CN106825874A - A kind of submerged-arc welding single face welding and double face shaping technique - Google Patents
A kind of submerged-arc welding single face welding and double face shaping technique Download PDFInfo
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- CN106825874A CN106825874A CN201710147919.7A CN201710147919A CN106825874A CN 106825874 A CN106825874 A CN 106825874A CN 201710147919 A CN201710147919 A CN 201710147919A CN 106825874 A CN106825874 A CN 106825874A
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- welding
- submerged
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- shaping technique
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- 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
- B23K9/18—Submerged-arc welding
- B23K9/186—Submerged-arc welding making use of a consumable electrodes
- B23K9/188—Submerged-arc welding making use of a consumable electrodes making use of several electrodes
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- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of submerged-arc welding single face welding and double face shaping technique, comprise the following steps：Retaining wall on slope is carried out to mother metal, the impurity of the groove end face and its surrounding is removed；Groove docking described in two is carried out into tubulation joint close, tack welding is carried out at a certain distance at gap；Increase respectively and the mother metal thickness identical run-on tab and end tab at the gap two ends；To include that inner liner is sent into inside tubing with the support member of air bag, be close to the groove root, solder flux will be paved with above the inner liner, and the inner liner is fitted with the tubing to gas is injected in the air bag；To the gap weld the submerged-arc welding single face welding and double face shaping technique of present invention offer using the molten bath submerged-arc welding of dual power supply double-arc tournaments list; eliminate semi-automatic gas shielded arc welding bottoming operation; production procedure is shortened, the non-penetration phenomenon of the root of weld is reduced and be ensure that weldquality.
Description
Technical field
The present invention relates to steel construction power industry steel pipe manufacture welding field, more particularly to a kind of submerged-arc welding list
Weld double-side molding process in face.
Background technology
In pressed-steel pipe manufacturing industry, its longitudinal seam welding quality requirement be full penetration first-order weld, steel pipe caliber Φ 275~
450mm, 6~12mm of wall thickness, more using V-butt multi-pass welding；This kind of welding procedure automaticity is not high, need to typically have half certainly
Two steps of gas shielded arc welding bottoming submerged-arc welding capping are moved to complete.This prevents that submerged-arc welding, from fully achieving brakingization, increases
Welding sequence, while also increase the welding job cycle.
First road backing welding being appeared in during actual welding, weld defect simultaneously, because the welding of first road backing welding more
Method is semi-automatic gas shielded arc welding and need to accomplish single face welding and double face shaping, and the solder technology requirement to workman is strong, and is
Ensure that the again natural use low current of single face welding and double face shaping is welded, therefore slowed down speed of welding again.
Existing operating procedure there is low productivity ratio, high cost and operative's labour intensity is larger, and operating efficiency is relatively low.
The content of the invention
In view of the above problems, the invention provides the submerged-arc welding of a kind of low cost, welding quality stable and high working efficiency
Single face welding and double face shaping technique.
The present invention provides a kind of submerged-arc welding single face welding and double face shaping technique, comprises the following steps：Groove is carried out to mother metal to add
Work, removes the impurity of the groove end face and its surrounding；Groove docking described in two is carried out into tubulation joint close, every pre- at gap
Set a distance carries out tack welding；Increase respectively and the mother metal thickness identical run-on tab and end tab at the gap two ends；Will
Inside support member feeding tubing including inner liner and air bag, it is close to the groove root, is paved with above the inner liner
Solder flux, makes the inner liner be fitted with the tubing to gas is injected in the air bag；Using dual power supply double-arc tournaments list molten bath
Submerged-arc welding is welded to the gap.
Further, the dual power supply double-arc tournaments list molten bath submerged-arc welding, specially：Preceding road uses the low electric arc of big welding current
DC voltage；Road uses the big electric arc alternating current voltage of big welding current afterwards.
Further, during welding, preceding road gage of wire is 3.2mm, and electric current is 350~450A, and voltage is 28~29V；Road afterwards
Gage of wire is 4.0~5.0mm, and electric current is 420~480A, and voltage is 31~34V；Speed of welding is 360~380min/mm.
Further, during welding, perpendicular to the gap, the rear road welding gun preceding road welding gun turns forward 10 to preceding road welding gun
~12 °, and front and rear interelectrode distance is 17~19mm.
Preferably, the support member also includes bracket and supporting plate；The bracket is arranged at bottom for air bag described in support,
The side plate upwardly extended including base plate and from the base plate both sides；The supporting plate be arranged at the air bag and the inner liner it
Between, for inner liner described in support.
