regulation device 21 is connected with the positive pole of the source of welding current 27, the output of this dynamic voltage regulation device 21 is connected with bypass wire-feed motor 18, this bypass wire-feed motor 18 is connected with bypass welding gun 12, and bypass welding wire 14 is installed on bypass welding gun 12.The positive pole of the source of welding current 27 is connected with main road wire-feed motor 19, and this main road wire-feed motor 19 is connected with main road welding gun 13, and main road welding wire 15 is installed on main road welding gun 13, and the negative pole of the source of welding current 27 is connected with welded piece 20.During welding, main road electric arc 17 burns between main road welding wire 15 and welded piece 20, for melting main road welding wire 15 and welded piece 20; Side-arcing 16 burns between bypass welding wire 14 and main road electric arc arc column district, while fusing bypass welding wire 14, shunted the welding current that part flows into welded piece 20.Wherein, the source of welding current 27 can select the existing source of welding current, and the source of welding current 27 provides voltage for the smooth combustion of main road electric arc 17, ensures that main road electric arc 17 has good self-regulation effect.
Voltage acquisition computing unit 26 is connected with dynamic voltage regulation device 21, this voltage acquisition computing unit 26 is for gathering main road arc voltage and side-arcing voltage, then according to the main road arc voltage collected and side-arcing voltage, utilize Difference Calculation method to calculate the compensation rate of side-arcing voltage, and the compensation rate of this bypass voltage is delivered to dynamic voltage regulation device 21.In welding process, when molten sub-jet or spray transfer, due to extraneous factor interference, main road arc voltage can change, main road electric arc 17 is coupled owing to there occurs with side-arcing 16, the change of main road arc voltage can cause side-arcing voltage to change, and side-arcing 16 does not have independently Power supply, side-arcing voltage is more subject to the change of main road arc voltage and unstability, so just need to compensate side-arcing voltage, to reduce the impact of main road arc voltage on side-arcing voltage.
Dynamic voltage regulation device 21 comprises inversion unit 22, filter unit 23, voltage transformation unit 24 and DC output unit 25, and inversion unit 22, filter unit 23, voltage transformation unit 24 are connected successively with DC output unit 25.Inversion unit 22 is alternating current for the DC inverter exported by the source of welding current 27 positive pole, and inversion unit 22 can be full-control type inverter.DC inverter is being meeting generation current higher hamonic wave in alternating current process by inversion unit 22, filter unit 23 is for this electric current higher hamonic wave of filtering, inversion unit 22 outlet side is avoided to occur surge voltage and damage components and parts, make inversion unit 22 output current wave be regular sine wave, filter unit 23 can be output filter simultaneously.Voltage transformation unit 24 is for becoming the voltage equal with the compensation rate of bypass voltage by the output voltage of inversion unit 22, DC output unit 25 is direct current for AC rectification voltage transformation unit 24 exported and exports to bypass wire-feed motor 18, to compensate side-arcing voltage.Voltage acquisition computing unit 26 calculates the compensation rate of side-arcing voltage, the output voltage of inversion unit 22 is become the voltage equal with the compensation rate of bypass voltage by voltage transformation unit 24, the voltage equal with the compensation rate of bypass voltage is outputted to side-arcing by DC output unit 25, the voltage that namely source of welding current 27 exports by dynamic voltage regulation device 21 carries out transformation, then the voltage after transformation is exported to bypass wire-feed motor 18 by dynamic voltage regulation device 21, so just side-arcing voltage is compensated, wire feed rate specifically by changing bypass welding current or bypass welding wire 14 realizes, greatly reduce the impact of side-arcing voltage by main road arc voltage like this, more easily control side-arcing voltage, the welding parameter of side-arcing is mated with the welding parameter of main road electric arc, ensure coupled arc smooth combustion, improve welding quality.Dynamic voltage regulation device 21 increases the excursion of side-arcing voltage simultaneously, the welding parameter matching range of main road electric arc and side-arcing is broadened, the control of such side-arcing voltage is easier, the welding parameter of side-arcing is more easily made to mate with the welding parameter of main road electric arc, ensure coupled arc smooth combustion, improve welding quality.Wherein, voltage transformation unit 24 can also improve the voltage that inversion unit 22 exports, and can increase the arcing voltage of bypass like this, make side-arcing more easily by main road arc ignition.Wherein, voltage transformation unit 24 can be series transformer, and this series transformer comprises several slide rheostats.Dynamic voltage regulation device 21 of the present invention can be integrated in the source of welding current 27.
