CN102528246B - Three-wire welding process for vertical welding - Google Patents
Three-wire welding process for vertical welding Download PDFInfo
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- CN102528246B CN102528246B CN201210056755.4A CN201210056755A CN102528246B CN 102528246 B CN102528246 B CN 102528246B CN 201210056755 A CN201210056755 A CN 201210056755A CN 102528246 B CN102528246 B CN 102528246B
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Abstract
The invention discloses a three-wire welding system for vertical welding and a welding process of the three-wire welding system. A first welding gun provided with a first welding wire, a second welding gun provided with a second welding wire and a third welding gun provided with a third welding wire are arranged on a welding machine; the first welding gun and the third welding gun are symmetrically arranged on the two sides just below the first welding gun; each welding gun is provided with a welding gun posture adjusting device respectively; and each welding wire is provided with a wire conveying mechanism, a welding power supply and a protective gas device respectively. Through spatial arrangement of the three welding guns and welding parameter matching of the three welding wires, arc gas blowing force and protective gas blowing force produced by the second welding wire and the third welding wire produce upward and inward component forces to carry flowing molten metal, so that the control over the geometric size of a molten pool is realized, and the welding quality is guaranteed.
Description
Technical field
The present invention relates to solder technology, specifically, relate to a kind of three wire bond connection technologies that are directed to vertical position welding.
Background technology
Vertical position welding technology, especially slab vertical position welding operation are widely used in the assembling fields such as container ship design and construction, large-scale oil storage tank, last furnace shell.But deposite metal is subject to the gravity overflow that very easily drops in the molten drop that welding rod fusing forms when vertical position welding and molten bath, this just makes appearance of weld difficulty, and appearance of weld is also be not as attractive in appearance as downhand welding.
Multifibres congruent melting pond solder technology is because its high speed of welding, high deposition rate are widely used.Experimental study shows that the speed of Double Wire Welding and deposition rate are 3～4 times that monofilament welds, and three wire bonds are again the more than 4～5 times of monofilament weldering, especially, for cut deal welding, can mention largely welding efficiency.Meanwhile, the solder technology in multifibres congruent melting pond also has molten bath, molten bath bulk, be organized into the function of the controllability of grading.
Summary of the invention
When what the present invention will solve is vertical position welding, because welding rod fusing makes appearance of weld difficulty, the technical problem that quality of weld seam molding is on the low side, utilizes multifibres congruent melting pond solder technology efficiently and the feature controlled to molten bath, and a kind of three welding procedures for vertical position welding are provided.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
A kind of three welding procedures for vertical position welding, this welding procedure based on three wire bond welding systems comprise welding machine, the first welding gun that the first welding wire is set is installed on described welding machine, second welding gun and the 3rd welding gun that the 3rd welding wire is set of the second welding wire are set, described the second welding gun and described the 3rd welding gun are arranged on the both sides under described the first welding gun symmetrically, described the first welding gun, on described the second welding gun and described the 3rd welding gun, be respectively arranged with posture of welding torch adjusting device, described the first welding wire, on described the second welding wire and described the 3rd welding wire, is furnished with respectively wire feeder, the source of welding current and protective gas device,
Comprise the following steps:
(1) make described the first welding gun be positioned at front end along welding direction, make described the second welding gun and described the 3rd welding gun be positioned at rear end, utilize described posture of welding torch adjusting device to adjust respectively described the first welding gun, described the second welding gun and described the 3rd welding gun, making the first welding wire, described the second welding wire and described the 3rd welding wire distance between two tips is between any two 10～20mm;