Preferably, the inner liner is high temperature resistant pad, and can be deformed upon under the extruding of the air bag and the pipe
Material is fitted.
Preferably, the inner liner includes main part and the side wall extended downwardly from the main part both sides, the side wall
It is socketed on the outside of the side plate.
Preferably, the groove type is V-type, and 0~2mm of root face, bevel angle is 55~60 °；Groove end face described in two
Between distance be not more than 1mm, unfitness of butt joint is not more than 1.5mm.
Preferably, the welding method of the tack welding is semi-automatic gas shielded arc welding, and spot pitch is that 300~500mm is equal
Even distribution.
Preferably, after the use dual power supply double-arc tournaments list molten bath submerged-arc welding is welded to the gap, also wrap
Include：The run-on tab and the end tab are removed, and carries out welding quality inspection.
It is double using dual power supply based on the submerged-arc welding single face welding and double face shaping technique that the present invention is provided relative to prior art
Arc mariages list molten bath submerged-arc welding is welded：Preceding road uses the low electric arc DC voltage of big welding current, gives full play to direct-current arc
Penetration power, obtain preferable fusion penetration effect；Road uses the big electric arc alternating current voltage of big welding current afterwards, increases molten wide, overcomes preceding road
The fusing metal that high current is likely to form is piled up, and is coordinated and is welded at high speed, so as to form appearance of weld attractive in appearance；Eliminate half certainly
Dynamic gas shielded arc welding bottoming operation, shortens production procedure, reduces the non-penetration phenomenon of the root of weld and ensure that weldquality.
The aspects of the invention or other aspects can more straightforwards in the following description.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will make needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those skilled in the art, on the premise of not paying creative work, can also obtain other attached according to these accompanying drawings
Figure.
Fig. 1 is the construction schematic diagram of an embodiment of the present invention submerged-arc welding single face welding and double face shaping technique；
Fig. 2 is the groove gap schematic diagram of an embodiment of the present invention submerged-arc welding single face welding and double face shaping technique.
Specific embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those skilled in the art are not having
There is the every other embodiment made and being obtained under the premise of creative work, belong to the scope of protection of the invention.
The present invention provides a kind of submerged-arc welding single face welding and double face shaping technique, as a kind of embodiment, such as Fig. 1 and Fig. 2, including
Following steps：
Groove 11 is processed：Thickness d 2 according to mother metal 1 carries out groove 11 and processes, and the form of the groove 11 is V-type, root face 0
~2mm, the bevel angle α are 55~60 °.
Polishing joint：Remove the impurity of the end face of the groove 11 and its surrounding；Specifically available abrasive machine is to slope described in two
Polishing is carried out in the range of 11 end faces of mouth and 20mm and removes iron rust and oxide skin.
It is assembled：The docking of groove described in two 11 is carried out into tubulation joint close so that the end distance between the surface d3 of groove 11 is little described in two
In 1mm, unfitness of butt joint d4 is not more than 1.5mm.
Tack welding：Using the welding method of semi-automatic gas shielded arc welding, positioned every preset distance at gap 10
Weldering；Tack weld (not shown) thickness is no less than 3mm, and length is no less than 40mm, and it is uniform that its spacing should be 300~500mm
Distribution, welding wire used must match with the mother metal 1.
Increase run-on tab (not shown) and end tab (not shown)：Increase respectively and the mother metal at the two ends of the gap 10
The identical run-on tab of 1 thickness d 2 and end tab, its specification are 100mm × 60mm.
Place support member 2：To include that inner liner 21 is sent into inside tubing with the support member 2 of air bag 22, be close to the groove
11 roots, solder flux 4 is paved with the top of the inner liner 21, is started air compressor (not shown) and is injected in the air bag 22
Gas makes the inner liner 21 be fitted with the tubing.Preferably, the support member 2 also includes bracket 24 and supporting plate 23；It is described
Bracket 24 is arranged at bottom for air bag 22 described in support, including base plate (not shown) and upwardly extended from the base plate both sides
Side plate (not shown)；The supporting plate 23 is arranged between the air bag 22 and the inner liner 21, for inner liner described in support
21.The inner liner 21 is high temperature resistant pad, and can be deformed upon under the extruding of the air bag 22 and fitted with the tubing.Institute
Stating inner liner 21 includes main part (not shown) and the side wall (not shown) extended downwardly from the main part both sides, the side wall
It is socketed on the outside of the side plate.
