CN114054910A - Welding method suitable for small-sized special-shaped H-shaped steel - Google Patents
Welding method suitable for small-sized special-shaped H-shaped steel Download PDFInfo
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- CN114054910A CN114054910A CN202111422876.1A CN202111422876A CN114054910A CN 114054910 A CN114054910 A CN 114054910A CN 202111422876 A CN202111422876 A CN 202111422876A CN 114054910 A CN114054910 A CN 114054910A
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- 238000003466 welding Methods 0.000 title claims abstract description 167
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 82
- 239000010959 steel Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000004907 flux Effects 0.000 description 12
- 239000002893 slag Substances 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 239000010953 base metal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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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
- B23K9/20—Stud welding
-
- 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
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for 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
- B23K9/32—Accessories
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a welding method suitable for small-sized special-shaped H-shaped steel, which comprises the following steps of: building a working platform, then placing the trolley type automatic submerged arc welding machine on a track of the working platform, and mounting a bracket on one side of the trolley type automatic submerged arc welding machine; spot welding and fixing the small special-shaped H-shaped steel to be welded, and then placing the small special-shaped H-shaped steel to be welded on the bracket by using a motor; adjusting the position of the trolley type automatic submerged arc welding machine according to the initial position of the welding seam to be welded, then adjusting a mechanical arm of the trolley type automatic submerged arc welding machine to enable a welding gun contact nozzle of the trolley type automatic submerged arc welding machine to be located above the welding seam to be welded, and completing welding of the welding seam along with movement of the trolley type automatic submerged arc welding machine; and then, sequentially completing the welding of the other three welds according to the method, thereby completing the welding of the four welds to be welded of the small special-shaped H-shaped steel to be welded. The welding method can effectively ensure the welding quality of the small-sized special-shaped H-shaped steel and has high welding efficiency.
Description
Technical Field
The invention belongs to the technical field of building accessory processing, and particularly relates to a welding method suitable for small-sized special-shaped H-shaped steel.
Background
Modern buildings often need to process some small-size special-shaped H shaped steel in the work progress, for example need set up small-size special-shaped H shaped steel between the upper chord member and the lower chord member of truss, and the flange board and the crooked dysmorphism of taking place of corresponding end are stretched out to the both ends of small-size special-shaped H shaped steel web, then are connected with upper chord member and lower chord member respectively through the special-shaped web. At present, the conventional method is manual welding, the welding efficiency is low, and manpower is wasted, so how to rapidly process and manufacture the small-sized special-shaped H-shaped steel is a trouble of technicians in the field.
The web plate and the flange plate of the small special-shaped H-shaped steel are thin, so that when the web plate and the flange plate are welded, the size of a welding seam is small, if a large gantry submerged arc welding machine is used for welding, a large-diameter welding wire (phi = 3-5 mm) is generally used, and if the welding speed is regulated, the problem of overlarge size of the welding seam exists, the small H-shaped steel is easy to deform to a certain extent, and the small H-shaped steel is not qualified; if the welding speed is increased to ensure a reasonable weld size, the welding defects of incomplete penetration, slag inclusion and the like are easy to occur on the weld, and the welding quality is also influenced.
Disclosure of Invention
In view of the above-mentioned shortcomings in the prior art, the present invention aims to provide a welding method suitable for small-sized special-shaped H-shaped steel, which can effectively ensure the welding quality of the small-sized special-shaped H-shaped steel and has high welding efficiency.
The technical scheme of the invention is realized as follows:
a welding method suitable for small-sized special-shaped H-shaped steel comprises the following steps:
(1) building a working platform, installing two rails corresponding to pulleys of the trolley type automatic submerged arc welding machine on the working platform, and then placing the trolley type automatic submerged arc welding machine on the rails of the working platform so that the trolley type automatic submerged arc welding machine can move back and forth on the rails; then a bracket for placing small special-shaped H-shaped steel to be welded is arranged on one side of the trolley type automatic submerged arc welding machine;
(2) respectively fixing an upper flange plate and a lower flange plate of the small special-shaped H-shaped steel to be welded with a web by spot welding, then obliquely placing the small special-shaped H-shaped steel to be welded on a bracket, and enabling a welding seam to be welded of the upper flange plate and the web to face upwards and be positioned at the lower end of the small special-shaped H-shaped steel to be welded;
(3) adjusting the position of the trolley type automatic submerged arc welding machine according to the initial position of the weld to be welded, then adjusting a mechanical arm of the trolley type automatic submerged arc welding machine to enable a welding gun contact nozzle of the trolley type automatic submerged arc welding machine to be located above the weld to be welded, then inputting welding parameters and starting the trolley type automatic submerged arc welding machine, and completing welding of the weld along with movement of the trolley type automatic submerged arc welding machine;
(4) adjusting the small special-shaped H-shaped steel to be welded to enable the welding seams to be welded of the lower flange plate and the web plate to face upwards and to be located at the lower end of the small special-shaped H-shaped steel to be welded, and repeating the step (3) to complete welding of the welding seams;
(5) and (3) turning the small special-shaped H-shaped steel to be welded, and repeating the step (3) and the step (4) to sequentially complete the welding of the two welding seams of the upper flange plate and the web plate and the welding of the four welding seams to be welded of the small special-shaped H-shaped steel to be welded.
Further, the working platform is composed of two I-shaped steels and a rectangular pipe horizontally arranged between the two I-shaped steels, the track is composed of two steel bars arranged on the upper surface of the rectangular pipe, and the two steel bars are embedded into pulleys on the left side and the right side of the trolley type automatic submerged arc welding machine, so that the trolley type automatic submerged arc welding machine can move back and forth along the track.
Furthermore, the bracket is composed of a plurality of support plates, all the support plates are vertically arranged on the ground on one side of the rectangular tube side by side at intervals along the longitudinal direction of the rectangular tube and are welded and fixed with the rectangular tube correspondingly, each support plate is provided with a V-shaped notch with an upward opening, and two sides corresponding to the V-shaped notches are vertical.
Compared with the prior art, the invention has the following beneficial effects:
the small special-shaped H-shaped steel is supported by the bracket, and the small special-shaped H-shaped steel is welded by the trolley type automatic submerged arc welding machine, so that compared with manual welding by using a welding gun, the small special-shaped H-shaped steel welding machine realizes mechanical operation, can effectively reduce the working strength and improve the working efficiency, and can obviously improve the working efficiency particularly when the small special-shaped H-shaped steel is processed and manufactured in batches. Meanwhile, the operation parameters of the automatic submerged arc welding machine can be timely adjusted according to the welding seam forming condition, and the welding quality is guaranteed.
Drawings
Fig. 1-structural diagram of the present invention.
FIG. 2-schematic diagram of the structure of the present invention.
Wherein: 1-I-steel; 2-rectangular pipe; 3-a track; 4-a bracket; 5-small-sized special-shaped H-shaped steel; 6-a controller; 7-welding torch contact tip; 8-the trolley main body; 9-welding wires; 10-a mechanical arm; 11-a flux funnel; 12-a catheter; 13-wire reel.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and 2, a welding method suitable for small-sized special-shaped H-shaped steel comprises the following steps:
(1) building a working platform, installing two rails 3 corresponding to pulleys of the trolley type automatic submerged arc welding machine on the working platform, and then placing the trolley type automatic submerged arc welding machine on the rails 3 of the working platform so that the trolley type automatic submerged arc welding machine can move on the rails 3 in a reciprocating mode; then a bracket 4 for placing small special-shaped H-shaped 5 steel to be welded is arranged on one side of the trolley type automatic submerged arc welding machine;
(2) respectively fixing an upper flange plate and a lower flange plate of the small special-shaped H-shaped steel 5 to be welded with the web by spot welding, then obliquely placing the small special-shaped H-shaped steel 5 to be welded on the bracket 4, and enabling the welding seams of the upper flange plate and the web to be welded to face upwards and be positioned at the lower end of the small special-shaped H-shaped steel to be welded; as shown in figures 1 and 2 of the drawings,
(3) adjusting the position of the trolley type automatic submerged arc welding machine according to the initial position of the welding line to be welded, then adjusting a mechanical arm 10 of the trolley type automatic submerged arc welding machine to enable a welding gun contact tip 7 of the trolley type automatic submerged arc welding machine to be located above the welding line to be welded, then inputting welding parameters and starting the trolley type automatic submerged arc welding machine, and completing welding of the welding line along with movement of the trolley type automatic submerged arc welding machine;
(4) adjusting the small special-shaped H-shaped steel 5 to be welded to enable the welding seams to be welded of the lower flange plate and the web plate to face upwards and to be located at the lower end of the small special-shaped H-shaped steel to be welded, and repeating the step (3) to complete welding of the welding seams;
(5) and (3) turning the small special-shaped H-shaped steel 5 to be welded, and repeating the step (3) and the step (4) to sequentially complete the welding of the two welding seams of the upper flange plate and the web plate and the welding of the four welding seams to be welded of the small special-shaped H-shaped steel to be welded.
The upper flange plate and the lower flange plate are opposite, in the welding process, two welding seams located on the same surface are welded firstly, then the small special-shaped H-shaped steel is turned over, then the two welding seams on the other surface are welded, and only the welding needs to be performed in sequence during welding, for example, the two welding seams located on the upper flange plate and the web plate are 1 and 2, the two welding seams located on the lower flange plate and the web plate are 3 and 4, 1 and 3 are located on the same surface of the small special-shaped H-shaped steel, and 2 and 4 are located on the same surface of the small special-shaped H-shaped steel, so that the sequence of the welding process is 1, 3, 2, 4 or 3, 1, 4, 2 or 2, 4, 1, 3 or 4, 2, 3, 1. When the position of the small-sized special-shaped H-shaped steel is adjusted and the small-sized special-shaped H-shaped steel is turned over each time, two clamps can be clamped on a flange plate at one end of the small-sized special-shaped H-shaped steel, the small-sized special-shaped H-shaped steel 5 is lifted by a motor and then is lightly placed on a bracket. FIGS. 1 and 2 show two states of the small-sized special-shaped H-shaped steel when two weld lines are formed on the same plane.
Referring to fig. 1, the trolley type automatic submerged arc welding machine comprises a trolley main body 8, and a controller 6, a wire reel 13, a flux funnel 11, a welding gun contact tip 7 and a mechanical arm 10 which are arranged on the trolley main body 8, wherein the controller 6 is used for adjusting welding parameters, the wire reel 13 is used for placing welding wires, and the flux funnel 11 is used for placing fluxes; the vertical support column that is equipped with on the dolly main part 8, support column upper end level are equipped with a supporting beam, controller 6 and wire reel 13 are fixed in a supporting beam one end, and robotic arm 10 sets up at a supporting beam other end, just solder flux funnel 11 and welder contact tube 7 set up on robotic arm 10, are convenient for remove along with robotic arm 10, welding contact tube 7 is convenient for weld small-size special-shaped H shaped steel placing on the bracket down, and 11 exit end of solder flux funnel are connected with pipe 12, pipe 12 free end is fixed on welder contact tube 7, is convenient for lay the solder flux to wait to weld the department.
During welding, an operator firstly horizontally puts the small special-shaped H-shaped steel 5 on the bracket, then slides the trolley main body to the position according to the initial position of the welding seam of the small special-shaped H-shaped steel, adjusts the mechanical arm 10, adjusts the welding gun contact nozzle to the position above the welding seam, and controls the dry extension of the welding wire 9; then, the operator deposits the granular flux from the flux funnel to the welding position of the welding seam through the guide pipe, and inputs reasonable welding parameters (welding speed, wire feeding speed, welding current and the like) on the controller 6, the trolley main body 8 slides on the track, the welding wire disc 13 feeds the welding wire 9 into the welding area through the welding gun contact tip 7, and the welding wire 9 and the base metal are heated along with the arc combustion generated under the welding gun contact tip 7. The arc heat causes the welding wire, the flux and the base metal to be partially melted and partially evaporated, the metal vapor, the flux vapor and gases precipitated in the metallurgical process form a cavity around the arc, and the melted flux forms a slag shell on the upper part of the cavity. After the four welding seams are welded, after the four welding seams are cooled for a short time, an operator shovels away the slag shells on the surfaces of the welding seams by using the steel bars, processes the small special-shaped H-shaped steel, and then sends the small special-shaped H-shaped steel into a specified area by using a motor to store the small special-shaped H-shaped steel.
The trolley type automatic submerged arc welding machine is adopted to weld the small-sized special-shaped H-shaped steel, the trolley type automatic submerged arc welding machine is adopted to commonly use a small-diameter welding wire (phi = 1.6-2 mm), the problem that the welding quality of the small-sized special-shaped H-shaped steel is influenced due to overlarge size of a welding line is avoided, an operator can realize real-time control over the trolley type automatic submerged arc welding machine according to the welding condition, the operation parameters of the automatic submerged arc welding machine are timely adjusted according to the welding line forming condition, and the welding quality is guaranteed. Compared with manual welding, the mechanical operation is realized, the working strength can be effectively reduced, and the working efficiency can be improved.
When the automatic submerged arc welding machine is specifically implemented, the working platform is composed of two I-shaped steels 1 and a rectangular pipe 3 horizontally arranged between the two I-shaped steels 1, the track 3 is composed of two steel bars arranged on the upper surface of the rectangular pipe 2, and the two steel bars are embedded into pulleys on the left side and the right side of the automatic submerged arc welding machine so that the automatic submerged arc welding machine can reciprocate along the track 3.
The specification of the rectangular tube in the embodiment is 400 × 10mm, and in order to ensure the operation reasonability and comfort of an operator when processing a component and observe a welding seam in the operation process, the height of the working platform in the embodiment is not less than 1 meter.
During specific implementation, the bracket 4 is composed of a plurality of supporting plates, all the supporting plates are vertically arranged on the ground on one side of the rectangular tube 2 at intervals side by side along the longitudinal direction of the rectangular tube 2 and are welded and fixed correspondingly to the rectangular tube 2, a V-shaped notch with an upward opening is arranged on each supporting plate, and two sides corresponding to the V-shaped notches are vertical.
