CN111195761A - Double-pulse TIG welding process for automatic spiral weld joint on outer surface of aluminum alloy spiral welded pipe - Google Patents
Double-pulse TIG welding process for automatic spiral weld joint on outer surface of aluminum alloy spiral welded pipe Download PDFInfo
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- CN111195761A CN111195761A CN201911382051.4A CN201911382051A CN111195761A CN 111195761 A CN111195761 A CN 111195761A CN 201911382051 A CN201911382051 A CN 201911382051A CN 111195761 A CN111195761 A CN 111195761A
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- welding
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- double
- aluminum alloy
- welded pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/004—Filling of continuous seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/032—Seam welding; Backing means; Inserts for three-dimensional seams
- B23K9/0325—Seam welding; Backing means; Inserts for three-dimensional seams helicoidal seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
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- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a double-pulse TIG welding process for an automatic spiral weld joint on the outer surface of an aluminum alloy spiral welded pipe, and relates to the field of spiral welded pipe welding. The invention comprises a spiral seam on the outer surface of a pipe body and a TIG welding gun. The device is arranged on a main beam of an automatic aluminum alloy spiral welded pipe forming machine, and the outer side of the inner surface welding device. After the inner surface is welded, a V-shaped outer slope opening is milled at the joint of the spiral weld to be welded on the outer surface of the cylinder, and when the temperature of the weld reaches the temperature required by the process, double-pulse TIG welding is started. On the automatic production line of the spiral welded pipe, the heat input of the welding seam can be controlled by adjusting and controlling the double-pulse current and the base value current, so that the size and the quality of the welding seam are controlled. And (3) filling protective gas during welding, wherein the protective gas is 100% of carbon dioxide.
Description
Technical Field
The invention relates to the technical field of spiral welded pipe welding, in particular to a double-pulse TIG welding process for an automatic spiral weld joint on the outer surface of an aluminum alloy spiral welded pipe.
Background
In a traditional manual welding process, the steps are mainly as follows: single pulse TIG welding
The traditional process has poor penetrating power, easy welding and penetration and low flaw detection qualification rate. Is not suitable for the automatic production of the spiral welded pipe production line. Therefore, a double-pulse TIG welding process for the spiral weld joint on the outer surface of the automatic aluminum alloy spiral welded pipe is provided.
Disclosure of Invention
The invention aims to provide a double-pulse TIG welding process for an automatic spiral weld joint on the outer surface of an aluminum alloy spiral welded pipe, which aims to solve the problems in the background technology. The invention relates to a double-pulse TIG welding process for an automatic spiral weld joint on the outer surface of an aluminum alloy spiral welded pipe, which comprises a spiral weld joint on the outer surface of a pipe body and a TIG welding gun, and is characterized in that: the method comprises the following steps:
the method comprises the following steps: the device is arranged on a main beam of an automatic aluminum alloy spiral welded pipe forming machine, and the outer side of the inner surface welding device. After the inner surface is welded, a V-shaped outer slope opening is milled at the joint of the spiral weld to be welded on the outer surface of the cylinder, and when the temperature of the weld reaches the temperature required by the process, double-pulse TIG welding is started. On the automatic production line of the spiral welded pipe, the heat input of the welding seam can be controlled by adjusting and controlling the double-pulse current and the base value current, so that the size and the quality of the welding seam are controlled. And (3) filling protective gas during welding, wherein the protective gas is 100% of carbon dioxide.
Preferably, the thickness of the plate for forming the aluminum alloy spiral welded pipe is 5-20 mm.
Preferably, the opening angle of the V-shaped groove is controlled to be 63-70 degrees according to the thickness of the plate.
Preferably, the specific process parameters are as follows:
| welding process | Welding current | Voltage of |
| Double pulse TIG welding | 180-240A | 18-25V |
Compared with the prior art, the invention has the beneficial effects that:
1. a double-pulse TIG welding method for spiral welded pipe production line features high penetrating power, not easy to be welded through and high qualified rate of flaw detection up to 95%.
2. The welding process has no splash, the heat affected zone is small, the welding advantage is obvious especially for thin plates, the consistency of the waveform output of energy can be ensured all the time, the fusion depth and the weld joint stacking height are fully kept consistent, the forming is attractive, and the beautiful fish scale pattern effect can be realized during automatic welding.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the following drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of a spiral weld V-shaped port
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1, the present invention provides a technical solution: the utility model provides a double pulse TIG welding process for automizing aluminum alloy spiral welded pipe surface spiral welding seam, includes body surface spiral seam 1, TIG welder 2, its characterized in that: the method comprises the following steps:
the method comprises the following steps: the device is arranged on a main beam of an automatic aluminum alloy spiral welded pipe forming machine, and the outer side of the inner surface welding device. After the inner surface is welded, a V-shaped outer slope is milled at the joint of the spiral weld joint 1 to be welded on the outer surface of the cylinder, and when the temperature of the weld joint reaches the temperature required by the process, double-pulse TIG welding 2 is started. On the automatic production line of the spiral welded pipe, the heat input of the welding seam can be controlled by adjusting and controlling the double-pulse current and the base value current, so that the size and the quality of the welding seam are controlled. And (3) filling protective gas during welding, wherein the protective gas is 100% of carbon dioxide.
