CN117340624A - Efficient butt welding device and method for small-diameter thin-wall stainless steel pipe - Google Patents
Efficient butt welding device and method for small-diameter thin-wall stainless steel pipe Download PDFInfo
- Publication number
- CN117340624A CN117340624A CN202311460013.2A CN202311460013A CN117340624A CN 117340624 A CN117340624 A CN 117340624A CN 202311460013 A CN202311460013 A CN 202311460013A CN 117340624 A CN117340624 A CN 117340624A
- Authority
- CN
- China
- Prior art keywords
- welding
- pipe
- stainless steel
- gear
- diameter thin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 121
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 39
- 239000010935 stainless steel Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005520 cutting process Methods 0.000 claims abstract description 47
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 18
- 239000010937 tungsten Substances 0.000 claims description 18
- 229910052721 tungsten Inorganic materials 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims 1
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 22
- 229910052786 argon Inorganic materials 0.000 abstract description 11
- 239000010953 base metal Substances 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- NGONBPOYDYSZDR-UHFFFAOYSA-N [Ar].[W] Chemical compound [Ar].[W] NGONBPOYDYSZDR-UHFFFAOYSA-N 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002915 spent fuel radioactive waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
-
- 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
- B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides a high-efficiency butt welding device and method for small-diameter thin-wall stainless steel pipes, wherein the device comprises a pipeline cutting tool and a TIG welding machine, the pipeline cutting tool comprises a base, a rotating disk, a cutting machine and a plurality of top fixing clamping blocks, the rotating disk is rotatably arranged on the base, an inner hole is formed in the middle of the rotating disk, the cutting machine is arranged on the rotating disk, each top fixing clamping block surrounds the inner hole and is arranged on the base, each top fixing clamping block can slide along the radial direction of the inner hole, and the TIG welding machine comprises a welding machine body and a closed pipe welding gun. The invention has the beneficial effects that: by adopting a self-melting mode of the base metal, the pipe fitting can be directly assembled after being cut, a groove is not required to be machined, and the cutter is not offset compared with manual cutting, so that the situations of flash, burrs, base metal cutting and the like are reduced, the cutting quality of the pipe orifice is improved, the problem that the welding quality of welding seams, such as corrosion resistance and the like, is easily reduced due to the process of manual argon tungsten-arc welding is solved, and the welding quality is ensured.
Description
Technical Field
The invention relates to the technical field of pipeline welding, in particular to a device and a method for efficient butt welding of a small-diameter thin-wall stainless steel pipe.
Background
At present, in the nuclear chemical engineering system engineering in China, a large number of equipment and system stainless steel pipes are required to be prefabricated in a workshop and installed on site, wherein the number of the small-wall-thickness and small-diameter stainless steel pipes is very large, a spent fuel post-treatment factory is taken as an example, the total number of welded junctions of the stainless steel pipes is about 20000, the pipe materials are 022Cr19Ni10 austenitic stainless steel, the wall thickness is less than or equal to 3mm, the traditional manual argon tungsten arc welding is still adopted at present, and weldments are welded under the protection of inert gas, so that almost all metals can be welded without using welding flux. The welding process of the welding method has good performance, is bright in arc, and can observe the electric arc and a molten pool; the electric arc burns stably, no splashing exists, slag is not required after welding, and the welding seam is formed attractive; the full-position welding can be performed, is an ideal welding method for realizing single-sided welding back forming, and is suitable for welding thinner materials.
As shown in fig. 1, in the manufacturing and installation process of the nuclear chemical stainless steel pipeline, ordinary manual argon tungsten-arc welding is mostly adopted, and as the ordinary manual argon tungsten-arc welding cannot perform one-time penetration on the base metal due to insufficient arc stiffness, the ordinary manual argon tungsten-arc welding generally needs to cut the port of the pipe fitting 100 into the groove 100a, and multilayer multi-pass welding and multi-pass wire filling welding are adopted, so that the welding efficiency is low, the production cost is high, and the deformation of the base metal is large due to multiple heat input. The manual argon tungsten-arc welding has high requirements on the technical level of butt welding, and under the condition of extremely large welding engineering quantity of stainless steel pipelines, a large number of argon arc welders are recruited to greatly increase the labor cost of companies, and the manual argon tungsten-arc welding is greatly influenced by the characteristics of a process method and human factors, so that the welding quality of the welding seam 200, such as corrosion resistance, is easily reduced in the welding process, and the welding quality is extremely unfavorable for the nuclear engineering with high safety level.
