CN110681954A - Method for assembling fillet weld at vertical position of thin plate - Google Patents
Method for assembling fillet weld at vertical position of thin plate Download PDFInfo
- Publication number
- CN110681954A CN110681954A CN201911046520.5A CN201911046520A CN110681954A CN 110681954 A CN110681954 A CN 110681954A CN 201911046520 A CN201911046520 A CN 201911046520A CN 110681954 A CN110681954 A CN 110681954A
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- Prior art keywords
- welding
- vertical
- tack
- thin plate
- thin plates
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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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
Abstract
The invention discloses a fillet weld assembly method for a vertical position of a thin plate, and belongs to the technical field of metal welding. The invention relates to a method for assembling fillet welds at the vertical positions of thin plates, which comprises the steps of fixing two thin plates to be welded; and then welding the part to be welded by adopting a vertical downward positioning welding process. The vertical downward tack welding process is adopted to shorten the tack welding length and the tack welding distance, the vertical downward tack welding length is 15-20mm, the two adjacent tack welding distances are 100-150mm, meanwhile, the vertical downward tack welding is adopted, the leg size of the tack welding can be effectively controlled to be less than or equal to 3mm, the projection degree of the tack welding seam is ensured to be concave, the over-projection condition of the formal fillet welding seam at the tack welding position when the formal fillet welding seam covers the tack welding is avoided, the welding seam forming of the formal fillet welding seam at the tack welding position is improved, the polishing amount is effectively reduced, meanwhile, the welding speed is high, the welding efficiency is high, and the deformation of a thin plate caused by the tack welding can be reduced.
Description
Technical Field
The invention relates to the technical field of metal welding, in particular to a method for assembling fillet welds at the vertical positions of thin plates.
Background
The existing fillet welding line at the vertical position of the thin plate is basically assembled and fixed by vertical positioning welding, the length of a single positioning welding line assembled and fixed by the process is 30-50mm, and the distance between two adjacent positioning welding lines is 200-300 mm. Due to the fact that the positioning welding distance is too large, in the formal fillet weld welding process, the assembled and fixed thin plate can deform at the position without the positioning welding, so that the assembly gap is enlarged, and the welding quality is affected. The surface shape of a vertical upward positioning welding seam belongs to convex positioning welding, the size of a positioning welding leg is more than or equal to 5mm, the size of the welded leg is more than or equal to 5mm after welding, the size of the formal vertical position fillet welding seam design theory welding leg is generally less than or equal to 5mm, the size of the positioning welding leg is larger than that of the formal fillet welding seam, when the formal fillet welding seam covers the positioning welding, the appearance of the formal fillet welding seam is too convex, and welding molten metal is prone to flowing and the like, so that the welding seam forming is influenced. Moreover, the welding speed of the vertical up-position welding is slow, the welding line energy is large, and the deformation control of the thin plate is not facilitated.
Therefore, it is desirable to provide a method for assembling a fillet weld at a vertical position of a thin plate to solve the above-mentioned drawbacks of the fillet weld at a vertical position of a thin plate fixed by the conventional tack welding.
Disclosure of Invention
The invention aims to provide an assembling method of a fillet weld at a vertical position of a thin plate, which can ensure the assembling strength and precision, effectively control the size of a tack weld, avoid overlarge size of the tack weld, reduce the deformation of the thin plate, reduce the polishing amount of the tack weld and improve the forming of the fillet weld at the vertical position.
In order to realize the purpose, the following technical scheme is provided:
the invention provides a fillet weld assembly method for a vertical position of a thin plate, which comprises the following steps:
fixing two sheets to be welded;
and welding the part to be welded by adopting a vertical downward positioning welding process.
Further, before the thin plates to be welded are fixed, the long edge of the first thin plate is attached to the surface of the second thin plate, and the two thin plates are placed in a T-shaped joint.
Furthermore, the long edges of the two thin plates are perpendicular to the horizontal plane, and the short edges of the two thin plates are parallel to the horizontal plane.
Further, the gap between the long edge of the first thin plate and the plate surface of the second thin plate is 0-1 mm.
Further, the two sheets are fixed separately using a support structure.
Further, the step of welding by adopting the vertical downward positioning welding process specifically comprises the following steps: and carrying out positioning welding along the welding gap position of the two thin plates from top to bottom in a segmented mode.
Further, the vertical downward tack welding process uses flux cored or solid wire for welding.
