CN109317783A - A kind of cut deal T-type twin arc welding takes bottom technique - Google Patents
A kind of cut deal T-type twin arc welding takes bottom technique Download PDFInfo
- Publication number
- CN109317783A CN109317783A CN201811358726.7A CN201811358726A CN109317783A CN 109317783 A CN109317783 A CN 109317783A CN 201811358726 A CN201811358726 A CN 201811358726A CN 109317783 A CN109317783 A CN 109317783A
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- welding
- arc
- steel web
- groove
- backing plate
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Classifications
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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
- B23K9/02—Seam welding; Backing means; Inserts
-
- 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
-
- 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
- B23K9/235—Preliminary treatment
Abstract
The invention discloses a kind of cut deal T-type twin arc weldings to take bottom technique, its twin arc welding takes bottom technique step are as follows: (1) H steel web blanking, want -3mm to -5mm, full penetration weld of the H steel web greater than 16mm opens two-sided K shape groove, groove width is 16mm-18mm, groove does not stay root face, stay the gap 4mm-6mm, (2) within the scope of each 50mm in full penetration weld position two sides among the shape groove position H steel web K and the edge of a wing to cut the polishing of the impurity such as slag, oxide skin, iron rust clean, be in metallochrome.(3) it is 4mm-6mm that full penetration weld group stays gap immediately, gap is controlled using the backing plate of 1 piece of 5mm every 500mm-600mm, tack weld position within backing plate 10mm, tack welding spacing is consistent with liner space, it is spaced 500mm-600mm, tack weld length 50mm, H steel web plate section will put full penetration weld shrinkage 3mm-5mm to group immediately.The present invention opens double groove by H steel web, does not stay root face, stays gap 4-5mm, and double arc bottom weldings do not have to gouge back chipping, substantially increase welding quality, efficiency, reduce production cost.
Description
Technical field
The present invention relates to welded steel fields more particularly to a kind of cut deal T-type twin arc welding to take bottom technique.
Background technique
Currently, more and more design H-types in the engineerings such as domestic steel-structure factory building, crane girder, civil buildings high-rise steel structure
Steel leading role's level weld seam requirement full penetration, and it is qualified to require level-one or second level UT to detect a flaw.For such weld seam most domestic steel construction
Producer all uses the construction technology of reverse side gouge back chipping method, and working efficiency is very low, higher cost, and construction environment is poor.My company adopts
Bottom technology (web thickness >=16mm) is taken with cut deal T-type twin arc welding, by repetition test, continuously improves, finally develops
Web opens double groove, stays root face, stays gap, and bottoming does not have to gouge back chipping, and direct gas shield welding bottoming and filling guarantee full penetration
New welding procedure.
Summary of the invention
The main purpose of the present invention is to provide a kind of cut deal T-type twin arc weldings to take bottom technique, and apparatus of the present invention pass through H
Steel web opens double groove, does not stay root face, stays gap 4-5mm, and double arc bottom weldings do not have to gouge back chipping, substantially increase weldering
Quality, efficiency are connect, production cost is reduced.The present invention can effectively solve the problems in background technique.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of cut deal T-type twin arc welding takes bottom technique, and twin arc welding takes bottom technique step are as follows:
(1) H steel web blanking, full penetration weld of groove surplus 3mm-5mm, H the steel web greater than 16mm open two-sided K shape slope
Mouthful, groove width 16mm-18mm, groove does not stay root face, stays the gap 4mm-6mm, with the pad of the component non-uniform thickness of batch
Plate.
(2) cutting within the scope of each 50mm in full penetration weld position two sides among the shape groove position H steel web K and the edge of a wing
The polishing of the impurity such as slag, oxide skin, iron rust is clean, is in metallochrome.
(3) when the H steel web after polishing carries out double arc bottom weldings, it is 4mm-6mm that full penetration weld group stays gap immediately,
Gap, tack weld position within backing plate 10mm, tack welding spacing are controlled using the backing plate of 1 piece of 5mm every 500mm-600mm
It is consistent with liner space, it is spaced 500mm-600mm, tack weld length 50mm, H steel web plate section will put full penetration weldering to group immediately
Stitch shrinkage 3mm-5mm.
