CN103521899A - Welding method for manufacturing composite pipe through composite plate - Google Patents

Welding method for manufacturing composite pipe through composite plate Download PDF

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Publication number
CN103521899A
CN103521899A CN201310500429.2A CN201310500429A CN103521899A CN 103521899 A CN103521899 A CN 103521899A CN 201310500429 A CN201310500429 A CN 201310500429A CN 103521899 A CN103521899 A CN 103521899A
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Prior art keywords
welding
composite
stainless steel
plate
tube
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CN201310500429.2A
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Chinese (zh)
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CN103521899B (en
Inventor
吕世雄
姜丽丽
李充
徐永强
王龙江
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Liaoning Blue New Material Co., Ltd.
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Harbin Institute of Technology
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/16Arc welding or cutting making use of shielding gas
    • B23K9/167Arc welding or cutting making use of shielding gas and of a non-consumable electrode
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K33/00Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • B23K33/004Filling of continuous seams
    • B23K33/008Filling of continuous seams for automotive applications
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/02Seam welding; Backing means; Inserts
    • B23K9/025Seam welding; Backing means; Inserts for rectilinear seams
    • B23K9/0253Seam welding; Backing means; Inserts for rectilinear seams for the longitudinal seam of tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/04Welding for other purposes than joining, e.g. built-up welding
    • B23K9/044Built-up welding on three-dimensional surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/16Arc welding or cutting making use of shielding gas
    • B23K9/173Arc welding or cutting making use of shielding gas and of a consumable electrode
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/235Preliminary treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/04Tubular or hollow articles
    • B23K2101/06Tubes

Abstract

The invention provides a welding method for manufacturing a composite pipe through a composite plate, and corrosion resistance of the inner wall of the composite pipe is beneficially ensured. The welding method is characterized in that semi-U-shaped grooves with the certain size are machined in the end portions of the two ends of a stainless steel layer of the composite plate, stainless steel materials are surfaced on the grooves, V-shaped grooves with truncated edges are machined in the end portions of the two ends of a carbon steel layer of the surfaced composite plate, the two ends of the composite plate are then curled up and connected in a butt joint mode, layered welding is conducted after point fixing positioning is conducted, argon tungsten-arc welding is selected as backing welding, gas metal arc welding is selected as filling and cosmetic welding, stainless steel welding wires are selected as filling materials of backing welding, and carbon steel welding wires can be selected as filling materials of filling and cosmetic welding. According to the welding method for manufacturing the composite pipe through the composite plate, it can be ensured that the stainless steel layer of the composite pipe is not stained, and the welding method has the advantages of being easy to operate and reliable in performance and is suitable for practical engineering application in the field of oil and gas transmission, chemical engineering and the like.