(2) utilize described posture of welding torch adjusting device to adjust respectively the posture of welding torch of described the first welding gun, described the second welding gun and described the 3rd welding gun, making the angle between the first welding wire and the vertical line of plane to be welded is between 0 °～15 °, the angle of described the second welding wire and the 3rd welding wire and plane to be welded is between 45 °～75 °, and described the second welding wire and the angle of the 3rd welding wire respectively and between the vertical line of plane to be welded are between 15 °～25 °;
(3) start welding, adopt consumable electrode gas-arc method to carry out ground floor welding, the welding current of wherein said the first welding wire is 130～160A, weldingvoltage is 20～24V, speed of welding is 6～12cm/min, and gas flow is 40～45L/min, and the source of welding current is straight polarity direct current; The welding current of described the second welding wire and described the 3rd welding wire is 140～160A, and weldingvoltage is 20～24V, and speed of welding is 6～12cm/min, and gas flow is 45～50L/min, and the source of welding current is straight polarity direct current;
(4), after ground floor has welded, utilize described posture of welding torch adjusting device to adjust respectively described the second welding wire and the angle of the 3rd welding wire respectively and between the vertical line of plane to be welded is between 25 °～45 °;
(5) adopt consumable electrode gas-arc method to carry out second layer welding, the welding current of wherein said the first welding wire is 180～220A, and weldingvoltage is 24～28V, and speed of welding is 16～22cm/min, gas flow is 55～65L/min, and the source of welding current is straight polarity direct current; The welding current of described the second welding wire and described the 3rd welding wire is 200～240A, and weldingvoltage is 24～28V, and speed of welding is 16～22cm/min, and gas flow is 60～75L/min, and the source of welding current is straight polarity direct current.
Wherein, described posture of welding torch adjusting device comprises transverse adjustment device, vertical adjusting apparatus, longitudinal adjusting device and angular adjustment apparatus.
The invention has the beneficial effects as follows:
The present invention is by the spatial arrangement of three welding guns; and the welding parameter of three welding wires coupling; the arcing gas that the second welding wire and the 3rd welding wire are produced blows power and the protective gas power of blowing and produces upwards and inside component; hold the deposite metal of trickling; thereby realize the control to molten bath physical dimension, ensured welding quality.
Brief description of the drawings
Fig. 1 is the structural representation of the three wire bond welding systems for vertical position welding provided by the present invention;
Fig. 2 is that three wire bonds for vertical position welding provided by the present invention connect process schematic representation;
Fig. 3 is the side view of Fig. 2;
Fig. 4 is the front view of Fig. 2.
In figure: 11, the first welding wire, 12, the first welding gun, 21, the second welding wire, 22, the second welding gun, 31, the 3rd welding wire, 32, the 3rd welding gun, 4: posture of welding torch adjusting device, 5: wire feeder, 6: the source of welding current, 7, workpiece to be welded.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail:
As shown in Figure 1, the present embodiment has disclosed a kind of three wire bond welding systems for vertical position welding, three welding guns are installed on welding machine, are referred to as the first welding gun 12, the second welding gun 22 and the 3rd welding gun 32, the first welding wire 11, the second welding wire 21 and the 3rd welding wire 31 are set respectively on it.The second welding gun 22 and the 3rd welding gun 32 lay respectively at the both sides under the first welding gun 12, and the second welding gun 22 and the 3rd welding gun 32 are with respect to the installation site symmetry of the first welding gun 12.
On the first welding gun 12, the second welding gun 22 and the 3rd welding gun 32, be respectively arranged with posture of welding torch adjusting device 4.Wherein, posture of welding torch adjusting device 4 specifically comprises transverse adjustment device, vertical adjusting apparatus, longitudinal adjusting device and angular adjustment apparatus.Transverse adjustment device, vertical adjusting apparatus, longitudinal adjusting device and angular adjustment apparatus are all adjusting devices general on existing welding equipment.
On the first welding wire 11, the second welding wire 21 and the 3rd welding wire 31, be furnished with respectively wire feeder, the source of welding current and protective gas device.
As shown in Figures 2 to 4; the present embodiment has disclosed a kind of three welding procedures for vertical position welding simultaneously; this welding procedure adopts three consumable electrode gas protection welding methods, and welding sequence is two-layer twice weldering, and welding material adopts welding wire or the welding rod with welding work pieces yield strength ad eundem.