The specific parameters are as follows:
| welding process | Welding current | Voltage of |
| Double pulse TIG welding | 180A | 18V |
As a further optimization of the invention, the thickness of the cylinder is 5 mm.
As a further optimization of the invention, the opening angle of the V-shaped outer groove in the first step is 63 degrees.
Example two:
referring to fig. 1, the present invention provides a technical solution: the utility model provides a double pulse TIG welding process for automizing aluminum alloy spiral welded pipe surface spiral welding seam, includes body surface spiral seam 1, TIG welder 2, its characterized in that: the method comprises the following steps:
the method comprises the following steps: the device is arranged on a main beam of an automatic aluminum alloy spiral welded pipe forming machine, and the outer side of the inner surface welding device. After the inner surface is welded, a V-shaped outer slope is milled at the joint of the spiral weld joint 1 to be welded on the outer surface of the cylinder, and when the temperature of the weld joint reaches the temperature required by the process, double-pulse TIG welding 2 is started. On the automatic production line of the spiral welded pipe, the heat input of the welding seam can be controlled by adjusting and controlling the double-pulse current and the base value current, so that the size and the quality of the welding seam are controlled. And (3) filling protective gas during welding, wherein the protective gas is 100% of carbon dioxide.
The specific parameters are as follows:
| welding process | Welding current | Voltage of |
| Double pulse TIG welding | 210A | 21V |
As a further optimization of the invention, the thickness of the cylinder is 12 mm.
As a further optimization of the present invention, the opening angle of the "V" shaped outer groove in the first step is 66 °.
Example three:
referring to fig. 1, the present invention provides a technical solution: the utility model provides a double pulse TIG welding process for automizing aluminum alloy spiral welded pipe surface spiral welding seam, includes body surface spiral seam 1, TIG welder 2, its characterized in that: the method comprises the following steps:
the method comprises the following steps: the device is arranged on a main beam of an automatic aluminum alloy spiral welded pipe forming machine, and the outer side of the inner surface welding device. After the inner surface is welded, a V-shaped outer slope is milled at the joint of the spiral weld joint 1 to be welded on the outer surface of the cylinder, and when the temperature of the weld joint reaches the temperature required by the process, double-pulse TIG welding 2 is started. On the automatic production line of the spiral welded pipe, the heat input of the welding seam can be controlled by adjusting and controlling the double-pulse current and the base value current, so that the size and the quality of the welding seam are controlled. And (3) filling protective gas during welding, wherein the protective gas is 100% of carbon dioxide.
The specific parameters are as follows:
| welding process | Welding current | Voltage of |
| Double pulse TIG welding | 240A | 24V |
As a further optimization of the invention, the thickness of the cylinder is 20 mm.
As a further optimization of the present invention, the opening angle of the "V" shaped outer groove in the first step is 70 °.
Claims (4)
1. The utility model provides a double pulse TIG welding process for automizing aluminum alloy spiral welded pipe surface spiral welding seam, includes body surface spiral seam (1) and TIG welder (2), its characterized in that: the method comprises the following steps:
the method comprises the following steps: the device is arranged on a main beam of an automatic aluminum alloy spiral welded pipe forming machine, and the outer side of the inner surface welding device. After the inner surface is welded, a V-shaped outer slope is milled at the joint of the spiral weld joint (1) to be welded on the outer surface of the cylinder, and when the temperature of the weld joint reaches the temperature required by the process, double-pulse TIG welding (2) is carried out. On the automatic production line of the spiral welded pipe, the heat input of the welding seam can be controlled by adjusting and controlling the double-pulse current and the base value current, so that the size and the quality of the welding seam are controlled. And (3) filling protective gas during welding, wherein the protective gas is 100% of carbon dioxide.
2. A double pulse TIG welding process for automated helical welds on the outside surface of aluminum alloy spiral welded tubes as recited in claim 1 wherein: the thickness of the plate for forming the aluminum alloy spiral welded pipe is 5-20 mm.
3. A double pulse TIG welding process for automated helical welds on the outside surface of aluminum alloy spiral welded tubes as recited in claim 1 wherein: the opening angle of the V-shaped outer groove is controlled to be 63-70 degrees according to the thickness of the plate.
4. A double pulse TIG welding process for automated helical welds on the outside surface of aluminum alloy spiral welded tubes as recited in claim 1 wherein: the specific parameters of the process are as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911382051.4A CN111195761A (en) | 2019-12-28 | 2019-12-28 | Double-pulse TIG welding process for automatic spiral weld joint on outer surface of aluminum alloy spiral welded pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911382051.4A CN111195761A (en) | 2019-12-28 | 2019-12-28 | Double-pulse TIG welding process for automatic spiral weld joint on outer surface of aluminum alloy spiral welded pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111195761A true CN111195761A (en) | 2020-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911382051.4A Pending CN111195761A (en) | 2019-12-28 | 2019-12-28 | Double-pulse TIG welding process for automatic spiral weld joint on outer surface of aluminum alloy spiral welded pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111195761A (en) |
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2019
- 2019-12-28 CN CN201911382051.4A patent/CN111195761A/en active Pending
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Application publication date: 20200526 |
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| WD01 | Invention patent application deemed withdrawn after publication |