CN108057941A - A kind of welding method of weathering steel stiff girder suspension bridge main longitudinal grider - Google Patents
A kind of welding method of weathering steel stiff girder suspension bridge main longitudinal grider Download PDFInfo
- Publication number
- CN108057941A CN108057941A CN201711390388.0A CN201711390388A CN108057941A CN 108057941 A CN108057941 A CN 108057941A CN 201711390388 A CN201711390388 A CN 201711390388A CN 108057941 A CN108057941 A CN 108057941A
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- welding
- plate
- main longitudinal
- top plate
- longitudinal grider
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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
- B23K9/16—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
- 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
- B23K31/022—Making profiled bars with soldered or welded 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
- B23K9/18—Submerged-arc welding
- B23K9/186—Submerged-arc welding making use of a consumable electrodes
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a kind of welding methods of weathering steel stiff girder suspension bridge main longitudinal grider, it is welded in the manufacture of weathering steel stiff girder suspension bridge main longitudinal grider work shape rod piece using a variety of weathering steel welding material specials, preheating is taken in welding process and interlayer temperature controls and the strictly measures such as orthopedic temperature of control heat, after welding, it may insure that weld metal zone mechanical property and weather resistance match with base material, its satisfaction is made to exempt from application requirement, being applied in combination for a variety of welding methods greatly improves work efficiency simultaneously, shortens the duration；Special groove type and welding sequence are taken between rod piece suspension centre pulling plate and girder top plate at penetration angle welding, not only can guarantee welding quality but also can guarantee rod piece suspension centre dimensional accuracy.
Description
Technical field
The invention belongs to bridge steel structure manufacturing field, especially a kind of welding of weathering steel stiff girder suspension bridge main longitudinal grider
Method.
Background technology
In the welding process of weathering steel stiff girder suspension bridge main longitudinal grider, it should ensure the sequence of construction of component, take into account again
Whole weatherability and welding efficiency, so needing using a variety of welding methods and welding material.Abdomen in the range of main longitudinal grider suspension centre
Plate is welded with top plate penetration, remaining position leading role's weld seam uses T-shaped angle welding, to take special groove type and welding sequence
To ensure that welding quality and appearance and size meet design requirement.
Chinese invention patent application（Publication No. CN105252122A）《A kind of bridge is high with Q345qENH~Q420qENH grades
The welding method of performance weathering steel》, and Chinese invention patent（Notification number CN102837105B）《A kind of bridge Q345qDNH
The welding method of weathering steel》, the General welding method and welding material of Weather-resistance bridge steel are all given, can guarantee weld seam and hot shadow
Ring the mechanical property and weatherability in area；But all do not have without the welding manufacture for specific Weather-resistance bridge steel structural rod piece wherein
There are the technical measures for needing to take in the specific method and welding manufacture for provide rod piece welding manufacture.
The content of the invention
It, can be in view of the above-mentioned problems, the present invention provides a kind of welding method of weathering steel stiff girder suspension bridge main longitudinal grider
Ensure that weld metal zone mechanical property and weather resistance match with base material, its satisfaction is made to exempt from application requirement, while a variety of welding
Being applied in combination for method greatly improves work efficiency, and shortens the duration.
