CN102794541A - Welding process of composite pipeline - Google Patents
Welding process of composite pipeline Download PDFInfo
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- CN102794541A CN102794541A CN2012103102667A CN201210310266A CN102794541A CN 102794541 A CN102794541 A CN 102794541A CN 2012103102667 A CN2012103102667 A CN 2012103102667A CN 201210310266 A CN201210310266 A CN 201210310266A CN 102794541 A CN102794541 A CN 102794541A
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Abstract
The invention relates to the technical field of natural gas pipelines, and in particular relates to a welding process of a composite pipeline. The welding process comprises the following steps of: (1) groove processing: processing a groove on an L485MB+316L composite pipe according to the preset angle, stopping groove processing when the allowance of the wall thickness of the base pipe of the L485MB+316L composite pipe is in 1-2mm, grinding off the allowance of the base pipe by using an angle grinder, leaving the blunt edge of the lining pipe of the L485MB+316L composite pipe and removing processed burrs; and (2) groove welding: according to the welding sequence, carrying out sealed welding on the composite surface of the groove, then carrying out back welding, i.e., welding a coating layer, next, carrying out transitional welding, i.e., welding a transitional layer, then carrying out fill welding, and finally carrying out cosmetic welding. The welding process has the advantages that the pipeline welding requirement conforming to the L485MB+316L composite pipe is realized, the pipeline welding efficiency and the one-time qualification rate are increased, and the defect that the existing welding process does not conform to the pipeline welding requirement of the L485MB+316L composite pipe is overcome.
Description
Technical field:
The present invention relates to a kind of natural gas line technical field, particularly a kind of compound pipeline complex pipeline welding procedure.
Background technology:
Existing welding procedure all is to make to clad steel plate, for example:
Basic unit's employing welding rod is J427 when mother metal is 316L+20R, and it is A042 that transition zone adopts welding rod, and a multiple layer employing welding rod is A022.
Basic unit's employing welding rod is J507 when mother metal is 316L+16MnR, and it is A042 that transition zone adopts welding rod, and a multiple layer employing welding rod is A022.
Basic unit's employing welding rod is J427 when mother metal is 0Cr13+20R, and it is A302 that transition zone adopts welding rod, and a multiple layer employing welding rod is A302.
And present welding material is the L485MB+316L compound pipeline complex pipeline, and so existing welding procedure has been not suitable for the welding of compound pipeline complex pipeline.
Summary of the invention:
The technical problem that the present invention will solve provides a kind of compound pipeline complex pipeline welding procedure, and this technology has realized meeting L485MB+316L multiple tube pipeline welding requirement, improves pipeline welding efficient and first-time qualification rate.Overcome the deficiency that existing welding procedure does not meet L485MB+316L multiple tube pipeline welding requirement.
The technical scheme that the present invention taked is: a kind of compound pipeline complex pipeline welding procedure, and this processing step is following:
One, groove processing: with the L485MB+316L multiple tube according to formulating the angle finished edge; Stop groove processing during at 1-2mm in the parent tube wall thickness surplus of L485MB+316L multiple tube; With the angle grinding machine parent tube surplus is ground off, reserve the bushing pipe root face of L485MB+316L multiple tube, remove machined burrs;
Two, bevel for welding: welding sequence is the composite surface soldering and sealing of elder generation to groove, and backing welding is a weld overlay then, and then the transition weldering is the welding transition layer, fills weldering then, at last cosmetic welding; Soldering and sealing, backing welding adopt manual argon arc welding, and transition weldering, filling weldering, cosmetic welding adopt semiautomatic welding.
The ER309LMO welding wire of Ф 1.2mm is adopted in soldering and sealing.
Backing welding adopts the TGF316L welding wire of Ф 2.5mm.
The ER309L welding wire of Ф 2.0mm is adopted in the transition weldering.
Cosmetic welding adopts the JM-68 welding wire of Ф 1.2mm.
The invention has the beneficial effects as follows: the present invention has been owing to adopted as above groove processing method and welding method, thereby has the effect that meets L485MB+316L multiple tube pipeline welding requirement, improves pipeline welding efficient and first-time qualification rate.
The specific embodiment:
A kind of compound pipeline complex pipeline welding procedure, this processing step is following:
One, groove processing: with the L485MB+316L multiple tube according to formulating the angle finished edge; Stop groove processing during at 1-2mm in the parent tube wall thickness surplus of L485MB+316L multiple tube; With the angle grinding machine parent tube surplus is ground off, reserve the bushing pipe root face of L485MB+316L multiple tube, remove machined burrs;
Two, bevel for welding: welding sequence is the composite surface soldering and sealing of elder generation to groove, and backing welding is a weld overlay then, and then the transition weldering is the welding transition layer, fills weldering then, at last cosmetic welding; Soldering and sealing, backing welding adopt manual argon arc welding, and transition weldering, filling weldering, cosmetic welding adopt semiautomatic welding.
The ER309LMO welding wire of Ф 1.2mm is adopted in soldering and sealing.
Backing welding adopts the TGF316L welding wire of Ф 2.5mm.
The ER309L welding wire of Ф 2.0mm is adopted in the transition weldering.
Cosmetic welding adopts the JM-68 welding wire of Ф 1.2mm.
Welding condition of the present invention is as shown in the table:
It is understandable that; More than about specific descriptions of the present invention; Only be used to the present invention is described and be not to be subject to the described technical scheme of the embodiment of the invention; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention, to reach identical technique effect; As long as satisfy the use needs, all within protection scope of the present invention.
