CN1039202A - Single-power plasma welding method with molten electrode protected by gas - Google Patents
Single-power plasma welding method with molten electrode protected by gas Download PDFInfo
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- CN1039202A CN1039202A CN 88102665 CN88102665A CN1039202A CN 1039202 A CN1039202 A CN 1039202A CN 88102665 CN88102665 CN 88102665 CN 88102665 A CN88102665 A CN 88102665A CN 1039202 A CN1039202 A CN 1039202A
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Abstract
The method that a kind of plasma MIG welding connects only powers for plasma-arc and two electric arcs of MIG electric arc with a power supply simultaneously; The nozzle bore arranged concentric of non-melt electrode and welding torch, plasma-arc burns between non-melt electrode and workpiece; Consumable electrode is oblique sending in the plasma arc from the nozzle hole wall, and the MIG arc burning and is surrounded by plasma-arc between the consumable electrode and workpiece that link to each other with nozzle.Present device is simple, and control is convenient.Simultaneously electrode arrangement mode of the present invention can make the electric current allowable of plasma arc increase greatly, has given prominence to the characteristics of PLASMA ARC WELDING, be suitable for the rapid welding of big fusion penetration, and electric arc is very stable, and welding process does not have and splashes.The present invention can not only carry out single-run welding, also can carry out multi-pass welding and built-up welding.
Description
The present invention relates to a kind of plasma _ consumable electrode gas protection welding method.
Plasma _ gas metal-arc welding (hereinafter to be referred as plasma MIG welding) method is by the at first invention in 1972 of the Dutch Philips Netherlands of company welding laboratory.Previous method is adopted and is arranged vertically consumable electrode (welding wire), make it concentric with nozzle, the setover electrode arrangement mode of non-melt electrode (tungsten electrode), adopt a steep characteristic power supply to be connected between non-melt electrode and the workpiece in order to produce and stabilized plasma electric arc, adopt a flat characteristic power supply to be connected between consumable electrode and the workpiece to produce MIG arc-melting welding wire, this just mode that patent GB1338866 and GB1276110 adopt.Because in use there are deficiencies such as plasma-arc instability, easy current interruption and plasma current are little in said method, patent GB1556145 and DT3426410 improve said method.Non-melt electrode is made hollow annular electrode and nozzle coaxial arrangement, and consumable electrode enters in the plasma arc after vertically passing non-melt electrode of ring-type and nozzle with one heart.This mode has improved the stability of plasma-arc.
Though more than two kinds of plasma MIG welding methods different on version because they have all used two power supplys to give two electric arcs power supplies separately, make the welding equipment complexity, the control difficulty; And its stability is subjected to interactional influence the between two arcs, thereby influenced the reliability of the work of plasma arc.Again because of adopting about bigger MIG electric current (greater than 250A) and less plasma current (100A), so gas metal-arc welding (hereinafter to be referred as the MIG weldering) is with conspicuous characteristics, and the characteristics of plasma welding do not obtain bringing into play.This method only is suitable for the quick weldering and the high efficiency built-up welding of thin plate, the electric arc penetration capacity a little less than.
The objective of the invention is to the method for above-mentioned traditional plasma MIG welding is improved, make it the characteristics of outstanding plasma welding, improve the stability of plasma arc; Simplify welding equipment simultaneously, seek the new using method that a kind of plasma MIG welding connects.
The present invention is achieved in that
Have two electrodes, MIG arc between plasma arc between non-melt electrode and the workpiece and consumable electrode and the workpiece is worked simultaneously, when MIG electric arc is in plasma MIG welding among the encirclement of plasma arc and connects, only power simultaneously to plasma arc and two electric arcs of MIG arc with a power supply.Non-melt electrode and moment welding nozzle hole arranged concentric, plasma arc burns between non-melt electrode and workpiece, then the aperture from the nozzle hole wall is oblique sends into the plasma arc for consumable electrode, the MIG arc burning and is surrounded by plasma-arc between the consumable electrode and workpiece that link to each other with nozzle.In the present invention, the power supply and the current regulator that comprise a steep characteristic with a power supply simultaneously to the electric power system of two electric arc power supplies.One utmost point (negative pole) of power supply is divided into two-way, and wherein one the tunnel links to each other with non-melt electrode, and another road links to each other with nozzle through current regulator, and consumable electrode retreads in sending into plasma arc through the wire feed hole on the nozzle wall again; Another utmost point (positive pole) of power supply directly links to each other with workpiece.Regulate the size of current that the current regulator in this system can be regulated two arcs respectively.
