CN113146002A - Electric arc welding method - Google Patents
Electric arc welding method Download PDFInfo
- Publication number
- CN113146002A CN113146002A CN202110371470.9A CN202110371470A CN113146002A CN 113146002 A CN113146002 A CN 113146002A CN 202110371470 A CN202110371470 A CN 202110371470A CN 113146002 A CN113146002 A CN 113146002A
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- welding
- side wall
- arc
- connecting piece
- seam
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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
- B23K9/24—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
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
- B23K9/0052—Welding of pipe panels
-
- 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
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
Abstract
The invention discloses an electric arc welding method, which comprises the following steps: adjusting the wire tip of a welding wire extending out of an arc-shaped bent welding nozzle of the welding gun to face the side wall of the welding seam through a slewing mechanism, and adjusting the distance between the wire tip of the welding wire and the side wall by matching with a width adjusting mechanism; welding the side welding seam on one side of the side wall along the length direction of the welding seam; rotating the welding wire tip to face the other side wall of the welding seam through the rotating mechanism, and adjusting the distance between the welding wire tip and the other side wall by matching with the width adjusting mechanism; and completing the welding of the side welding seam on one side of the other side wall along the length direction of the welding seam. The invention controls the center of the welding gun to move and rotate along the center of the welding seam, so that the arc melting pool moves on the two side walls according to the preset control, and the welding of the welding seam of the whole side wall is completed. The welding tip adopts the arc bending design, and the welding rod is far away from an arc area and a molten pool area, is influenced by arc heat little, has small abrasion loss and thermal deformation, has more stable wire outlet angle, is convenient for the movement and accurate control of a welding gun molten pool point in the welding process, and greatly prolongs the service life.
Description
Technical Field
The invention relates to the technical field of welding, in particular to an electric arc welding method.
Background
The existing narrow-gap side wall fusion technology is widely applied to the field of gas shielded welding, and the self-shielded flux-cored wire has the advantages of excellent wind resistance, simplicity and convenience in operation and wide application in field welding operation.
When the self-shielded flux-cored wire is used for automatically welding the thick plate, due to the existence of welding slag, flux coatings and the like in the welding process, the automatic control difficulty is high, the research and development and the application of the narrow gap welding field are less, and the method mostly exists in a manual welding mode. In the thick plate welding occasion, in order to ensure the welding quality and the weld joint formation, the end face of the workpiece needs to be provided with a groove with a certain angle, so that the construction process difficulty is increased, and the welding efficiency is reduced. For example, in the field pipeline welding at present, the end face is mostly in a beveled form. In some scenes of field welding application, usually, very high requirements are required on welding time and limited by construction conditions, and a certain angle is difficult to process on the end face of a workpiece, for example, when steel rail repair welding is carried out on a railway line, because skylight points are short, the requirement on welding time is very strict, because the height dimension of the section of the steel rail is more than 140mm, the groove with a certain angle processed on the end face not only needs more operation time and processing equipment, but also increases the area of a welding seam, therefore, in order to improve the welding efficiency, a thick plate narrow gap welding technology with a flat end face is needed when self-protection flux-cored wire arc welding is carried out.
In the self-shielded flux-cored wire flat end surface narrow gap welding operation, in order to ensure the fusion amount in the welding process of the flat end surface of the workpiece, the wire outlet point of a welding gun should be as close to the flat end surface of the workpiece as possible, so that an electric arc molten pool is formed by the welding wire and the flat end surface of the workpiece, and the welding is realized; meanwhile, the minimum principle of electric arc is considered, the welding gun and the flat end face of the workpiece need to have a certain distance, so that the welding gun is ensured not to generate arcing with the flat end face except the welding wire point, the position of the welding wire extending out of the welding gun needs to be strictly controlled, the precise control of the fusion of the narrow-gap side wall is realized, and the coating and welding slag are ensured not to generate more influence on deposited metal. In the manual electric arc welding of the self-shielded flux-cored wire, the welding of the side wall is realized by manually inclining the angle of a welding gun, so that the defects of low welding seam precision, low welding efficiency, high labor intensity and the like are caused.