The backup pad adopts the steel sheet processing of delta =20 to make in this embodiment, knows by the picture that there are two backup pads in this embodiment, and the backup pad setting corresponds the side welded fastening subaerial and with the square tube, and the both sides that the V-arrangement breach corresponds are perpendicular, and the V-arrangement breach is a right angle breach promptly, makes small-size special-shaped H shaped steel can stably place on the bracket like this, and the operating personnel of being convenient for operate and observe.
Finally, it should be noted that the above-mentioned examples of the present invention are only examples for illustrating the present invention, and are not intended to limit the embodiments of the present invention. Variations and modifications in other variations will occur to those skilled in the art upon reading the foregoing description. Not all embodiments are exhaustive. All obvious changes and modifications of the present invention are within the scope of the present invention.
Claims (3)
1. A welding method suitable for small-sized special-shaped H-shaped steel is characterized by comprising the following steps:
(1) building a working platform, installing two rails corresponding to pulleys of the trolley type automatic submerged arc welding machine on the working platform, and then placing the trolley type automatic submerged arc welding machine on the rails of the working platform so that the trolley type automatic submerged arc welding machine can move back and forth on the rails; then a bracket for placing small special-shaped H-shaped steel to be welded is arranged on one side of the trolley type automatic submerged arc welding machine;
(2) respectively fixing an upper flange plate and a lower flange plate of the small special-shaped H-shaped steel to be welded with a web by spot welding, then obliquely placing the small special-shaped H-shaped steel to be welded on a bracket, and enabling a welding seam to be welded of the upper flange plate and the web to face upwards and be positioned at the lower end of the small special-shaped H-shaped steel to be welded;
(3) adjusting the position of the trolley type automatic submerged arc welding machine according to the initial position of the weld to be welded, then adjusting a mechanical arm of the trolley type automatic submerged arc welding machine to enable a welding gun contact nozzle of the trolley type automatic submerged arc welding machine to be located above the weld to be welded, then inputting welding parameters and starting the trolley type automatic submerged arc welding machine, and completing welding of the weld along with movement of the trolley type automatic submerged arc welding machine;
(4) adjusting the small special-shaped H-shaped steel to be welded to enable the welding seams to be welded of the lower flange plate and the web plate to face upwards and to be located at the lower end of the small special-shaped H-shaped steel to be welded, and repeating the step (3) to complete welding of the welding seams;
(5) and (3) turning the small special-shaped H-shaped steel to be welded, and repeating the step (3) and the step (4) to sequentially complete the welding of the two welding seams of the upper flange plate and the web plate and the welding of the four welding seams to be welded of the small special-shaped H-shaped steel to be welded.
2. The welding method of small special-shaped H-shaped steel according to claim 1, wherein the working platform is composed of two I-shaped steel and a rectangular pipe horizontally arranged between the two I-shaped steel, the rail is composed of two steel bars arranged on the upper surface of the rectangular pipe, and the two steel bars are embedded into pulleys on the left side and the right side of the trolley type automatic submerged arc welding machine so that the trolley type automatic submerged arc welding machine can reciprocate along the rail.
3. The welding method of claim 2, wherein the bracket is formed by a plurality of support plates, all the support plates are vertically arranged on the ground at one side of the rectangular tube side by side at intervals along the longitudinal direction of the rectangular tube and are welded and fixed correspondingly to the rectangular tube, each support plate is provided with a V-shaped notch with an upward opening, and two corresponding sides of the V-shaped notch are vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111422876.1A CN114054910A (en) | 2021-11-26 | 2021-11-26 | Welding method suitable for small-sized special-shaped H-shaped steel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111422876.1A CN114054910A (en) | 2021-11-26 | 2021-11-26 | Welding method suitable for small-sized special-shaped H-shaped steel |
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| CN114054910A true CN114054910A (en) | 2022-02-18 |
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| CN202111422876.1A Pending CN114054910A (en) | 2021-11-26 | 2021-11-26 | Welding method suitable for small-sized special-shaped H-shaped steel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115556799A (en) * | 2022-10-13 | 2023-01-03 | 武汉武船重型装备工程有限责任公司 | Installation method of mechanical brake track |
| CN119077092A (en) * | 2024-11-08 | 2024-12-06 | 山东聚鑫集团钢结构有限公司 | A welding method for supporting steel columns with reduced welding deformation |
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Cited By (2)
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| CN119077092A (en) * | 2024-11-08 | 2024-12-06 | 山东聚鑫集团钢结构有限公司 | A welding method for supporting steel columns with reduced welding deformation |
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Application publication date: 20220218 |