CN114713945A - Box-type component double-wire carbon dioxide gas protection bottoming welding method - Google Patents
Box-type component double-wire carbon dioxide gas protection bottoming welding method Download PDFInfo
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- CN114713945A CN114713945A CN202210282153.4A CN202210282153A CN114713945A CN 114713945 A CN114713945 A CN 114713945A CN 202210282153 A CN202210282153 A CN 202210282153A CN 114713945 A CN114713945 A CN 114713945A
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- welding
- box
- shaped member
- conveying roller
- component
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Links
- 238000003466 welding Methods 0.000 title claims abstract description 176
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 33
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 19
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 19
- 230000007306 turnover Effects 0.000 claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 230000004907 flux Effects 0.000 claims description 11
- 238000011084 recovery Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
-
- 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
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
-
- 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
- B23K9/32—Accessories
Abstract
The invention relates to a box-type component double-wire carbon dioxide gas protection backing welding method, which belongs to the technical field of box-type component welding processes and comprises the following operation steps: the first step is as follows: a pair of flange plates are arranged on the left side and the right side, an upper web plate is arranged between the upper flange plate and the lower flange plate, and column sealing plates are arranged at the front end and the rear end of each flange plate and each web plate to form a box-shaped component. The second step is that: the assembled box-type member is conveyed to the side edge of the movable welding assembly through a plurality of conveying roller ways, and then the box-type member is lifted and transversely moved to a supporting platform by a steel moving turnover machine to be placed. The third step: and the movable welding assembly completes the welding process of the welding seams at the two sides of the upper end of the box-shaped member. The fourth step: and the steel moving turnover machine finishes 180-degree turnover of the box-shaped component and then performs subsequent welding of a back-side welding seam. The fifth step: and after welding of four welding seams of the box-shaped member is completed, the box-shaped member is discharged through a conveying roller way. The device has the characteristics of compact structure, good operation stability and high machining precision.
Description
Technical Field
The invention relates to the technical field of box-type member welding processes, in particular to a box-type member double-wire carbon dioxide gas protection bottoming welding method.
Background
With the rapid development of the steel structure industry, more and more high-strength super-thick plates are used in large-span, super-high-rise and peculiar-model building engineering and heavy steel structure equipment with large load and high impact performance requirements, and higher requirements are undoubtedly provided for the welding technology and the welding quality of the structure in order to meet the design and use requirements of the structure.
The box-type component adopts a unilateral welding process in the daily welding process, and four main seams of the box-type component are welded by submerged arc welding. Traditional welding machine welding process is not convenient for fix the box component of equidimension not, leads to appearing rocking in the welding process, influences the welding effect, and the welding rifle is also not convenient for remove, uses and has the limitation.
Disclosure of Invention
The invention mainly solves the defects of poor operation stability and low processing precision in the prior art, and provides a box-type component double-wire carbon dioxide gas protection backing welding method which has the characteristics of compact structure, good operation stability and high processing precision. The problem of the box component welding degree of difficulty big and inefficiency is solved.
The technical problem of the invention is mainly solved by the following technical scheme:
a box-type component double-wire carbon dioxide gas protection backing welding method comprises the following operation steps:
the first step is as follows: a pair of flange plates are arranged on the left side and the right side, an upper web plate is arranged between the upper flange plate and the lower flange plate, and column sealing plates are arranged at the front end and the rear end of each flange plate and each web plate to form a box-shaped component.
The second step: the assembled box-type member is conveyed to the side edge of the movable welding assembly through a plurality of conveying roller ways, and then the box-type member is lifted and transversely moved to a supporting platform between the movable welding assembly and the conveying roller ways by a steel moving turnover machine between two adjacent conveying roller ways to be placed, and then the steel moving turnover machine descends to the other end of the conveying roller ways.
The third step: the front ends of welding seams on two sides of the upper end of the box-shaped member are provided with arc striking plates, the rear end of the box-shaped member is provided with an arc extinguishing plate, and then the welding assembly is moved to the arc extinguishing plate from the arc striking plates to complete the welding process of the welding seams on two sides of the upper end of the box-shaped member.
The fourth step: and moving the steel moving turnover machine to the lower part of the box-shaped member, lifting the box-shaped member to the supporting platform at the other end of the conveying roller way, then completing 180-degree turnover of the box-shaped member by the steel moving turnover machine, and then putting the box-shaped member which is completed with 180-degree turnover back to the supporting platform at the side edge of the moving welding assembly by the steel moving turnover machine to perform subsequent welding of the welding seam at the back side.