Therefore, in the technology of welding the flat end face and the narrow gap of the self-shielded flux-cored wire, the design of a welding gun is one of the key technologies. In the automatic welding process of the narrow-gap flat end surface of the self-shielded flux-cored wire, in order to ensure the fusion welding of the side wall of the narrow gap, the wire outlet point of the welding wire needs to be eccentric with a certain angle with the rotation center of a welding gun. The existing self-protection flux-cored wire welding gun adopts a mode of eccentrically processing the end part of a wire outlet point of the welding gun, although the welding gun is convenient to process and use and accurate in control of the initial wire outlet point, the eccentric position is too close to an arc area in the welding process, the welding gun has large thermal deformation and rapid abrasion, the consistency of the wire outlet angle cannot be ensured, particularly, in the long-time welding of a thick plate, the service life of the welding gun is short, and even the welding gun needs to be replaced in the welding process, so that the repeatability of the welding process and the quality of a joint after welding are influenced.
Disclosure of Invention
In order to solve the above problems, the present invention provides an arc welding method comprising the steps of:
the welding wire tip extending out of an arc-shaped bent welding nozzle of the welding gun is adjusted to face the side wall of a welding seam through a slewing mechanism, and the distance between the welding wire tip and the side wall is adjusted by matching with a width adjusting mechanism, wherein the curvature radius of the bent welding nozzle enables a welding rod not to be in arcing with the side wall during welding;
welding the side weld seam on one side of the side wall along the length direction of the weld seam;
rotating the welding wire tip to face the other side wall of the welding seam through the rotating mechanism, and adjusting the distance between the welding wire tip and the other side wall through the width adjusting mechanism;
and completing the welding of the side welding seam on one side of the other side wall along the length direction of the welding seam.
Optionally, an angle α between a projection of the welding wire in the projection plane of the weld width and the side wall ranges from 9 ° to 45 °, and an angle β between a projection of the welding wire in the horizontal projection plane and the side wall ranges from 35 ° to 90 °.
Optionally, the welding gun comprises:
one end of the welding power supply electrode connecting piece is connected with an electrode of a welding power supply, and the other end of the welding power supply electrode connecting piece is connected with a welding gun slewing mechanism connecting piece;
the welding gun slewing mechanism connecting piece is a hollow cylindrical body, and one end of the welding gun slewing mechanism connecting piece is connected with the slewing mechanism;
the welding rod is a hollow cylindrical body, and one end of the welding rod is coaxially connected to the other end of the welding gun slewing mechanism connecting piece;
the arc-shaped bending welding tip is a hollow cylindrical body formed by connecting a straight line section and a bending section, and the straight line section is connected with the other end of the welding rod.
Optionally, the swing mechanism comprises:
a first motor, a driving gear, a driven gear,
the output shaft of the first motor is coaxially connected with the driving gear, the driven gear is meshed with the gear teeth of the driving gear, and the driven gear is coaxially connected with the welding gun slewing mechanism connecting piece so as to drive the welding gun to slew.
Optionally, the width adjustment mechanism comprises:
a second motor, the output shaft of which is coaxially connected with the transmission screw rod,
the axial direction of the transmission screw is vertical to the side wall of the welding seam, the swing mechanism is fixedly connected with a nut screwed on the transmission screw,
the nut is connected with the sliding rail in a sliding mode.
Optionally, the welding rod is further fixed by a pressing fixed block, the pressing fixed block is provided with a central hole, the pressing fixed block penetrates into the welding gun rotating mechanism connecting piece from one side wall of the welding gun rotating mechanism connecting piece, so that the central hole of the pressing fixed block is concentric with the welding gun rotating mechanism connecting piece, the upper end of the welding rod penetrates through the central hole, and the fastening screw screwed into the other side wall of the welding gun rotating mechanism connecting piece abuts against the pressing fixed block, so that the central hole of the pressing fixed block pushes the welding rod, and the position of the welding rod is fixed.
Optionally, the weld width of the weld is between 15 and 23 mm.
Optionally, at least one of the pressing fixed block, the welding gun slewing mechanism connecting piece, the copper braided belt and the welding power supply electrode is made of brass materials.
Optionally, the straight line section is in threaded connection with the other end of the welding rod.