Further, the vertical down tack welding process uses semi-automatic CO2And (5) welding by using a welding machine.
Further, the welding current of the vertical down position welding process is 180-.
Furthermore, after the two thin plates are fixed, the welding parts of the two thin plates are cleaned before the vertical downward tack welding process is carried out.
Compared with the prior art, the sheet vertical position fillet welding seam assembling method provided by the invention has the advantages that the vertical downward tack welding is adopted to assemble and fix the sheet vertical position fillet welding seam, the tack welding length and the tack welding interval are shortened, the vertical downward tack welding length is 15-20mm, the adjacent two tack welding intervals are 100 plus 150mm, meanwhile, the vertical downward tack welding process is adopted, the size of a welding leg of the tack welding can be effectively controlled to be less than or equal to 3mm, the tack welding seam convexity is ensured to be concave, the situation that the formal fillet welding seam is formed to be over-convex at the tack welding position when the formal fillet welding seam covers the tack welding is avoided, the seam forming of the formal fillet welding seam at the tack welding position is improved, and the polishing amount is effectively reduced. The vertical positioning welding has high welding speed and high welding efficiency, can reduce the deformation of the thin plate caused by the positioning welding, and is more favorable for the assembly of the fillet weld at the vertical position of the thin plate.
Detailed Description
In order to make the technical problems solved, technical solutions adopted, and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment provides a fillet weld assembly method for a vertical position of a thin plate, which comprises the following steps:
s1, closely attaching the long edge of the first thin plate to the surface of the second thin plate, placing the two thin plates in a T-shaped joint, and fixing the two thin plates respectively by using a supporting structure;
s2, cleaning the welding part of the two thin plates;
and S3, welding the part to be welded by adopting a vertical downward positioning welding process, specifically, performing multi-section positioning welding from top to bottom along the welding gap position of the two thin plates.
The long sides of the two thin plates fixed in step S1 are both perpendicular to the horizontal plane, and the short sides are parallel to the horizontal plane. The clearance between the long edge of the first thin plate and the plate surface of the second thin plate is 0-1 mm. In step S2, oil, rust and other contaminants on the welding side of the first thin plate and the plate surface of the second thin plate within 20mm width are removed by using a cleaning agent, and then the plate surface is dried. Step S3, during specific welding, arc striking is carried out on the positioning welding seam, and the extension length of a welding wire during arc striking is shorter than that during welding; a linear or zigzag wire conveying method is adopted, and the two sides of the groove are slightly kept during strip conveying, so that good fusion of the two sides of the welding line is ensured; the inclination angle of the welding wire is controlled to be 30-50 degrees on the horizontal plane; and the welding gun moves from the upper end to the lower end of the welding line for welding. Wherein the vertical downward position welding process uses flux-cored wire or solid wire, semi-automatic CO2The welding machine carries out welding, and the welding technological parameters are as follows: the welding current is 180-.
Preferably, the supporting structure is a triangular support, two triangular supports are symmetrically arranged on two sides of the to-be-welded thin plate, in order to enable the triangular supports to be firmly supported, the bottom of each triangular support can be fixed on the substrate through screws, and each to-be-welded thin plate is supported and fixed through a plurality of pairs of triangular supports, so that the supporting reliability is guaranteed.
In the prior art, a fillet weld is vertically arranged at a thin plate assembled by vertical position welding, the length of a single position welding is 30-50mm, the distance between two adjacent position welding is 200-300mm, and because the distance between the position welding and the fillet weld is too large, the assembled and fixed thin plate can deform at the position without the position welding in the formal fillet weld welding process, so that the assembly gap is enlarged, and the welding quality is influenced. The surface of the positioning welding is formed into a convex shape, the size of a positioning welding leg is more than or equal to 5mm, the size of the welded leg is more than or equal to 5mm, the size of the theoretical welding leg of the formal vertical fillet welding is less than or equal to 5mm, the size of the positioning welding leg is larger than that of the formal fillet welding, when the formal fillet welding is welded, too much molten metal is arranged at the position welding position in the vertical direction, the appearance of the formal fillet welding is too convex, and even the molten metal flows downwards to generate defects such as welding beading. And the welding speed of the vertical up position welding is slow, the welding line energy is large, and the deformation control of the thin plate is not facilitated.