The present invention is because the steep characteristic power supply that only adopts a routine is given two electric arcs power supplies simultaneously, thereby makes simplified equipment, and control is convenient; Simultaneously owing on the arrangement of electrode, take the mode of non-melt electrode and nozzle bore arranged concentric, consumable electrode deflection layout, thereby the electric current allowable of plasma arc is increased greatly (Ip can reach more than the 400A), given prominence to the characteristics of PLASMA ARC WELDING.And that the MIG arc only plays a part is auxiliary.But the transient mode of its metal still has short circuit, drips shape and three kinds of forms of jet, and when very little MIG electric current (as Iw=20A), just can realize spray transfer.When adopting mode of the present invention to weld, electric arc is very stable, and the metal transfer under three kinds of forms does not all have and splashes.The penetration capacity of plasma arc is strong simultaneously, is suitable for the rapid welding of big fusion penetration.
The concrete scheme that realizes the inventive method is provided by accompanying drawing and embodiment.
Accompanying drawing is for realizing the installation drawing of the inventive method.
Below in conjunction with a kind of details and working condition thereof that realizes the device of the inventive method of description of drawings:
In welding torch lower gun body (18), non-melt electrode (6) (as tungsten-cerium electrode) is arranged on the axis of welding torch and is concentric with nozzle bore (19).Plasma arc burns between non-melt electrode (6) and workpiece (16), and is subjected to the compression of nozzle bore (19), to produce stronger plasma arc.The oblique layout of consumable electrode (welding wire) (14) drives wire feed rolls (13) by motor (12) its wire feed hole (17) from the nozzle hole wall is sent into the plasma-arc (9).So just fix the contact point between plasma arc and the welding wire, thereby fixed the electric potential relation of the two.MIG arc (15) burning is between welding wire (14) and the workpiece (16) and be among the encirclement of plasma arc (9).Electric power system in the inventive method comprises power supply (1) and current regulator (11) (as the welding resistance box).One utmost point (positive pole) of steep characteristic power supply (1) is connected on the workpiece (16) through switch (8), and another utmost point (negative pole) is divided into two-way, wherein one the tunnel directly is connected on the water cooling tube (20) of non-melt electrode (6); Another road is connected on the welding torch lower gun body (18) through current regulator (11), switch (10), and actual like this is to have received on the consumable electrode (14).All by the allowable value of direct water-cooling with the raising plasma current, it is by the coaxial top that places nozzle bore for non-melt electrode (6) and nozzle (7).Power supply (1) has just realized being simultaneously plasma arc (9) and MIG arc (15) power supply like this.Nozzle (7) is used for compressing plasma arc (9), and the diameter of its compressing hole less (5mm) is in order to produce stronger plasma-arc.Nozzle adopts heat conduction red copper making preferably, and a wire feed aperture (17) is arranged on the nozzle hole wall, and in order to the oblique consumable electrode of sending into, nozzle is used as the ignition tip of welding wire (14) again both as the compression plasma-arc.Nozzle and non-melt electrode all adopt the recirculated water direct water-cooling.(20), (21) are respectively water inlet pipe among the figure, and (22), (23) are respectively outlet pipe.(24), (25) are respectively ion gas (Ar) and protection gas (Ar or the Ar+CO that produces plasma arc
2) air inlet pipe.Upper cutting gun (26) is made for insulating materials, in order to guarantee the insulation between non-melt electrode (6) and nozzle (7) and the whole lower gun body (18).Protective cover (27) is in order to carry peripheral protective gas.