Optionally, the welding rod is made of chromium zirconium copper or brass and the welding tip is made of chromium zirconium copper material.
The arc welding method adopts arc bending, and can ensure that a certain distance is reserved between the wire tip of the welding wire and the rotation center of the welding gun. Compared with the existing eccentric welding nozzle, the welding rod is far away from an arc area and a molten pool area, is hardly influenced by arc heat, has small abrasion loss and thermal deformation, is more stable in wire outlet angle, is convenient for movement and accurate control of a welding gun molten pool point in the welding process, and greatly prolongs the service life. Practice shows that the existing eccentric welding nozzle usually needs to be replaced after 15 minutes of continuous welding, while the welding gun of the application can still meet the process requirements when continuously welding for 10 hours, and the welding quality of a welding joint is far higher than that of the traditional eccentric welding nozzle.
And because the field machining precision is limited usually, there is certain deviation in the width of the weld joint, the welding gun of the invention has a rotary motion around itself, the welding gun drives and rotates through the slewing mechanism, make the wire point of the welding wire and terminal surface form certain angle (35-90 °), thus guarantee the electric arc molten pool is in the included angle department of the level terminal surface and horizontal weld joint all the time, the welding gun moves and drives the electric arc centre to move along the sidewall to finish welding along the direction of weld joint, when the welding gun welds another sidewall, only need rotate the symmetrical angle, can finish the corresponding welding. In addition, the welding gun has adjustment movement along the width direction of the welding seam, so that the welding gun has high flexibility. The center of the welding gun is controlled to move and rotate along the center of the welding seam, so that the center of the electric arc is controlled to move on the two side walls according to the preset control, and the welding of the whole welding seam is completed.
The welding gun has the advantages of simple structure, low cost, convenience in use, high control precision and welding effect far higher than the prior art.
Drawings
The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic view showing an assembly of a welding gun with a swing mechanism and a width adjusting mechanism according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a weld gun illustrating an embodiment of the invention;
FIG. 3 is a cross-sectional view showing a welding tip according to an embodiment of the present invention;
FIG. 4 is a top view of a hold down block illustrating an embodiment of the present invention;
FIG. 5 is a side view of a hold down block illustrating an embodiment of the present invention;
FIG. 6 is a weld front view illustrating an embodiment of the present invention;
FIG. 7 is a top view of a weld illustrating an embodiment of the present invention;
FIG. 8 is a schematic flow chart illustrating an arc welding method according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described below with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in the present description, the drawings are not to scale and like reference numerals refer to like parts.
As shown in fig. 8, an arc welding method according to an embodiment of the present invention includes the steps of:
in step S1, the tip of the wire is adjusted by the swing mechanism toward the side wall of the weld ((i.e., the flat end face of the workpiece)), and the distance between the wire and the side wall is adjusted by the width adjustment mechanism. Wherein, the angle alpha between the projection of the welding wire in the projection plane of the welding seam width and the side wall ranges from 9 degrees to 45 degrees, and the angle beta between the projection of the welding wire in the horizontal projection plane and the side wall ranges from 35 degrees to 90 degrees.
Fig. 6 is a front view of the weld and fig. 7 is a top view of the weld. The angles alpha and beta ensure the positions of the welding wire and the side wall arc starting point molten pool, prevent the welding rod 2 from arc starting with the side wall, and enable the position of the welding seam molten pool and the like to meet the relevant technical requirements of the welding process. According to the welding direction, the accurate control of an arc area and a molten pool area is realized through alpha and beta angles, and the sufficient fusion amount of narrow-gap side wall welding is ensured. Wherein the narrow gap means that the width of a welding seam is between 15 and 23 mm.
And step S2, completing the welding of the side welding seam on one side of the side wall along the length direction of the welding seam.
And step S3, after the welding is finished on one side, the wire tip of the welding wire is rotated to the other side wall through the rotating mechanism, and the distance between the welding wire and the other side wall is adjusted through the width adjusting mechanism. As shown in fig. 7, the welding gun is adjusted to the corresponding position of the process requirement on the other side according to the direction shown by the arrow in fig. 7.
And step S4, completing the welding of the side welding seam on one side of the other side wall along the length direction of the welding seam.
