CN105290569A - Welding process for composite pipeline - Google Patents
Welding process for composite pipeline Download PDFInfo
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- CN105290569A CN105290569A CN201410357884.6A CN201410357884A CN105290569A CN 105290569 A CN105290569 A CN 105290569A CN 201410357884 A CN201410357884 A CN 201410357884A CN 105290569 A CN105290569 A CN 105290569A
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- welding
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Abstract
The invention relates to a welding process for a composite pipeline. The welding process comprises the following steps that 1, a groove is machined, the groove is machined for a 20R+316L composite pipe according to a preset angle, groove machining is stopped when the balance of the base pipe wall thickness of the 20R+316L composite pipe is 1 mm-2 mm, the base pipe balance is ground off through an angle grinder, the truncated edge of a liner pipe of the 20R+316L composite pipe is reserved, machined burr is removed; and 2, the groove is welded, according to the welding sequence, the composite face of the groove is sealing-welded first, then backing weld is conducted, i.e. a coating is welded, afterwards transition welding is conducted, i.e. a transition layer is welded, after that, filling welding is conducted, and finally cosmetic welding is conducted. According to the welding process, the welding requirement according with the 20R+316L composite pipe is met, and the welding efficiency and the first-pass yield of the pipeline are improved. The deficiency that the prior welding process does not accord with the welding requirement for the 20R+316L composite pipe is overcome.
Description
Technical field
The present invention relates to a kind of compound pipeline complex pipeline welding procedure.
Background technology
Existing welding procedure all makes for clad steel plate, and such as: when mother metal is 316L+20R, basic unit adopts welding rod to be J427, transition zone adopts welding rod to be A042, and cladding adopts welding rod to be A022.When mother metal is 316L+16MnR, basic unit adopts welding rod to be J507, and transition zone adopts welding rod to be A042, and cladding adopts welding rod to be A022.When mother metal is 0Cr13+20R, basic unit adopts welding rod to be J427, and transition zone adopts welding rod to be A302, and cladding adopts welding rod to be A302.And present welding material is 20R+316L compound pipeline complex pipeline, so existing welding procedure has been not suitable for the welding of compound pipeline complex pipeline.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of compound pipeline complex pipeline welding procedure, and this technique achieves and meets 20R+316L multiple tube pipeline welding requirement, improves pipeline welding efficiency and first-time qualification rate.Overcome the deficiency that existing welding procedure does not meet 20R+316L multiple tube pipeline welding requirement.
The technical solution used in the present invention is: a kind of compound pipeline complex pipeline welding procedure, and this processing step is as follows:
One, retaining wall on slope: by 20R+316L multiple tube according to formulation angle finished edge, the base tube wall thickness allowances of 20R+316L multiple tube at 1-2mm time stop retaining wall on slope, with angle grinding machine, base tube surplus is ground off, reserve the bushing pipe root face of 20R+316L multiple tube, remove machined burrs;
Two, bevel for welding: welding sequence is first to the composite surface soldering and sealing of groove, then backing welding and weld overlay, then
Transition weldering and welding transition layer, then fill weldering, last cosmetic welding; Soldering and sealing, backing welding adopt manual argon arc welding, and transition is welded, filled out
Fill weldering, cosmetic welding adopts semiautomatic welding.
Soldering and sealing adopts the ER309LMO welding wire of Ф 1.2mm.
Backing welding adopts the TGF316L welding wire of Ф 2.5mm.
Transition weldering adopts the ER309L welding wire of Ф 2.0mm.
Cosmetic welding adopts the JM-68 welding wire of Ф 1.2mm.
The invention has the beneficial effects as follows: the present invention, owing to have employed as above retaining wall on slope method and welding method, thus has the effect meeting 20R+316L multiple tube pipeline welding requirement, improve pipeline welding efficiency and first-time qualification rate.
detailed description of the invention:
A kind of compound pipeline complex pipeline welding procedure, this processing step is as follows:
One, retaining wall on slope: by 20R+316L multiple tube according to formulation angle finished edge, the base tube wall thickness allowances of 20R+316L multiple tube at 1-2mm time stop retaining wall on slope, with angle grinding machine, base tube surplus is ground off, reserve the bushing pipe root face of 20R+316L multiple tube, remove machined burrs;
Two, bevel for welding: welding sequence is first to the composite surface soldering and sealing of groove, then backing welding and weld overlay, then
Transition weldering and welding transition layer, then fill weldering, last cosmetic welding; Soldering and sealing, backing welding adopt manual argon arc welding, and transition is welded, filled out
Fill weldering, cosmetic welding adopts semiautomatic welding.
Soldering and sealing adopts the ER309LMO welding wire of Ф 1.2mm.
Backing welding adopts the TGF316L welding wire of Ф 2.5mm.
Transition weldering adopts the ER309L welding wire of Ф 2.0mm.
Cosmetic welding adopts the JM-68 welding wire of Ф 1.2mm.
Welding condition of the present invention is as shown in the table:
Be understandable that, above about specific descriptions of the present invention, the technical scheme described by the embodiment of the present invention is only not limited to for illustration of the present invention, those of ordinary skill in the art is to be understood that, still can modify to the present invention or equivalent replacement, to reach identical technique effect; Needs are used, all within protection scope of the present invention as long as meet.
Claims (5)
1. a compound pipeline complex pipeline welding procedure, is characterized in that: this processing step is as follows:
One, retaining wall on slope: by 20R+316L multiple tube according to formulation angle finished edge, the base tube wall thickness allowances of 20R+316L multiple tube at 1-2mm time stop retaining wall on slope, with angle grinding machine, base tube surplus is ground off, reserve the bushing pipe root face of 20R+316L multiple tube, remove machined burrs;
Two, bevel for welding: welding sequence is first to the composite surface soldering and sealing of groove, then backing welding and weld overlay, and then transition weldering and welding transition layer, then fill weldering, 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 compound pipeline complex pipeline welding procedure according to claim 1, it is characterized in that: described soldering and sealing adopts the ER309LMO welding wire of Ф 1.2mm.
3. according to compound pipeline complex pipeline welding procedure according to claim 1, it is characterized in that: described backing welding adopts the TGF316L welding wire of Ф 2.5mm.
4. according to compound pipeline complex pipeline welding procedure according to claim 1, it is characterized in that: described transition weldering adopts the ER309L welding wire of Ф 2.0mm.
5. according to compound pipeline complex pipeline welding procedure according to claim 1, it is characterized in that: described cosmetic welding adopts the JM-68 welding wire of Ф 1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410357884.6A CN105290569A (en) | 2014-07-25 | 2014-07-25 | Welding process for composite pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410357884.6A CN105290569A (en) | 2014-07-25 | 2014-07-25 | Welding process for composite pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105290569A true CN105290569A (en) | 2016-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410357884.6A Pending CN105290569A (en) | 2014-07-25 | 2014-07-25 | Welding process for composite pipeline |
Country Status (1)
| Country | Link |
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| CN (1) | CN105290569A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107081509A (en) * | 2017-03-30 | 2017-08-22 | 成都振中电气有限公司 | Pipeline welding process |
-
2014
- 2014-07-25 CN CN201410357884.6A patent/CN105290569A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107081509A (en) * | 2017-03-30 | 2017-08-22 | 成都振中电气有限公司 | Pipeline welding process |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160203 |
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| WD01 | Invention patent application deemed withdrawn after publication |