The striking mode of single-power plasma MIG weldering adopts new type of safe high-frequency arc strike mode.The connection mode of its radio-frequency generator (5) is as figure, and arc process is as follows:
After cooling water, ion gas, protection gas all enter welding torch; Closing Switch (2) and (3); the floating voltage of the source of welding current (1) has been added between non-melt electrode (6) and the nozzle (7) together through the high frequency voltage that resistance (4) and radio-frequency generator (5) are taken place, and non-transfer type plasma arc between non-melt electrode (6) and the nozzle (7) ignites.After high frequency stops, Closing Switch (8), transfevent plasma arc (9) between non-melt electrode (6) and the workpiece (16) again ignites.Cut-off switch (2) and (3) then, cut off non-transfevent electric arc, Closing Switch (10), connect wire feeding motor (12), wire feed rolls (13) is sent into the wire feed hole (17) of consumable electrode (14) on the nozzle hole wall in the plasma arc (9), MIG arc between consumable electrode (14) and the workpiece (16) just ignites voluntarily, and two electric arcs burn simultaneously, begins normal single-power plasma MIG welding operation.Owing to adopt above-mentioned high-frequency arc strike mode, high-frequency discharge only takes place at an end of power supply, and high frequency voltage can not be added between power supply two ends, thereby has avoided power supply by the danger of high frequency breakdown.
Adopt single-power plasma MIG soldering method of the present invention to possess plasma and weld the dual characteristics that connects with plasma MIG welding.But square groove once welds two-sides forming to the steel plate below the 8mm, is particularly suitable for the back welding of thick walled steel tube, also is a desirable method for the rapid welding of cut deal and pipe.Single-run welding can not only be carried out, also multi-pass welding and built-up welding can be carried out.
Claims (5)
1, a kind of have two electrodes, MIG arc between plasma arc between non-melt electrode and the workpiece and consumable electrode and the workpiece is worked simultaneously, MIG electric arc is in the plasma-consumable electrode gas protection welding method among the encirclement of plasma arc, it is characterized in that, only power for plasma-arc (9) and (15) two electric arcs of MIG electric arc simultaneously with a power supply (1); Nozzle bore (19) arranged concentric of non-melt electrode (6) and welding torch (18), plasma-arc burns between non-melt electrode (6) and workpiece (16); Consumable electrode (14) is oblique sending in the plasma arc (9) from the nozzle hole wall, and the MIG arc burning and is surrounded by plasma-arc between consumable electrode that links to each other with nozzle (14) and workpiece (16).
2, method according to claim 1, it is characterized in that, comprise a steep characteristic power supply (1) and current regulator (11) to the electric power system of two electric arc power supplies simultaneously with a power supply, one utmost point (negative pole) of power supply is divided into two-way, wherein one the tunnel links to each other with non-melt electrode (6), another road links to each other with nozzle (7) through current regulator (11), consumable electrode (14) after nozzle wall is drawn, oblique sending in the plasma arc; Another utmost point (positive pole) of power supply (1) directly links to each other with workpiece (16); Regulate the size of current that current regulator (11) can be regulated two arcs respectively.
According to claim 1,2 described methods, it is characterized in that 3, non-melt electrode (6) all adopts direct water-cooling with nozzle (7), and non-melt electrode places the nozzle bore top coaxially.
According to claim 1,2 described methods, it is characterized in that 4, a wire feed aperture (17) is arranged on the water-cooled nozzle hole wall, in order to the oblique consumable electrode of sending into, the compression aperture of nozzle is less, and nozzle is used as the ignition tip of welding wire again both as the compression plasma-arc.