The following describes the structure of an arc welding apparatus for arc welding of the present invention, which includes a turning mechanism, a width adjusting mechanism, and a welding torch. As shown in fig. 1, the swing mechanism includes a first motor 9, a driving gear 8, and a driven gear 7. The axis of the first motor 9 is vertical, the output shaft of the first motor is coaxially connected with the driving gear 8, and the driven gear 7 is parallel to the axis of the driving gear 8 and is meshed with the gear teeth, so that the driven gear 7 is driven to rotate. The driven gear 7 is coaxially connected with the welding gun rotating mechanism connecting piece 4 at the upper end of the welding gun, so that the welding gun can be driven to rotate.
The width adjusting mechanism comprises a second motor 10, a transmission screw 11, a slide rail 13, a welding gun connecting part 14 and a coupling. The axis of the second motor 10 is horizontally arranged, the output shaft thereof is coaxially connected with the transmission screw rod 11, the nut 131 is screwed on the transmission screw rod 11, and the nut 131 is slidably connected with the slide rail 13. The turning mechanism is connected to the nut 131, for example, the turning mechanism may be fixedly connected to the nut 131 through a welding gun connection component 14 integrated therewith, and the nut 131 drives the turning mechanism to move horizontally by the nut 131 being screwed to the driving screw 11 under the driving of the second motor 10. And, the axial direction of the drive screw 11 is perpendicular to the side wall of the weld, so that the position of the welding gun in the width direction of the weld can be adjusted.
It should be noted that the above-mentioned swing mechanism is only exemplary, for example, the first electric motor of the swing mechanism may be replaced by a hydraulic or pneumatic motor. For example, the output shaft of the first motor 9 is directly connected with the welding gun slewing mechanism connecting piece 4 through a coupling. Or other devices such as rack and pinion drives, worm and gear drives, chain drives, etc. may be used as the swing mechanism. Similarly, the width adjustment mechanism may have various alternatives, for example, a hydraulic cylinder, an air cylinder, a linear push rod, or the like may be used as the width adjustment mechanism. These alternatives are not described in detail here. In addition, the first motor and the second motor are preferably servo motors.
The wire feeding motor 100 is used for feeding a welding wire to the welding gun, the welding wire 16 finally penetrates out of the welding nozzle 2 of the welding gun, and a gap between the two sections of steel rails 15 is a welding seam.
The structure of the welding gun is described below, and as shown in fig. 2, the welding gun comprises an arc-shaped bent welding tip 1, a welding rod 2, a pressing fixed block 3, a welding gun rotating mechanism connecting piece 4, a copper braided belt 5 and a welding power supply electrode connecting piece 6.
The welding rod pressing fixing block 3, the welding gun rotating mechanism connecting piece 4, the copper woven belt 5, the welding power supply electrode connecting piece 6 and the like can be made of brass materials, and the whole welding gun is guaranteed to have very good electric conductivity. Although this embodiment does not exclude other conductive materials. The swing mechanism connecting piece 4 is connected with the welding power supply electrode connecting piece 6 through the copper woven belt 5, and the welding gun has the advantages of convenience in processing and manufacturing, simplicity in maintenance, good conductivity and the like, so that the whole welding gun is guaranteed to have good conductivity and the stability of a welding process in a welding process.
The welding gun rotating mechanism connecting piece 4 is used for being connected with the driven gear 7, so that the driven gear 7 drives the welding gun rotating mechanism connecting piece to rotate. The welding gun slewing mechanism connecting piece 4 is provided with a through vertical cavity, the upper end of the welding rod 2 coaxially penetrates into the cavity and is fixed, and the lower end of the welding rod 2 extends out.
The welding rod 2 is a cylindrical body with a hollow cavity, and the inner wall of the lower end of the welding rod 2 is provided with a thread with a certain length, so that the welding rod is conveniently connected with the arc-shaped bent welding nozzle 1. Only the welding tip needs to be replaced in the welding operation, so that the welding cost is greatly reduced. The welding rod 2 is replaced less in the using process, and the machining material of the welding rod 2 can be chromium, zirconium and copper. Because the arc zone and the molten pool zone are farther away, the thermal deformation is smaller, and in order to reduce the cost, materials with good electrical conductivity, such as brass, can also be adopted.