Before welding, be conscientiously familiar with construction drawing and technique, detect groove size and assembly precision and whether meet respective quality standard-required, treat welding zone territory and carry out oil removing, slagging-off, foreign material cleaning, avoid the impact of impurity welding quality.
Embodiment 1
This welding procedure is directed to the welding work pieces of thickness 25mm especially, and adopts the welding of one side double V-groove, and butting grooves angle is 60 ° ± 5 °.
Make the first welding gun 12 be positioned at front end along welding direction, make the second welding gun 22 and the 3rd welding gun 32 be positioned at rear end, when welding direction is upward welding in the vertical position, the position of the first welding gun 12 is upper, the position of the second welding gun 22 and the 3rd welding gun 32 under.When vertical position welding, the first welding wire 11 plays Main Function in the process of fusing workpiece formation welding pool, and the second welding wire 21 and the 3rd welding wire 31 play the effect that regulates molten bath physical dimension, holds the motlten metal that is subject to Action of Gravity Field and trickle downwards.
Before welding, adjust respectively the welding posture of three welding guns, utilizing lateral adjustment device, vertical adjustment device and longitudinal adjustment apparatus to adjust respectively the first welding wire 11, the second welding wire 21 and the 3rd welding wire 31 distance between two tips is between any two 10mm, so that the spacing between the first welding wire 11, the second welding wire 21 and the 3rd welding wire 31 is controlled in the scope that produces a welding pool.
Utilize posture of welding torch adjusting device to adjust respectively the posture of welding torch of the first welding gun 12, the second welding gun 22 and the 3rd welding gun 32, angle between the first welding wire 11 and the vertical line of plane to be welded is γ, the second welding wire 21 and the 3rd welding wire 31 are β with the angle of plane to be welded, the second welding wire 21 and the angle α of the 3rd welding wire 31 respectively and between the vertical line of plane to be welded.Making angle γ is 0 °, and making angle α is 45 °, and the protective gas power of blowing that the arcing gas that guarantee the second welding wire 21 and the 3rd welding wire 31 produce blows power and each electric arc produces component upwards to molten bath, holds the metal of trickling; Making angle β is between 15 °, ensures that the arcing gas power of blowing that the second welding wire 21 and the 3rd welding wire 31 produce produces inside component to molten bath, controls molten bath physical dimension.
Carry out ground floor welding, wherein the welding current of the first welding wire 11 is 130～135A, and weldingvoltage is 20～21V, and speed of welding is 6～8cm/min, and gas flow is 40～45L/min, and the source of welding current is straight polarity direct current; The welding current of the second welding wire 21 and the 3rd welding wire 31 is 140～145A, and weldingvoltage is 20～21V, and speed of welding is 6～8cm/min, and gas flow is 45～50L/min, and the source of welding current is straight polarity direct current.
After ground floor has welded, utilize angular adjustment apparatus to adjust respectively the second welding wire 21 and the angle of the 3rd welding wire 31 respectively and between the vertical line of plane to be welded is 25 °;
Carry out second layer welding, wherein the welding current of the first welding wire 11 is 180～185A, and weldingvoltage is 24～25V, and speed of welding is 16～18cm/min, is gas flow 55～60L/min, and the source of welding current is straight polarity direct current; The welding current of the second welding wire 21 and the 3rd welding wire 31 is 200～210A, and weldingvoltage is 24～25V, and speed of welding is 16～18cm/min, and gas flow is 60～65L/min, and the source of welding current is straight polarity direct current.
Embodiment 2
This welding procedure is directed to the welding work pieces of thickness 30mm especially, and adopts the welding of one side double V-groove, and butting grooves angle is 60 ° ± 5 °.