(4) double arc bottom weldings use horizontal position welding, carry out simultaneously in component two sides, and preceding when double arc bottom weldings adopt
With leftward welding (open arc), below using rightward welding (dark arc), double arc spacing control the position of 10mm < S < 30mm.
(5) component is laid flat after the completion of double arc bottom weldings and is filled, filling extremely has more 3mm-5mm with full penetration weld
When surplus, backing plate is excluded using carbon arc air gouging, extends 30mm-50mm to backing plate both sides when excluding more, backing plate again will after excluding
Full penetration weld is filled and led up.
Further, H steel web groove face is polished using sanding machine in the step (2), and flange plate is beaten using belt sander
Mill.
Further, before step (4) leftward welding is welded on, after rightward welding is welded on, the weldering of leftward welding in bottoming
Silk position extends through two sides groove clamp length > 1mm, and the welding wire position of rightward welding is on the clamp of two sides groove face.
Further, double arc bottom weldings carry out double arc bottom weldings from backing plate and tack welding position to both ends.
Further, double arc bottom welding parameters are as follows in the step (4): wherein welding current 290- in leftward welding
310A, weldingvoltage 28-30V, welding speed 25-40cm/min, gas stream are no more than 25L/min, welding current in rightward welding
300-340A, weldingvoltage 31-35V, welding speed 25-40cm/min, gas stream are no more than 25L/min.
Further, the double arc bottom welding parameters filled in the step (5) are as follows: welding current 340-370A, weldering
It connects voltage 36-39V, welding 25~40cm/min of speed, gas stream and is no more than 25L/min.
The utility model has the advantages that not having to gouge back chipping using double arc bottom weldings, substantially increasing welding quality, efficiency, reduce
Production cost.
Detailed description of the invention
Fig. 1 is full penetration groove type figure of the present invention.
Fig. 2 is H steel web resistance figure of the present invention.
Fig. 3 is leftward welding of the present invention and rightward welding schematic diagram.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of cut deal T-type twin arc welding takes bottom technique, and twin arc welding takes bottom technique step are as follows:
(1) H steel web blanking, full penetration weld of groove surplus 3mm-5mm, H the steel web greater than 16mm open two-sided K shape slope
Mouthful, groove width 16mm-18mm, groove does not stay root face, stays the gap 4mm-6mm, with the pad of the component non-uniform thickness of batch
Plate.
(2) cutting within the scope of each 50mm in full penetration weld position two sides among the shape groove position H steel web K and the edge of a wing
The polishing of the impurity such as slag, oxide skin, iron rust is clean, is in metallochrome.
(3) when the H steel web after polishing carries out double arc bottom weldings, it is 4mm-6mm that full penetration weld group stays gap immediately,
Gap, tack weld position within backing plate 10mm, tack welding spacing are controlled using the backing plate of 1 piece of 5mm every 500mm-600mm
It is consistent with liner space, it is spaced 500mm-600mm, tack weld length 50mm, H steel web plate section will put full penetration weldering to group immediately
Stitch shrinkage 3mm-5mm.
(4) double arc bottom weldings use horizontal position welding, carry out simultaneously in component two sides, and preceding when double arc bottom weldings adopt
With leftward welding (open arc), below using rightward welding (dark arc), double arc spacing control the position of 10mm < S < 30mm.
(5) component is laid flat after the completion of double arc bottom weldings and is filled, filling extremely has more 3mm-5mm with full penetration weld
When surplus, backing plate is excluded using carbon arc air gouging, extends 30mm-50mm to backing plate both sides when excluding more, backing plate again will after excluding
Full penetration weld is filled and led up.
Wherein, H steel web groove face is polished using sanding machine in the step (2), and flange plate is polished using belt sander.
Wherein, before step (4) leftward welding is welded on, after rightward welding is welded on, the welding wire position of leftward welding in bottoming
It sets and extends through two sides groove clamp length > 1mm, the welding wire position of rightward welding is on the clamp of two sides groove face.
Wherein, double arc bottom weldings carry out double arc bottom weldings from backing plate and tack welding position to both ends.
Wherein, double arc bottom welding parameters are as follows in the step (4): wherein welding current 290-310A in leftward welding,
Weldingvoltage 28-30V, welding speed 25-40cm/min, gas stream are no more than 25L/min, welding current 300- in rightward welding
340A, weldingvoltage 31-35V, welding speed 25-40cm/min, gas stream are no more than 25L/min.
