CN104942414A - Double-metal composite plate submerged arc welding technology - Google Patents
Double-metal composite plate submerged arc welding technology Download PDFInfo
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- CN104942414A CN104942414A CN201510331702.2A CN201510331702A CN104942414A CN 104942414 A CN104942414 A CN 104942414A CN 201510331702 A CN201510331702 A CN 201510331702A CN 104942414 A CN104942414 A CN 104942414A
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- welding
- arc
- submerged
- matrix
- double
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Classifications
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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
- B23K9/18—Submerged-arc welding
- B23K9/186—Submerged-arc welding making use of a consumable electrodes
- B23K9/188—Submerged-arc welding making use of a consumable electrodes making use of several electrodes
-
- 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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
- B23K35/383—Selection of media, e.g. special atmospheres for surrounding the working area mainly containing noble gases or nitrogen
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
Abstract
The invention provides a double-metal composite plate submerged arc welding technology. The technology comprises the steps of firstly, previous preparing which comprises a double-metal composite plate and welding materials; secondly, parameter setting which comprises the welding groove size and the welding condition; thirdly, welding manner which comprises the steps that after pre-welding is protected by a substrate mixing with a mixed gas Ar+CO2, three-pass submerged arc welding is carried out, and after substrate welding is completed, one pass double-wire submerged arc welding is adopted by a coating layer. According to the technology, the investment for transformation equipment can be lowered, and alternating producing of an ordinary pipeline steel pipe and a stainless steel double-metal composite steel pipe can be improved.
Description
Technical field
The present invention relates to metal solder field, be related specifically to a kind of ply-metal submerged welding process.
Background technology
At present, the exploitation oil gas pipeline along with acid-soluble oil gas field is faced with more and more harsher corrosive environment, and a lot of pipe-line causes inefficacy due to seriously corroded, even can set off an explosion, and threaten personal safety, contaminated environment, consequence is very serious.Develop rapidly along with steel pipe is manufacturing, rustless steel double-metal composite steel tube has the mechanical property such as high strength, high tenacity of carbon steel because of it, has again stainless corrosion resistance advantage, therefore obtains extensive utilization.But, because two kinds of materials of rustless steel double-metal composite steel tube have different chemical composition and physical property, the dilution causing fusion area Carbon diffusion and alloying element is easy in welding process, property of welded joint is caused to worsen, affect welding quality, this makes the welding of rustless steel double-metal composite steel tube compare monolayer carbon steel or stainless steel steel-pipe welding and becomes complicated, produces add difficulty to rustless steel double-metal composite steel tube.The Macrodilution of alloying element that coating and basal body interface place occur in stainless steel composite pipe welding process and the migration etc. of carbon, common method is after matrix or coating welding, carry out transition zone at coating with basal body interface place again to weld, then weld overlay or matrix.
The patent No. is that CN103978280A name is called in the patent document of " a kind of stainless steel composite pipe qualification of welding procedure method ", and the practice of described soldering stainless steel dual-metal clad steel pipe adopts argon arc welding welding transition layer, then adopts mist Ar+CO
2(mixed ratio 4:1) protection welding matrix weld seam packed layer and capping layer, finally adopt pure argon protection weld overlay packed layer and capping layer, adopts this welding procedure must produce equipment to existing straight-line joint submerged arc welding tube and transformed and can implement.
The patent No. is that CN103358036A name is called in the patent document of " a kind of stainless steel composite pipe welding procedure "; the practice of described soldering stainless steel dual-metal clad steel pipe is gas shielded weld overlay; then adopt Manual arc welding to connect transition zone, then adopt submerged welding process to weld matrix.Because manual electric arc welding welding welding efficiency is low, be not suitable for producing application in enormous quantities at straight-line joint submerged arc welding tube.Adopt gas shielded weld overlay must produce equipment to existing straight-line joint submerged arc welding tube to be transformed and can implement simultaneously.
The patent No. is that CN1354061A name is called in the patent document of " stainless steel composite pipe welding method ", the practice of described soldering stainless steel dual-metal clad steel pipe adopts argon arc welding soldering stainless steel coating, then adopt Manual arc welding to connect transition zone, then adopt manual electric arc welding to weld matrix.Because manual electric arc welding welding welding efficiency is low, be not suitable for producing application in enormous quantities at straight-line joint submerged arc welding tube.Adopt argon arc welding weld overlay must produce equipment to existing straight-line joint submerged arc welding tube to be transformed and can implement simultaneously.
Baoji Steel tube Co., Ltd finishes the article display of ancestor high mountain at " the acid medium heavy caliber 2205/ Q235 two-phase stainless steel pipe " delivered of 2010 " welded tube " the 5th phase, and the welding of rustless steel double-metal composite steel tube adopts argon arc welding weld overlay, adopts CO
2protection weldering welding matrix.Adopt this welding procedure must produce equipment to existing straight-line joint submerged arc welding tube to be transformed and can implement.
Sichuan Petroleum Administration's pipeline welding technique center Yang Xu is in the article display of " Incoloy 825 alloy+X65 composite tube welding and the welding procedure " delivered of 2008 " welded tube " the 5th phase, and the welding of rustless steel double-metal composite steel tube adopts argon arc welding weld overlay and matrix.Adopt this welding procedure must produce equipment to existing straight-line joint submerged arc welding tube to be transformed and can implement.
Construction Company of PetroChina Company Limited. second period-luminosity river is in 2015 " welding " the article display of " 15CrMoR (H)+SUS321 stainless composite plate welding " delivered of the 3rd phase, and rustless steel double-metal composite plate adopts manual electric arc welding welding coating and matrix.Because manual electric arc welding welding welding efficiency is low, be not suitable for producing application in enormous quantities at straight-line joint submerged arc welding tube.Above-mentioned rustless steel double-metal composite steel tube welding procedure and current longitudinal submerged arc welded pipe manufacture used and are not suitable with, even if carry out the frock that corresponding equipment renovation also exists when common pipeline steel tube and rustless steel double-metal composite steel tube are alternately produced to change problem.
Summary of the invention
The object of the present invention is to provide a kind of ply-metal submerged welding process adopting existing straight-line joint submerged arc welding tube production equipment to carry out the welding of rustless steel double-metal composite steel tube.
For achieving the above object, technical scheme of the present invention is:
A kind of ply-metal submerged welding process, is characterized in that: the step of described technique is as follows:
1, early-stage preparations: (1), bi-metal composite panel: matrix steel specs: L415Q, thickness 15mm, coating stainless steel specification 316L, thickness 3mm;
(2), welding material: matrix prewelding selects Φ 3mmCHW50C8 welding wire, and Φ 4mmH08C welding wire and SJ101G solder flux are selected in matrix submerged-arc welding, and Φ 4mmER309MoL welding wire and CHF601 solder flux are selected in coating submerged-arc welding;
2, optimum configurations: (1), bevel for welding size: the ply-metal internal groove degree of depth is 2.0 ± 0.5mm, bevel angle 45 ± 2 °, the outer groove depth 12 ± 0.5mm of ply-metal, bevel angle 30 ± 2 °, root face size 4 ± 0.5mm;
(2), welding conditions: matrix prewelding mist Ar+CO
2mixed ratio 4:1, welding current 700 ± 50A, arc voltage 22 ± 2V, speed of welding 3.0 ± 0.1m/min, matrix submerged-arc welding first passage adopts double wire hidden arc welding, a welding current 700 ± 50A, arc voltage 35 ± 2V, two welding current 550 ± 50A, arc voltage 38 ± 2V, speed of welding 1.4 ± 0.1m/min; Second and third passage of matrix submerged-arc welding all adopts three submerged-arc weldings, a welding current 700 ± 50A, arc voltage 35 ± 2V, two welding current 550 ± 50A, arc voltage 38 ± 2V, three welding current 500 ± 50A, arc voltage 40 ± 2V, speed of welding 1.4 ± 0.1m/min, coating submerged-arc welding adopts a time double wire hidden arc welding, a welding current 700 ± 50A, arc voltage 35 ± 2V, two welding current 550 ± 50A, arc voltage 38 ± 2V, speed of welding 1.4 ± 0.1m/min;
3, welding manner: matrix adopts mist Ar+CO
2protect pre-postwelding, then carry out 3 passage submerged-arc weldings, after matrix has welded, coating adopts a time double wire hidden arc welding to connect.
Good effect of the present invention is:
1, when not transforming existing straight-line joint submerged arc welding tube production equipment, rustless steel double-metal composite steel tube is welded;
2, this technique can reduce the input of reforming equipment, can improve again alternately producing of common pipeline steel tube and rustless steel double-metal composite steel tube;
3, this technological operation is simple, production efficiency is high.
Detailed description of the invention
The specific embodiment of the present invention is further illustrated below in conjunction with embodiment.
Embodiment
Ply-metal submerged welding process carries out as follows:
One, early-stage preparations
1, bi-metal composite panel: select model to be L415Q, the steel of thickness 15mm are as matrix, and select model to be specification 316L, thickness 3mm stainless steel is coating;
2, welding wire and solder flux: matrix prewelding selects Φ 3mmCHW50C8 welding wire, Φ 4mmH08C welding wire and SJ101G solder flux are selected in matrix submerged-arc welding, and Φ 4mmER309MoL welding wire and CHF601 solder flux are selected in coating submerged-arc welding;
Two, welding manner
1, matrix prewelding:
(1), matrix prewelding: when matrix carries out prewelding, the mist Ar+CO selected
2middle mixed ratio is 4:1, and the flow of mist is 60L/min, rated current 700A during matrix prewelding, allow domain of walker to be positive and negative 50A, specified arc voltage 22V, allow domain of walker to be positive and negative 2V, the speed of welding of matrix is 3.0m/min, allows domain of walker to be positive and negative 0.1 m/min.
(2), matrix submerged-arc welding: matrix submerged-arc welding will carry out 3 passage submerged-arc weldings altogether, first passage adopts double wire hidden arc welding, one wire bond meets rated current 700A, domain of walker is allowed to be positive and negative 50A, specified arc voltage 35V, domain of walker is allowed to be positive and negative 2V, a speed of welding is 1.4m/min, domain of walker is allowed to be positive and negative 0.1 m/min, second, three passage submerged arc weldings adopt three submerged arc weldings, it is 700A that one wire bond connects rated current, domain of walker is allowed to be positive and negative 50A, specified arc voltage 35V, domain of walker is allowed to be positive and negative 2V, it is 550A that two wire bonds connect rated current, domain of walker is allowed to be positive and negative 50A, specified arc voltage is 38V, domain of walker is allowed to be positive and negative 2V, it is 550A that three wire bonds connect rated current, domain of walker is allowed to be positive and negative 50A, specified arc voltage 40V, domain of walker is allowed to be positive and negative 2V, second, the speed of welding of three passage submerged-arc weldings is 1.4m/min, the scope of floating is allowed to be positive and negative 0.1 m/min,
2, coating welding: coating welding adopts a time double wire hidden arc welding to connect, one wire bond meets rated current 700A, allow domain of walker to be positive and negative 50A, specified arc voltage 35V, allow domain of walker to be positive and negative 2V, it is 550A that two wire bonds connect rated current, allow domain of walker to be positive and negative 50A, specified arc voltage is 38V, allows domain of walker to be positive and negative 2V, coating speed of welding is 1.4m/min, allows scope of activities to be positive and negative 0.1 m/min.
Three, quality requirement
Rustless steel double-metal composite plate L415Q/316L(15mm+3mm) after every welding completes, its property of welded joint meets in API 5LD and covers or the requirement of lining corrosion resisting alloy composite steel tube specification technique.
The above is only non-limiting embodiment of the present invention; for the person of ordinary skill of the art; do not departing from the invention design with under the prerequisite of not making creative work, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (1)
1. a ply-metal submerged welding process, is characterized in that: the step of described technique is as follows:
(1), early-stage preparations: 1. bi-metal composite panel: matrix steel specs: L415Q, thickness 15mm, coating stainless steel specification 316L, thickness 3mm;
2. welding material: matrix prewelding selects Φ 3mmCHW50C8 welding wire, Φ 4mmH08C welding wire and SJ101G solder flux are selected in matrix submerged-arc welding, and Φ 4mmER309MoL welding wire and CHF601 solder flux are selected in coating submerged-arc welding;
(2), optimum configurations: 1. bevel for welding size: the ply-metal internal groove degree of depth is 2.0 ± 0.5mm, bevel angle 45 ± 2 °, the outer groove depth 12 ± 0.5mm of ply-metal, bevel angle 30 ± 2 °, root face size 4 ± 0.5mm;
2. welding conditions: matrix prewelding mist Ar+CO
2mixed ratio 4:1, welding current 700 ± 50A, arc voltage 22 ± 2V, speed of welding 3.0 ± 0.1m/min, matrix submerged-arc welding first passage adopts double wire hidden arc welding, a welding current 700 ± 50A, arc voltage 35 ± 2V, two welding current 550 ± 50A, arc voltage 38 ± 2V, speed of welding 1.4 ± 0.1m/min; Second and third passage of matrix submerged-arc welding all adopts three submerged-arc weldings, a welding current 700 ± 50A, arc voltage 35 ± 2V, two welding current 550 ± 50A, arc voltage 38 ± 2V, three welding current 500 ± 50A, arc voltage 40 ± 2V, speed of welding 1.4 ± 0.1m/min, coating submerged-arc welding adopts a time double wire hidden arc welding, a welding current 700 ± 50A, arc voltage 35 ± 2V, two welding current 550 ± 50A, arc voltage 38 ± 2V, speed of welding 1.4 ± 0.1m/min;
(3) welding manner: matrix adopts mist Ar+CO
2protect pre-postwelding, then carry out 3 passage submerged-arc weldings, after matrix has welded, coating adopts a time double wire hidden arc welding to connect.
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| CN201510331702.2A CN104942414B (en) | 2015-06-16 | 2015-06-16 | A kind of ply-metal submerged welding process |
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| CN201510331702.2A CN104942414B (en) | 2015-06-16 | 2015-06-16 | A kind of ply-metal submerged welding process |
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| CN104942414A true CN104942414A (en) | 2015-09-30 |
| CN104942414B CN104942414B (en) | 2017-03-01 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105171208A (en) * | 2015-10-22 | 2015-12-23 | 中国石油集团渤海石油装备制造有限公司 | Prewelding method of thin-wall longitudinal submerged-arc welded (LSAW) pipes with small bore diameter |
| CN106695079A (en) * | 2017-03-06 | 2017-05-24 | 中国石油大学(华东) | Welding method of double-metal composite pipe |
| CN107442957A (en) * | 2017-07-26 | 2017-12-08 | 南通苏通人防防护设备有限公司 | A kind of ply-metal welding technique |
| CN111745269A (en) * | 2020-07-10 | 2020-10-09 | 首钢集团有限公司 | Double-sided submerged arc welding method for stainless steel composite plate |
| CN113770662A (en) * | 2021-10-16 | 2021-12-10 | 博众不锈钢有限公司 | Method for manufacturing small-caliber bimetal composite welded steel pipe |
| CN113909648A (en) * | 2021-10-09 | 2022-01-11 | 中石化石油机械股份有限公司沙市钢管分公司 | Welding method of straight-seam bimetal composite pipe |
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| JPH08309527A (en) * | 1995-05-22 | 1996-11-26 | Nkk Corp | Production of clad welded steel pipe |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105171208A (en) * | 2015-10-22 | 2015-12-23 | 中国石油集团渤海石油装备制造有限公司 | Prewelding method of thin-wall longitudinal submerged-arc welded (LSAW) pipes with small bore diameter |
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| CN106695079B (en) * | 2017-03-06 | 2019-07-23 | 中国石油大学(华东) | The welding method of composite bimetal pipe |
| CN107442957A (en) * | 2017-07-26 | 2017-12-08 | 南通苏通人防防护设备有限公司 | A kind of ply-metal welding technique |
| CN111745269A (en) * | 2020-07-10 | 2020-10-09 | 首钢集团有限公司 | Double-sided submerged arc welding method for stainless steel composite plate |
| CN113909648A (en) * | 2021-10-09 | 2022-01-11 | 中石化石油机械股份有限公司沙市钢管分公司 | Welding method of straight-seam bimetal composite pipe |
| CN113770662A (en) * | 2021-10-16 | 2021-12-10 | 博众不锈钢有限公司 | Method for manufacturing small-caliber bimetal composite welded steel pipe |
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| CN104942414B (en) | 2017-03-01 |
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Address after: 434000 Jingzhou, Hubei, Sha District, Beijing East Road, No. 2 Patentee after: SHASHI STEEL PIPE BRANCH OF SINOPEC PETROLEUM MACHINERY CO.,LTD. Address before: 434000 Jingzhou, Hubei, Sha District, Beijing East Road, No. 2 Patentee before: SHASHI STEEL PIPE FACTORY, SINOPEC PETROLEUM ENGINEERING MACHINERY CO.,LTD. |
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Effective date of registration: 20170926 Address after: 434000 Jingzhou, Hubei, Sha District, Beijing East Road, No. 2 Co-patentee after: SINOPEC OILFIELD EQUIPMENT Corp. Patentee after: SHASHI STEEL PIPE BRANCH OF SINOPEC PETROLEUM MACHINERY CO.,LTD. Address before: 434000 Jingzhou, Hubei, Sha District, Beijing East Road, No. 2 Patentee before: SHASHI STEEL PIPE BRANCH OF SINOPEC PETROLEUM MACHINERY CO.,LTD. |
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