A kind of welding method of weathering steel stiff girder suspension bridge main longitudinal grider, main longitudinal grider use Q345qENH weathering steels, including
Following steps：
Step 1：Welding top plate ribbed stiffener, welding diaphragm manhole flap, uniform thickness does not dock splicing weld seam to Welder's shape bar web plate；
Step 2：Bottom plate, web, top plate are formed into I-shaped main longitudinal grider, it will be between suspension centre pulling plate and top plate below penetration angle welding
Groove, extension penetration angle welding and transition groove welding are expired；
Step 3：Weld angle welding between web and top plate, bottom plate；
Step 4：Weld penetration angle welding the upper surface of groove between suspension centre pulling plate and top plate；
Step 5：It is symmetrically welded web plate joint plate, transverse stiffener and longitudinal stiffener angle welding；
Top plate ribbed stiffener in the step 1, partition plate manhole flap are welded using CO2 Welding Machines, use the trade mark for
The solid welding wire of CHW-55NHQ1, a diameter of Φ 1.2mm；Uniform thickness docking splicing weld seam does not use solid welding wire to work shape bar web plate
CO2 Welding Machines carry out bottoming welding, and submerged-arc welding is filled welds with cover welding, and CO2 gas shields half are certainly
Dynamic weldering uses the trade mark as CHW-55NHQ1, the solid welding wire of a diameter of Φ 1.2mm, submerged-arc welding use the trade mark for CHW-55NHQ3,
The welding wire of a diameter of Ф 4.0mm, with the solder flux that the trade mark is CHF105NHQ；
Groove, extension penetration angle welding and transition slope below penetration angle welding between suspension centre pulling plate and top plate in the step 2
Mouth is full using the weldering of flux-cored wire CO2 Welding Machines, uses medicine core of the trade mark for CHT71NHQ, a diameter of Φ 1.2mm
Welding wire；
Angle welding between web and top plate, bottom plate is welded in the step 3, accommodation welding is welded using Lincoln weld, using board
Number for CHW-55NHQ3, the welding wire of a diameter of Ф 4.0mm, with the trade mark be CHF105NHQ solder flux；
Penetration angle welding the upper surface of groove between suspension centre pulling plate and top plate is welded using gas shielded arc welding in the step 4, before welding
Gouge back chipping is simultaneously polished totally, uses the trade mark as CHT71NHQ, the flux-cored wire of a diameter of Φ 1.2mm；
Prosposition uses the trade mark as CHW-55NHQ1, the solid welding wire of a diameter of Φ 1.2mm in the step 5, and position use is faced upward in vertical position
The trade mark is CHT71NHQ, the flux-cored wire of a diameter of Φ 1.2mm.
Preferably, penetration angle welding uses transition groove type between suspension centre pulling plate and top plate, and upper level board is in integral node
Place's flame cuts combination bevel V groove, processes single side V-butt and two-sided change single side changeover portion in gusset plate end, ensures suspension centre scope
Inside fillet penetration simultaneously makes its even along being transitioned into T-shaped angle welding.
Preferably, the Lincoln weld must away from design end of welding bead 80mm beyond corbel back slab on rise, blow-out, corbel back slab
Material, thickness, groove type it is identical with welded part, using weather-resistant steel plate；Welding finishes, and corbel back slab gas cutting cuts off and polishes and cuts
Mouthful, forbid to be fallen with hammering.
Preferably, temperature between weld preheating temperature and road is controlled, is not required to preheat before the steel plate weldering of thickness≤24mm, it is warm between road
Degree control is at≤200 DEG C；The minimum preheating temperature of steel plate welding of 24 ~ 40mm of thickness of slab ＞ is 80 DEG C, between road temperature control 80 ~
200℃；The minimum preheating temperature of steel plate welding of 40 ~ 60mm of thickness of slab ＞ is 120 DEG C, and temperature control is at 120 ~ 200 DEG C between road.
Preferably, weathering steel component groups set temporary connection used in position also using weather-resistant steel plate, forbid using common knot
Structure steel is as temporary connection and corbel back slab.
When preferably, using flame straightening, weathering steel heating temperature is no more than 650 DEG C, forbids burning, should not be in same portion
Heating is repeated several times in position, before temperature is down to room temperature, must not hammer steel and water quenching；Temperature control is tackled during heating, is used
Far-infrared temperature measures temperature, does not allow using tempile.
The stiff girder suspension bridge main longitudinal grider that the present invention is manufactured using a variety of welding materials and welding method, before stringent control weldering
Temperature between preheating and road, selects appropriate welding condition, it is ensured that weld metal zone mechanical property and weather resistance make it full
Foot exempts from application requirement, while being applied in combination for a variety of welding methods greatly improves work efficiency, and shortens the duration；It is main vertical
Beam suspension centre scope endosternum and top plate penetration weld, to take special groove type and welding sequence ensure that welding quality and
Appearance and size meets design requirement.
Description of the drawings
Fig. 1 is the structure diagram of weathering steel stiff girder suspension bridge main longitudinal grider；
Fig. 2-7 is the transition groove type schematic diagram that penetration angle welding uses between suspension centre pulling plate and girder top plate.
Reference sign
1- main longitudinal grider top plates, 2- main longitudinal grider webs, 3- main longitudinal grider bottom plates,
4- main longitudinal grider web plate joints plate, horizontal stiffener and vertical ribbed stiffener, lifting lug reinforcing plate.
Specific embodiment
The technical solution in the embodiment of the present invention is clearly and completely described below in conjunction with the accompanying drawings, it is clear that described
Embodiment be only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ability
Domain those of ordinary skill's all other embodiments obtained, belong to the scope of protection of the invention.
