CN106670670A - Stainless steel-carbon steel composite tube annular sealing welding method - Google Patents
Stainless steel-carbon steel composite tube annular sealing welding method Download PDFInfo
- Publication number
- CN106670670A CN106670670A CN201611054396.3A CN201611054396A CN106670670A CN 106670670 A CN106670670 A CN 106670670A CN 201611054396 A CN201611054396 A CN 201611054396A CN 106670670 A CN106670670 A CN 106670670A
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- China
- Prior art keywords
- welding
- stainless steel
- welded
- multiple tube
- carbon steel
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Classifications
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
- B23K31/027—Making tubes with soldering or welding
-
- 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
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
-
- 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
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a stainless steel-carbon steel composite tube annular sealing welding method. The stainless steel-carbon steel composite tube annular sealing welding method comprises the following steps: forming openings at the welding end parts of two composite tubes to be welded according to a conventional method; placing half of an annular gasket in a welding end part of a first composite tube to be welded; fixing the edge of the annular gasket to the inner wall of the first composite tube to be welded in a spot welding manner; sleeving the welding end part of a second composite tube to be welded out of the annular gasket; and performing a welding operation on a stainless steel welding area, a transition welding area and a base layer welding area in sequence according to a conventional method, so that the stainless steel-carbon steel composite tube annular sealing welding is completed. According to the stainless steel-carbon steel composite tube annular sealing welding method, the connector parts of the two composite tubes to be welded can be positioned accurately; the welding construction difficulties are reduced; the mechanical properties of a connector are improved; the corrosion resistance is guaranteed; the passing resistance of a fluid medium in the tubes is low; welding defects, such as main alloy element burning damage, collapse, weld beading and back surface metal oxidation, can be prevented.
Description
Technical field
The invention belongs to metal tube welding field, and in particular to a kind of stainless steel and carbon steel multiple tube annular back cover welding side
Method.
Background technology
The welding of stainless steel and carbon steel multiple tube different from Stainless Steel-Carbon Steel Clad Sheet welding, traditional stainless steel-
Carbon steel composite board can first weld the larger basic unit of thickness, turn out afterwards, then weld the stainless steel composite bed of thickness very book.It is stainless
Steel-carbon steel composite tube can only first carry out stainless steel double and close the welding of layer due to being limited by caliber, then weld transition zone, most laggard
The welding of row basic unit.
As shown in figure 1, existing stainless steel and carbon steel composite tube welding is accomplished fluently after groove, on the basis of external diameter, will treat
Two pipes of welding are placed on a V-arrangement angle steel realizes positioning, and in order to ensure that composite bed is penetrated, the end of two steel pipes must be by
Weld job guiding book reserves 2 to 4mm or so gaps to ensure through welding, due to the stainless steel double of inwall under this welding condition
Close layer protection bad, easily cause composite laminated gold element oxidization burning loss, pool size is excessive, the too high weldering meat that formed of welding temperature collapses
Fall into, the welding procedure defect such as overlap.So as to reduce the mechanical property and corrosion resistance of whole welding point, while increasing in pipe
Media flow resistance.
Therefore how to overcome the deficiencies in the prior art be current stainless steel and carbon steel composite tube welding technical field of construction urgently
The problem that need to be solved.
The content of the invention
The invention aims to overcome above-mentioned weak point of the prior art, there is provided a kind of stainless steel and carbon steel is answered
Close pipe ring shape back cover welding method.
The present invention is realized by following technical proposal：A kind of stainless steel and carbon steel multiple tube annular back cover welding method, Jing
Cross the following steps：
（1）The ring liner that making is matched with the internal diameter of multiple tube to be welded；
（2）Groove is routinely beaten in the welding end of two multiple tubes to be welded, then by step（1）The half of ring liner is placed in
In the welding end of the first multiple tube to be welded, second half is exposed junction；The edge of ring liner is fixed in spot welding mode
On first compound inside pipe wall to be welded, then the welding end of the second multiple tube to be welded is enclosed within into the exposed junction of ring liner, is made
Gap between first, second compound tube end to be welded meets the requirements；Ring liner is set to play two multiple tubes to be welded
The effect of positioning and substrate；
（3）In step（2）Gap in routinely welding method carry out successively stainless steel welded area, graded seal area and basic unit weldering
The welding operation in area is connect, that is, completes the annular back cover welding of stainless steel and carbon steel multiple tube.
The step（1）Ring liner be and compound bore identical ring-type strip to be welded, the two of ring-type strip
There is inside 30 degree chamfering at edge.Chamfering both can guarantee that the welding requirements with the first multiple tube to be welded, can subtract in water again
Few resistance of the ring-type strip on inflow direction.
