CN108856990A - The method that MAG weldering carries out the welding of tipping tube pipe - Google Patents
The method that MAG weldering carries out the welding of tipping tube pipe Download PDFInfo
- Publication number
- CN108856990A CN108856990A CN201810792195.6A CN201810792195A CN108856990A CN 108856990 A CN108856990 A CN 108856990A CN 201810792195 A CN201810792195 A CN 201810792195A CN 108856990 A CN108856990 A CN 108856990A
- Authority
- CN
- China
- Prior art keywords
- welding
- molten bath
- bottoming
- solder joint
- solidification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- 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
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
- B23K9/0052—Welding of pipe panels
Abstract
The invention discloses a kind of MAG to weld the method for carrying out the welding of tipping tube pipe, is related to welding technology field, provides a kind of welding method that can be improved welding quality.The welding method includes step：A, weld preparation；B, backing weld seam is welded, specifically：It first passes through " three point attachment method " and welds initial bottoming solidification molten bath, then axially welding multiple tracks bottoming solidification molten bath is one week full to welding in two edge pipe of initial bottoming solidification molten bath；C, cap weld is welded, specifically axially welding multiple tracks capping solidification molten bath is one week full to welding along pipe.The present invention welds the several segments current interruption that the sequential welding that circumferencial direction carries out is converted into rectilinear direction progress, conducive to the control of angle of welding gun when welding, is easily guaranteed that weldquality and shape.
Description
Technical field
The present invention relates to the methods that welding technology field more particularly to a kind of MAG weldering carry out the welding of tipping tube pipe.
Background technique
MAG weldering refers to that consumable electrode metal active gas arc welding, MAG are welded relative to existing common stick electrode electric arc
Weldering, the advantage for having welding efficiency high, at low cost, therefore application is more and more extensive.
It is downhand weld that MAG, which is welded on welded unit as the biggish components of mother metal thickness such as blast furnace, Converter skin or weld seam,
It is all to be welded using even arc-welding, operation difficulty is smaller and when fillet weld in the flat position.But carrying out the little Pipeline butt of thickness
It connects and when Tube-sheet Welding, weld seam is circumferencial direction, if MAG weldering belongs to automatic feeding in itself using conventional company's arc welding, send
Quickly, the molding that operator will control weld seam must assure that again rotates rapidly its operation difficulty of angle of welding gun to silk speed when welding
It is larger；Welding difficulty is bigger when especially pipeline or tube sheet are in heeling condition；It is easy to appear different degrees of overlap, joint
Manage improper, undercut, weldering meat deflection, the problems such as appearance is unqualified.Weld seam front is not can guarantee at all in bottom welding especially
With the molding at the back side, weld seam front is all that intermediate projections two sides form very deep clip slot.
Summary of the invention
The technical problem to be solved by the present invention is to：A kind of MAG weldering progress tipping tube pipe can be improved welding quality is provided
The method of welding.
In order to solve the above problem the technical solution adopted is that：The method that MAG weldering carries out the welding of tipping tube pipe includes following step
Suddenly：
A, first welding groove is set in the first tube end to be welded, second welding groove is set in the second tube end to be welded,
Make first be arranged and fix to welded tube inclination face interval to welded tube and second, first is located above to welded tube, the first welded tube with
Position between second welded tube is welding position；
B, backing weld seam is welded, specifically：Firstly, in welding position bottom and after the first tube wall root to be welded striking
Blow-out immediately forms the first solder joint；Then, in welding position bottom and the blow-out immediately after the second tube wall root to be welded striking
Form the second solder joint；Then, spot welding forms blow-out behind molten bath between the first solder joint and the second solder joint, forms the first solder joint of connection
With the third solder joint of the second solder joint；First solder joint, the second solder joint and third solder joint form initial bottoming solidification molten bath；Then, exist
Intermediate root position striking beside initial bottoming solidification molten bath, observation molten bath are expanded to the first welding groove and the second welding slope
The formation of blow-out immediately bottoming solidifies molten bath when mouth, then welds to form latter bottoming and solidify beside previous bottoming solidification molten bath and melt
Pond；Then, it repeats to weld repeatedly, welds to form multiple bottoming solidification molten baths until bottoming is solidifying on initial bottoming solidification molten bath both sides
Gu molten bath closes up on welding position top；
C, in backing weld seam A external welding cap weld, specifically：Firstly, in the welding of welding position bottom, in the first welding
Welding gun, molten bath and the second welding are swung to the second welding groove immediately after striking on groove, molten bath and the fusion of the first welding groove
Blow-out immediately forms capping solidification molten bath after groove fusion；Then, repeatedly, after being welded beside previous capping solidification molten bath
One capping solidification molten bath is until capping solidification molten bath closes up at the top of welding position；Latter capping solidification molten bath covers previous capping
Solidify at least half in molten bath.