Make the first welding gun 12 be positioned at front end along welding direction, make the second welding gun 22 and the 3rd welding gun 32 be positioned at rear end, when welding direction is upward welding in the vertical position, the position of the first welding gun 12 is upper, the position of the second welding gun 22 and the 3rd welding gun 32 under.When vertical position welding, the first welding wire 11 plays Main Function in the process of fusing workpiece formation welding pool, and the second welding wire 21 and the 3rd welding wire 31 play the effect that regulates molten bath physical dimension, holds the motlten metal that is subject to Action of Gravity Field and trickle downwards.
Before welding, adjust respectively the welding posture of three welding guns, utilizing lateral adjustment device, vertical adjustment device and longitudinal adjustment apparatus to adjust respectively the first welding wire 11, the second welding wire 21 and the 3rd welding wire 31 distance between two tips is between any two 15mm, so that the spacing between the first welding wire 11, the second welding wire 21 and the 3rd welding wire 31 is controlled in the scope that produces a welding pool.
Utilize posture of welding torch adjusting device to adjust respectively the posture of welding torch of the first welding gun 12, the second welding gun 22 and the 3rd welding gun 32, angle between the first welding wire 11 and the vertical line of plane to be welded is γ, the second welding wire 21 and the 3rd welding wire 31 are β with the angle of plane to be welded, the second welding wire 21 and the angle α of the 3rd welding wire 31 respectively and between the vertical line of plane to be welded.Making angle γ is 8 °, and making angle α is 60 °, and the protective gas power of blowing that the arcing gas that guarantee the second welding wire 21 and the 3rd welding wire 31 produce blows power and each electric arc produces component upwards to molten bath, holds the metal of trickling; Making angle β is between 20 °, ensures that the arcing gas power of blowing that the second welding wire 21 and the 3rd welding wire 31 produce produces inside component to molten bath, controls molten bath physical dimension.
Carry out ground floor welding, wherein the welding current of the first welding wire 11 is 140～145A, and weldingvoltage is 21～22V, and speed of welding is 8～10cm/min, and gas flow is 40～45L/min, and the source of welding current is straight polarity direct current; The welding current of the second welding wire 21 and the 3rd welding wire 31 is 145～150A, and weldingvoltage is 21～22V, and speed of welding is 8～10cm/min, and gas flow is 45～50L/min, and the source of welding current is straight polarity direct current.
After ground floor has welded, utilize angular adjustment apparatus to adjust respectively the second welding wire 21 and the angle of the 3rd welding wire 31 respectively and between the vertical line of plane to be welded is 40 °;
Carry out second layer welding, wherein the welding current of the first welding wire 11 is 190～200A, and weldingvoltage is 25～26V, and speed of welding is 18～20cm/min, is gas flow 55～60L/min, and the source of welding current is straight polarity direct current; The welding current of the second welding wire 21 and the 3rd welding wire 31 is 210～220A, and weldingvoltage is 25～26V, and speed of welding is 18～20cm/min, and gas flow is 65～70L/min, and the source of welding current is straight polarity direct current.
Embodiment 3
This welding procedure is directed to the welding work pieces of thickness 40mm especially, and adopts the welding of one side double V-groove, and butting grooves angle is 60 ° ± 5 °.
Make the first welding gun 12 be positioned at front end along welding direction, make the second welding gun 22 and the 3rd welding gun 32 be positioned at rear end, when welding direction is upward welding in the vertical position, the position of the first welding gun 12 is upper, the position of the second welding gun 22 and the 3rd welding gun 32 under.When vertical position welding, the first welding wire 11 plays Main Function in the process of fusing workpiece formation welding pool, and the second welding wire 21 and the 3rd welding wire 31 play the effect that regulates molten bath physical dimension, holds the motlten metal that is subject to Action of Gravity Field and trickle downwards.
Before welding, adjust respectively the welding posture of three welding guns, utilizing lateral adjustment device, vertical adjustment device and longitudinal adjustment apparatus to adjust respectively the first welding wire 11, the second welding wire 21 and the 3rd welding wire 31 distance between two tips is between any two 20mm, so that the spacing between the first welding wire 11, the second welding wire 21 and the 3rd welding wire 31 is controlled in the scope that produces a welding pool.