Embodiment 1
The present invention discloses a kind of welding method of weathering steel stiff girder suspension bridge main longitudinal grider, and main longitudinal grider is weather-proof using Q345qENH
Steel includes the following steps：
Step 1：Welding top plate ribbed stiffener, welding diaphragm manhole flap is welded using CO2 Welding Machines, using the trade mark
For CHW-55NHQ1, the solid welding wire of a diameter of Φ 1.2mm；Uniform thickness does not dock splicing weld seam to Welder's shape bar web plate, uses
Solid welding wire CO2 Welding Machines carry out bottoming welding, and submerged-arc welding is filled welds with cover welding, CO2 gases
Protection semiautomatic welding uses the trade mark, and for CHW-55NHQ1, the solid welding wire of a diameter of Φ 1.2mm, submerged-arc welding uses the trade mark as CHW-
The welding wire of 55NHQ3, a diameter of Ф 4.0mm, with the solder flux that the trade mark is CHF105NHQ；
Step 2：Bottom plate, web, top plate are formed into I-shaped main longitudinal grider, as shown in Figure 1, by penetration angle between suspension centre pulling plate and top plate
Groove, extension penetration angle welding and transition groove are full using the weldering of flux-cored wire CO2 Welding Machines below weld seam,
Use the trade mark full for the flux-cored wire weldering of CHT71NHQ, a diameter of Φ 1.2mm；
Step 3：Weld angle welding between web and top plate, bottom plate, accommodation welding is welded using Lincoln weld, use the trade mark for
The welding wire of CHW-55NHQ3, a diameter of Ф 4.0mm, with the solder flux that the trade mark is CHF105NHQ；
Step 4：Penetration angle welding the upper surface of groove between suspension centre pulling plate and top plate is welded using gas shielded arc welding, gouge is clear before welding
Root is simultaneously polished totally, uses the trade mark as CHT71NHQ, the flux-cored wire of a diameter of Φ 1.2mm；
Step 5：Web plate joint plate, transverse stiffener and longitudinal stiffener angle welding are symmetrically welded, prosposition uses the trade mark as CHW-
The solid welding wire of 55NHQ1, a diameter of Φ 1.2mm, vertical position face upward position and use the trade mark as CHT71NHQ, the medicine of a diameter of Φ 1.2mm
Core welding wire.
Main longitudinal grider suspension centre scope endosternum is welded with top plate penetration, remaining position leading role's weld seam uses T-shaped angle welding, to adopt
Special groove type is taken to ensure that welding quality and appearance and size meet design requirement.In the present embodiment, suspension centre pulling plate with
Penetration angle welding uses transition groove type between top plate, and upper level board flame at integral node cuts combination bevel V groove, in gusset plate
End processes single side V-butt and two-sided change single side changeover portion, as illustrated in figs. 2-7, ensures suspension centre scope inside fillet penetration simultaneously
Make its even along being transitioned into T-shaped angle welding.Wherein a sections is top plate double groove area, and b sections become one-way slope for top plate double groove and make a slip of the tongue
Cross area, c sections are top plate one-way slope mouth region, and d section are suspension centre web from root face 2mm grooves area to T-shaped angle welding transition region.Rod piece is hung
Take special groove type and welding sequence at penetration angle welding between point pulling plate and girder top plate, not only can guarantee welding quality but also
It can guarantee rod piece suspension centre dimensional accuracy.
The Lincoln weld must rise on away from the corbel back slab beyond design end of welding bead 80mm, blow-out, the material of corbel back slab,
Thickness, groove type are identical with welded part, using weather-resistant steel plate；Welding finishes, and corbel back slab gas cutting cuts off and polishes notch, forbids
Fallen with hammering.
Temperature between weld preheating temperature and road is controlled, is not required to preheat before the steel plate weldering of thickness≤24mm, temperature controls between road
At≤200 DEG C；The minimum preheating temperature of steel plate welding of 24 ~ 40mm of thickness of slab ＞ is 80 DEG C, and temperature control is at 80 ~ 200 DEG C between road；Plate
The minimum preheating temperature of steel plate welding of thick 40 ~ 60mm of ＞ is 120 DEG C, and temperature control is at 120 ~ 200 DEG C between road.
Weathering steel component groups set temporary connection used in position also using weather-resistant steel plate, forbid using general structural steel conduct
Temporary connection and corbel back slab.