The step（1）Ring liner material it is identical with the internal layer material of stainless steel composite pipe.
For the benefit of stainless steel composite bed welding pool is effectively formed, and the ring liner outer wall middle part is provided with groove, recessed
Groove depth is less than the 1/3 of ring liner thickness.
The step（2）Groove of beating be to beat groove by 60 degree.
The step（2）The gap that meets the requirements between the docking end face for referring to two multiple tubes to be welded of gap should meet
The requirement of weld job guiding book, that is, reserve the gap of 2-4mm.
The step（2）The first multiple tube to be welded be arranged on fluid approach axis when in use.
The step（3）Welding method be GTAW, metal argon arc welding, SMAW etc..
Compared with prior art, its advantage is the present invention：Can be by the joint area positioning of two multiple tubes to be welded
Accurately, welding procedure difficulty, the mechanical property of raising joint, corrosion resistance are reduced secure, the resistance that tube fluid medium passes through
Power is little；Can prevent main alloy element scaling loss, subside, overlap, back metal oxidation etc. weld defect.
Description of the drawings
Fig. 1 is the structural representation of traditional welding；
Fig. 2 is the welding structure schematic diagram of two multiple tubes to be welded of the invention；
Fig. 3 is the partial enlarged drawing of A in Fig. 2；
Fig. 4 is the structural representation of ring liner；
Fig. 5 is A-A sectional views in Fig. 4.
Wherein：The multiple tubes to be welded of 1- first, the multiple tubes to be welded of 2- second, 3- ring liners, 4- stainless steel composite beds,
5- carbon steel base layers, 6- tack weldings area, the stainless steel welded areas of 7-, 8- graded seals area, 9- basic units weld zone, 10- internal diameter chamferings,
11- weld seams, 12- grooves, C- fluid flow directions.
Specific embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail.
（1）The ring liner 3 that making matches with the internal diameter of multiple tube to be welded；Ring liner 3 is ring-type strip, ring-type
There is inside 30 degree chamfering 10 two edges of strip；The material phase of the material of ring liner 3 and the internal layer 4 of stainless steel composite pipe
Together, it is stainless steel；The outer wall of ring liner 3 middle part is provided with groove 12, and the depth of groove 12 is less than the 1/3 of the thickness of ring liner 3；
（2）Groove is beaten in the welding end of two multiple tubes to be welded by 60 degree, then by step（1）The half of ring liner 3 is put
In the welding end of the first multiple tube to be welded 1, second half is exposed junction；The edge of ring liner 3 is consolidated in spot welding mode
It is scheduled on the inwall of the first multiple tube to be welded 1, afterwards the welding end of the second multiple tube to be welded 2 is enclosed within into ring liner 3
Exposed junction, and make the gap between the end of first, second multiple tube to be welded 1,2 meet the requirement of weld job guiding book,
Reserve the gap of 2-4mm；Two multiple tubes to be welded of ring liner 3 pair are made to play a part of positioning and substrate；First is to be welded
Connect multiple tube 1 and be arranged on fluid approach axis when in use；
（3）In step（2）Gap location routinely welding method（GTAW, metal argon arc welding or welding rod arc
Weldering etc.）The welding operation in stainless steel welded area 7, graded seal area 8 and basic unit weld zone 9 is carried out successively, and need not be torn open after welding
Except ring liner 3；It is finally completed the annular back cover welding of stainless steel and carbon steel multiple tube.
Claims (8)
1. a kind of stainless steel and carbon steel multiple tube annular back cover welding method, it is characterised in that through the following steps：
（1）The ring liner that making is matched with the internal diameter of multiple tube to be welded；
（2）Groove is routinely beaten in the welding end of two multiple tubes to be welded, then by step（1）The half of ring liner is placed in
In the welding end of the first multiple tube to be welded；The edge of ring liner is fixed on by the first multiple tube to be welded in spot welding mode
On inwall, then the welding end of the second multiple tube to be welded is enclosed within ring liner, and makes first, second multiple tube to be welded
End between gap meet the requirements；
（3）In step（2）Gap in routinely welding method carry out successively stainless steel welded area, graded seal area and basic unit weldering
The welding operation in area is connect, that is, completes the annular back cover welding of stainless steel and carbon steel multiple tube.
2. stainless steel and carbon steel multiple tube according to claim 1 annular back cover welding method, it is characterised in that：The step
Suddenly（1）Ring liner be with compound bore to be welded be adapted ring-type strip, the two edges of ring-type strip have inside
30 degree of chamferings.