Welding：Welded using dual power supply double-arc tournaments list molten bath submerged-arc welding, preceding road uses the low electric arc of big welding current
DC voltage；Road uses the big electric arc alternating current voltage of relatively small welding current afterwards.
Welding is completed, and is tested：Whether inspection weld seam has rosin joint solder skip, if rosin joint solder skip also needs to carry out repair welding；
Checked whether to weld or weld impurity attachment simultaneously, polished if necessary.
Used as a kind of embodiment, during welding, preceding road welding gun 31 is perpendicular to the gap 10, the rear preceding road of road welding gun 32
Welding gun turns forward 10~12 °, and front and rear interelectrode distance d1 is 17~19mm.
Used as a kind of embodiment, welding parameter proportioning is a diameter of 3.2mm of preceding road welding wire (not shown) during welding, and electric current is
350~450A, voltage is 28~29V, and speed of welding is 360~380min/mm；Afterwards road welding wire (not shown) a diameter of 4.0~
5.0mm, electric current is 420~480A, and voltage is 31~34V；Speed of welding is 360~380min/mm.
Compared with prior art, submerged-arc welding single face welding and double face shaping technique of the present invention has advantages below：
(1) semi-automatic gas shielded arc welding bottoming operation is eliminated, the non-penetration phenomenon of the root of weld is reduced and be ensure that weld seam
Quality, at the same also because reduce production in one bottoming operation, shorten production procedure.
(2) carry out welding 2.5 times that its welding efficiency is monofilament submerged-arc welding using double wire hidden arc welding, to a certain extent
Improve welding efficiency reduces the labour intensity of welder.
(3) preceding road uses the low electric arc DC voltage of big welding current, gives full play to the penetration power of direct-current arc, obtains preferably
Fusion penetration effect；Road uses the big electric arc alternating current voltage of big welding current afterwards, increases molten wide, and overcome that preceding road high current is likely to form is molten
Change metal accumulation, coordinate and weld at high speed, so as to form appearance of weld attractive in appearance.
A kind of flow of submerged-arc welding single face welding and double face shaping technique provided by the present invention is described in detail above, it is right
In those of ordinary skill in the art, according to the thought of the embodiment of the present invention, can in specific embodiments and applications
There is change part, in sum, this specification content should not be construed as limiting the invention.
Claims (10)
1. a kind of submerged-arc welding single face welding and double face shaping technique, comprises the following steps：
Retaining wall on slope is carried out to mother metal, the impurity of the groove end face and its surrounding is removed；
Groove docking described in two is carried out into tubulation joint close, tack welding is carried out every preset distance at gap；
Increase respectively and the mother metal thickness identical run-on tab and end tab at the gap two ends；
To include that inner liner is sent into inside tubing with the support member of air bag, be close to the groove root, in the upper of the inner liner
Side is paved with solder flux, the inner liner is fitted with the tubing to gas is injected in the air bag；
The gap is welded using dual power supply double-arc tournaments list molten bath submerged-arc welding.
2. submerged-arc welding single face welding and double face shaping technique according to claim 1, the dual power supply double-arc tournaments list molten bath is buried
Arc-welding, specially：Preceding road uses the low electric arc DC voltage of big welding current；Road is using the big electric arc alternating current electricity of big welding current afterwards
Pressure.
3. submerged-arc welding single face welding and double face shaping technique according to claim 2, it is characterised in that：During welding, preceding road welding wire
A diameter of 3.2mm, electric current is 350~450A, and voltage is 28~29V；Road gage of wire is 4.0~5.0mm afterwards, and electric current is 420
~480A, voltage is 31~34V；Speed of welding is 360~380min/mm.
4. the submerged-arc welding single face welding and double face shaping technique according to Claims 2 or 3, it is characterised in that：During welding, preceding road weldering
Rifle turns forward 10~12 ° perpendicular to the gap, the rear road welding gun preceding road welding gun, and front and rear interelectrode distance be 17~
19mm。
5. submerged-arc welding single face welding and double face shaping technique according to claim 1, it is characterised in that：
The support member also includes bracket and supporting plate；
The bracket is arranged at bottom for air bag described in support, including base plate and the side that is upwardly extended from the base plate both sides
Plate；
The supporting plate is arranged between the air bag and the inner liner, for inner liner described in support.
6. submerged-arc welding single face welding and double face shaping technique according to claim 5, it is characterised in that：The inner liner is resistance to height
Temperature pad, and can be deformed upon under the extruding of the air bag and fitted with the tubing.