The fifth step: and after welding of four welding seams of the box-shaped member is completed, taking down the arc striking plate and the arc quenching plate, lifting the box-shaped member onto a conveying roller by a steel moving turnover machine, and discharging the box-shaped member through the conveying roller.
As preferred, box component passes through automatically controlled cabinet drive welding sideslip frame by a pair of welding arm on the welding frame on supporting platform and carries out counterpoint to the butt weld, and two welding guns of the welder mount control side of welding arm go up and down, protect through the baffle between welding gun and welder mount.
Preferably, the lower end of the welding gun fixing frame is limited in height through a welding pressure plate, and the front position and the rear position of the welding gun are tracked through arc guiding travelling wheels and the travelling path of the welding gun is adjusted in time.
Preferably, the welding guns are gas shielded welding guns, welding wires of the two welding guns form a pair of included angles with the box-shaped component in the transverse direction, an interval of 100mm is kept between the front welding wire and the rear welding wire, the front welding wire is longitudinally vertical to the web, the longitudinal included angle range of the rear welding wire and the web is controlled to be 12-15 degrees, and the arc guide travelling wheels are respectively attached to the top plate and the flange plates on the two sides.
Preferably, the welding gun adds the welding wire flux through a large hopper on the welding traverse frame during welding, and the flux during welding is recovered by a flux recovery tank.
Preferably, the welding machine frame enables the welding roller seat at the lower end of the welding machine frame to move along the welding track by pushing the operation arm, and double-wire carbon dioxide gas protection bottoming welding is carried out on the box-shaped component.
Preferably, when the box-shaped member is welded on the outer side of one side, the steel moving turnover machine is moved to the position below the box-shaped member, the left side turnover arm on the steel moving turnover machine is made to be flush with the lower end of the box-shaped member, the box-shaped member is lifted up and moved to a conveying roller way, after the steel moving turnover machine is moved, the left side turnover arm is turned over for 90 degrees to drive the box-shaped member to turn over for 90 degrees, the box-shaped member which is turned over for 90 degrees is placed at the supporting platform on the other side of the conveying roller way again, the steel moving turnover machine descends firstly and then translates and then lifts up, the box-shaped member is lifted up and moved to the conveying roller way by the left side turnover arm on the steel moving turnover machine, the box-shaped member is turned over for 90 degrees, and 180-degree turning over of the box-shaped member turning over process is completed.
The invention can achieve the following effects:
the invention provides a box-type component twin-wire carbon dioxide gas protection backing welding method which has the characteristics of compact structure, good operation stability and high processing precision compared with the prior art. The problem of the box component welding degree of difficulty big and inefficiency is solved.
Drawings
FIG. 1 is a schematic view showing the structure of a box-shaped member according to the present invention.
Fig. 2 is a schematic view of the structure of the present invention in which welding is performed.
FIG. 3 is a schematic view of the present invention in a lateral shift turning-over configuration.
Fig. 4 is a schematic view of the structure of the present invention at the completion of welding.
Fig. 5 is a schematic front view of the present invention.
FIG. 6 is a schematic view of the construction of a mobile welding assembly of the present invention.
Fig. 7 is a schematic view of the structure of the welding arm of the present invention.
In the figure: flange board 1, post shrouding 2, web 3, welding seam 4, remove welding subassembly 5, run-on plate 6, box component 7, supporting platform 8, move steel upset machine 9, rollgang 10, automatically controlled cabinet 11, operating arm 12, welding frame 13, welding sideslip frame 14, big medicine fill 15, welding flux recovery jar 16, welding arm 17, welding track 18, welding roller seat 19, welder mount 20, welding gun 21, lead arc walking wheel 22, welding pressure disk 23, baffle 24.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): as shown in fig. 1-7, a box-type member double-wire carbon dioxide gas shielded backing welding method comprises the following operation steps:
the first step is as follows: a pair of flange plates 1 are arranged on the left side and the right side, an upper web plate 3 is arranged between the upper flange plate 1 and the lower flange plate 1, and column sealing plates 2 are arranged at the front ends and the rear ends of the flange plates 1 and the web plate 3 to form a box-shaped component 7.