During using flame straightening, weathering steel heating temperature is no more than 650 DEG C, forbids burning, should not be multiple at same position
Repeat-heating before temperature is down to room temperature, must not hammer steel and water quenching；Temperature control is tackled during heating, using far infrared
Thermometer testing temperature does not allow using tempile.
Finally, it should also be noted that listed above is only a specific embodiment of the invention.Obviously, the present invention is unlimited
In above example, acceptable there are many deformations.Those of ordinary skill in the art can directly lead from present disclosure
All deformations for going out or associating, are considered as protection scope of the present invention.
Claims (6)
1. a kind of welding method of weathering steel stiff girder suspension bridge main longitudinal grider, main longitudinal grider uses Q345qENH weathering steels, feature
It is, includes the following steps：
Step 1：Welding top plate ribbed stiffener, welding diaphragm manhole flap, uniform thickness does not dock splicing weld seam to Welder's shape bar web plate；
Step 2：Bottom plate, web, top plate are formed into I-shaped main longitudinal grider, it will be between suspension centre pulling plate and top plate below penetration angle welding
Groove, extension penetration angle welding and transition groove welding are expired；
Step 3：Weld angle welding between web and top plate, bottom plate；
Step 4：Weld penetration angle welding the upper surface of groove between suspension centre pulling plate and top plate；
Step 5：It is symmetrically welded web plate joint plate, transverse stiffener and longitudinal stiffener angle welding；
Top plate ribbed stiffener in the step 1, partition plate manhole flap are welded using CO2 Welding Machines, use the trade mark for
The solid welding wire of CHW-55NHQ1, a diameter of Φ 1.2mm；Uniform thickness docking splicing weld seam does not use solid welding wire to work shape bar web plate
CO2 Welding Machines carry out bottoming welding, and submerged-arc welding is filled welds with cover welding, and CO2 gas shields half are certainly
Dynamic weldering uses the trade mark as CHW-55NHQ1, the solid welding wire of a diameter of Φ 1.2mm, submerged-arc welding use the trade mark for CHW-55NHQ3,
The welding wire of a diameter of Ф 4.0mm, with the solder flux that the trade mark is CHF105NHQ；
Groove, extension penetration angle welding and transition slope below penetration angle welding between suspension centre pulling plate and top plate in the step 2
Mouth is full using the weldering of flux-cored wire CO2 Welding Machines, uses medicine core of the trade mark for CHT71NHQ, a diameter of Φ 1.2mm
Welding wire；
Angle welding between web and top plate, bottom plate is welded in the step 3, accommodation welding is welded using Lincoln weld, using board
Number for CHW-55NHQ3, the welding wire of a diameter of Ф 4.0mm, with the trade mark be CHF105NHQ solder flux；
Penetration angle welding the upper surface of groove between suspension centre pulling plate and top plate is welded using gas shielded arc welding in the step 4, before welding
Gouge back chipping is simultaneously polished totally, uses the trade mark as CHT71NHQ, the flux-cored wire of a diameter of Φ 1.2mm；
Prosposition uses the trade mark as CHW-55NHQ1, the solid welding wire of a diameter of Φ 1.2mm in the step 5, and position use is faced upward in vertical position
The trade mark is CHT71NHQ, the flux-cored wire of a diameter of Φ 1.2mm.
2. the welding method of weathering steel stiff girder suspension bridge main longitudinal grider according to claim 1, which is characterized in that suspension centre is drawn
Penetration angle welding uses transition groove type between plate and top plate, and upper level board flame at integral node is cut combination bevel V groove, saved
Contact plate end processes single side V-butt and two-sided change single side changeover portion.
3. the welding method of weathering steel stiff girder suspension bridge main longitudinal grider according to claim 1, which is characterized in that described to bury
Arc automatic welding must rise on away from the corbel back slab beyond design end of welding bead 80mm, blow-out, the material of corbel back slab, thickness, groove type
It is identical with welded part, using weather-resistant steel plate；Welding finishes, and corbel back slab gas cutting cuts off and polishes notch.
4. the welding method of weathering steel stiff girder suspension bridge main longitudinal grider according to claim 1, which is characterized in that control weldering
Temperature between preceding preheating temperature and road is not required to preheat before the steel plate weldering of thickness≤24mm, and temperature control is at≤200 DEG C between road；Thickness of slab
The minimum preheating temperature of steel plate welding of 24 ~ 40mm of ＞ is 80 DEG C, and temperature control is at 80 ~ 200 DEG C between road；40 ~ 60mm's of thickness of slab ＞
The minimum preheating temperature of steel plate welding is 120 DEG C, and temperature control is at 120 ~ 200 DEG C between road.