It is further：The quantity of cap weld is two layers.
The beneficial effects of the invention are as follows：If the sequential welding that circumferencial direction carries out is converted rectilinear direction progress by the present invention
Dry section current interruption weldering is easily guaranteed that weldquality and shape conducive to the control of angle of welding gun when welding.Through analyzing, background technique institute
It is that backing run is narrow, and welding wire melting rate is fast that state backing weld seam defect Producing reason, which be main cause, and weldering meat is toward two side-sways
It moves limited, causes weld seam medium temperature excessively high, step B can avoid the situation, guarantee backing weld seam quality, while being also avoided that weldering
Silk fracture of wire.Step C can avoid generating internal overlap.To sum up, the present invention can effectively control welding defect, guarantee welding quality.
Detailed description of the invention
Fig. 1 is initial bottoming solidification molten-bath arc welding map interlinking；
Fig. 2 is backing weld seam schematic diagram；
Fig. 3 is capping solidification molten-bath arc welding map interlinking；
Fig. 4 is the weld seam schematic diagram of pipe pipe welding；
In figure label for：First to welded tube 1, the first welding groove 2, second to welded tube 3, the second welding groove 4, welding position
Set the 5, first solder joint 6, the second solder joint 7, third solder joint 8, initial bottoming solidification molten bath 9, backing weld seam 10, bottoming solidification molten bath
11, capping solidifies molten bath 12, cap weld 13.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
The method that MAG weldering carries out the welding of tipping tube pipe includes the following steps：A, first to the first weldering of 1 end of welded tube setting
Groove 2 is connect, the second welding groove 4 is set to 3 end of welded tube second, makes first to tilt face to welded tube 3 to welded tube 1 and second
Interval is arranged and fixes, and first is located above to welded tube 1, and the position between the first welded tube 1 and the second welded tube 3 is welding position 5；
B, backing weld seam 10 is welded, specifically：Firstly, drawing in 5 bottom of welding position and first to 1 tube wall root of welded tube
Blow-out immediately forms the first solder joint 6 after arc；Then, it is stood after 3 tube wall root striking of welded tube in 5 bottom of welding position and second
I.e. blow-out forms the second solder joint 7；Then, spot welding forms blow-out behind molten bath between the first solder joint 6 and the second solder joint 7, the company of being formed
Connect the third solder joint 8 of the first solder joint 6 and the second solder joint 7；First solder joint 6, the second solder joint 7 and third solder joint 8 form initial bottoming
Solidify molten bath 9；Then, in the intermediate root position striking on 9 side of initial bottoming solidification molten bath, observation molten bath is expanded to the first weldering
Blow-out immediately forms bottoming solidification molten bath 11 when connecing groove 2 and the second welding groove 4, then on 11 side of previous bottoming solidification molten bath
Welding forms latter bottoming solidification molten bath 11；Then, it repeats to weld repeatedly, welds to be formed on initial bottoming solidification 9 both sides of molten bath
Multiple bottoming solidification molten baths 11 are until bottoming solidification molten bath 11 closes up on 5 top of welding position；
C, in 10 external welding cap weld 13 of backing weld seam, specifically：Firstly, in 5 bottom welding of welding position, first
Welding gun, molten bath and the are swung to the second welding groove 4 immediately after striking on welding groove 2, molten bath and the fusion of the first welding groove 2
Blow-out immediately forms capping solidification molten bath 12 after the fusion of two welding grooves 4；Then, repeatedly, molten bath is solidified in previous capping
Latter capping solidification molten bath 12 is welded on 12 sides until capping solidification molten bath 12 closes up at the top of welding position 5；Latter capping is solidifying
Gu molten bath 12 covers at least half in previous capping solidification molten bath 12.