The second step is that: the assembled box-shaped member 7 is conveyed to the side edge of the movable welding assembly 5 through 3 conveying roller ways (10), then the box-shaped member 7 is lifted and transversely moved to a supporting platform 8 between the movable welding assembly 5 and the conveying roller ways 10 by a steel moving turnover machine 9 between two adjacent conveying roller ways 10 to be placed, and then the steel moving turnover machine 9 descends to the other end of the conveying roller ways 10.
The third step: arranging arc striking plates 6 at the front ends of welding seams 4 on two sides of the upper end of a box-shaped member 7, arranging arc extinguishing plates at the rear end of the box-shaped member 7, and moving a welding assembly 5 from the arc striking plates 6 to the arc extinguishing plates to complete the welding process of the welding seams 4 on two sides of the upper end of the box-shaped member 7;
the box-shaped component 7 is positioned on the supporting platform 8 by a pair of welding arms 17 on the welding rack 13 through the electric control cabinet 11 to drive the welding cross-sliding frame 14, two welding guns 21 on the side edges of the welding gun fixing frame 20 of the welding arms 17 are controlled to lift, and the welding guns 21 and the welding gun fixing frame 20 are protected through a baffle 24. The lower end of the welding gun fixing frame 20 is limited in height through a welding pressure plate 23, and the front and the rear of the welding gun 21 are tracked through an arc guide walking wheel 22 to track welding seams and adjust the advancing path of the welding gun in time. The welding frame 13 performs double-wire carbon dioxide gas shielded backing welding on the box-shaped member 7 by pushing the operation arm 12 so that the welding roller base 19 at the lower end of the welding frame 13 runs along the welding track 18.
The welding guns 21 are gas shielded welding guns, welding wires of the two welding guns 21 transversely form a pair of included angles with the box-shaped component 7, an interval of 100mm is kept between the front welding wire and the rear welding wire, the front welding wire is longitudinally vertical to the web, the range of the included angle between the rear welding wire and the web is controlled to be 13 degrees, and the arc guide travelling wheels 22 are respectively attached to the top plate and the flange plates 1 on the two sides. The welding gun 21 adds the welding wire flux through the large hopper 15 of the welding traverse frame 14 during the welding process, and the flux during the welding process is recovered by the flux recovery tank 16.
The fourth step: the steel moving turnover machine 9 moves to the position below the box-shaped member 7, the box-shaped member 7 is lifted to the position of the supporting platform 8 at the other end of the conveying roller way 10, then the steel moving turnover machine 9 finishes the turnover of the box-shaped member 7180 degrees, and then the box-shaped member 7 which finishes the turnover of 180 degrees is placed back to the position of the supporting platform 8 at the side edge of the moving welding assembly 5 by the steel moving turnover machine 9 to carry out the subsequent welding of the back weld seam.
When the box-type member 7 is welded on one outer side, the steel moving turnover machine 9 is moved to the position below the box-type member 7, a left side turnover arm on the steel moving turnover machine 9 is enabled to be flush with the lower end of the box-type member 7, the box-type member 7 is lifted up and moved to the conveying roller way 10, after the steel moving turnover machine is moved, the left side turnover arm is turned over for 90 degrees to drive the box-type member 7 to complete 90-degree turnover, the box-type member 7 which is turned over for 90 degrees is placed at the supporting platform 8 on the other side of the conveying roller way 10 again, the steel moving turnover machine 9 descends firstly and then translates and lifts, the box-type member 7 is lifted up and moved to the conveying roller way 10 by the left side turnover arm on the steel moving turnover machine 9, then the box-type member 7 is turned over for 90 degrees, and 180-degree turnover in the box-type member 7 turnover process is completed.
The fifth step: after welding of four welding lines 4 of the box-shaped member 7 is completed, the arc striking plate 6 and the arc extinguishing plate are taken down, the box-shaped member 7 is lifted to a conveying roller way 10 by a steel moving turnover machine 9, and the box-shaped member 7 is discharged through the conveying roller way 10.
In conclusion, the box-type member double-wire carbon dioxide gas protection backing welding method has the characteristics of compact structure, good operation stability and high machining precision. The problem of the box component welding degree of difficulty big and inefficiency is solved.
The above description is only an embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.
Claims (7)
1. A box-type component double-wire carbon dioxide gas protection backing welding method is characterized in that: the method comprises the following operation steps:
the first step is as follows: a pair of flange plates (1) are placed on the left side and the right side, an upper web plate (3) is placed between the upper side and the lower side of the two flange plates (1), and column seal plates (2) are arranged at the front end and the rear end of each of the flange plates (1) and the web plate (3) to form a box-shaped component (7);
the second step is that: the assembled box-type component (7) is conveyed to the side edge of the movable welding component (5) through a plurality of conveying roller ways (10), then the box-type component (7) is lifted and transversely moved to a supporting platform (8) between the movable welding component (5) and the conveying roller ways (10) by a steel moving turnover machine (9) between two adjacent conveying roller ways (10) to be placed, and then the steel moving turnover machine (9) descends to the other end of the conveying roller ways (10);
the third step: arranging an arc striking plate (6) at the front end of the welding seams (4) on the two sides of the upper end of the box-shaped member (7), arranging an arc extinguishing plate at the rear end of the box-shaped member (7), and moving the welding assembly (5) from the arc striking plate (6) to the arc extinguishing plate to complete the welding process of the welding seams (4) on the two sides of the upper end of the box-shaped member (7);
the fourth step: the steel moving turnover machine (9) moves to the position below the box-shaped member (7), the box-shaped member (7) is lifted to the position of a supporting platform (8) at the other end of the conveying roller way (10), then the steel moving turnover machine (9) completes 180-degree turnover of the box-shaped member (7), and then the box-shaped member (7) which completes 180-degree turnover is placed back to the position of the supporting platform (8) at the side edge of the moving welding assembly (5) by the steel moving turnover machine (9) to perform subsequent welding of a back-side welding seam;
the fifth step: after welding of four welding seams (4) of the box-shaped component (7), the arc striking plate (6) and the arc extinguishing plate are taken down, the box-shaped component (7) is lifted to a conveying roller way (10) by a steel moving turnover machine (9), and the box-shaped component (7) is discharged through the conveying roller way (10).
2. The box-type member twin-wire carbon dioxide gas shield backing welding method according to claim 1, characterized in that: the box-type component (7) is positioned on the supporting platform (8) through the electric control cabinet (11) by a pair of welding arms (17) on the welding rack (13) to drive the welding cross-moving frame (14), two welding guns (21) on the side edges of the welding gun fixing frame (20) of the welding arms (17) are controlled to lift, and the welding guns (21) are protected from the welding gun fixing frame (20) through the baffle (24).
3. The box-type member twin-wire carbon dioxide gas shield backing welding method according to claim 2, characterized in that: the lower end of the welding gun fixing frame (20) is limited in height through a welding pressure plate (23), and the front and the rear of the welding gun (21) are tracked through arc guiding walking wheels (22) to track welding seams and adjust the advancing route of the welding gun in time.
4. The box-type member twin-wire carbon dioxide gas shield backing welding method according to claim 3, characterized in that: the welding guns (21) are gas shield welding guns, welding wires of the two welding guns (21) transversely form a pair of included angles with the box-shaped component (7), an interval of 100mm is kept between the front welding wire and the rear welding wire, the front welding wire is longitudinally vertical to the web, the range of the included angle between the rear welding wire and the web is controlled to be 12-15 degrees, and the arc guide travelling wheels (22) are respectively attached to the top plate and the flange plates (1) on the two sides.
5. The box-type member twin-wire carbon dioxide gas shield backing welding method according to claim 4, characterized in that: the welding gun (21) adds welding flux to the welding wire through a large flux hopper (15) on the welding cross frame (14) in the welding process, and the flux in the welding process is recovered by a flux recovery tank (16).
6. The box-type member twin-wire carbon dioxide gas shield backing welding method according to claim 2, characterized in that: the welding machine frame (13) enables a welding roller seat (19) at the lower end of the welding machine frame (13) to move along a welding track (18) by pushing the operating arm (12), and double-wire carbon dioxide gas shielding backing welding is carried out on the box-shaped component (7).
7. The box-type member twin-wire carbon dioxide gas shield backing welding method according to claim 1, characterized in that: when the box-shaped member (7) is welded on one side, the steel moving turnover machine (9) is moved to the lower part of the box-shaped member (7), so that a left turning arm on the steel moving turning machine (9) is flush with the lower end of the box-shaped member (7), the box-shaped member (7) is lifted and moved to a conveying roller way (10), after the box-shaped member is moved, the left turning arm is turned for 90 degrees to drive the box-shaped member (7) to turn over for 90 degrees, the box-shaped member (7) turned over for 90 degrees is placed at a supporting platform (8) at the other side of the conveying roller way (10) again, and then the steel moving turnover machine (9) descends, translates and lifts, so that a left side turnover arm on the steel moving turnover machine (9) lifts the box-shaped member (7) and moves the box-shaped member to a conveying roller way (10), and then the box-shaped member (7) is turned over by 90 degrees, and the box-shaped member (7) is turned over by 180 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210282153.4A CN114713945A (en) | 2022-03-22 | 2022-03-22 | Box-type component double-wire carbon dioxide gas protection bottoming welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210282153.4A CN114713945A (en) | 2022-03-22 | 2022-03-22 | Box-type component double-wire carbon dioxide gas protection bottoming welding method |
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| Publication Number | Publication Date |
|---|---|
| CN114713945A true CN114713945A (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210282153.4A Pending CN114713945A (en) | 2022-03-22 | 2022-03-22 | Box-type component double-wire carbon dioxide gas protection bottoming welding method |
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| CN (1) | CN114713945A (en) |
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| JPS5340659A (en) * | 1976-09-27 | 1978-04-13 | Nippon Miniature Bearing Co | Welder |
| EP1724053A1 (en) * | 2005-05-16 | 2006-11-22 | Hager-Lumetal S.p.A. | Method and apparatus for fabricating casings intended to accommodate electric equipment |
| CN201161332Y (en) * | 2008-03-18 | 2008-12-10 | 哈尔滨四海数控科技股份有限公司 | Numerical control case type integrated machine for installing and welding beam |
| CN101733563A (en) * | 2009-12-10 | 2010-06-16 | 安徽富煌钢构股份有限公司 | Box-structure submerged arc and gas-shielded dual-purpose welding machine of thin wire |
| CN104741744A (en) * | 2015-04-21 | 2015-07-01 | 中国十九冶集团有限公司 | Vertical column welding method for heavy and large Q420B steel building steel structure |
| CN106334892A (en) * | 2016-11-24 | 2017-01-18 | 唐山开元特种焊接设备有限公司 | The H-shaped steel horizontal-type assembly padding machine |
| CN111482681A (en) * | 2020-05-22 | 2020-08-04 | 浙江东南网架股份有限公司 | Submerged arc welding method of H-shaped steel robot |
| CN113751931A (en) * | 2021-09-23 | 2021-12-07 | 深圳市泓智科技实业有限公司 | Protection welding device for precision sheet metal part |
| CN113996895A (en) * | 2021-11-12 | 2022-02-01 | 杭州高建机器人科技有限公司 | Automatic production line and method for H-shaped steel |
-
2022
- 2022-03-22 CN CN202210282153.4A patent/CN114713945A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5340659A (en) * | 1976-09-27 | 1978-04-13 | Nippon Miniature Bearing Co | Welder |
| EP1724053A1 (en) * | 2005-05-16 | 2006-11-22 | Hager-Lumetal S.p.A. | Method and apparatus for fabricating casings intended to accommodate electric equipment |
| CN201161332Y (en) * | 2008-03-18 | 2008-12-10 | 哈尔滨四海数控科技股份有限公司 | Numerical control case type integrated machine for installing and welding beam |
| CN101733563A (en) * | 2009-12-10 | 2010-06-16 | 安徽富煌钢构股份有限公司 | Box-structure submerged arc and gas-shielded dual-purpose welding machine of thin wire |
| CN104741744A (en) * | 2015-04-21 | 2015-07-01 | 中国十九冶集团有限公司 | Vertical column welding method for heavy and large Q420B steel building steel structure |
| CN106334892A (en) * | 2016-11-24 | 2017-01-18 | 唐山开元特种焊接设备有限公司 | The H-shaped steel horizontal-type assembly padding machine |
| CN111482681A (en) * | 2020-05-22 | 2020-08-04 | 浙江东南网架股份有限公司 | Submerged arc welding method of H-shaped steel robot |
| CN113751931A (en) * | 2021-09-23 | 2021-12-07 | 深圳市泓智科技实业有限公司 | Protection welding device for precision sheet metal part |
| CN113996895A (en) * | 2021-11-12 | 2022-02-01 | 杭州高建机器人科技有限公司 | Automatic production line and method for H-shaped steel |
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