The arc-shaped bending welding tip 1 is shown in fig. 3 and comprises a straight section D1 and a bent section D2 which are integrally connected. The upper end of the straight line segment D1 is provided with an external thread which is used for being connected with the lower end of the welding rod 2 in a threaded manner. The connection of the correct guidance of the welding wire to the welding rod 2 is mainly achieved. The bending section D2 realizes the bending guiding function of the welding wire, the bending section D2 and the wire feeder 100 work together to ensure the stability of the eccentric distance (namely the wire outlet angle) of the welding wire 16, and the eccentric distance of the whole welding wire is related to the bending radius R. The arc-shaped bending welding tip can be made of chromium zirconium copper materials and has the advantages of good electrical conductivity, good thermal conductivity, high hardness, wear resistance, explosion resistance, crack resistance and high softening temperature.
The welding wire penetrates from the welding gun rotating mechanism connecting piece 4, enters the welding tip 1 through the welding rod 2 and penetrates out of the lower end of the welding tip 1. The welding wire is in the position of the straight line section D1 and the bent section D2 in the transition position from the straight line to the bent line, the position is far away from the arc area and the molten pool area, the bent section of the welding wire is in circular arc transition and has a larger curvature radius, and therefore compared with a traditional welding nozzle eccentric machining mode, the welding nozzle is smaller in wear, stronger in thermal deformation resistance, longer in service life and better in stability of maintaining the wire outlet angle of the welding wire in the welding process. And the width adjusting mechanism can adjust the position of the welding wire in the width direction of the welding seam, has stronger adaptability to the welding seam and higher motion control precision, and is very suitable for self-protection flux-cored wire flat end surface narrow gap automatic arc welding.
Fig. 4 is a schematic structural diagram of the pressing fixing block 3, and the pressing fixing block 3 has a central hole 31. The pressing fixing block 3 penetrates into the welding gun rotating mechanism connecting piece 4 from the side wall of one side of the welding gun rotating mechanism connecting piece 4, a center hole 31 of the pressing fixing block is concentric with a vertical cavity of the welding gun rotating mechanism connecting piece 4, the upper end of the welding rod 2 penetrates through the center hole 31, and the pressing fixing block 3 is abutted by screwing a fastening screw 17 into the side wall of the other side of the welding gun rotating mechanism connecting piece 4, so that the center hole 31 of the pressing fixing block 3 pushes the welding rod 2, the side wall of the welding rod 2 is abutted against the inner wall of the vertical cavity of the welding gun rotating mechanism connecting piece 4, and the position of the welding rod 2 is fixed.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method of arc welding comprising the steps of:
the welding wire tip extending out of an arc-shaped bent welding nozzle of the welding gun is adjusted to face the side wall of a welding seam through a slewing mechanism, and the distance between the welding wire tip and the side wall is adjusted by matching with a width adjusting mechanism, wherein the curvature radius of the bent welding nozzle enables a welding rod not to be in arcing with the side wall during welding;
welding the side weld seam on one side of the side wall along the length direction of the weld seam;
rotating the welding wire tip to face the other side wall of the welding seam through the rotating mechanism, and adjusting the distance between the welding wire tip and the other side wall through the width adjusting mechanism;
and completing the welding of the side welding seam on one side of the other side wall along the length direction of the welding seam.
2. The arc welding method of claim 1,
the angle alpha between the projection of the welding wire in the projection plane of the width of the welding seam and the side wall ranges from 9 degrees to 45 degrees, and the angle beta between the projection of the welding wire in the horizontal projection plane and the side wall ranges from 35 degrees to 90 degrees.
3. The arc welding method of claim 1,
the welding gun includes:
one end of the welding power supply electrode connecting piece is connected with an electrode of a welding power supply, and the other end of the welding power supply electrode connecting piece is connected with a welding gun slewing mechanism connecting piece;
the welding gun slewing mechanism connecting piece is a hollow cylindrical body, and one end of the welding gun slewing mechanism connecting piece is connected with the slewing mechanism;
the welding rod is a hollow cylindrical body, and one end of the welding rod is coaxially connected to the other end of the welding gun slewing mechanism connecting piece;
the arc-shaped bending welding tip is a hollow cylindrical body formed by connecting a straight line section and a bending section, and the straight line section is connected with the other end of the welding rod.