Cap weld 13 can determine the number of plies according to the depth of weld, can be one layer, two layers or more.
When the present invention welds, when especially welding backing weld seam 10, welding bead is narrow, and welding wire amount of movement is small, should be using rotation
The mode of wrist swings welding gun rather than the swing of arm.
Claims (2)
- The method that 1.MAG weldering carries out the welding of tipping tube pipe, it is characterised in that：Include the following steps：A, the first welding groove (2) are set to welded tube (1) end first, second to the second welding of welded tube (3) end setting Groove (4) makes first to be arranged and fix to welded tube (3) inclination face interval to welded tube (1) and second, and first to welded tube (1) position Position between top, the first welded tube (1) and the second welded tube (3) is welding position (5)；B, backing weld seam (10) are welded, specifically：Firstly, welding position (5) bottom and first to welded tube (1) tube wall root Blow-out immediately forms the first solder joint (6) after striking；Then, welding position (5) bottom and second to welded tube (3) tube wall root Blow-out immediately forms the second solder joint (7) after striking；Then, spot welding forms molten bath between the first solder joint (6) and the second solder joint (7) Blow-out afterwards forms the third solder joint (8) of connection the first solder joint (6) and the second solder joint (7)；First solder joint (6), the second solder joint (7) Initial bottoming solidification molten bath (9) is formed with third solder joint (8)；Then, the intermediate root beside initial bottoming solidification molten bath (9) Position striking, blow-out immediately forms bottoming and solidifies when observation molten bath is expanded to the first welding groove (2) and the second welding groove (4) Molten bath (11), then welding forms latter bottoming solidification molten bath (11) beside previous bottoming solidification molten bath (11)；Then, it repeats to weld It connects repeatedly, welds to form multiple bottoming solidifications molten bath (11) until bottoming solidifies molten bath on initial bottoming solidification molten bath (9) both sides (11) close up on welding position (5) top；C, in backing weld seam A (10) external welding cap weld (13), specifically：Firstly, in welding position (5) bottom welding, Immediately to the second welding groove (4) weave bead welding after striking on first welding groove (2), molten bath and the first welding groove (2) fusion Blow-out immediately forms capping solidification molten bath (12) after rifle, molten bath and the second welding groove (4) fusion；Then, repeatedly, preceding One capping, which solidifies, welds latter capping solidification molten bath (12) until capping solidification molten bath (12) is in welding position beside molten bath (12) (5) top closes up；Latter capping solidification molten bath (12) covers at least half of previous capping solidification molten bath (12).