Claims (5)
1. compound pipeline complex pipeline welding procedure, it is characterized in that: this processing step is following:
One, groove processing: with the L485MB+316L multiple tube according to formulating the angle finished edge; Stop groove processing during at 1-2mm in the parent tube wall thickness surplus of L485MB+316L multiple tube; With the angle grinding machine parent tube surplus is ground off, reserve the bushing pipe root face of L485MB+316L multiple tube, remove machined burrs;
Two, bevel for welding: welding sequence is the composite surface soldering and sealing of elder generation to groove, and backing welding is a weld overlay then, and then the transition weldering is the welding transition layer, fills weldering then, at last cosmetic welding; Soldering and sealing, backing welding adopt manual argon arc welding, and transition weldering, filling weldering, cosmetic welding adopt semiautomatic welding.
2. according to the described compound pipeline complex pipeline welding procedure of claim 1, it is characterized in that: the ER309LMO welding wire of Ф 1.2mm is adopted in said soldering and sealing.
3. according to the described compound pipeline complex pipeline welding procedure of claim 1, it is characterized in that: said backing welding adopts the TGF316L welding wire of Ф 2.5mm.
4. according to the described compound pipeline complex pipeline welding procedure of claim 1, it is characterized in that: the ER309L welding wire of Ф 2.0mm is adopted in said transition weldering.
5. according to the described compound pipeline complex pipeline welding procedure of claim 1, it is characterized in that: said cosmetic welding adopts the JM-68 welding wire of Ф 1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103102667A CN102794541A (en) | 2012-08-28 | 2012-08-28 | Welding process of composite pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103102667A CN102794541A (en) | 2012-08-28 | 2012-08-28 | Welding process of composite pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102794541A true CN102794541A (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103102667A Pending CN102794541A (en) | 2012-08-28 | 2012-08-28 | Welding process of composite pipeline |
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| CN (1) | CN102794541A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331327A (en) * | 2013-05-27 | 2013-10-02 | 中国石油天然气集团公司 | Bimetal composite pipe girth welding method |
| CN103586566A (en) * | 2013-10-23 | 2014-02-19 | 中国石油天然气集团公司 | Semi-automatic argon-arc welding method for bimetal composite pipes |
| CN103612003A (en) * | 2013-11-30 | 2014-03-05 | 西安向阳航天材料股份有限公司 | Full-automatic butt welding technology of bi-metal composite tubes |
| CN103639572A (en) * | 2013-11-21 | 2014-03-19 | 内蒙古伊泰煤制油有限责任公司 | Compound pipeline weld joint repair method for media rich in hydrogen |
| CN104708223A (en) * | 2015-03-13 | 2015-06-17 | 西安向阳航天材料股份有限公司 | Method for connecting composite tubes with same external diameter and different wall thicknesses |
| CN105108284A (en) * | 2015-08-10 | 2015-12-02 | 安徽富煌钢构股份有限公司 | Composite board welding method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005028405A (en) * | 2003-07-14 | 2005-02-03 | Ishikawajima Harima Heavy Ind Co Ltd | Pipe welding method, and structure of welded part |
| CN2887513Y (en) * | 2006-01-10 | 2007-04-11 | 四川石油管理局 | Mechanical composite pipeline welding chamfer |
| CN101543928A (en) * | 2009-05-11 | 2009-09-30 | 辽河石油勘探局 | Compound pipeline welding process |
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2012
- 2012-08-28 CN CN2012103102667A patent/CN102794541A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005028405A (en) * | 2003-07-14 | 2005-02-03 | Ishikawajima Harima Heavy Ind Co Ltd | Pipe welding method, and structure of welded part |
| CN2887513Y (en) * | 2006-01-10 | 2007-04-11 | 四川石油管理局 | Mechanical composite pipeline welding chamfer |
| CN101543928A (en) * | 2009-05-11 | 2009-09-30 | 辽河石油勘探局 | Compound pipeline welding process |
Non-Patent Citations (2)
| Title |
|---|
| 张殿杰等: "L485MB+316L大管径复合管焊接工艺研究", 《中小企业管理与科技》 * |
| 田彩刚: "L245/316L双金属复合管焊接技术", 《石油工程建设》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331327A (en) * | 2013-05-27 | 2013-10-02 | 中国石油天然气集团公司 | Bimetal composite pipe girth welding method |
| CN103331327B (en) * | 2013-05-27 | 2016-05-11 | 中国石油天然气集团公司 | A kind of composite bimetal pipe welding method of girth weld |
| CN103586566A (en) * | 2013-10-23 | 2014-02-19 | 中国石油天然气集团公司 | Semi-automatic argon-arc welding method for bimetal composite pipes |
| CN103586566B (en) * | 2013-10-23 | 2015-11-18 | 中国石油天然气集团公司 | The semi-automatic argon arc welding method of composite bimetal pipe |
| CN103639572A (en) * | 2013-11-21 | 2014-03-19 | 内蒙古伊泰煤制油有限责任公司 | Compound pipeline weld joint repair method for media rich in hydrogen |
| CN103639572B (en) * | 2013-11-21 | 2015-06-03 | 内蒙古伊泰煤制油有限责任公司 | Compound pipeline weld joint repair method for media rich in hydrogen |
| CN103612003A (en) * | 2013-11-30 | 2014-03-05 | 西安向阳航天材料股份有限公司 | Full-automatic butt welding technology of bi-metal composite tubes |
| CN104708223A (en) * | 2015-03-13 | 2015-06-17 | 西安向阳航天材料股份有限公司 | Method for connecting composite tubes with same external diameter and different wall thicknesses |
| CN105108284A (en) * | 2015-08-10 | 2015-12-02 | 安徽富煌钢构股份有限公司 | Composite board welding method |
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Application publication date: 20121128 |