Disclosure of Invention
In view of the above, in order to meet the requirements of workshop manufacture and field installation of stainless steel pipes and solve the problem that the welding quality of welding seams, such as corrosion resistance, is easily reduced due to the manual argon tungsten-arc welding process, the embodiment of the invention provides a device and a method for high-efficiency butt welding of small-diameter thin-wall stainless steel pipes.
The embodiment of the invention provides a high-efficiency butt welding device for a small-diameter thin-wall stainless steel tube, which comprises the following components:
the pipeline cutting tool comprises a base, a rotary disc, a cutting machine and a plurality of jacking clamping blocks, wherein the rotary disc is rotatably arranged on the base, an inner hole is formed in the middle of the rotary disc, the cutting machine is arranged on the rotary disc, each jacking clamping block surrounds the inner hole and is arranged on the base, and each jacking clamping block can radially slide along the inner hole;
and the TIG welding machine comprises a welding machine body and a closed pipe welding gun, wherein a rotatable tungsten electrode is arranged in the closed pipe welding gun, and the closed pipe welding gun can be used for clamping the ends of two sections of aligned pipe fittings to be welded, so that the ends of the two sections of aligned pipe fittings are welded through the tungsten electrode.
Further, the pipeline cutting tool further comprises a cutting hand wheel, the cutting hand wheel is provided with a driving gear, gear teeth are arranged on the edge of the rotating disc, and the driving gear is meshed with the gear teeth.
Further, the pipeline cutting tool further comprises a driving mechanism, the driving mechanism comprises a clamping bolt, a first worm, a worm wheel and a gear disc, the clamping bolt is in threaded connection with the base, the first worm is arranged at the end part of the clamping bolt, the worm wheel is rotatably mounted on the base and meshed with the first worm, an inner gear is arranged on the inner wall of the gear disc, an outer gear is arranged on the outer wall of the gear disc, the gear disc is rotatably mounted on the base, the inner gear is meshed with the worm wheel, a second worm is arranged at the tail end of each jacking and fixing clamping block, and each second worm is respectively meshed with the outer gear.
Further, the external gear includes a plurality of evenly distributed gear segments.
Further, a fixed groove is formed in the rotary disc, and the cutting machine is detachably arranged in the fixed groove.
Further, the upper portion of the base is provided with a fixed disc, and the top of the fixed disc is provided with a hoisting hole.
Further, a locking handle is further arranged on the fixed disc and used for locking the rotating disc.
In addition, the embodiment of the invention also provides a high-efficiency butt welding method for the small-diameter thin-wall stainless steel pipe, which uses the high-efficiency butt welding device for the small-diameter thin-wall stainless steel pipe and comprises the following steps of:
s1, inserting the end part of a pipe fitting into an inner hole of the rotating disc, propping the outer wall of the pipe fitting tightly through each propping clamping block, starting the cutting machine, rotating the rotating disc to enable the cutting machine to cut the end part of the pipe fitting around the pipe fitting for one circle, enabling the end part of the pipe fitting to obtain a flush port, and repeating the process to cut the end part of another pipe fitting to obtain a flush port;
s2, aligning ports of the two pipe fittings and clamping the ports into the closed pipe welding gun;
and S3, controlling the tungsten electrode of the closed pipe welding gun to rotate around the port splicing seam of the two pipe fittings, welding the ports of the two pipe fittings, and melting the ports of the two pipe fittings to generate a molten pool so as to finish welding forming.
Further, the step S3 further includes inputting inert shielding gas to the front and back surfaces of the two pipe ports.
Further, in the step 3, when the tungsten electrode of the sealed tube welding gun rotates around the port splice joint of the two tubes, the splice joint is located at the center of the tungsten electrode of the sealed tube welding gun.
The technical scheme provided by the embodiment of the invention has the beneficial effects that:
according to the high-efficiency butt welding device and method for the small-diameter thin-wall stainless steel pipe, disclosed by the invention, the pipe cutting tool is used for cutting and blanking the pipe, the flush port is obtained as a welded junction, then the sealed pipe welding gun is used for welding the welded junction, the conventional manual cutting and polishing groove and manual argon tungsten-arc welding for welding the welded junction of the stainless steel pipe are replaced, the phenomenon that a base material is layered and the like due to poor cutting quality cannot occur during assembly, and compared with the manual groove opening and wire filling welding mode, the high-efficiency butt welding device and method for the small-diameter thin-wall stainless steel pipe are used for welding, and the pulse arc welding is adopted, and has the advantages that the welding heat is concentrated, the arc stiffness is high, the base material can be welded through once, the pipe is self-melted, the assembly can be directly carried out after the pipe is cut, a groove is not required to be processed, the cutter is relatively offset compared with the manual cutting, so that the occurrence of the conditions of flash, burrs, cut and the base material cut is reduced, the problem that the corrosion resistance and the like of the welding quality of the welded pipe is easily caused by the manual argon tungsten-arc welding process is solved, and the welding quality is reduced.