The fillet weld at the vertical position of the thin plate assembled by the vertical downward tack welding of the embodiment has the length of 15-20mm in the vertical downward tack welding, the distance between two adjacent tack welds is 100-150mm, and meanwhile, the vertical downward tack welding is adopted, so that the leg size of the tack welding can be effectively controlled to be less than or equal to 3mm, the tack welding seam is concave, the molten metal of the formal vertical fillet weld at the vertical downward tack welding position cannot be obviously excessive, the defects of the formal vertical fillet weld such as over-projection and welding beading caused by the downward flow of the molten metal cannot be caused, the forming uniformity of the formal vertical fillet weld is ensured, the polishing of the formal vertical fillet weld at the tack welding position is avoided, the efficiency is improved, and the advantages are more obvious particularly when the formal vertical fillet weld is smaller. The vertical positioning welding has high welding speed and high welding efficiency, can reduce the deformation of the thin plate caused by the positioning welding, and is more favorable for the assembly of the fillet weld at the vertical position of the thin plate.
According to the method for assembling the fillet weld at the vertical position of the thin plate, the fillet weld at the vertical position of the thin plate is assembled and fixed by adopting vertical downward positioning welding, the positioning welding length and the positioning welding interval are shortened, the vertical downward positioning welding length is 15-20mm, the interval between two adjacent positioning welding is 100 plus 150mm, meanwhile, the vertical downward positioning welding is adopted, the size of a welding leg of the positioning welding can be effectively controlled to be less than or equal to 3mm, the convexity of the positioning welding seam is ensured to be concave, the situation that the formal fillet weld is formed and protrudes at the positioning welding position when the formal fillet weld covers the positioning welding is avoided, the weld forming of the formal fillet weld at the positioning welding position is improved, and the polishing amount is effectively reduced. The vertical positioning welding has high welding speed and high welding efficiency, can reduce the deformation of the thin plate caused by the positioning welding, and is more favorable for the assembly of the fillet weld at the vertical position of the thin plate.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for assembling fillet welds at the vertical positions of thin plates is characterized by comprising the following steps:
fixing two sheets to be welded;
and welding the part to be welded by adopting a vertical downward positioning welding process.
2. The method of assembling a fillet weld at an upright position of thin plates according to claim 1, wherein before fixing the thin plates to be welded, the long side of the first thin plate is closely attached to the surface of the second thin plate, and the two thin plates are placed in a T-shaped joint.
3. The method of assembling a fillet weld at an upright position of thin plates according to claim 2, wherein the long sides of the two thin plates are perpendicular to the horizontal plane and the short sides are parallel to the horizontal plane.
4. The method of assembling a fillet weld at a vertical position of a thin plate according to claim 3, wherein a clearance between a long side of the first thin plate and a plate surface of the second thin plate is 0 to 1 mm.
5. The method of claim 1, wherein the two sheets are each secured using a support structure.
6. The method of assembling a fillet weld at a vertical position of a thin plate according to claim 1, wherein the step of welding by a vertical down tack welding process comprises: and carrying out positioning welding along the welding gap position of the two thin plates from top to bottom in a segmented mode.
7. The method of assembling a sheet vertical fillet weld according to claim 1, wherein the vertical downdraw tack welding process uses flux cored or solid wire for welding.
8. The method of sheet vertical fillet weld assembly according to claim 1, wherein the vertical tack down process uses semi-automated CO2And (5) welding by using a welding machine.
9. The method as claimed in claim 1, wherein the welding current of the vertical and downward tack welding process is 180-220A, the arc voltage is 23-27V, and the welding speed is 500-750 mm/min.
10. The method of assembling a fillet weld at an upright position of thin plates as claimed in claim 1, wherein after fixing the two thin plates, the welding portion of the two thin plates is cleaned before performing the vertical tack welding process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046520.5A CN110681954A (en) | 2019-10-30 | 2019-10-30 | Method for assembling fillet weld at vertical position of thin plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046520.5A CN110681954A (en) | 2019-10-30 | 2019-10-30 | Method for assembling fillet weld at vertical position of thin plate |
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| CN110681954A true CN110681954A (en) | 2020-01-14 |
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| CN201911046520.5A Pending CN110681954A (en) | 2019-10-30 | 2019-10-30 | Method for assembling fillet weld at vertical position of thin plate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112719517A (en) * | 2020-12-16 | 2021-04-30 | 中车眉山车辆有限公司 | Fusion welding connection process for special-shaped welding seams of steel structure car body |
| CN113145979A (en) * | 2021-04-29 | 2021-07-23 | 广船国际有限公司 | Welding method of ship window frame |
| CN115255561A (en) * | 2022-07-13 | 2022-11-01 | 上海江南长兴造船有限责任公司 | Welding method for fillet weld of ship descending at segmental erection position |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2233641A1 (en) * | 1972-07-08 | 1974-01-17 | Kobe Steel Ltd | Arc welding process - oscillates electrode tip to improve penetration |
| JPS5113343A (en) * | 1974-07-24 | 1976-02-02 | Mitsui Shipbuilding Eng | TATEMUKISUMINIKUTSUGITENO YOSETSUSOCHI |
| JPS60231572A (en) * | 1984-05-01 | 1985-11-18 | Mitsubishi Heavy Ind Ltd | Vertical fillet welding device |
| JPH04162978A (en) * | 1990-10-26 | 1992-06-08 | Ishikawajima Harima Heavy Ind Co Ltd | Method for preventing welding distortion |
| CN102699493A (en) * | 2012-07-03 | 2012-10-03 | 马鞍山马钢设备安装工程有限公司 | Carbon dioxide (CO2) gas shielded welding vertical downwards welding method for waste heat boiler heat pipe and connecting plate |
| CN103862134A (en) * | 2012-12-17 | 2014-06-18 | 天津天铁冶金集团有限公司 | Vertical down welding method of J422 plain steel electrode |
| CN105562896A (en) * | 2016-02-04 | 2016-05-11 | 广州文冲船厂有限责任公司 | Welding process of downward fillet welding in vertical position of gas shielded welding |
| CN106891081A (en) * | 2017-04-28 | 2017-06-27 | 广船国际有限公司 | A kind of vertical corner connection double-wire automatic welding connects method |
| CN109773307A (en) * | 2019-03-07 | 2019-05-21 | 浙江师范大学 | One kind is stood to fillet weld robot deep penetration welding technique |
-
2019
- 2019-10-30 CN CN201911046520.5A patent/CN110681954A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2233641A1 (en) * | 1972-07-08 | 1974-01-17 | Kobe Steel Ltd | Arc welding process - oscillates electrode tip to improve penetration |
| JPS5113343A (en) * | 1974-07-24 | 1976-02-02 | Mitsui Shipbuilding Eng | TATEMUKISUMINIKUTSUGITENO YOSETSUSOCHI |
| JPS60231572A (en) * | 1984-05-01 | 1985-11-18 | Mitsubishi Heavy Ind Ltd | Vertical fillet welding device |
| JPH04162978A (en) * | 1990-10-26 | 1992-06-08 | Ishikawajima Harima Heavy Ind Co Ltd | Method for preventing welding distortion |
| CN102699493A (en) * | 2012-07-03 | 2012-10-03 | 马鞍山马钢设备安装工程有限公司 | Carbon dioxide (CO2) gas shielded welding vertical downwards welding method for waste heat boiler heat pipe and connecting plate |
| CN103862134A (en) * | 2012-12-17 | 2014-06-18 | 天津天铁冶金集团有限公司 | Vertical down welding method of J422 plain steel electrode |
| CN105562896A (en) * | 2016-02-04 | 2016-05-11 | 广州文冲船厂有限责任公司 | Welding process of downward fillet welding in vertical position of gas shielded welding |
| CN106891081A (en) * | 2017-04-28 | 2017-06-27 | 广船国际有限公司 | A kind of vertical corner connection double-wire automatic welding connects method |
| CN109773307A (en) * | 2019-03-07 | 2019-05-21 | 浙江师范大学 | One kind is stood to fillet weld robot deep penetration welding technique |
Non-Patent Citations (3)
| Title |
|---|
| 刘森: "《冷作工基本技术》", 31 December 2004, 北京：金盾出版社 * |
| 北京市技术协作委员会: "《实用焊接手册》", 30 November 1985, 北京：水利电力出版社 * |
| 焊工操作技能快学快用》编写组: "《焊工操作技能快学快用》", 31 May 2015, 北京：中国建材工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112719517A (en) * | 2020-12-16 | 2021-04-30 | 中车眉山车辆有限公司 | Fusion welding connection process for special-shaped welding seams of steel structure car body |
| CN113145979A (en) * | 2021-04-29 | 2021-07-23 | 广船国际有限公司 | Welding method of ship window frame |
| CN115255561A (en) * | 2022-07-13 | 2022-11-01 | 上海江南长兴造船有限责任公司 | Welding method for fillet weld of ship descending at segmental erection position |
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Application publication date: 20200114 |