Embodiment
Be 60mm by length, wide is 20mm, thickness is that the Q235 low carbon steel plate of 6mm is as workpiece 20 to be welded, adopt the efficient MIG welding system of mariages bypass coupling electric arc of the present invention to weld, wherein, inversion unit 22 is full-control type inverter, filter unit 23 is output filter, voltage transformation unit 24 is series transformer, and main road welding wire 15 and bypass welding wire 14 all adopt the ER415L carbon steel welding wire of Φ 1.6mm, and concrete welding step is as follows:
(1) before welding, remove the surface and oil contaminant of workpiece 20 to be welded with acetone, remove the surface film oxide of workpiece 20 to be welded with stainless steel wire;
(2) workpiece 20 to be welded is fixed on weld jig, adopts disk diffusion method welding manner;
(3) main road welding wire 15 is vertical with workpiece 20 to be welded, and bypass welding wire 14 and main road welding wire 15 form an angle and place, and the angle between bypass welding wire 14 and main road welding wire 15 is within the scope of 25-50 degree; Protective gas adopts pure argon, and main road arc protection throughput is 10-12L/min, and side-arcing shielding gas flow amount is 5-7L/min;
(4) main road welding current is 550A, and main road weldingvoltage is 38V, and weldingvoltage is provided by the source of welding current 27 (Hua Yilong NBC-630-S); Bypass welding current is 320A, and the primary voltage that the source of welding current 27 provides is dropped to 24V by dynamic voltage regulation device 21 by bypass weldingvoltage, and to make side-arcing and main road arc stability burn, speed of welding is 1m/min;
(5) the clean stem elongation of main road welding wire 15 is 10mm, the clean stem elongation of bypass welding wire 14 is 8mm, the nozzle of main road welding gun 13 is 20mm to the distance of workpiece 20 to be welded, the nozzle of bypass welding gun 12 is 30mm to the vertical range of workpiece 20 to be welded, wherein, the clean stem elongation of welding wire refers to the solid-state welding wire length outside welding gun front end;
(6) after above parameter initialization, starting switch carries out overlay welding experiment;
(7) welding is to workpiece 20 end to be welded, and close welding switch, welding process terminates.
Claims (8)
1. the efficient MIG welding system of mariages bypass coupling electric arc, comprise the source of welding current, main road wire-feed motor, bypass wire-feed motor, main road welding gun, bypass welding gun, main road welding wire, bypass welding wire and voltage acquisition computing unit, it is characterized in that, also comprise dynamic voltage regulation device, the input of this dynamic voltage regulation device is connected with the positive pole of the described source of welding current, and the output of this dynamic voltage regulation device is connected with described bypass wire-feed motor, the positive pole of the described source of welding current is connected with described main road wire-feed motor, and the negative pole of the described source of welding current is connected with welded piece, described voltage acquisition computing unit is connected with described dynamic voltage regulation device, this voltage acquisition computing unit is for gathering main road arc voltage and side-arcing voltage, and calculate the compensation rate of side-arcing voltage, then the compensation rate of this bypass voltage is delivered to described dynamic voltage regulation device, described dynamic voltage regulation device comprises inversion unit, filter unit, voltage transformation unit and DC output unit, described inversion unit, described filter unit, described voltage transformation unit is connected successively with described DC output unit, the DC inverter that described inversion unit is used for described source of welding current positive pole to export is alternating current, described filter unit is used for the electric current higher hamonic wave that described in filtering, inversion unit exports at reversals, described voltage transformation unit is used for the output voltage of described inversion unit to become the voltage equal with the compensation rate of described bypass voltage, the AC rectification that described DC output unit is used for described voltage transformation unit to export is direct current and exports.
2. the efficient MIG welding system of mariages bypass coupling electric arc according to claim 1, it is characterized in that, described inversion unit is full-control type inverter.
3. the efficient MIG welding system of mariages bypass coupling electric arc according to claim 1 and 2, it is characterized in that, described filter unit is output filter.
4. the efficient MIG welding system of mariages bypass coupling electric arc according to claim 1 and 2, it is characterized in that, described voltage transformation unit is series transformer.
5. the efficient MIG welding system of mariages bypass coupling electric arc according to claim 4, it is characterized in that, described series transformer comprises several slide rheostats.
6. the efficient MIG welding system of mariages bypass coupling electric arc according to claim 1 and 2, is characterized in that, during welding, described main road welding wire is vertical with described welded piece, and the angle of described bypass welding wire and described main road welding wire is 25-50 degree.
7. the efficient MIG welding system of mariages bypass coupling electric arc according to claim 1 and 2, is characterized in that, during welding, protective gas is the mist of inert gas or inert gas and carbon dioxide.
8. the efficient MIG welding system of mariages bypass coupling electric arc according to claim 7, it is characterized in that, described protective gas is pure argon.
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Cited By (7)
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| CN108406059A (en) * | 2018-02-09 | 2018-08-17 | 江苏科技大学 | Add the narrow clearance melting electrode arc-welding method and device of auxiliary welding wire |
| CN109954959A (en) * | 2019-04-01 | 2019-07-02 | 兰州理工大学 | A kind of double arc bypass type buried arc welding methods of single supply |
| WO2020052049A1 (en) * | 2018-09-14 | 2020-03-19 | 大连理工大学 | Gas shielded triple-wire indirect electric-arc welding method, device, and application thereof |
| CN111250828A (en) * | 2020-02-19 | 2020-06-09 | 河北科技大学 | High-frequency AC/DC double-wire MIG welder power supply |
| CN111390342A (en) * | 2020-04-23 | 2020-07-10 | 欧地希机电（青岛）有限公司 | Welding power supply with arc voltage automatic compensation |
| CN111545870A (en) * | 2020-05-13 | 2020-08-18 | 南京航空航天大学 | Functional gradient material dual-wire dual-arc additive manufacturing system and method |
| CN113579434A (en) * | 2021-08-06 | 2021-11-02 | 广州文冲船厂有限责任公司 | Submerged arc welding tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| WO2020052049A1 (en) * | 2018-09-14 | 2020-03-19 | 大连理工大学 | Gas shielded triple-wire indirect electric-arc welding method, device, and application thereof |
| CN109954959A (en) * | 2019-04-01 | 2019-07-02 | 兰州理工大学 | A kind of double arc bypass type buried arc welding methods of single supply |
| CN109954959B (en) * | 2019-04-01 | 2020-09-11 | 兰州理工大学 | Single-power-supply double-arc shunting type submerged arc welding method |
| CN111250828A (en) * | 2020-02-19 | 2020-06-09 | 河北科技大学 | High-frequency AC/DC double-wire MIG welder power supply |
| CN111390342A (en) * | 2020-04-23 | 2020-07-10 | 欧地希机电（青岛）有限公司 | Welding power supply with arc voltage automatic compensation |
| CN111545870A (en) * | 2020-05-13 | 2020-08-18 | 南京航空航天大学 | Functional gradient material dual-wire dual-arc additive manufacturing system and method |
| CN113579434A (en) * | 2021-08-06 | 2021-11-02 | 广州文冲船厂有限责任公司 | Submerged arc welding tool |
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