5, according to claim 1,2 described methods, it is characterized in that, adopt safe high-frequency arc strike mode, non-transfer type plasma arc between non-melt electrode (6) and the nozzle (7) ignites earlier, transfevent plasma arc (9) between non-melt pole (6) and the workpiece (16) again ignites, consumable electrode (14) is in case be admitted in the plasma arc, and the MIG arc between it and the workpiece promptly can ignite voluntarily; When adopting this striking mode, high-frequency discharge only takes place at an end of power supply, can not cause the danger of high frequency breakdown to power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88102665 CN1012044B (en) | 1988-05-12 | 1988-05-12 | Single-power plasma welding method with molten electrode protected by gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88102665 CN1012044B (en) | 1988-05-12 | 1988-05-12 | Single-power plasma welding method with molten electrode protected by gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1039202A true CN1039202A (en) | 1990-01-31 |
| CN1012044B CN1012044B (en) | 1991-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88102665 Expired CN1012044B (en) | 1988-05-12 | 1988-05-12 | Single-power plasma welding method with molten electrode protected by gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN1012044B (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053603C (en) * | 1996-12-17 | 2000-06-21 | 株式会社三社电机制作所 | Plasma arc utilizing apparatus |
| CN101530945A (en) * | 2008-03-06 | 2009-09-16 | 株式会社大亨 | Welding method of plasma pole noble gas protection |
| CN101767247A (en) * | 2008-12-26 | 2010-07-07 | 株式会社大亨 | Plasma gma welding method |
| CN101817112A (en) * | 2010-05-17 | 2010-09-01 | 哈尔滨工业大学 | Single power supply single-surface serial double-TIG (Tungsten Inert Gas) arc welding method |
| CN101837505A (en) * | 2009-03-11 | 2010-09-22 | 株式会社大亨 | Arc ending control method of double-electrode arc welding |
| CN101987391A (en) * | 2009-07-30 | 2011-03-23 | 日铁住金溶接工业株式会社 | Insert-chip, plasma torch and plasma processing device |
| CN102409337A (en) * | 2011-08-11 | 2012-04-11 | 哈尔滨工业大学 | Plasma cladding method and automatic cladding equipment for manufacturing wear resistant clad steel plate |
| CN102554424A (en) * | 2012-03-02 | 2012-07-11 | 北京工业大学 | High energy density cluster pulse arc welding gun |
| CN103111728A (en) * | 2013-02-05 | 2013-05-22 | 北京工业大学 | Separating type constrained electric arc welding method |
| CN103192185A (en) * | 2013-03-21 | 2013-07-10 | 杨迎元 | Composite welding method for overlap joint |
| CN104010757A (en) * | 2011-11-13 | 2014-08-27 | 维克托设备公司 | Alignment/Centering Device For Conductor Tube For Use In A GMAW Manual/Robotic Arc Welding MIG Gun |
| CN104801866A (en) * | 2015-04-24 | 2015-07-29 | 哈尔滨工业大学 | Plasma and gas metal arc welding composite welding device with simple structure |
| CN106270989A (en) * | 2016-09-23 | 2017-01-04 | 卓拓精密工具（苏州）有限公司 | A kind of metal cutting welding plasma arc device |
| CN106312264A (en) * | 2016-11-01 | 2017-01-11 | 辽宁石油化工大学 | Hybrid welding torch for pulse MIG (Metal-Inert Gas) welding and TIG (Tungsten Inert Gas) welding, and welding method of hybrid welding torch |
| CN107243688A (en) * | 2017-07-13 | 2017-10-13 | 艾洛益(杭州)材料科技有限公司 | A kind of pair of tungsten electrode arc couples TIG weldering devices |
| WO2018145543A1 (en) * | 2017-02-07 | 2018-08-16 | 王长春 | Dual heat source hybrid welding torch and welding method |
| CN108608126A (en) * | 2018-04-03 | 2018-10-02 | 哈尔滨工程大学 | Plasma shunts consumable electrode arc welding connection device and welding method |
| CN108817611A (en) * | 2018-06-29 | 2018-11-16 | 山东大学 | It is a kind of to force to restrain type electric arc metal increasing material manufacturing device |
-
1988