4. The arc welding method of claim 3,
the slewing mechanism comprises:
a first motor, a driving gear, a driven gear,
the output shaft of the first motor is coaxially connected with the driving gear, the driven gear is meshed with the gear teeth of the driving gear, and the driven gear is coaxially connected with the welding gun slewing mechanism connecting piece so as to drive the welding gun to slew.
5. The arc welding method of claim 3,
the width adjustment mechanism includes:
a second motor, the output shaft of which is coaxially connected with the transmission screw rod,
the axial direction of the transmission screw is vertical to the side wall of the welding seam, the swing mechanism is fixedly connected with a nut screwed on the transmission screw,
the nut is connected with the sliding rail in a sliding mode.
6. The arc welding method of claim 3,
the welding rod is fixed by compressing the fixing block, the compressing fixing block is provided with a center hole, the compressing fixing block penetrates into the welding gun rotating mechanism connecting piece from the side wall of one side of the welding gun rotating mechanism connecting piece, the center hole of the compressing fixing block is concentric with the welding gun rotating mechanism connecting piece, the upper end of the welding rod penetrates through the center hole, and the fastening screw screwed in from the side wall of the other side of the welding gun rotating mechanism connecting piece abuts against the compressing fixing block, so that the center hole of the compressing fixing block pushes the welding rod, and the position of the welding rod is fixed.
7. The arc welding method of claim 1,
the width of the welding seam is 15-23 mm.
8. The arc welding method of claim 6,
at least one of the pressing fixed block, the welding gun slewing mechanism connecting piece and the welding power supply electrode is made of brass materials.
9. The arc welding method of claim 3,
the straight line section is in threaded connection with the other end of the welding rod.
10. The arc welding method of claim 1,
the welding rod is made of chromium zirconium copper or brass, and the welding tip is made of chromium zirconium copper material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110371470.9A CN113146002A (en) | 2021-04-07 | 2021-04-07 | Electric arc welding method |
| PCT/CN2022/072995 WO2022213707A1 (en) | 2021-04-07 | 2022-01-20 | Arc welding apparatus and arc welding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110371470.9A CN113146002A (en) | 2021-04-07 | 2021-04-07 | Electric arc welding method |
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| CN113146002A true CN113146002A (en) | 2021-07-23 |
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| CN202110371470.9A Pending CN113146002A (en) | 2021-04-07 | 2021-04-07 | Electric arc welding method |
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| WO (1) | WO2022213707A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022213707A1 (en) * | 2021-04-07 | 2022-10-13 | 德州学院 | Arc welding apparatus and arc welding method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2216123A1 (en) * | 2009-02-05 | 2010-08-11 | Siemens Aktiengesellschaft | Protective gas pipe and contact pipe of a device for improved narrow gap welding |
| CN202045436U (en) * | 2010-11-16 | 2011-11-23 | 季关钰 | Thick plate narrow gap rotating arc welding machine |
| CN103071898B (en) * | 2012-11-12 | 2015-06-10 | 刘振英 | Narrow-gap welding nose with tilt angle device |
| CN104907678A (en) * | 2015-06-26 | 2015-09-16 | 武汉纳瑞格智能设备有限公司 | Non-tilting/lateral tilting ultra-narrow gap MAG/MIG welding contact tube |
| CN105665894B (en) * | 2016-04-19 | 2018-05-04 | 北京时代科技股份有限公司 | A kind of automatic row's welding bead device suitable for narrow gap welding |
| CN107009005B (en) * | 2017-06-08 | 2019-08-30 | 哈尔滨锅炉厂有限责任公司 | A kind of large-diameter pipe circumferential weld narrow-clearance submerged arc welding welding system |
| CN113146002A (en) * | 2021-04-07 | 2021-07-23 | 德州学院 | Electric arc welding method |
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- 2021-04-07 CN CN202110371470.9A patent/CN113146002A/en active Pending
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| WO2022213707A1 (en) * | 2021-04-07 | 2022-10-13 | 德州学院 | Arc welding apparatus and arc welding method thereof |
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