3. stainless steel and carbon steel multiple tube according to claim 1 annular back cover welding method, it is characterised in that：The step
Suddenly（1）Ring liner material it is identical with the internal layer material of stainless steel composite pipe.
4. stainless steel and carbon steel multiple tube according to claim 2 annular back cover welding method, it is characterised in that：The ring
Shape liner outer wall middle part is provided with groove, and depth of groove is less than the 1/3 of ring liner thickness.
5. stainless steel and carbon steel multiple tube according to claim 1 annular back cover welding method, it is characterised in that：The step
Suddenly（2）Groove of beating be to beat groove by 60 degree.
6. stainless steel and carbon steel multiple tube according to claim 1 annular back cover welding method, it is characterised in that：The step
Suddenly（2）The gap that meets the requirements between the docking end face for referring to two multiple tubes to be welded of gap should meet weld job guiding book
Requirement, that is, reserve 2 to 4mm or so gaps.
7. stainless steel and carbon steel multiple tube according to claim 1 annular back cover welding method, it is characterised in that：The step
Suddenly（2）The first multiple tube to be welded be arranged on fluid approach axis when in use.
8. stainless steel and carbon steel multiple tube according to claim 1 annular back cover welding method, it is characterised in that：The step
Suddenly（3）Welding method be GTAW, metal argon arc welding, SMAW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611054396.3A CN106670670A (en) | 2016-11-25 | 2016-11-25 | Stainless steel-carbon steel composite tube annular sealing welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611054396.3A CN106670670A (en) | 2016-11-25 | 2016-11-25 | Stainless steel-carbon steel composite tube annular sealing welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106670670A true CN106670670A (en) | 2017-05-17 |
Family
ID=58867213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611054396.3A Pending CN106670670A (en) | 2016-11-25 | 2016-11-25 | Stainless steel-carbon steel composite tube annular sealing welding method |
Country Status (1)
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|---|---|
| CN (1) | CN106670670A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110524167A (en) * | 2019-08-28 | 2019-12-03 | 中国航发航空科技股份有限公司 | A kind of fixture and construction method for the welding of long narrow gap runner |
| CN110695499A (en) * | 2019-09-24 | 2020-01-17 | 江苏航运职业技术学院 | MAG welding process for austenitic stainless steel pipeline |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08103872A (en) * | 1994-10-04 | 1996-04-23 | Nippon Steel Corp | Method for welding wear resistant composite tube |
| JP2004276035A (en) * | 2003-03-12 | 2004-10-07 | Daido Steel Co Ltd | Welded joint excellent in resistance to caulking of metallic composite pipe |
| CN201269372Y (en) * | 2008-10-09 | 2009-07-08 | 杭州市特种设备检测院 | Soldering connection structure of aluminum and aluminum alloy pipe |
| CN102554484A (en) * | 2012-01-11 | 2012-07-11 | 阮继成 | Metal pipe welding method and metal pipe welding assembly |
| 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 |
| CN104493330A (en) * | 2014-11-11 | 2015-04-08 | 中国石油天然气集团公司 | Circumferential weld butt welding method of double-metal composite pipe |
| 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 |
-
2016
- 2016-11-25 CN CN201611054396.3A patent/CN106670670A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08103872A (en) * | 1994-10-04 | 1996-04-23 | Nippon Steel Corp | Method for welding wear resistant composite tube |
| JP2004276035A (en) * | 2003-03-12 | 2004-10-07 | Daido Steel Co Ltd | Welded joint excellent in resistance to caulking of metallic composite pipe |
| CN201269372Y (en) * | 2008-10-09 | 2009-07-08 | 杭州市特种设备检测院 | Soldering connection structure of aluminum and aluminum alloy pipe |
| CN102554484A (en) * | 2012-01-11 | 2012-07-11 | 阮继成 | Metal pipe welding method and metal pipe welding assembly |
| 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 |
| CN104493330A (en) * | 2014-11-11 | 2015-04-08 | 中国石油天然气集团公司 | Circumferential weld butt welding method of double-metal composite pipe |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110524167A (en) * | 2019-08-28 | 2019-12-03 | 中国航发航空科技股份有限公司 | A kind of fixture and construction method for the welding of long narrow gap runner |
| CN110695499A (en) * | 2019-09-24 | 2020-01-17 | 江苏航运职业技术学院 | MAG welding process for austenitic stainless steel pipeline |
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Application publication date: 20170517 |