Description

A kind of welding method of being prepared multiple tube by composite plate
Technical field
The present invention relates to welding field, be specifically related to a kind of welding method of being prepared multiple tube by composite plate.
Background technology
Along with exploitation of oil-gas field popularization, it is more complicated that the exploitation of oil gas field and transport condition become, the CO containing in oil gas field 2, H 2the corrosive mediums such as S make traditional single aseptic technic and material can not meet the development need of oil gas field.
At present, the composite bimetal pipe of carbon steel inner liner stainless steel is with its good corrosion resistance, and good mechanical performance and relatively low cost, progressively promoted the use of in oil gas field field.Abroad, U.S.'s Gulf of Mexico Fairway Field multiple tube is employed already, and in the oil gas fields such as Russia, multiple tube also has application.Domestic, multiple tube starts application on Tarim Oilfield branch company tooth is breathed out oil field surface gathering and transferring pipe; On long celebrating oil field and Daqing oil field waterflood-transmission line, all there is application.
The method of manufacturing multiple tube mainly contains: multiple tube is produced in drawing, and multiple tube is produced in centrifugal casting, and centrifugal aluminothermy technology is produced multiple tube, and multiple tube is produced in explosive forming, and multiple tube etc. is produced in welding.Drawing composite algorithm is that two kinds of different metal pipe boxes are fitted together, then drawing in mould, and the method forms by plastic deformation mechanical bond, and bond strength is low, and can not produce continuously, and production efficiency is lower.Multiple tube is produced in centrifugal casting and centrifugal aluminothermy technology is produced multiple tube, and higher to equipment requirement, cost is higher.
Domestic butt welding is delivered a child, and to produce the development technique starting of composite bimetal pipe more late, in the process of using, often there will be weld defect, as weld crack, is easily corroded etc. after lack of penetration and welding, and wherein the postwelding problem that is easily corroded is comparatively serious.Because basic unit's carbon steel and inner liner stainless steel layer chemical composition differ greatly, when composite board welding is connected into multiple tube, the carbon in carbon steel layer spreads in stainless steel layer, and stainless steel layer is polluted, reduce stainless steel corrosion resistance, thereby reduced the serviceability of multiple tube.Therefore, how to reduce in welding process medium carbon steel layer carbon and become to diffusion in stainless steel layer the key issue of preparing multiple tube.
Summary of the invention
The object of the present invention is to provide a kind of solder technology of being prepared multiple tube by composite plate, this technology can reduce carbon in carbon steel layer in welding process to the diffusion of stainless steel layer, to improve the corrosion resistance of multiple tube, technique is simple, practical.
For achieving the above object, the present invention realizes by following step:
(1), built-up welding step: process length is the half U-shaped groove (3) that a, radius are r in inner liner stainless steel layer (2) end, two ends of composite plate, make radius r be greater than the thickness t of stainless steel layer, built-up welding stainless steel (4) on groove, overlaying method adopts argon tungsten-arc welding, the thickness of overlay cladding should be greater than radius r, to guarantee that half U-shaped groove (3) is filled;
(2), mechanical processing steps: the band root face V-type butting grooves (5) that adopts machining mode that the two ends end face of composite plate is processed into.
(3), butt welding step: docking is rolled in the composite plate two ends that process; along groove, carry out a fixed bit; solder joint number depends on the length of the multiple tube of preparation; during bottoming first by root face through welding; fill again and cover welding; backing welding is selected argon tungsten-arc welding, for raising the efficiency, is filling and selecting during cosmetic welding welding.
The present invention also has following feature:
1, the length a=4-7mm of half U-shaped groove in described step (), half U-shaped groove radius r=5-8mm, the thickness t=1.2-4mm of composite plate stainless steel layer.
2, the root face length of the double V-groove in described step (two) is 1.5-2.5mm.
3, the packing material in described step (three) is selected and stainless steel material identical in step ().
4, apply cooling provision in described step (three) during argon tungsten-arc welding.
5, the weld deposit process welding parameter in described step () is: adopt direct current 140~200A, speed of welding 2.1~2.7mm/s, wire feed rate 1.1~1.7mm/s, gas flow 8~12L/min; Butt-welding process parameter in step (three) is identical with the weld deposit process welding parameter in step ().
The principle that the present invention improves multiple tube corrosion resistance is, in the stainless steel inner lining layer end of composite plate, process and there is certain size half U-shaped groove, and on groove built-up welding stainless steel material, the Thickness Ratio composite plate stainless steel layer thickness t of overlay cladding is large, double V-groove is processed into in the composite plate carbon steel layer end of heap postwelding, during butt welding, because the stainless steel of built-up welding is kept apart composite plate carbon steel layer and stainless steel layer, and composite plate stainless steel layer is far away apart from welding high-temperature region, thereby the carbon reducing in carbon steel layer spreads to stainless steel layer in welding process, reduced carbon to stainless pollution, guarantee the corrosion resistance of inner liner stainless steel layer.
Invention effect
Advantage of the present invention is:
(1), on composite board end part groove built-up welding stainless steel, the stainless steel of built-up welding is separated composite plate carbon steel layer and stainless steel layer, the carbon that has intercepted carbon steel layer spreads to stainless steel layer, has reduced the pollution of carbon to stainless steel layer, has improved the corrosion resistance of multiple tube.
(2), the stainless steel layer thickness of built-up welding is greater than the thickness of composite plate stainless steel layer, while so also having reduced in welding process location, composite plate both sides, aligns more difficult problem, reduced welding difficulty, and welding operation is easily carried out.
(3), overlay cladding is reserved with enough length, guaranteed that the end of composite plate is away from welding high-temperature region, the carbon that can further reduce carbon steel layer spreads to stainless steel layer.
(4) composite plate, after built-up welding stainless steel is because stainless steel layer is thicker, the weld seam amount of staying in the time of can reducing argon tungsten-arc welding.
(5), the composite plate connection of preparing multiple tube belongs to metallurgical binding, reliability is higher.
Accompanying drawing explanation
Fig. 1 composite board end part processing half U type groove schematic diagram.
Fig. 2 groove built-up welding stainless steel schematic diagram.
The docking double V-groove schematic diagram of Fig. 3 composite plate two ends machining band root face.
The flange welding of Fig. 4 composite plate is connected into multiple tube schematic diagram.
In figure 1, the carbon steel layer of composite plate, 2, the inner liner stainless steel layer of composite plate, 3, half U-shaped groove, 4, stainless steel weld overlays, 5, with the double V-groove of root face, 6, butt weld.
The specific embodiment
Embodiment 1
The object of the present invention is to provide a kind of welding method of being prepared multiple tube by composite plate, its concrete implementation step is:
(1), built-up welding step: in the end, two ends of the inner liner stainless steel layer (2) of composite plate, processing length a is 4mm, the half U-shaped groove (3) that radius r is 5mm, the thickness t that makes r be greater than stainless steel layer is 1.2mm.Built-up welding stainless steel (4) on groove, overlaying method adopts argon tungsten-arc welding, and the thickness of overlay cladding should be greater than the degree of depth r of groove, to guarantee that groove (3) is filled.Welding parameter: adopt direct current 140A, speed of welding 2.1mm/s, wire feed rate 1.1mm/s, gas flow 8/min.
(2), mechanical processing steps: adopt the mode of machining the two ends end face of composite plate to be processed into the double V-groove with root face (5) of docking, root face length is 1.5mm.
(3), butt welding step: docking is rolled in the two ends of the composite plate processing, carry out a fixed bit along groove, solder joint number depends on the length of multiple tube.During backing welding, first by root face through welding, then fill and cover welding, backing welding is selected argon tungsten-arc welding, during bottoming, is guaranteeing on the basis of through welding, and the welding parameter of selection of small, to guarantee lower sweating heat energy input.For raising the efficiency filling and selecting welding during cosmetic welding, at the initial stage of filling, select less welding parameter as far as possible.Butt-welding process parameter is identical with the weld deposit process welding parameter in step ().
Embodiment 2
The object of the present invention is to provide a kind of welding method of being prepared multiple tube by composite plate, its concrete implementation step is:
(1), built-up welding step: in the end, two ends of the inner liner stainless steel layer (2) of composite plate, processing length a is 7mm, the half U-shaped groove (3) that radius r is 8mm, the thickness t that makes the radius r of half U-shaped groove be greater than stainless steel layer is 4mm.At the enterprising windrow weldering of groove stainless steel (4), overlaying method adopts argon tungsten-arc welding, and the thickness of overlay cladding should be greater than the degree of depth r of groove, to guarantee that groove (3) is filled.Welding parameter is: adopt direct current 200A, speed of welding 2.7mm/s, wire feed rate 1.7mm/s, gas flow 12L/min.
(2), mechanical processing steps: adopt the mode of machining that the two ends end face of composite plate is processed into the docking double V-groove (5) with root face, root face length is 2.5mm.
(3), butt welding step: the two ends edge flare by the composite plate processing, along groove, carry out a fixed bit, solder joint number depends on the length of multiple tube.During bottoming, first by root face through welding, then fill and cover welding, backing weld method is selected argon tungsten-arc welding, during bottoming, is guaranteeing on the basis of through welding, and the welding parameter of selection of small, to guarantee lower sweating heat energy input.For raising the efficiency filling and selecting welding during cosmetic welding, at the initial stage of filling, select less welding parameter as far as possible.Butt-welding process parameter is identical with the weld deposit process welding parameter in step ().