5. the welding method of a kind of weathering steel stiff girder suspension bridge main longitudinal grider according to claim 1, which is characterized in that resistance to
Temporary connection used in waiting steel member assembling positioning also uses weather-resistant steel plate.
6. the welding method of a kind of weathering steel stiff girder suspension bridge main longitudinal grider according to claim 1, which is characterized in that adopt
During with flame straightening, weathering steel heating temperature is no more than 650 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711390388.0A CN108057941B (en) | 2017-12-21 | 2017-12-21 | Welding method for main longitudinal beam of weather-resistant steel stiffening beam suspension bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711390388.0A CN108057941B (en) | 2017-12-21 | 2017-12-21 | Welding method for main longitudinal beam of weather-resistant steel stiffening beam suspension bridge |
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| CN108057941A true CN108057941A (en) | 2018-05-22 |
| CN108057941B CN108057941B (en) | 2020-06-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604780A (en) * | 2018-12-19 | 2019-04-12 | 内蒙古北方重型汽车股份有限公司 | Welding method for Electric Motor Wheel mine car stringer assembly |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101513695A (en) * | 2009-04-03 | 2009-08-26 | 燕山大学 | Welding method of Q420qE grade ultra-low-carbon bainite steel for bridges |
| CN103084806A (en) * | 2013-01-18 | 2013-05-08 | 中铁宝桥（扬州）有限公司 | Large curve steel box grider manufacture method |
| CN103286427A (en) * | 2013-05-31 | 2013-09-11 | 中铁山桥集团有限公司 | Method for welding Q500qE ultralow-carbon bainite steel for bridge |
| CN104389267A (en) * | 2014-11-20 | 2015-03-04 | 中铁工程设计咨询集团有限公司 | Large-span suspension bridge reinforcement beam bridge face plate |
| CN105729063A (en) * | 2016-02-26 | 2016-07-06 | 江苏中铁山桥重工有限公司 | Manufacturing method of double-anchor box type external node chord member |
| CN106988201A (en) * | 2017-03-16 | 2017-07-28 | 中铁大桥勘测设计院集团有限公司 | A kind of double deck girder of suspension bridge structure |
| CN107201718A (en) * | 2016-03-16 | 2017-09-26 | 中铁十五局集团有限公司 | A kind of main longitudinal grider preparation method of steel structure bridge |
-
2017
- 2017-12-21 CN CN201711390388.0A patent/CN108057941B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101513695A (en) * | 2009-04-03 | 2009-08-26 | 燕山大学 | Welding method of Q420qE grade ultra-low-carbon bainite steel for bridges |
| CN103084806A (en) * | 2013-01-18 | 2013-05-08 | 中铁宝桥（扬州）有限公司 | Large curve steel box grider manufacture method |
| CN103286427A (en) * | 2013-05-31 | 2013-09-11 | 中铁山桥集团有限公司 | Method for welding Q500qE ultralow-carbon bainite steel for bridge |
| CN104389267A (en) * | 2014-11-20 | 2015-03-04 | 中铁工程设计咨询集团有限公司 | Large-span suspension bridge reinforcement beam bridge face plate |
| CN105729063A (en) * | 2016-02-26 | 2016-07-06 | 江苏中铁山桥重工有限公司 | Manufacturing method of double-anchor box type external node chord member |
| CN107201718A (en) * | 2016-03-16 | 2017-09-26 | 中铁十五局集团有限公司 | A kind of main longitudinal grider preparation method of steel structure bridge |
| CN106988201A (en) * | 2017-03-16 | 2017-07-28 | 中铁大桥勘测设计院集团有限公司 | A kind of double deck girder of suspension bridge structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604780A (en) * | 2018-12-19 | 2019-04-12 | 内蒙古北方重型汽车股份有限公司 | Welding method for Electric Motor Wheel mine car stringer assembly |
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| CN108057941B (en) | 2020-06-02 |
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Application publication date: 20180522 Assignee: China Railway Shanqiao (Nantong) Co.,Ltd. Assignor: CHINA RAILWAY SHANHAIGUAN BRIDGE GROUP Co.,Ltd. Contract record no.: X2023980033857 Denomination of invention: A Welding Method for the Main Longitudinal Beam of a Weather Resistant Steel Stiffened Beam Suspension Bridge Granted publication date: 20200602 License type: Common License Record date: 20230320 |
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