- 1988-05-12 CN CN 88102665 patent/CN1012044B/en not_active Expired
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053603C (en) * | 1996-12-17 | 2000-06-21 | 株式会社三社电机制作所 | Plasma arc utilizing apparatus |
| CN101530945A (en) * | 2008-03-06 | 2009-09-16 | 株式会社大亨 | Welding method of plasma pole noble gas protection |
| CN101767247B (en) * | 2008-12-26 | 2013-12-25 | 株式会社大亨 | Plasma GMA welding method |
| CN101767247A (en) * | 2008-12-26 | 2010-07-07 | 株式会社大亨 | Plasma gma welding method |
| CN101837505A (en) * | 2009-03-11 | 2010-09-22 | 株式会社大亨 | Arc ending control method of double-electrode arc welding |
| CN101837505B (en) * | 2009-03-11 | 2014-06-11 | 株式会社大亨 | Arc ending control method of double-electrode arc welding |
| CN101987391A (en) * | 2009-07-30 | 2011-03-23 | 日铁住金溶接工业株式会社 | Insert-chip, plasma torch and plasma processing device |
| CN101987391B (en) * | 2009-07-30 | 2016-10-05 | 日铁住金溶接工业株式会社 | Embedded chip, plasma-based torch and plasma-based processing unit (plant) |
| CN101817112A (en) * | 2010-05-17 | 2010-09-01 | 哈尔滨工业大学 | Single power supply single-surface serial double-TIG (Tungsten Inert Gas) arc welding method |
| CN102409337A (en) * | 2011-08-11 | 2012-04-11 | 哈尔滨工业大学 | Plasma cladding method and automatic cladding equipment for manufacturing wear resistant clad steel plate |
| CN102409337B (en) * | 2011-08-11 | 2014-05-07 | 哈尔滨工业大学 | Plasma cladding method and automatic cladding equipment for manufacturing wear resistant clad steel plate |
| US9545686B2 (en) | 2011-11-13 | 2017-01-17 | Victor Equipment Company | Centering device for conductor tube for GMAW manual/robotic arc welding MIG guns |
| CN104010757A (en) * | 2011-11-13 | 2014-08-27 | 维克托设备公司 | Alignment/Centering Device For Conductor Tube For Use In A GMAW Manual/Robotic Arc Welding MIG Gun |
| CN102554424B (en) * | 2012-03-02 | 2014-10-22 | 北京工业大学 | High energy density cluster pulse arc welding gun |
| CN102554424A (en) * | 2012-03-02 | 2012-07-11 | 北京工业大学 | High energy density cluster pulse arc welding gun |
| CN103111728A (en) * | 2013-02-05 | 2013-05-22 | 北京工业大学 | Separating type constrained electric arc welding method |
| CN103111728B (en) * | 2013-02-05 | 2015-12-09 | 北京工业大学 | Separate type constrained arc welding method |
| CN103192185A (en) * | 2013-03-21 | 2013-07-10 | 杨迎元 | Composite welding method for overlap joint |
| CN104801866A (en) * | 2015-04-24 | 2015-07-29 | 哈尔滨工业大学 | Plasma and gas metal arc welding composite welding device with simple structure |
| CN106270989A (en) * | 2016-09-23 | 2017-01-04 | 卓拓精密工具（苏州）有限公司 | A kind of metal cutting welding plasma arc device |
| CN106312264A (en) * | 2016-11-01 | 2017-01-11 | 辽宁石油化工大学 | Hybrid welding torch for pulse MIG (Metal-Inert Gas) welding and TIG (Tungsten Inert Gas) welding, and welding method of hybrid welding torch |
| CN106312264B (en) * | 2016-11-01 | 2019-09-20 | 辽宁石油化工大学 | The hybrid welding torch and its welding method of pulse MIC welding and TIG weldering |
| WO2018145543A1 (en) * | 2017-02-07 | 2018-08-16 | 王长春 | Dual heat source hybrid welding torch and welding method |
| CN107243688A (en) * | 2017-07-13 | 2017-10-13 | 艾洛益(杭州)材料科技有限公司 | A kind of pair of tungsten electrode arc couples TIG weldering devices |
| CN108608126A (en) * | 2018-04-03 | 2018-10-02 | 哈尔滨工程大学 | Plasma shunts consumable electrode arc welding connection device and welding method |
| CN108608126B (en) * | 2018-04-03 | 2021-01-05 | 哈尔滨工程大学 | Plasma shunting consumable electrode arc welding device and welding method |
| CN108817611A (en) * | 2018-06-29 | 2018-11-16 | 山东大学 | It is a kind of to force to restrain type electric arc metal increasing material manufacturing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1012044B (en) | 1991-03-20 |
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