Drawings
FIG. 1 is a schematic diagram of a stainless steel pipe in the background art using conventional manual argon tungsten-arc welding;
FIG. 2 is a schematic diagram of a pipe cutting tool of the efficient butt welding device for small-diameter thin-wall stainless steel pipes;
FIG. 3 is a schematic view of a TIG welder of the efficient butt welding device for small-diameter thin-wall stainless steel pipes;
fig. 4 is a schematic diagram of the welding principle of the efficient butt welding device for the small-diameter thin-wall stainless steel pipes.
In the figure: 100. a pipe fitting; 100a, groove; 200. welding seams; 1. pipeline cutting tool; 101. a base; 102. a fixed plate; 103. a rotating disc; 104. a cutting machine; 105. a clamping block is fixedly propped; 106. cutting a hand wheel; 107. clamping a bolt; 108. a locking handle; 109. a fixing groove; 110. a hoisting hole; 201. a welder body; 202. a welding gun; 202a, tungsten electrodes; 300. and (3) a molten pool.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings. The following presents a preferred one of a number of possible embodiments of the invention in order to provide a basic understanding of the invention, but is not intended to identify key or critical elements of the invention or to delineate the scope of the invention.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.
It is further noted that unless specifically stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 2 and 3, the embodiment of the invention provides a high-efficiency butt welding device for small-diameter thin-wall stainless steel pipes, which is applied to welding stainless steel pipes with wall thickness smaller than 3mm and mainly comprises a pipeline cutting tool 1 and a TIG welding machine.
As shown in fig. 2, the pipe cutting tool 1 mainly includes a base 101, a rotating disc 103, a cutting machine 104, and a plurality of top fixing clamping blocks 105.
The base 101 mainly plays a supporting role, a fixed disc 102 is arranged on the upper portion of the base 101, the fixed disc 102 is annular, and the fixed disc 102 is vertically arranged.
The rotating disc 103 is rotatably mounted on the base 101, specifically rotatably mounted on the fixed disc 102, and coaxially disposed with the fixed disc 102. An inner hole is formed in the middle of the rotating disc 103, and the inner hole penetrates through the fixed disc 102 at the same time. The top of the fixed disc 102 is also provided with a lifting hole 110, and the lifting hole 110 can be used for carrying out field and workshop lifting movement on the efficient butt welding device for the small-diameter thin-wall stainless steel tube.
The cutter 104 is mounted on the rotating disc 103. Specifically, a fixing groove 109 is formed in the rotating disc 103, the cutter 104 is detachably mounted in the fixing groove 109, the front end of the cutter 104 faces the axis of the inner hole, and the casing of the cutter 104 is locked and fixed with the fixing groove 109 through a fastener.
The cutter 104 can be driven to rotate by rotating the rotating disc 103. In order to realize the rotation of the rotating disc 103, the pipe cutting tool 1 further comprises a cutting hand wheel 106, the cutting hand wheel 106 is provided with a driving gear, the edge of the rotating disc 103 is provided with gear teeth, and the driving gear is meshed with the gear teeth. The rotary disk 103 can be driven to rotate by rotating the cutting hand wheel 106. In addition, a locking handle 108 is further provided on the fixed disc 102, and the locking handle 108 can lock the rotating disc 103 after the rotating disc 103 rotates to a required position.
Each of the top-fixing clamping blocks 105 surrounds the inner hole, is mounted on the fixed disc 102, and each of the top-fixing clamping blocks 105 can slide along the inner hole in the radial direction. As in the present embodiment, the number of the top fixing clamping blocks 105 is four, and the four top fixing clamping blocks 105 are uniformly distributed around the inner hole.
