CN114833430A - Argon arc welding seam welding method suitable for fillet weld of thin-wall part - Google Patents
Argon arc welding seam welding method suitable for fillet weld of thin-wall part Download PDFInfo
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- CN114833430A CN114833430A CN202210561036.1A CN202210561036A CN114833430A CN 114833430 A CN114833430 A CN 114833430A CN 202210561036 A CN202210561036 A CN 202210561036A CN 114833430 A CN114833430 A CN 114833430A
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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
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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
- B23K9/235—Preliminary treatment
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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
- B23K9/32—Accessories
Abstract
The invention relates to an argon arc welding seam welding method suitable for a fillet weld of a thin-wall part, which comprises the following steps of: step 1: polishing the surface to be welded and the periphery by using 400-mesh sand paper; step 2: wiping the surface to be welded and the position 20 mm-30 mm around the surface by alcohol/acetone, and drying by compressed air passing through an oil-water separator; and step 3: firstly, performing tack welding between the part A and the part B; and 4, step 4: installing a tool C, and fixing two sides by using a C-shaped clamp; and 5: welding the part A and the part B along a welding section between the part A and the part B by adopting a welding current of 20-40A and not filling welding wires; step 6: and welding the part A and the part B along a welding section between the part A and the part B by adopting the welding current of 30-50A and the diameter of a welding wire of 0.5-1mm, wherein the welding seam is covered by the welding section without filling the welding wire by adopting the welding wire. According to the invention, by adding the tool and optimizing the welding track, the welding seam has good quality and good stability.
Description
Technical Field
The invention belongs to the field of welding of precise thin-walled parts, and particularly relates to an argon arc welding seam welding method suitable for fillet welds of thin-walled parts.
Background
With the continuous development of science and technology, the product performance is gradually improved, and the requirements on parts are also gradually improved; a plurality of part structures need to achieve the purpose of weight reduction while achieving the design of a complex structure. The complex structure also presents new challenges to the welding technology of the parts. For the fillet weld of the thin-wall part, the undercut is generated by adopting argon arc welding for conventional welding, and the performance of a welding joint hardly meets the design requirement.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide an argon arc welding seam welding method suitable for fillet welds of thin-wall parts.
In order to achieve the purpose, the invention adopts the following technical scheme:
an argon arc welding seam welding method suitable for fillet welds of thin-wall parts,
the method comprises the following steps:
step 1: polishing the surface to be welded and the position 20-25 mm away from the periphery of the surface to be welded by 400-mesh sand paper to expose the metallic luster;
step 2: wiping the surface to be welded and the position 20 mm-30 mm around the surface to be welded by alcohol/acetone, and drying by compressed air passing through an oil-water separator;
and step 3: firstly, performing tack welding between the part A and the part B;
and 4, step 4: installing a tool C, fixing two sides of the tool C by using a C-shaped clamp, and ensuring that the tool C is flush with the part B;
and 5: welding the part A and the part B along a welding section between the part A and the part B by adopting a welding current of 20-40A and not filling welding wires;
step 6: and welding the part A and the part B along a welding section between the part A and the part B by adopting the welding current of 30-50A and the diameter of a welding wire of 0.5-1mm, wherein the welding seam is covered by the welding section without filling the welding wire by adopting the welding wire.
Preferably, in the argon arc welding seam welding method for the fillet weld of the thin-wall part, the welding point of the positioning welding in the step 3 is covered by a subsequent formal weld, wherein the distance between the arc starting points is greater than the distance between the adjacent weld seams of the part A and the part B.
Preferably, in the argon arc welding seam welding method for the fillet weld of the thin-wall part, the tack weld in the step 3 is covered by the weld when passing through the step 5.
Preferably, the argon arc welding method for the fillet weld of the thin-wall part is characterized in that the tool C is made of red copper, the thickness of the tool C is larger than or equal to 4mm, the tool C is of a profiling structure of the part B, and the tool C is packaged and attached to the part B.
Preferably, the argon arc welding method is suitable for fillet weld of the thin-wall part, and the length of the tool C is more than or equal to the length L +30mm of the weld.
Preferably, the argon arc welding method for the fillet weld of the thin-wall part is characterized in that the weld joint between the part A and the part B forms an L-shaped structural weld joint from an arc starting point to a welding end to an arc ending section.
Preferably, the argon arc welding seam welding method is suitable for the fillet weld of the thin-wall part,
the method comprises the following steps:
aiming at the material quality of the high-temperature alloy GH3536, the parts A and B are welded,
step 1: using 400-mesh sand paper to leak metal luster on the surface to be welded and the position 20mm away from the periphery;
step 2: wiping the surface to be welded and the position 20mm near the surface to be welded by alcohol/acetone, and drying by compressed air passing through an oil-water separator;
and step 3: firstly, performing tack welding between the part A and the part B;
and 5: welding the part A and the part B along a welding section between the part A and the part B by adopting welding current 30A without filling welding wires;
step 6: and welding the part A and the part B along a welding section between the part A and the part B by using a welding current of 40A and a welding wire with the diameter of 0.5mm, wherein the welding of the welding wire covers the welding section without wire filling.
By the scheme, the invention at least has the following advantages:
1. the invention provides a thin-wall part angle welding technology, which achieves good and stable weld joint quality by adding a tool and optimizing a welding track. The method is suitable for fillet weld of thin-wall parts; meanwhile, the weld joint is well formed, the end section is well formed, the problems of arc-retracting pits and the like are avoided, and the quality is excellent; and the quality of the welding seam is stable.
2. According to the invention, a metallographic microscope is used for observing the welding joint, the weld quality is represented in a microscopic manner, and the weld quality is ensured.
The following detailed description of the preferred embodiments of the present invention is provided for the purpose of illustrating the invention and is provided in the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic representation of the microstructure features of the weld joint according to one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "vertical", "horizontal", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and for simplification of description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or vertical, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Examples
As shown in fig. 1, a method for argon arc welding seam welding of fillet weld of thin-wall parts,
the method comprises the following steps:
step 1: polishing the surface to be welded and the position 20-25 mm away from the periphery with 400-mesh sand paper to expose the metallic luster;
step 2: wiping the surface to be welded and the position 20 mm-30 mm around the surface by alcohol/acetone, and drying by compressed air passing through an oil-water separator;
and step 3: firstly, positioning welding is carried out between the part A and the part B;
and 4, step 4: installing a tool C, fixing two sides of the tool C by using a C-shaped clamp, and ensuring that the tool C is flush with the part B;
and 5: welding the part A and the part B along a welding section between the part A and the part B by adopting a welding current of 20-40A and not filling welding wires;
step 6: and welding the part A and the part B along a welding section between the part A and the part B by adopting the welding current of 30-50A and the diameter of a welding wire of 0.5-1mm, wherein the welding seam is covered by the welding section without filling the welding wire by adopting the welding wire.
In the invention, the welding spot of the tack welding in the step 3 is covered by the following formal welding spot, wherein the distance between the arc starting points is larger than the interval between the adjacent welding spots of the part A and the part B.
In the invention, the tack weld in the step 3 is covered by the weld seam when passing through the step 5.
The tool C is made of red copper, the thickness of the tool C is larger than or equal to 4mm, the tool C is of a profiling structure of the part B, and the tool C is packaged and attached.
The length of the tool C is more than or equal to the length L +30mm of the welding line.
The welding seam between the part A and the part B forms an L-shaped welding seam from an arc starting point to a welding end to an arc ending section.
Example one
Based on the embodiment, as shown in fig. 2, an argon arc welding method for a fillet weld of a thin-wall part includes the following steps:
aiming at the material quality of the high-temperature alloy GH3536, the parts A and B are welded,
step 1: using 400-mesh sand paper to leak metal luster on the surface to be welded and the position 20mm away from the periphery;
step 2: wiping the surface to be welded and the position 20mm near the surface to be welded by alcohol/acetone, and drying by compressed air passing through an oil-water separator;
and step 3: firstly, performing tack welding between the part A and the part B;
and 5: welding the part A and the part B along a welding section between the part A and the part B by adopting welding current 30A without filling welding wires;
step 6: and welding the part A and the part B along a welding section between the part A and the part B by using a welding current of 40A and a welding wire with the diameter of 0.5mm, wherein the welding of the welding wire covers the welding section without wire filling.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. An argon arc welding seam welding method suitable for fillet welds of thin-wall parts is characterized in that,
the method comprises the following steps:
step 1: polishing the surface to be welded and the position 20-25 mm away from the periphery of the surface to be welded by 400-mesh sand paper to expose the metallic luster;
step 2: wiping the surface to be welded and the position 20 mm-30 mm around the surface by alcohol/acetone, and drying by compressed air passing through an oil-water separator;
and step 3: firstly, positioning welding is carried out between the part A and the part B;
and 4, step 4: installing a tool C, fixing two sides of the tool C by using a C-shaped clamp, and ensuring that the tool C is flush with the part B;
and 5: welding the part A and the part B along a welding section between the part A and the part B by adopting a welding current of 20-40A and not filling welding wires;
step 6: and welding the part A and the part B along a welding section between the part A and the part B by adopting the welding current of 30-50A and the diameter of a welding wire of 0.5-1mm, wherein the welding seam is covered by the welding section without filling the welding wire by adopting the welding wire.
2. The argon arc welding seam welding method suitable for the fillet weld of the thin-wall part according to claim 1, characterized in that: and (3) covering the welding spot of the positioning welding in the step (3) by a subsequent formal welding seam, wherein the distance between the arc starting points is larger than the interval between the adjacent welding seams of the part A and the part B.
3. The argon arc welding seam welding method suitable for the fillet weld of the thin-wall part according to claim 1, characterized in that: the tack weld in step 3 is covered by the weld seam as it passes through step 5.
4. The argon arc welding seam welding method suitable for the fillet weld of the thin-wall part according to claim 1, characterized in that: the tool C is made of red copper, the thickness of the tool C is larger than or equal to 4mm, the tool C is of a profiling structure of the part B, and the tool C is packaged and attached.
5. The argon arc welding seam welding method suitable for the fillet weld of the thin-wall part according to claim 1, characterized in that: the length of the tool C is more than or equal to the length L +30mm of the welding line.
6. The argon arc welding seam welding method suitable for the fillet weld of the thin-wall part according to claim 1, characterized in that: and the welding seam between the part A and the part B forms an L-shaped welding seam from an arc starting point to a welding end to an arc ending section.
7. The argon arc welding seam welding method suitable for the fillet weld of the thin-wall part according to claim 6, characterized in that: the length L1 of the arc-contracting section is more than or equal to 2 mm.
8. The argon arc welding method for the fillet weld of the thin-wall part according to any one of claims 1 to 7,
the method comprises the following steps:
aiming at the material quality of the high-temperature alloy GH3536, the parts A and B are welded,
step 1: using 400-mesh sand paper to leak metal luster on the surface to be welded and the position 20mm away from the periphery;
step 2: wiping the surface to be welded and the position 20mm near the surface with alcohol/acetone, and drying the surface with compressed air passing through an oil-water separator;
and step 3: firstly, performing tack welding between the part A and the part B;
and 5: welding the part A and the part B along a welding section between the part A and the part B by adopting welding current 30A without filling welding wires;
step 6: and welding the part A and the part B along a welding section between the part A and the part B by using a welding current of 40A and a welding wire with the diameter of 0.5mm, wherein the welding of the welding wire covers the welding section without wire filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210561036.1A CN114833430A (en) | 2022-05-23 | 2022-05-23 | Argon arc welding seam welding method suitable for fillet weld of thin-wall part |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210561036.1A CN114833430A (en) | 2022-05-23 | 2022-05-23 | Argon arc welding seam welding method suitable for fillet weld of thin-wall part |
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| CN114833430A true CN114833430A (en) | 2022-08-02 |
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