Utilize posture of welding torch adjusting device to adjust respectively the posture of welding torch of the first welding gun 12, the second welding gun 22 and the 3rd welding gun 32, angle between the first welding wire 11 and the vertical line of plane to be welded is γ, the second welding wire 21 and the 3rd welding wire 31 are β with the angle of plane to be welded, the second welding wire 21 and the angle α of the 3rd welding wire 31 respectively and between the vertical line of plane to be welded.Making angle γ is 15 °, and making angle α is 75 °, and the protective gas power of blowing that the arcing gas that guarantee the second welding wire 21 and the 3rd welding wire 31 produce blows power and each electric arc produces component upwards to molten bath, holds the metal of trickling; Making angle β is 25 °, ensures that the arcing gas power of blowing that the second welding wire 21 and the 3rd welding wire 31 produce produces inside component to molten bath, controls molten bath physical dimension.
Carry out ground floor welding, wherein the welding current of the first welding wire 11 is 150～160A, and weldingvoltage is 22～24V, and speed of welding is 10～12cm/min, and gas flow is 40～45L/min, and the source of welding current is straight polarity direct current; The welding current of the second welding wire 21 and the 3rd welding wire 31 is 155～160A, and weldingvoltage is 22～24V, and speed of welding is 10～12cm/min, and gas flow is 45～50L/min, and the source of welding current is straight polarity direct current.
After ground floor has welded, utilize angular adjustment apparatus to adjust respectively the second welding wire 21 and the angle of the 3rd welding wire 31 respectively and between the vertical line of plane to be welded is 45 °;
Carry out second layer welding, wherein the welding current of the first welding wire 11 is 210～220A, and weldingvoltage is 26～28V, and speed of welding is 20～22cm/min, is gas flow 60～65L/min, and the source of welding current is straight polarity direct current; The welding current of the second welding wire 21 and the 3rd welding wire 31 is 220～240A, and weldingvoltage is 26～28V, and speed of welding is 20～22cm/min, and gas flow is 65～75L/min, and the source of welding current is straight polarity direct current.
After having welded, clear up and detect, specifically comprise: 1. postwelding is carefully removed weld seam welding slag and splash; 2. postwelding carries out Non-Destructive Testing according to relevant criterion butt welded seam; 3. the weld seam that need reprocess for defectiveness, repairs according to actual conditions, carries out Non-Destructive Testing after reparation again; 4. weldquality should meet the requirement of relevant acceptance criteria.
Although by reference to the accompanying drawings the preferred embodiments of the present invention are described above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, within these all belong to protection scope of the present invention.
Claims (2)
1. three welding procedures for vertical position welding, this welding procedure based on three wire bond welding systems comprise welding machine, the first welding gun that the first welding wire is set is installed on described welding machine, second welding gun and the 3rd welding gun that the 3rd welding wire is set of the second welding wire are set, described the second welding gun and described the 3rd welding gun are arranged on the both sides under described the first welding gun symmetrically, described the first welding gun, on described the second welding gun and described the 3rd welding gun, be respectively arranged with posture of welding torch adjusting device, described the first welding wire, on described the second welding wire and described the 3rd welding wire, is furnished with respectively wire feeder, the source of welding current and protective gas device,
It is characterized in that, comprise the following steps:
(1) make described the first welding gun be positioned at front end along welding direction, make described the second welding gun and described the 3rd welding gun be positioned at rear end, utilize described posture of welding torch adjusting device to adjust respectively described the first welding gun, described the second welding gun and described the 3rd welding gun, making the first welding wire, described the second welding wire and described the 3rd welding wire distance between two tips is between any two 10～20mm;
(2) utilize described posture of welding torch adjusting device to adjust respectively the posture of welding torch of described the first welding gun, described the second welding gun and described the 3rd welding gun, making the angle between the first welding wire and the vertical line of plane to be welded is between 0 °～15 °, the angle of described the second welding wire and the 3rd welding wire and plane to be welded is between 45 °～75 °, and described the second welding wire and the angle of the 3rd welding wire respectively and between the vertical line of plane to be welded are between 15 °～25 °;
(3) start welding, adopt consumable electrode gas-arc method to carry out ground floor welding, the welding current of wherein said the first welding wire is 130～160A, weldingvoltage is 20～24V, speed of welding is 6～12cm/min, and gas flow is 40～45L/min, and the source of welding current is straight polarity direct current; The welding current of described the second welding wire and described the 3rd welding wire is 140～160A, and weldingvoltage is 20～24V, and speed of welding is 6～12cm/min, and gas flow is 45～50L/min, and the source of welding current is straight polarity direct current;
(4), after ground floor has welded, utilize described posture of welding torch adjusting device to adjust respectively described the second welding wire and the angle of the 3rd welding wire respectively and between the vertical line of plane to be welded is between 25 °～45 °;
(5) adopt consumable electrode gas-arc method to carry out second layer welding, the welding current of wherein said the first welding wire is 180～220A, and weldingvoltage is 24～28V, and speed of welding is 16～22cm/min, gas flow is 55～65L/min, and the source of welding current is straight polarity direct current; The welding current of described the second welding wire and described the 3rd welding wire is 200～240A, and weldingvoltage is 24～28V, and speed of welding is 16～22cm/min, and gas flow is 60～75L/min, and the source of welding current is straight polarity direct current.
2. a kind of three welding procedures for vertical position welding according to claim 1, is characterized in that, described posture of welding torch adjusting device comprises transverse adjustment device, vertical adjusting apparatus, longitudinal adjusting device and angular adjustment apparatus.
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| CN201210056755.4A CN102528246B (en) | 2012-03-07 | 2012-03-07 | Three-wire welding process for vertical welding |
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| CN201210056755.4A CN102528246B (en) | 2012-03-07 | 2012-03-07 | Three-wire welding process for vertical welding |
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| 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 |
| CN104625361B (en) * | 2015-01-23 | 2017-10-31 | 天津大学 | Twin arc and the three wire bond rifles and welding system and method for cold silk pulse composite welding |
| JP2017196653A (en) * | 2016-04-28 | 2017-11-02 | 株式会社神戸製鋼所 | Gas shield arc welding system and gas shield arc welding method |
| CN108838490A (en) * | 2018-07-19 | 2018-11-20 | 南昌航空大学 | A kind of arcing device for the control of underwater transverse weld appearance of weld |
| CN112139629A (en) * | 2020-09-23 | 2020-12-29 | 天津七所高科技有限公司 | High-frequency pulse three-wire indirect electric arc welding method and device |
| CN112570856B (en) * | 2020-12-09 | 2022-07-01 | 中国石油天然气集团有限公司 | Cold and hot welding wire matching welding device and system for oil gas conveying steel pipe |
| CN113263282B (en) * | 2021-05-19 | 2022-10-25 | 烟台大学 | All-position suspension-condensing type vertical welding device between gapless materials |
| CN113732446B (en) * | 2021-08-25 | 2023-03-10 | 中国船舶重工集团公司第七二五研究所 | Bypass coupling three-wire indirect electric arc welding method with controllable electric arc space structure |
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| JPS62197279A (en) * | 1986-02-20 | 1987-08-31 | Mitsubishi Heavy Ind Ltd | Consumable electrode type arc welding method |
| JP4749555B2 (en) * | 2001-01-19 | 2011-08-17 | 株式会社ダイヘン | Three-electrode arc welding control method |
| CN101134260A (en) * | 2007-10-25 | 2008-03-05 | 上海交通大学 | Three-filum open arc welding method |
| CN201275660Y (en) * | 2008-09-25 | 2009-07-22 | 藏伟 | Gas protecting electric welding machine |
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