In order to drive each top-fixed clamping block 105 to move, the pipe cutting tool 1 further comprises a driving mechanism, the driving mechanism comprises a clamping bolt 107, a first worm, a worm wheel and a gear disc, the clamping bolt 107 is in threaded connection with the base 101, the first worm is arranged at the end part of the clamping bolt 107, the worm wheel is rotatably mounted on the base 101 and meshed with the first worm, an inner gear is arranged on the inner wall of the gear disc, an outer gear is arranged on the outer wall of the gear disc, the gear disc is rotatably mounted on the base 101, the inner gear is meshed with the worm wheel, a second worm is arranged at the tail end of each top-fixed clamping block 105, and each second worm is meshed with the outer gear respectively. The clamping bolt 107 is screwed to drive the first worm to move, so that the worm wheel rotates, the worm wheel is meshed with the inner gear to drive the gear disc to rotate, and therefore the outer gear simultaneously drives the second worm to move radially along the inner hole, and finally drives the jacking clamping blocks 105 to move radially along the inner hole.
Considering that the sliding distance of the top fixing clamping block 105 is smaller, the outer gear does not need to be fully distributed on the outer wall of the gear disc, and the outer gear comprises a plurality of gear segments which are uniformly distributed, as in the embodiment, the number of the gear segments is four, and each gear segment is matched with a second worm of one top fixing clamping block 105 to realize transmission.
As shown in fig. 3, the TIG welder mainly comprises a welder body 201 and a closed tube Guan Hanqiang 202, wherein the welder body 201 mainly comprises a welding power source, the closed tube Guan Hanqiang is connected with the welder body 201, and the welder body 201 controls the frequency and the magnitude of the output pulse current. The inside of the closed pipe welding gun is provided with a rotatable tungsten electrode 202a, the tungsten electrode 202a is generally connected to a gear ring, and the gear ring is driven by a motor. After the closed tube Guan Hanqiang 202 is caught by the ends of the two pieces of aligned pipe 100 to be welded, the tungsten electrode 202a is driven to rotate so as to weld the ends of the two pieces of aligned pipe 100.
In addition, as shown in fig. 4, the embodiment of the invention also provides a method for high-efficiency butt welding of a small-diameter thin-wall stainless steel tube, which uses the high-efficiency butt welding device for the small-diameter thin-wall stainless steel tube and comprises the following steps:
s1, inserting the end part of a pipe fitting 100 to be processed into an inner hole of the rotating disc 103, adjusting the clamping screw according to the pipe diameter of the pipe fitting 100, and propping up the outer wall of the pipe fitting 100 through each propping up and fixing clamping block 105. Starting the cutter 104, driving the rotary disk 103 to rotate by rotating the cutting hand wheel 106, so that the cutter 104 cuts the end of the pipe fitting 100 around the pipe fitting 100 for a circle, the end of the pipe fitting 100 obtains a flush port, and repeating the process to cut the end of the other pipe fitting 100 also obtains a flush port. The pipe fitting 100 port area and the adjacent 20mm range should be polished and finished, so that welding defects are avoided.
S2, aligning ports of the two pipe fittings 100 to complete pairing, clamping the pipe fittings into the closed pipe Guan Hanqiang 202, selecting corresponding clamping ring clamps according to different pipe diameters, and clamping and fixing the two pipe fittings 100. After the ports of the two pipes 100 are aligned, the gap between the port splice seams should be controlled within the range of 0-1 mm.
And S3, controlling the tungsten electrode 202a of the closed pipe welding gun 202 to rotate around the joint seam of the ports of the two pipe fittings 100, welding the ports of the two pipe fittings 100, and melting the ports of the two pipe fittings 100 to generate a molten pool 300 so as to finish welding forming. When the tungsten electrode 202a of the closed pipe welding gun 202 rotates around the butt joint seam of the two ports of the pipe fitting 100, the butt joint seam is located at the center of the tungsten electrode 202a of the closed pipe welding gun 202, and an arc is generated between the tungsten electrode 202a and the butt joint seam through high-frequency arc striking, so that the arc burns to weld the butt joint seam.
The welder body 201 adjusts the pulse current frequency according to the wall thickness and the pipe diameter of the pipe fitting 100, presets a base value current, namely a pilot arc current, plays a role of keeping stable combustion of an electric arc, and sets a peak current, and the effect is mainly to fully melt a base material to generate a molten pool 300, and the welder has high temperature and energy density and strong penetrating power. In this embodiment, when welding the pipe fitting 100 in the 3mm wall thickness range, the peak welding current is set to be in the range of 65-105A, and the base welding current is set to be in the range of 25-45A.
In addition, during the rotation welding of the closed pipes Guan Hanqiang and 202, inert gas is introduced into the front and back sides of the ports of the two pipes 100, and inert gas is used as the working gas and the shielding gas. In this embodiment, the front shielding gas flow rate should be controlled within the range of 8-15L/min, and the back shielding gas flow rate should be controlled within the range of 5-10L/min.
By adopting the efficient butt welding method for the small-diameter thin-wall stainless steel pipe, the port of the pipe fitting 100 is cut by the pipe cutting tool 1, the port cutting is smooth and clean and has no burrs, the pipe fitting 100 can be effectively ensured to be closely attached to the port without gaps when being assembled, the closed pipe Guan Hanqiang 202 is welded by pulse current with high energy density, the welding defect that unfused welding is difficult to occur in one-time welding forming of the stainless steel pipe is realized, one-time forming of one-time welding is realized, the local heating time of a welding path is short, the heat is concentrated, the heat affected zone is small, and the deformation and the residual stress are also small. Because the groove is not needed, the filler wire is not needed, and a large amount of materials and labor cost can be saved. The equipment is convenient to use, is easy to realize automation, and can effectively improve the labor condition.
In this document, terms such as front, rear, upper, lower, etc. are defined with respect to the positions of the components in the drawings and with respect to each other, for clarity and convenience in expressing the technical solution. It should be understood that they are relative concepts and can be varied in many ways depending upon the application and placement, and that the use of such orientation terms should not be taken to limit the scope of protection of the present application.
The embodiments described above and features of the embodiments herein may be combined with each other without conflict. The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The utility model provides a high-efficient butt welding device of minor diameter thin wall stainless steel pipe which characterized in that includes:
the pipeline cutting tool comprises a base, a rotary disc, a cutting machine and a plurality of jacking clamping blocks, wherein the rotary disc is rotatably arranged on the base, an inner hole is formed in the middle of the rotary disc, the cutting machine is arranged on the rotary disc, each jacking clamping block surrounds the inner hole and is arranged on the base, and each jacking clamping block can radially slide along the inner hole;
and the TIG welding machine comprises a welding machine body and a closed pipe welding gun, wherein a rotatable tungsten electrode is arranged in the closed pipe welding gun, and the closed pipe welding gun can be used for clamping the ends of two sections of aligned pipe fittings to be welded, so that the ends of the two sections of aligned pipe fittings are welded through the tungsten electrode.
2. A small diameter thin wall stainless steel pipe high efficiency butt welding apparatus as claimed in claim 1, wherein: the pipeline cutting tool further comprises a cutting hand wheel, the cutting hand wheel is provided with a driving gear, gear teeth are arranged on the edge of the rotating disc, and the driving gear is meshed with the gear teeth.
3. A small diameter thin wall stainless steel pipe high efficiency butt welding apparatus as claimed in claim 1, wherein: the pipeline cutting tool further comprises a driving mechanism, the driving mechanism comprises a clamping bolt, a first worm, a worm wheel and a gear disc, the clamping bolt is in threaded connection with the base, the first worm is arranged at the end of the clamping bolt, the worm wheel is rotatably mounted on the base and meshed with the first worm, an inner gear is arranged on the inner wall of the gear disc, an outer gear is arranged on the outer wall of the gear disc, the gear disc is rotatably mounted on the base, the inner gear is meshed with the worm wheel, a second worm is arranged at the tail end of each jacking and fixing clamping block, and each second worm is respectively meshed with the outer gear.
4. A small diameter thin wall stainless steel pipe high efficiency butt welding apparatus as claimed in claim 3, wherein: the external gear comprises a plurality of gear segments which are uniformly distributed.
5. The efficient butt welding device for small-diameter thin-wall stainless steel pipes as claimed in claim 1, wherein: the rotary disk is provided with a fixed groove, and the cutting machine is detachably arranged in the fixed groove.
6. A small diameter thin wall stainless steel pipe high efficiency butt welding apparatus as claimed in claim 1, wherein: the base upper portion is equipped with the fixed disk, the top of fixed disk is equipped with the lifting hole.
7. The efficient butt welding device for small-diameter thin-wall stainless steel pipes as claimed in claim 6, wherein: the fixed disk is also provided with a locking handle, and the locking handle is used for locking the rotating disk.