- 2. the method that MAG weldering according to claim 1 carries out the welding of tipping tube pipe, it is characterised in that：Cap weld (13) Quantity be two layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810792195.6A CN108856990B (en) | 2018-07-18 | 2018-07-18 | Method for welding inclined pipe by MAG welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810792195.6A CN108856990B (en) | 2018-07-18 | 2018-07-18 | Method for welding inclined pipe by MAG welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108856990A true CN108856990A (en) | 2018-11-23 |
| CN108856990B CN108856990B (en) | 2020-11-10 |
Family
ID=64303101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810792195.6A Active CN108856990B (en) | 2018-07-18 | 2018-07-18 | Method for welding inclined pipe by MAG welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108856990B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51146348A (en) * | 1975-06-11 | 1976-12-15 | Nippon Steel Corp | Method of automatic arc welding for butt weld of inclined steel pipes |
| JP2001018065A (en) * | 1999-07-05 | 2001-01-23 | Kawasaki Steel Corp | Butt welding of inclined steel tubes |
| CN102601488A (en) * | 2012-03-22 | 2012-07-25 | 上海锅炉厂有限公司 | Method for welding covering layer of inclined tube |
| CN102601486A (en) * | 2012-03-22 | 2012-07-25 | 上海锅炉厂有限公司 | Method for welding base coat of inclined tube |
| CN105921862A (en) * | 2016-06-27 | 2016-09-07 | 葛洲坝机械工业有限公司 | Welding treatment method suitable for oblique crossing combined forming of steel pipes |
-
2018
- 2018-07-18 CN CN201810792195.6A patent/CN108856990B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51146348A (en) * | 1975-06-11 | 1976-12-15 | Nippon Steel Corp | Method of automatic arc welding for butt weld of inclined steel pipes |
| JP2001018065A (en) * | 1999-07-05 | 2001-01-23 | Kawasaki Steel Corp | Butt welding of inclined steel tubes |
| CN102601488A (en) * | 2012-03-22 | 2012-07-25 | 上海锅炉厂有限公司 | Method for welding covering layer of inclined tube |
| CN102601486A (en) * | 2012-03-22 | 2012-07-25 | 上海锅炉厂有限公司 | Method for welding base coat of inclined tube |
| CN105921862A (en) * | 2016-06-27 | 2016-09-07 | 葛洲坝机械工业有限公司 | Welding treatment method suitable for oblique crossing combined forming of steel pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108856990B (en) | 2020-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100450692C (en) | Large posted sides pipeline narrow gap tungsten electrode noble gas protecting all-position automatic soldering method | |
| CN108856965A (en) | The method that MAG weldering carries out inclination Tube-sheet Welding | |
| CN102528237B (en) | Welding process for carbon steel process pipeline | |
| WO2021057307A1 (en) | Welding method for single-sided welding and double-sided forming of mag inverted butt joint | |
| US20110108527A1 (en) | Method of arc welding root pass | |
| CN105583523B (en) | A kind of method of ultrasonic wave added Laser Deep Penetration Welding jointed sheet material | |
| CN103737158B (en) | A kind of electric arc welding gun with double consumable electrodes and a welding method thereof controlled based on heat input | |
| CN108788507A (en) | A kind of divided edge structure and welding procedure of steel plate welding | |
| CN106862730A (en) | A kind of vertical butt welding method of slab | |
| CN101421069A (en) | Metal cored electrode for open root pass welding | |
| WO2021109612A1 (en) | All-position welding method for small-diameter pipe | |
| CN100464919C (en) | 45 DEG all-position back-sealing butt welding method for pipe with small diameter | |
| CN101890555A (en) | 45-degree fixed cross obstacle small-bore tube connected-arc cover surface welding method | |
| CN105583503A (en) | Carbon steel tube welding process | |
| CN108608097B (en) | Single-side welding and double-side forming welding method for thick-wall vertical crater of centralized downcomer | |
| CN108500429A (en) | A kind of welding method of composite bimetal pipe | |
| CN102785017B (en) | Composite welding process used in narrow space | |
| CN110102861A (en) | A kind of metal transfer of MIG/MAG accurately controls one side welding with back formation method | |
| CN108015394A (en) | A kind of stainless steel tube welding method | |
| CN105364272A (en) | Carbon steel tube welding process | |
| CN108856990A (en) | The method that MAG weldering carries out the welding of tipping tube pipe | |
| CN112404660A (en) | Pipeline welding method | |
| CN103357994A (en) | Semi-automatic backing welding method for consumable electrode of stainless steel gasket of aluminum alloy plate | |
| JP3723163B2 (en) | Aluminum alloy welding method and aluminum alloy welding apparatus | |
| JP3727910B2 (en) | Aluminum alloy welding method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |