CN106180983A - A kind of welding method of U rib - Google Patents
A kind of welding method of U rib Download PDFInfo
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- CN106180983A CN106180983A CN201610696685.7A CN201610696685A CN106180983A CN 106180983 A CN106180983 A CN 106180983A CN 201610696685 A CN201610696685 A CN 201610696685A CN 106180983 A CN106180983 A CN 106180983A
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Abstract
The invention discloses the welding method of a kind of U rib, first, inside U rib, the angle seam crossing of the internal both sides of welding U rib；Then, outside U rib, the angle seam crossing of welding U rib both sides external.This welding method, construction features for U rib, use brand-new welding manner, first weld inside U rib, then weld from the outside of U rib, inside and outside from, U rib is welded, it is only capable of with prior art compared with the outside single-sided welding, substantially increasing the penetration rate of U rib weld seam, improve the welding quality of U rib weld seam, avoid the occurrence of the defects such as lack of penetration, incomplete fusion, depth of penetration are inadequate, make U rib and bridge welding be connected into steadiness higher U rib unit.
Description
Technical field
The present invention relates to science of bridge building field, in particular it relates to the welding method of a kind of U rib.
Background technology
Steel box-girder is the important component part in bridge bearing structure, is mainly used in providing support, it is to avoid bridge deformation.Steel
Box beam generally comprises the structure such as top board, base plate, and described top board and base plate are typically welded by U rib and base plate.
At present, the angle welding between the U rib of steel box-girder and base plate all uses outside single-sided welding.When outside weldings, in order to
Reach the depth of penetration that design requires, generally bevel or use big electric current to weld outside U rib.Big electric current is used to weld
When connecing, the degree of stability of electric current, voltage and speed of welding in welding process directly affects welding quality, it is difficult to ensure welding matter
Amount；Outside U rib during bevel, process and be difficult to consistent with groove size when assembling, root face, gap, also can directly affect weldering
Connect quality.Above-mentioned welding manner often causes that to there is lack of penetration, incomplete fusion, overlap, depth of penetration inside U rib undesirable
Etc. various defects so that Kekelé structure count defect easily occurs inside U rib, has a strong impact on the fatigue strength of weld seam.
In engineer applied, how can either avoid the weld defect of U rib, the welding quality of weld seam can be improved again, be
Those skilled in the art are badly in need of solving the technical problem that at present.
Summary of the invention
It is an object of the invention to provide the welding method of a kind of U rib, this welding method welds U inside and outside U rib
Rib, makes weld seam have higher penetration rate, it is to avoid the weld defect of U rib, improves the welding quality of the weld seam of U rib.
In order to realize above-mentioned technical purpose, the invention provides the welding method of a kind of U rib, comprise the following steps:
S1, inside U rib, the angle seam crossing of the internal both sides of welding U rib；
S2, outside U rib, the angle seam crossing of welding U rib both sides external.
Optionally, the welding manner in step S1 uses gas shielded arc welding or submerged-arc welding；Welding manner in step S2
Use gas shielded arc welding or submerged-arc welding.
Optionally, the welding step of gas shielded arc welding includes:
S31, at the outside bevel of U rib；
S32, location U rib and base plate, reserved fit-up gap；
S33, welds fit-up gap and groove.
Optionally, the welding step of gas shielded arc welding farther includes:
S311, opens the groove of 30 °-50 ° outside U rib, the root face of reserved 1.0-3.0mm；
S321, when location U rib and base plate, the fit-up gap of reserved 0-1.5mm；
S331, during welding, gage of wire is 1.0-3.2mm, and welding current is 150-550A, and weldingvoltage is 24-45V,
Speed of welding is 230-800mm/min.
Optionally, the welding step of gas shielded arc welding farther includes:
S312, opens the groove of 30 °-55 ° outside U rib, the root face of reserved 2.0-5.0mm；
S322, when location U rib and base plate, the fit-up gap of reserved 0-2.0mm；
S332, during welding, gage of wire is 1.0-3.2mm, and welding current is 150-550A, and weldingvoltage is 24-45V,
Speed of welding is 230-800mm/min.
Optionally, the welding step of gas shielded arc welding farther includes:
S313, U rib square groove；
S323, when location U rib and base plate, the fit-up gap of reserved 0-2.5mm；
S333, during welding, gage of wire is 1.0-3.2mm, and welding current is 150-550A, and weldingvoltage is 24-45V,
Speed of welding is 230-800mm/min.
Optionally, during welding, selecting solid welding wire, gage of wire is 1.0-1.6mm, and welding current is 150-400A, weldering
Connecing voltage is 24-38V, and speed of welding is 230-700mm/min, and protective gas is carbon dioxide or argon+titanium dioxide
Carbon mixed gas or argon+carbon dioxide+oxygen mixed gas or rich argon mixture gas, gas flow is 15-25L/
min。
Optionally, during welding, selecting flux-cored wire or metal core welding wire, gage of wire is 1.2-1.6mm, and welding current is
240-450A, weldingvoltage is 27-40V, and speed of welding is 300-800mm/min, and protective gas is carbon dioxide, gas
Flow is 15-30L/min.
Optionally, during welding, selecting self-protection flux-cored wire, gage of wire is 1.6-3.2mm, and welding current is 300-
550A, weldingvoltage is 30-45V, and speed of welding is 400-800mm/min.
Optionally, the welding step of submerged-arc welding includes:
S41, regulates welding current and weldingvoltage to preset value according to gage of wire；
S42, arranges wire feed rate and welding wire position；
S43, paving spills solder flux, starting the arc welding.
Optionally, during welding, gage of wire is 1.6-5.0mm, and welding current is 240-850A, and weldingvoltage is 24-
42V, speed of welding is 230-800mm/min, and solder flux is sintered flux or fysed flux.
The welding method of the U rib that the present invention provides, first, inside U rib, the angle seam crossing of the internal both sides of welding U rib；So
After, outside U rib, the angle seam crossing of welding U rib both sides external.
This welding method, for the construction features of U rib, uses brand-new welding manner, first welds inside U rib,
Outside from U rib is welded again, from inside and outside U rib is welded, be only capable of from outside single-sided welding phase with prior art
Ratio, substantially increases the penetration rate of U rib weld seam, improves the welding quality of U rib weld seam, it is to avoid lack of penetration, incomplete fusion, molten occur
The defects such as the saturating degree of depth is inadequate, make U rib and bridge welding be connected into steadiness higher U rib unit.
Further, the welding manner in step S1 can use gas shielded arc welding or submerged-arc welding；Weldering in step S2
The mode of connecing can also use gas shielded arc welding or submerged-arc welding.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, with following tool
Body embodiment is used for explaining the present invention together, but is not intended that limitation of the present invention.
The flow chart of the welding method that Fig. 1 provides for the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in detail.It should be appreciated that this place is retouched
The detailed description of the invention stated is merely to illustrate and explains the present invention, is not limited to the present invention.
Refer to the flow chart of the welding method that Fig. 1, Fig. 1 provide for the present invention.
In a kind of specific embodiment, the invention provides the welding method of a kind of U rib, comprise the following steps:
Step S1, inside U rib, the angle seam crossing of the internal both sides of welding U rib；
Step S2, outside U rib, the angle seam crossing of welding U rib both sides external.
This welding method, for the construction features of U rib, uses brand-new welding manner, first welds inside U rib,
Outside from U rib is welded again, from inside and outside U rib is welded, be only capable of from the outside single-sided welding of U rib with prior art
Compare, substantially increase the penetration rate of U rib weld seam, improve the welding quality of U rib weld seam, it is to avoid occur lack of penetration, incomplete fusion,
The defects such as depth of penetration is inadequate, make U rib and bridge welding be connected into steadiness higher U rib unit.
This welding method, for the construction features of U rib, have employed a kind of brand-new welding manner, both can guarantee that the knot of U rib
Structure intensity, can guarantee that again welding quality, it is to avoid the weld defect of U rib, improves the welding quality of weld seam, improves U rib unit
Fatigue resistance, increases the service life.
Further in specific embodiment, the welding manner in step S1 uses gas shielded arc welding or submerged-arc welding；Step
Welding manner in rapid S2 uses gas shielded arc welding or submerged-arc welding.
In welding process, all can use the welding of gas shielded arc welding or submerged-arc welding when interior welds and outside weldings
Mode, can all use the welding manner of gas shielded arc welding, it is also possible to all use the welding manner of submerged-arc welding in both sides in both sides,
Can also use the welding manner of gas shielded arc welding in side, opposite side uses the welding manner of submerged-arc welding.
U rib inner space is less, and the difficulty entering U rib interior welds is relatively big, and gas shielded arc welding, compared with submerged-arc welding, welds
Equipment and welding process are relatively simple, it is advantageous to mode be to use the welding manner of gas shielded arc welding when U rib interior welds.
One preferred embodiment in, the welding step of gas shielded arc welding includes:
Step S31, at the outside bevel of U rib；
Step S32, location U rib and base plate, reserved fit-up gap；
Step S33, welds fit-up gap and groove.
In order to ensure the depth of penetration of U rib weld seam after welding, can before welding, at the bottom finished edge of U rib, and at U
When rib and base plate location, reserved certain fit-up gap, so when welding, easily reach satisfactory penetration rate.Welding
Time, it is possible to reach certain penetration rate, preferably reach the penetration rate of more than 80%, most preferably reach 100% penetration.
When all using gas shielded arc welding in step S1 neutralization procedure S2, the above-mentioned steps in the two step can merge,
Only bottom U rib, open a groove, carry out one-time positioning assembling, carry out welding the most respectively inside and outside U rib.
In the first detailed description of the invention, the welding step of gas shielded arc welding farther includes:
Step S311, opens the groove of 30 °-50 ° outside U rib, the root face of reserved 1.0-3.0mm；
Step S321, when location U rib and base plate, the fit-up gap of reserved 0-1.5mm；
Step S331, during welding, gage of wire is 1.0-3.2mm, and welding current is 150-550A, and weldingvoltage is 24-
45V, speed of welding is 230-800mm/min.
Bottom U rib during bevel, reserved certain root face, root face stay less time, welding process is easier melt
Thoroughly, the root face of reserved 1.0-3.0mm, open the groove of 30 °-50 °, and during the fit-up gap of reserved 0-1.5mm, in welding process,
It is easier to realize 100% penetration.
In the second specific embodiment, the welding step of gas shielded arc welding farther includes:
Step S312, opens the groove of 30 °-55 ° outside U rib, the root face of reserved 2.0-5.0mm；
Step S322, when location U rib and base plate, the fit-up gap of reserved 0-2.0mm；
Step S332, during welding, gage of wire is 1.0-3.2mm, and welding current is 150-550A, and weldingvoltage is 24-
45V, speed of welding is 230-800mm/min.
The root face of reserved 1.0-3.0mm, opens the groove of 30 °-50 °, and during the fit-up gap of reserved 0-1.5mm, welds
Cheng Zhong, is easier to realize the penetration rate of 50%-80%.
In the third specific embodiment, the welding step of gas shielded arc welding farther includes:
Step S313, U rib square groove；
Step S323, when location U rib and base plate, the fit-up gap of reserved 0-2.5mm；
Step S333, during welding, gage of wire is 1.0-3.2mm, and welding current is 150-550A, and weldingvoltage is 24-
45V, speed of welding is 230-800mm/min.
The bottom of U rib can also square groove, directly assemble, during assembling between U rib and base plate reserved one
Fixed gap, the most just welds.
In above-mentioned each welding process, can according to the type of welding wire and gage of wire, select welding current, weldingvoltage and
Speed of welding, so that welding reaches optimum efficiency.
In above-mentioned each specific embodiment, in the first further embodiment, during welding, select solid welding wire,
Gage of wire is 1.0-1.6mm, and welding current is 150-400A, and weldingvoltage is 24-38V, and speed of welding is 230-700mm/
Min, protective gas is carbon dioxide or argon+carbon dioxide gas mixture or argon+carbon dioxide+oxygen mixes
Closing gas or rich argon mixture gas, gas flow is 15-25L/min.
The diameter dimension of solid welding wire is generally 1.0mm, 1.2mm, 1.4mm, 1.6mm, when gage of wire is less, selection
Welding current, weldingvoltage and speed of welding are the most relatively small, and design parameter can be found in following table.
In above-mentioned each specific embodiment, in the second further embodiment, during welding, select flux-cored wire or
Metal core welding wire, gage of wire is 1.2-1.6mm, and welding current is 240-450A, and weldingvoltage is 27-40V, and speed of welding is
300-800mm/min, protective gas is carbon dioxide, and gas flow is 15-30L/min.
The diameter dimension of flux-cored wire is generally 1.2mm, 1.4mm, 1.6mm, and the diameter dimension of metal core welding wire is general also
For the diameter dimension of 1.2mm, 1.4mm, 1.6mm, flux-cored wire and metal core welding wire identical time, corresponding welding current, welding
Voltage and speed of welding are the most essentially identical, and design parameter can be found in following table.
In above-mentioned each specific embodiment, in the third further embodiment, during welding, select self-shield medicated core
Welding wire, gage of wire is 1.6-3.2mm, and welding current is 300-550A, and weldingvoltage is 30-45V, and speed of welding is 400-
800mm/min。
The diameter dimension of self-protection flux-cored wire is generally 1.6-2.0mm, 2.4-3.2mm, uses self-protection flux-cored wire
Time, protective gas need not be used, concrete, select corresponding welding current, weldingvoltage and welding also according to different diameters
Speed, design parameter can be found in following table.
The second preferred embodiment in, the welding step of submerged-arc welding includes:
Step S41, regulates welding current and weldingvoltage to preset value according to gage of wire；
Step S42, arranges wire feed rate and welding wire position；
Step S43, paving spills solder flux, starting the arc welding.
The welding quality stable of submerged-arc welding, welding productivity are high, less without arc light and flue dust.
Further in specific embodiment, during welding, gage of wire is 1.6-5.0mm, and welding current is 240-85-A,
Weldingvoltage is 24-42V, and speed of welding is 230-800mm/min, and solder flux is sintered flux or fysed flux.
In submerged-arc welding, the diameter of welding wire is generally 1.6mm, 2.0mm, 2.4mm, 3.2mm, 4.0mm, 5.0mm, gage of wire
Time less, the welding current of selection, weldingvoltage and speed of welding are the most relatively small, and concrete parameter can be found in following table.
It is understood that the principle that is intended to be merely illustrative of the present of embodiment of above and the exemplary enforcement that uses
Mode, but the invention is not limited in this.For those skilled in the art, in the essence without departing from the present invention
In the case of god and essence, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (10)
1. the welding method of a U rib, it is characterised in that comprise the following steps:
S1, inside U rib, the angle seam crossing of the internal both sides of welding U rib；
S2, outside U rib, the angle seam crossing of welding U rib both sides external.
2. the welding method of U rib as claimed in claim 1, it is characterised in that the welding manner in step S1 uses gas to protect
Protect weldering or submerged-arc welding；Welding manner in step S2 uses gas shielded arc welding or submerged-arc welding.
3. the welding method of U rib as claimed in claim 2, it is characterised in that the welding step of gas shielded arc welding includes:
S31, at the outside bevel of U rib；
S32, location U rib and base plate, reserved fit-up gap；
S33, welds fit-up gap and groove.
4. the welding method of U rib as claimed in claim 3, it is characterised in that the welding step of gas shielded arc welding is wrapped further
Include:
S311, opens the groove of 30 °-50 ° outside U rib, the root face of reserved 1.0-3.0mm；
S321, when location U rib and base plate, the fit-up gap of reserved 0-1.5mm；
S331, during welding, gage of wire is 1.0-3.2mm, and welding current is 150-550A, and weldingvoltage is 24-45V, welding
Speed is 230-800mm/min.
5. the welding method of U rib as claimed in claim 3, it is characterised in that the welding step of gas shielded arc welding is wrapped further
Include:
S312, opens the groove of 30 °-55 ° outside U rib, the root face of reserved 2.0-5.0mm；
S322, when location U rib and base plate, the fit-up gap of reserved 0-2.0mm；
S332, during welding, gage of wire is 1.0-3.2mm, and welding current is 150-550A, and weldingvoltage is 24-45V, welding
Speed is 230-800mm/min.
6. the welding method of U rib as claimed in claim 3, it is characterised in that the welding step of gas shielded arc welding is wrapped further
Include:
S313, U rib square groove；
S323, when location U rib and base plate, the fit-up gap of reserved 0-2.5mm；
S333, during welding, gage of wire is 1.0-3.2mm, and welding current is 150-550A, and weldingvoltage is 24-45V, welding
Speed is 230-800mm/min.
7. the welding method of the U rib as described in any one of claim 4 to 6, it is characterised in that during welding, selects solid welding wire,
Gage of wire is 1.0-1.6mm, and welding current is 150-400A, and weldingvoltage is 24-38V, and speed of welding is 230-700mm/
Min, protective gas is carbon dioxide or argon+carbon dioxide gas mixture or argon+carbon dioxide+oxygen mixes
Closing gas or rich argon mixture gas, gas flow is 15-25L/min.
8. the welding method of the U rib as described in any one of claim 4 to 6, it is characterised in that during welding, selects flux-cored wire
Or metal core welding wire, gage of wire is 1.2-1.6mm, and welding current is 240-450A, and weldingvoltage is 27-40V, speed of welding
For 300-800mm/min, protective gas is carbon dioxide, and gas flow is 15-30L/min.
9. the welding method of the U rib as described in any one of claim 4 to 6, it is characterised in that during welding, selects self-shield medicine
Core welding wire, gage of wire is 1.6-3.2mm, and welding current is 300-550A, and weldingvoltage is 30-45V, and speed of welding is 400-
800mm/min。
10. the welding method of U rib as claimed in claim 2, it is characterised in that the welding step of submerged-arc welding includes:
S41, regulates welding current and weldingvoltage to preset value according to gage of wire；
S42, arranges wire feed rate and welding wire position；
S43, paving spills solder flux, starting the arc welding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610696685.7A CN106180983A (en) | 2016-08-19 | 2016-08-19 | A kind of welding method of U rib |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610696685.7A CN106180983A (en) | 2016-08-19 | 2016-08-19 | A kind of welding method of U rib |
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Cited By (7)
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|---|---|---|---|---|
| CN106735727A (en) * | 2016-12-12 | 2017-05-31 | 上海振华重工(集团)股份有限公司 | The single track welding method of U-shaped floor |
| CN107584196A (en) * | 2017-09-14 | 2018-01-16 | 武汉天高熔接股份有限公司 | Long-lived Orthotropic Steel Bridge Deck is remained silent the welding procedure of rib |
| CN108436320A (en) * | 2018-05-28 | 2018-08-24 | 湖北天图桥梁技术研究有限公司 | A kind of U ribs and orthotropic plate unit and its welding manufacture method |
| CN109570707A (en) * | 2018-11-15 | 2019-04-05 | 中铁宝桥（扬州）有限公司 | A kind of Steel Bridge U rib plate block complete penetration welding method |
| CN109570708A (en) * | 2018-11-15 | 2019-04-05 | 中铁宝桥（扬州）有限公司 | A kind of orthotropic steel bridge deck U rib K-type connector complex welding method |
| CN114952103A (en) * | 2022-06-20 | 2022-08-30 | 广州文船重工有限公司 | Method for acquiring welding parameters of U-shaped rib |
| CN115401295A (en) * | 2022-10-10 | 2022-11-29 | 中交二航局结构工程有限公司 | Welding method for full penetration of weather-resistant steel U rib by double-sided welding |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735727A (en) * | 2016-12-12 | 2017-05-31 | 上海振华重工(集团)股份有限公司 | The single track welding method of U-shaped floor |
| CN107584196A (en) * | 2017-09-14 | 2018-01-16 | 武汉天高熔接股份有限公司 | Long-lived Orthotropic Steel Bridge Deck is remained silent the welding procedure of rib |
| CN108436320A (en) * | 2018-05-28 | 2018-08-24 | 湖北天图桥梁技术研究有限公司 | A kind of U ribs and orthotropic plate unit and its welding manufacture method |
| CN109570707A (en) * | 2018-11-15 | 2019-04-05 | 中铁宝桥（扬州）有限公司 | A kind of Steel Bridge U rib plate block complete penetration welding method |
| CN109570708A (en) * | 2018-11-15 | 2019-04-05 | 中铁宝桥（扬州）有限公司 | A kind of orthotropic steel bridge deck U rib K-type connector complex welding method |
| CN114952103A (en) * | 2022-06-20 | 2022-08-30 | 广州文船重工有限公司 | Method for acquiring welding parameters of U-shaped rib |
| CN114952103B (en) * | 2022-06-20 | 2023-12-19 | 广州文船重工有限公司 | U-rib welding parameter acquisition method |
| CN115401295A (en) * | 2022-10-10 | 2022-11-29 | 中交二航局结构工程有限公司 | Welding method for full penetration of weather-resistant steel U rib by double-sided welding |
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Application publication date: 20161207 |