7. submerged-arc welding single face welding and double face shaping technique according to claim 6, it is characterised in that：The inner liner includes master
Body portion and the side wall extended downwardly from the main part both sides, the sidewall sheath are connected to the outside of the side plate.
8. submerged-arc welding single face welding and double face shaping technique according to claim 1, it is characterised in that：The groove type is V
Type, 0~2mm of root face, bevel angle is 55~60 °；Bevel end distance between the surface is not more than 1mm described in two, and unfitness of butt joint is not more than
1.5mm。
9. submerged-arc welding single face welding and double face shaping technique according to claim 1, it is characterised in that：The welding of the tack welding
Method is semi-automatic gas shielded arc welding, and spot pitch is uniformly distributed for 300~500mm.
10. submerged-arc welding single face welding and double face shaping technique according to claim 1, in the use dual power supply double-arc tournaments list
After molten bath submerged-arc welding is welded to the gap, also include：The run-on tab and the end tab are removed, and carries out welding matter
Amount is checked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710147919.7A CN106825874B (en) | 2017-03-10 | 2017-03-10 | A kind of submerged-arc welding single face welding and double face shaping technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710147919.7A CN106825874B (en) | 2017-03-10 | 2017-03-10 | A kind of submerged-arc welding single face welding and double face shaping technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106825874A true CN106825874A (en) | 2017-06-13 |
| CN106825874B CN106825874B (en) | 2019-11-26 |
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Cited By (7)
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| CN107081535A (en) * | 2017-07-03 | 2017-08-22 | 西京学院 | A kind of steel pipe grafting joint for improving structural strength |
| CN107717189A (en) * | 2017-09-30 | 2018-02-23 | 上海振华重工(集团)股份有限公司 | A kind of three wire bond rifles and multi-wire submerged-arc soldering method |
| CN108145339A (en) * | 2017-09-15 | 2018-06-12 | 上海江南长兴造船有限责任公司 | A kind of welding material combination object for soft cushioning single side Lincoln weld |
| CN108465918A (en) * | 2018-06-01 | 2018-08-31 | 江阴市三和重工钢制品有限公司 | The butt-joint process of different wall thickness steel pipe |
| CN108788411A (en) * | 2018-07-02 | 2018-11-13 | 中国电建集团核电工程有限公司 | Back chipping welding procedure is exempted from medium plate splicing |
| CN110315158A (en) * | 2019-06-28 | 2019-10-11 | 中国二十二冶集团有限公司 | Electrolytic cell bottom plate square groove splicing welding method |
| CN111230265A (en) * | 2020-02-25 | 2020-06-05 | 重庆川东船舶重工有限责任公司 | Single-side forming welding method for aluminum alloy gasket |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107081535A (en) * | 2017-07-03 | 2017-08-22 | 西京学院 | A kind of steel pipe grafting joint for improving structural strength |
| CN107081535B (en) * | 2017-07-03 | 2019-05-03 | 西京学院 | A kind of steel pipe grafting connector improving structural strength |
| CN108145339A (en) * | 2017-09-15 | 2018-06-12 | 上海江南长兴造船有限责任公司 | A kind of welding material combination object for soft cushioning single side Lincoln weld |
| CN108311814A (en) * | 2017-09-15 | 2018-07-24 | 上海江南长兴造船有限责任公司 | A kind of welding material combination object for soft cushioning single side Lincoln weld |
| CN108311814B (en) * | 2017-09-15 | 2020-04-21 | 上海江南长兴造船有限责任公司 | Welding material composition for single-side submerged arc automatic welding of soft gasket |
| CN107717189A (en) * | 2017-09-30 | 2018-02-23 | 上海振华重工(集团)股份有限公司 | A kind of three wire bond rifles and multi-wire submerged-arc soldering method |
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| CN108465918A (en) * | 2018-06-01 | 2018-08-31 | 江阴市三和重工钢制品有限公司 | The butt-joint process of different wall thickness steel pipe |
| CN108788411A (en) * | 2018-07-02 | 2018-11-13 | 中国电建集团核电工程有限公司 | Back chipping welding procedure is exempted from medium plate splicing |
| CN110315158A (en) * | 2019-06-28 | 2019-10-11 | 中国二十二冶集团有限公司 | Electrolytic cell bottom plate square groove splicing welding method |
| CN111230265A (en) * | 2020-02-25 | 2020-06-05 | 重庆川东船舶重工有限责任公司 | Single-side forming welding method for aluminum alloy gasket |
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