Claims (6)

1. by composite plate, prepared a welding method for multiple tube, comprise built-up welding step, mechanical processing steps and butt welding step, it is characterized in that, concrete steps are as follows:
(1), built-up welding step: process length is the half U-shaped groove (3) that a, radius are r in inner liner stainless steel layer (2) end, two ends of composite plate, make radius r be greater than the thickness t of stainless steel layer, built-up welding stainless steel (4) on groove, overlaying method adopts argon tungsten-arc welding, the thickness of overlay cladding should be greater than radius r, to guarantee that half U-shaped groove (3) is filled;
(2), mechanical processing steps: the band root face V-type butting grooves (5) that adopts machining mode that the two ends end face of composite plate is processed into.
(3), butt welding step: docking is rolled in the composite plate two ends that process; along groove, carry out a fixed bit; solder joint number depends on the length of the multiple tube of preparation; during bottoming first by root face through welding; fill again and cover welding; backing welding is selected argon tungsten-arc welding, for raising the efficiency, is filling and selecting during cosmetic welding welding.
2. a kind of welding method of being prepared multiple tube by composite plate according to claim 1, it is characterized in that: the length a=4-7mm of half U-shaped groove in described step (), half U-shaped groove radius r=5-8mm, the thickness t=1.2-4mm of composite plate stainless steel layer.
3. a kind of welding method of being prepared multiple tube by composite plate according to claim 1, is characterized in that: the root face length of the double V-groove in described step (two) is 1.5-2.5mm.
4. a kind of welding method of being prepared multiple tube by composite plate according to claim 1, is characterized in that: the packing material in described step (three) is selected and stainless steel material identical in step ().
5. a kind of welding method of being prepared multiple tube by composite plate according to claim 1, is characterized in that: during the middle argon tungsten-arc welding of described step (three), apply cooling provision.
6. a kind of welding method of being prepared multiple tube by composite plate according to claim 1, it is characterized in that: the weld deposit process welding parameter in described step () is: adopt direct current 140~200A, speed of welding 2.1~2.7mm/s, wire feed rate 1.1~1.7mm/s, gas flow 8~12L/min; Butt-welding process parameter in step (three) is identical with the weld deposit process welding parameter in step ().
CN201310500429.2A 2013-10-09 2013-10-09 A kind of welding method being prepared multiple tube by composite plate Active CN103521899B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104014997A (en) * 2014-06-11 2014-09-03 河北钢铁股份有限公司 Manufacturing method for stainless steel composite boards
CN104625557A (en) * 2015-01-19 2015-05-20 江苏久日数控机床有限公司 Method for repairing fractured track rolling bearing of numerical control gate type pipe making machine
CN105127562A (en) * 2015-09-30 2015-12-09 青岛兰石重型机械设备有限公司 Method for welding dissimilar material welded joint of composite plate
CN105772904A (en) * 2016-05-14 2016-07-20 山西阳煤化工机械(集团)有限公司 Butt welding method of small-diameter composite pipes
CN106583951A (en) * 2016-12-06 2017-04-26 中石化中原油建工程有限公司 Large aperture thick wall nickel alloy composite tube butt welding process
CN108340129A (en) * 2018-03-13 2018-07-31 太原科技大学 A kind of preparation method of the stainless steel and carbon steel composite tube on the deposited side of easy welding
CN109483009A (en) * 2018-10-31 2019-03-19 中国石油天然气集团有限公司 A kind of manufacturing method of composite bimetal pipe end portion treatment structure

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CN101100013A (en) * 2007-07-04 2008-01-09 中国石油天然气集团公司 Thin-wall stainless steel double-layer and carbon steel base layer composite tube girth weld welding method
CN101362249A (en) * 2008-09-12 2009-02-11 西安向阳航天材料股份有限公司 Girth welding method of duplex stainless steel bimetal composite pipe
CN101633074A (en) * 2009-07-16 2010-01-27 西安交通大学 Welding method of girth weld of inner cladding thin-walled stainless steel composite tube
CN101653855A (en) * 2009-08-12 2010-02-24 西安向阳航天材料股份有限公司 Method for welding composited tube at bonding interface of carbon steel/stainless steel machinery

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US4162758A (en) * 1976-07-26 1979-07-31 Asahi Kasei Kogyo Kabushiki-Kaisha Method for producing clad steel pipes
CN1354061A (en) * 2000-11-22 2002-06-19 中国建筑第八工程局工业设备安装公司一公司 Stainless steel composite pipe welding method
CN1546267A (en) * 2003-12-08 2004-11-17 西安交通大学 Welding method for ultra-thin composite layer low-carbon steel - austenitic stainless steel multiple tube adaptor
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104014997A (en) * 2014-06-11 2014-09-03 河北钢铁股份有限公司 Manufacturing method for stainless steel composite boards
CN104625557A (en) * 2015-01-19 2015-05-20 江苏久日数控机床有限公司 Method for repairing fractured track rolling bearing of numerical control gate type pipe making machine
CN104625557B (en) * 2015-01-19 2018-03-20 江苏久日数控机床有限公司 The restorative procedure of numerical controlled gantry type tuber roller bearing fracture
CN105127562A (en) * 2015-09-30 2015-12-09 青岛兰石重型机械设备有限公司 Method for welding dissimilar material welded joint of composite plate
CN105127562B (en) * 2015-09-30 2017-04-12 青岛兰石重型机械设备有限公司 Method for welding welded joint between stainless steel composite plate and austenitic stainless steel
CN105772904A (en) * 2016-05-14 2016-07-20 山西阳煤化工机械(集团)有限公司 Butt welding method of small-diameter composite pipes
CN105772904B (en) * 2016-05-14 2018-05-04 山西阳煤化工机械(集团)有限公司 A kind of minor diameter multiple tube butt welding method
CN106583951A (en) * 2016-12-06 2017-04-26 中石化中原油建工程有限公司 Large aperture thick wall nickel alloy composite tube butt welding process
CN108340129A (en) * 2018-03-13 2018-07-31 太原科技大学 A kind of preparation method of the stainless steel and carbon steel composite tube on the deposited side of easy welding
CN109483009A (en) * 2018-10-31 2019-03-19 中国石油天然气集团有限公司 A kind of manufacturing method of composite bimetal pipe end portion treatment structure
CN109483009B (en) * 2018-10-31 2021-04-30 中国石油天然气集团有限公司 Manufacturing method of end processing structure of bimetal composite pipe

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Effective date of registration: 20170418

Address after: 112601 Tieling City, Liaoning province Tieling County Industrial Park Yi Road Park South Ring Road No. third

Patentee after: Liaoning Blue New Material Co., Ltd.

Address before: 150001 School of materials science and engineering,, Harbin, Nangang, China, Harbin Institute of Technology,

Patentee before: Harbin Institute of Technology