Wherein, the double arc bottom welding parameters filled in the step (5) are as follows: welding current 340-370A, welding electricity
36-39V, welding 25~40cm/min of speed, gas stream is pressed to be no more than 25L/min.
Embodiment one
(1) H steel web blanking, full penetration weld of groove surplus 3mm-5mm, H the steel web greater than 16mm open two-sided K shape slope
Mouthful, groove width 16mm-18mm, groove does not stay root face, stays the gap 4mm-6mm, with the pad of the component non-uniform thickness of batch
Plate.
(2) cutting within the scope of each 50mm in full penetration weld position two sides among the shape groove position H steel web K and the edge of a wing
The polishing of the impurity such as slag, oxide skin, iron rust is clean, is in metallochrome.
(3) when the H steel web after polishing carries out double arc bottom weldings, it is 4.5mm that full penetration weld group stays gap immediately, often
Gap is controlled using the backing plate of 1 piece of 5mm every 500mm-600mm, tack weld position within backing plate 10mm, tack welding spacing with
Liner space is consistent, is spaced 500mm-600mm, tack weld length 50mm, H steel web plate section will put full penetration weld to group immediately
Shrinkage 3.5mm.
(4) double arc bottom weldings use horizontal position welding, carry out simultaneously in component two sides, and preceding when double arc bottom weldings adopt
With leftward welding (open arc), below using rightward welding (dark arc), double arc spacing control the position of 10mm < S < 30mm.
(5) component is laid flat after the completion of double arc bottom weldings and is filled, filling extremely has more 3mm-5mm with full penetration weld
When surplus, backing plate is excluded using carbon arc air gouging, extends 30mm-50mm to backing plate both sides when excluding more, backing plate again will after excluding
Full penetration weld is filled and led up.
Wherein, H steel web groove face is polished using sanding machine in the step (2), and flange plate is polished using belt sander.
Wherein, before step (4) leftward welding is welded on, after rightward welding is welded on, the welding wire position of leftward welding in bottoming
It sets and extends through two sides groove clamp length > 1mm, the welding wire position of rightward welding is on the clamp of two sides groove face.
Wherein, double arc bottom weldings carry out double arc bottom weldings from backing plate and tack welding position to both ends.
Wherein, double arc bottom welding parameters are as follows in the step (4): wherein welding current 290-310A in leftward welding,
Weldingvoltage 28-30V, welding speed 25-40cm/min, gas stream are no more than 25L/min, welding current 300- in rightward welding
340A, weldingvoltage 31-35V, welding speed 25-40cm/min, gas stream are no more than 25L/min.
Wherein, the double arc bottom welding parameters filled in the step (5) are as follows: welding current 340-370A, welding electricity
36-39V, welding 25~40cm/min of speed, gas stream is pressed to be no more than 25L/min.
Embodiment two
(1) H steel web blanking, full penetration weld of groove surplus 3mm-5mm, H the steel web greater than 16mm open two-sided K shape slope
Mouthful, groove width 16mm-18mm, groove does not stay root face, stays the gap 4mm-6mm, with the pad of the component non-uniform thickness of batch
Plate.
(2) cutting within the scope of each 50mm in full penetration weld position two sides among the shape groove position H steel web K and the edge of a wing
The polishing of the impurity such as slag, oxide skin, iron rust is clean, is in metallochrome.
(3) when the H steel web after polishing carries out double arc bottom weldings, it is 5mm that full penetration weld group stays gap immediately, every
500mm-600mm controls gap, tack weld position within backing plate 10mm, tack welding spacing and pad using the backing plate of 1 piece of 5mm
Plate spacing is consistent, is spaced 500mm-600mm, tack weld length 50mm, H steel web plate section will put full penetration weld receipts to group immediately
Contracting amount 3mm-5mm.
(4) double arc bottom weldings use horizontal position welding, carry out simultaneously in component two sides, and preceding when double arc bottom weldings adopt
With leftward welding (open arc), below using rightward welding (dark arc), double arc spacing control the position of 10mm < S < 30mm.
(5) component is laid flat after the completion of double arc bottom weldings and is filled, filling extremely has more 3mm-5mm with full penetration weld
When surplus, backing plate is excluded using carbon arc air gouging, extends 30mm-50mm to backing plate both sides when excluding more, backing plate again will after excluding
Full penetration weld is filled and led up.
Wherein, H steel web groove face is polished using sanding machine in the step (2), and flange plate is polished using belt sander.
Wherein, before step (4) leftward welding is welded on, after rightward welding is welded on, the welding wire position of leftward welding in bottoming
It sets and extends through two sides groove clamp length > 1mm, the welding wire position of rightward welding is on the clamp of two sides groove face.
Wherein, double arc bottom weldings carry out double arc bottom weldings from backing plate and tack welding position to both ends.
Wherein, double arc bottom welding parameters are as follows in the step (4): wherein welding current 290-310A in leftward welding,
Weldingvoltage 28-30V, welding speed 25-40cm/min, gas stream are no more than 25L/min, welding current 300- in rightward welding
340A, weldingvoltage 31-35V, welding speed 25-40cm/min, gas stream are no more than 25L/min.
Wherein, the double arc bottom welding parameters filled in the step (5) are as follows: welding current 340-370A, welding electricity
36-39V, welding 25~40cm/min of speed, gas stream is pressed to be no more than 25L/min.
By verifying for a long time, postwelding qualification rate is up to 98% or more, my company is in full penetration technique when this technique
The important breakthrough of upper acquisition substantially increases welding quality, efficiency, reduces production cost, belongs to great process innovation, simultaneously
The top standard of domestic steel construction industry is reached.
It is above that certain exemplary embodiments of the invention are only described by way of explanation, undoubtedly, for ability
The those of ordinary skill in domain without departing from the spirit and scope of the present invention can be with a variety of different modes to institute
The embodiment of description is modified.Therefore, above-mentioned attached drawing and description are regarded as illustrative in nature, and should not be construed as to the present invention
The limitation of claims.
Claims (6)
1. a kind of cut deal T-type twin arc welding takes bottom technique, which is characterized in that its twin arc welding takes bottom technique step are as follows:
(1) H steel web blanking, full penetration weld of groove surplus 3mm-5mm, H the steel web greater than 16mm open two-sided K shape groove,
Groove width is 16mm-18mm, and groove does not stay root face, stays the gap 4mm-6mm, with the backing plate of the component non-uniform thickness of batch.
(2) slag, oxygen are cut within the scope of each 50mm in full penetration weld position two sides among the shape groove position H steel web K and the edge of a wing
It is clean to change the polishing of the impurity such as skin, iron rust, is in metallochrome.
(3) when the H steel web after polishing carries out double arc bottom weldings, it is 4mm-6mm that full penetration weld group stays gap immediately, every
500mm-600mm controls gap, tack weld position within backing plate 10mm, tack welding spacing and pad using the backing plate of 1 piece of 5mm
Plate spacing is consistent, is spaced 500mm-600mm, tack weld length 50mm, H steel web plate section will put full penetration weld receipts to group immediately
Contracting amount 3mm-5mm.
(4) double arc bottom weldings use horizontal position welding, carry out simultaneously in component two sides, and preceding using left when double arc bottom weldings
Welding method (open arc), below using rightward welding (dark arc), the position of double arc spacing control 10mm < S < 30mm.
(5) component is laid flat after the completion of double arc bottom weldings and is filled, filling extremely has more 3mm-5mm surplus with full penetration weld
When, backing plate is excluded using carbon arc air gouging, extends 30mm-50mm to backing plate both sides when excluding more, backing plate exclude after again by fine melt
Saturating weld seam is filled and led up.
2. a kind of cut deal T-type twin arc welding according to claim 1 takes bottom technique, it is characterised in that: the step (2)
Middle H steel web groove face is polished using sanding machine, and flange plate is polished using belt sander.
3. a kind of cut deal T-type twin arc welding according to claim 1 takes bottom technique, it is characterised in that: the step (4)
Before leftward welding is welded on, after rightward welding is welded on, in bottoming, the welding wire position of leftward welding extends through two sides groove clamp length >
1mm, the welding wire position of rightward welding is on the clamp of two sides groove face.
4. a kind of cut deal T-type twin arc welding according to claim 3 takes bottom technique, it is characterised in that: double arcs are beaten
Back welding connects from backing plate and tack welding position to both ends and carries out double arc bottom weldings.
5. a kind of cut deal T-type twin arc welding according to claim 1 takes bottom technique, it is characterised in that: the step (4)
In double arc bottom welding parameters it is as follows: wherein welding current 290-310A, weldingvoltage 28-30V, welding speed 25- in leftward welding
40cm/min, gas stream are no more than 25L/min, welding current 300-340A, weldingvoltage 31-35V, welding speed in rightward welding
25-40cm/min, gas stream are no more than 25L/min.
6. a kind of cut deal T-type twin arc welding according to claim 1 takes bottom technique, it is characterised in that: the step (5)
Double arc bottom welding parameters of middle filling are as follows: welding current 340-370A, weldingvoltage 36-39V, welding 25~40cm/ of speed
Min, gas stream are no more than 25L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811358726.7A CN109317783B (en) | 2018-11-15 | 2018-11-15 | T-shaped double-arc welding bottoming process for medium plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811358726.7A CN109317783B (en) | 2018-11-15 | 2018-11-15 | T-shaped double-arc welding bottoming process for medium plate |
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| Publication Number | Publication Date |
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| CN109317783A true CN109317783A (en) | 2019-02-12 |
| CN109317783B CN109317783B (en) | 2020-12-29 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109746544A (en) * | 2019-03-19 | 2019-05-14 | 江阴市光科光电精密设备有限公司 | A kind of welding procedure of ultrahigh vacuum stainless steel chamber |
| CN110587165A (en) * | 2019-09-16 | 2019-12-20 | 辽宁石油化工大学 | Composite welding process method for aluminum and aluminum alloy section |
| CN111037224A (en) * | 2019-12-18 | 2020-04-21 | 安徽百甲科技有限责任公司 | Welding method for carbon-free gouging back chipping of thick plate fusion penetration welded H-shaped steel |
| CN113843592A (en) * | 2021-10-15 | 2021-12-28 | 中建钢构工程有限公司 | Double-gun backing welding method |
| CN114192944A (en) * | 2021-12-28 | 2022-03-18 | 江苏新蓝天钢结构有限公司 | Full penetration back-gouging-free I-shaped steel welding method introducing welding predeformation |
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| CN104874901A (en) * | 2015-04-14 | 2015-09-02 | 招商局重工（江苏）有限公司 | Double-side double-arc synchronous butt welding method of medium-thickness plate of sliding box of self-elevating drilling platform |
| CN106735772A (en) * | 2016-12-29 | 2017-05-31 | 吉林大学 | The device and method of the double arc automatic MIG weldering welding of aluminum alloy two-side |
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| CN1603045A (en) * | 2004-11-08 | 2005-04-06 | 渤海船舶重工有限责任公司 | Double sides double arc welding method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109746544A (en) * | 2019-03-19 | 2019-05-14 | 江阴市光科光电精密设备有限公司 | A kind of welding procedure of ultrahigh vacuum stainless steel chamber |
| CN110587165A (en) * | 2019-09-16 | 2019-12-20 | 辽宁石油化工大学 | Composite welding process method for aluminum and aluminum alloy section |
| CN110587165B (en) * | 2019-09-16 | 2021-02-05 | 辽宁石油化工大学 | Composite welding method for aluminum and aluminum alloy section |
| CN111037224A (en) * | 2019-12-18 | 2020-04-21 | 安徽百甲科技有限责任公司 | Welding method for carbon-free gouging back chipping of thick plate fusion penetration welded H-shaped steel |
| CN111037224B (en) * | 2019-12-18 | 2021-11-16 | 安徽百甲科技有限责任公司 | Welding method for carbon-free gouging back chipping of thick plate fusion penetration welded H-shaped steel |
| CN113843592A (en) * | 2021-10-15 | 2021-12-28 | 中建钢构工程有限公司 | Double-gun backing welding method |
| CN113843592B (en) * | 2021-10-15 | 2024-01-12 | 中建钢构工程有限公司 | Double-gun bottoming welding method |
| CN114192944A (en) * | 2021-12-28 | 2022-03-18 | 江苏新蓝天钢结构有限公司 | Full penetration back-gouging-free I-shaped steel welding method introducing welding predeformation |
| CN114192944B (en) * | 2021-12-28 | 2023-09-22 | 江苏新蓝天钢结构有限公司 | Full penetration back-gouging-free I-steel welding method introducing welding pre-deformation |
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|---|---|
| CN109317783B (en) | 2020-12-29 |
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