8. A high-efficiency butt welding method for a small-diameter thin-wall stainless steel tube is characterized by comprising the following steps of: an efficient butt welding apparatus using a small diameter thin wall stainless steel tube as claimed in any one of claims 1 to 7, comprising the steps of:
s1, inserting the end part of a pipe fitting into an inner hole of the rotating disc, propping the outer wall of the pipe fitting tightly through each propping clamping block, starting the cutting machine, rotating the rotating disc to enable the cutting machine to cut the end part of the pipe fitting around the pipe fitting for one circle, enabling the end part of the pipe fitting to obtain a flush port, and repeating the process to cut the end part of another pipe fitting to obtain a flush port;
s2, aligning ports of the two pipe fittings and clamping the ports into the closed pipe welding gun;
and S3, controlling the tungsten electrode of the closed pipe welding gun to rotate around the port splicing seam of the two pipe fittings, welding the ports of the two pipe fittings, and melting the ports of the two pipe fittings to generate a molten pool so as to finish welding forming.
9. The efficient butt welding method for the small-diameter thin-wall stainless steel pipes, as claimed in claim 8, is characterized by comprising the following steps: and step S3, inert protective gas is input to the front and back surfaces of the two pipe fitting ports.
10. The efficient butt welding method for the small-diameter thin-wall stainless steel pipes, as claimed in claim 8, is characterized by comprising the following steps: in the step 3, when the tungsten electrode of the sealed tube welding gun rotates around the port splice joint of the two tubes, the splice joint is positioned at the center of the tungsten electrode of the sealed tube welding gun.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311460013.2A CN117340624A (en) | 2023-11-03 | 2023-11-03 | Efficient butt welding device and method for small-diameter thin-wall stainless steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311460013.2A CN117340624A (en) | 2023-11-03 | 2023-11-03 | Efficient butt welding device and method for small-diameter thin-wall stainless steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117340624A true CN117340624A (en) | 2024-01-05 |
Family
ID=89359390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311460013.2A Pending CN117340624A (en) | 2023-11-03 | 2023-11-03 | Efficient butt welding device and method for small-diameter thin-wall stainless steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117340624A (en) |
-
2023
- 2023-11-03 CN CN202311460013.2A patent/CN117340624A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5602458B2 (en) | Method for joining two metal parts by a tungsten-inert gas welding method and apparatus for carrying out the method | |
| KR100504296B1 (en) | Method of welding | |
| US20190184485A1 (en) | Method and system of all-position plasma welding process for titanium alloy pipeline | |
| CA2672669C (en) | Methods for producing even wall down-hole power sections | |
| NO320236B1 (en) | Improved solid welding process | |
| PL175594B1 (en) | Method of bonding metal parts together by arc welding process | |
| CN104384674B (en) | The motor-driven tungsten argon arc welding method of main pump motor rotor shielding sleeve and rotor end bell | |
| CN103008872B (en) | Stirring friction processing remanufacturing method of worn shaft type parts | |
| US5892199A (en) | GTA welding | |
| CN109262117B (en) | High-efficient refrigerated lockhole effect TIG deep penetration welding welder | |
| CN1228167C (en) | Method for red copper transition welding without preheating metal alloy | |
| CN114952050B (en) | Composite welding method suitable for large-diameter thick-wall cylinder body with diameter of more than 8mm | |
| CN101972885A (en) | Bushing-free narrow-gap pulse gas metal arc backing welding method of petroleum kelly bar | |
| CN111014901A (en) | Automatic self-melting TIG welding method for thin-wall stainless steel pipe | |
| JP3773631B2 (en) | TIG welding method for stainless steel pipe | |
| CN117340624A (en) | Efficient butt welding device and method for small-diameter thin-wall stainless steel pipe | |
| CN111715981A (en) | All-position TIG pipe welding equipment and welding process thereof | |
| CN107671398B (en) | SAW automatic welding process method for narrow groove of thick-wall pipe and welding head | |
| US6410876B1 (en) | Method for orbital welding of small-, medium-, and large-diameter pipes | |
| CN114515886A (en) | Large-size special-shaped stainless steel pipeline and efficient additive manufacturing device and method thereof | |
| CN109202224B (en) | K-TIG-based double-sided double-arc welding system and method for wide-caliber pipeline | |
| CN105499761B (en) | Motor stator casing and magnetic pole argon arc welding technique | |
| CN215999198U (en) | Machining welding device | |
| CN115070164B (en) | Submerged arc welding process for longitudinal circular seam of thick plate cone joint | |
| CN216802031U (en) | Groove swing mechanism for pipeline cutting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |