CN114346504A - Welding method of tubular part - Google Patents
Welding method of tubular part Download PDFInfo
- Publication number
- CN114346504A CN114346504A CN202111642965.7A CN202111642965A CN114346504A CN 114346504 A CN114346504 A CN 114346504A CN 202111642965 A CN202111642965 A CN 202111642965A CN 114346504 A CN114346504 A CN 114346504A
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- Prior art keywords
- welding
- tubular
- tubular member
- repair
- defect
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- 238000003466 welding Methods 0.000 title claims abstract description 191
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000008439 repair process Effects 0.000 claims abstract description 64
- 230000007547 defect Effects 0.000 claims abstract description 55
- 239000000945 filler Substances 0.000 claims abstract description 14
- 210000001503 joint Anatomy 0.000 claims abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 27
- 239000001301 oxygen Substances 0.000 claims description 27
- 229910052760 oxygen Inorganic materials 0.000 claims description 27
- 238000009423 ventilation Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000013022 venting Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
- B23K31/027—Making tubes with soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
Abstract
The embodiment of the invention provides a method for welding a tubular piece, wherein the tubular piece is vertically arranged, and the method comprises the following steps: welding the butt joint of two adjacent tubular pieces arranged in the up-down direction from the outside of the tubular pieces; detecting a welding position and determining the position of a welding defect; and (4) performing repair welding operation on the welding defect position from the inside of the tubular member. According to the welding method of the tubular piece, disclosed by the embodiment of the invention, the operation efficiency is improved by performing welding operation from the outside of the tubular piece, the repair welding operation is performed from the inside of the tubular piece, the repair welding can be performed on the welding defect position on the inner wall of the tubular piece in a targeted manner, the complicated steps of removing the filler from the outer wall of the tubular piece and then performing repair welding filling in the related technology are avoided, the operation time is saved, and the operation efficiency is improved; meanwhile, the repair welding effect on the inner wall can be directly observed conveniently in the repair welding process, and the success rate of repair welding operation is improved.
Description
Technical Field
The invention relates to the technical field of engineering, in particular to a method for welding a tubular part.
Background
A large number of vertically disposed tubular members are required to be installed by welding in cryogenic rectification systems. The requirement on the quality of the welding seam is high, and the defects generated at the welding seam are required to be remedied so as to meet the use requirement.
In the related art, the repair welding is performed by removing the filler at the welding defect from the outer wall of the tubular member and then performing the repair welding again. The method has the advantages of large workload, low efficiency, incapability of directly observing the repair welding effect on the inner wall and higher risk of repair welding failure.
Disclosure of Invention
In view of the above, it is desirable to provide a welding method for tubular members, which improves the success rate of repair welding.
In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:
the embodiment of the invention provides a welding method of a tubular piece, wherein the tubular piece is vertically arranged, and the welding method comprises the following steps:
welding the butt joint of two adjacent tubular pieces arranged in the up-down direction from the outside of the tubular pieces;
detecting the welding position and determining the position of the welding defect;
and performing repair welding operation on the welding defect position from the inside of the tubular member.
In some embodiments, said performing a repair welding operation on a weld defect location from inside said tubular comprises:
hanging a welding execution main body into the interior of the tubular piece from a pipe orifice at the top of the tubular piece, and reaching the position of the welding defect;
and performing repair welding operation on the welding defect position.
In some embodiments, the hanging the welding performing body from the nozzle at the top of the tubular member into the interior of the tubular member to the welding defect position includes:
providing a basket for carrying a welding performing body;
suspending the basket carrying the weld performing body to the nozzle at the top of the tubular;
and lowering the hanging basket until the hanging basket reaches the position of the welding defect.
In some embodiments, before said suspending said basket carrying the welding-performing body to the nozzle at the top of said tubular, said welding method comprises:
and determining that the oxygen content of the air in the tubular element is within a preset qualified range.
In some embodiments, the preset qualified range is set to: the volume fraction of the oxygen ranges from 19.5 percent to 23.5 percent.
In some embodiments, the determining that the oxygen content of the air inside the tubular member is within a predetermined acceptable range includes:
and when the detected oxygen content of the air is not within the preset qualified range, ventilating the interior of the tubular element until the oxygen content of the air is within the preset qualified range.
In some embodiments, said venting the interior of said tubular comprises:
and conveying outside air to the welding defect position, and keeping the preset ventilation time.
In some embodiments, the repair welding operation comprises:
removing the welding filler at the position of the welding defect;
and performing repair welding on the welding defect position.
In some embodiments, after the repair welding of the welding defect position, the repair welding operation includes:
polishing the welding filler at the repair welding position;
and wiping and cleaning the repair welding position.
According to the welding method of the tubular piece, disclosed by the embodiment of the invention, the operation efficiency is improved by performing welding operation from the outside of the tubular piece, the repair welding operation is performed from the inside of the tubular piece, the repair welding can be performed on the welding defect position on the inner wall of the tubular piece in a targeted manner, the complicated steps of removing the filler from the outer wall of the tubular piece and then performing repair welding filling in the related technology are avoided, the operation time is saved, and the operation efficiency is improved; meanwhile, the repair welding effect on the inner wall can be directly observed conveniently in the repair welding process, and the success rate of repair welding operation is improved.
Drawings
FIG. 1 is a schematic illustration of the steps of a method of welding tubular members in accordance with one embodiment of the present invention;
FIG. 2 is a schematic view illustrating a hanging basket being hung to a welding defect position according to an embodiment of the present invention;
FIG. 3 is a schematic view of a basket according to an embodiment of the present invention.
Description of the reference numerals
A tubular member 10; a nozzle 10 a; a weld defect location 11; a basket 20; a workspace 20 a; an opening 20 b; a vertical rod 21; a base plate 22; a first reinforcement ring 23; a second reinforcement ring 24; a containment baffle 25; wire rope 30
Detailed Description
It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.
In the description of the present application, the "up," "down," "top," "bottom," "up-down" orientations or positional relationships are based on the orientations or positional relationships illustrated in fig. 2, it being understood that these orientation terms are merely for convenience in describing the present application and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting of the present application.
The embodiment of the present invention provides a welding method for tubular members 10, referring to fig. 1 and 2, the tubular members 10 are vertically arranged, two adjacent tubular members 10 are welded at a butt joint position along an axial direction, and the welding method includes:
s1: the welding work is performed from the outside of the tubular member 10 to the butt joint of two adjacent tubular members 10 arranged in the up-down direction.
The welding operation is carried out from the outside, the advantage that the outside activity space is large can be utilized, more constructors and equipment are arranged to operate the butt joint positions, the operation efficiency is improved, and the operation time is shortened.
S2: and detecting the welding position and determining the welding defect position 11.
The specific method of detecting weld defects is not limited. For example, a constructor visually observes and judges whether a welding defect exists on the surface of a welding position; for another example, an X-ray inspection apparatus or an internal image of a welding position is used, and a constructor or a machine determines whether a welding defect exists.
S3: the repair welding operation is performed on the welding defect position 11 from the inside of the tubular member 10.
The weld defect location 11 is located at the root of the weld, i.e. on the inner wall of the tubular member 10. The repair welding operation from the inside of the tubular member 10 can directly perform the operation on the welding defect position 11 on the inner wall of the tubular member 10.
The welding method of the tubular member 10 in the embodiment of the invention improves the working efficiency by performing welding operation from the outside of the tubular member 10, can perform repair welding operation from the inside of the tubular member 10 in a targeted manner at the welding defect position 11 on the inner wall of the tubular member 10, avoids the complicated steps of removing the filler from the outer wall of the tubular member 10 and then performing repair welding filling in the related art, saves the working time and improves the working efficiency; meanwhile, the repair welding effect on the inner wall can be directly observed conveniently in the repair welding process, and the success rate of repair welding operation is improved.
It will be appreciated that the welding performing body for performing the repair welding operation must enter the interior of tubular member 10.
The specific type of the welding execution subject is not limited, for example, constructors and related welding equipment; such as welding robots, etc.
It will be appreciated that the particular manner in which the welding performing body enters the interior of tubular member 10 is not limited.
For example, in the embodiment where the welding execution body is a welding robot, the repairing welding operation of the welding defect position 11 from the inside of the tubular member 10 includes:
a multi-foot walking structure is arranged on the welding robot, and a vacuum chuck is arranged on the walking foot of the multi-foot walking structure, so that the welding robot can climb on the inner wall of the tubular member 10 and walk to the welding defect position 11 to perform repair welding operation.
As another example, the repair welding operation performed on the welding defect location 11 from the inside of the tubular member 10 includes:
hanging a welding execution body into the inside of the tubular member 10 from a nozzle 10a at the top of the tubular member 10 and reaching a welding defect position 11;
a repair welding work is performed on the welding defect position 11.
The welding execution main body can be suitable for various different forms by adopting a hanging mode. Meanwhile, the crane, the steel cable 30, the electric hoist and other equipment used in the hoisting and installing process of the tubular element 10 can be fully utilized, so that the use cost is reduced, the preparation time of repair welding operation is shortened, and the efficiency of repair welding operation is improved.
It can be understood that an auxiliary device is provided to improve the repair welding efficiency and safety of the welding execution subject to the constructor.
In some embodiments, referring to fig. 2, the hanging of the welding performing body from the nozzle 10a at the top of the tubular member 10 into the interior of the tubular member 10 and to the welding defect location 11 includes:
a basket 20 for carrying a welding performing body is provided. The hanging basket 20 provides a stable construction platform for the constructors to perform repair welding operation and related welding equipment, is beneficial to the constructors to perform operation for a long time, and improves the operation efficiency.
The basket 20 carrying the welding performing body is suspended to the nozzle 10a at the top of the tubular member 10. After the wire rope 30 is connected to the basket 20, the wire rope 30 is pulled by a hoisting device such as a crane to move the basket 20 to the position of the nozzle 10 a.
The basket 20 is lowered until the basket 20 reaches the weld defect location 11.
It will be appreciated that the basket 20 is spaced from the inner wall of the tubular member 10 by a safe working distance. So as to reduce the probability of collision between the basket 20 and the inner wall of the tubular member 10 due to the shaking of the steel cable 30, on one hand, reduce the probability of damage to the tubular member 10, and on the other hand, ensure the safety of the constructors and the related welding equipment.
In some embodiments, referring to fig. 3, a working space 20a is provided in the basket 20, the working space 20a is provided with an opening 20b through the top of the basket 20, and the opening 20b is communicated with the working space 20 a. The constructors and related equipment enter the working space 20a through the opening 20 b.
In some embodiments, referring to fig. 3, the basket 20 includes a plurality of vertical rods 21, a bottom plate 22 and a first reinforcing ring 23, the vertical rods 21 extend in a vertical direction, one end of each vertical rod 21 is connected to an edge of the top surface of the bottom plate 22, the first reinforcing ring 23 is disposed at the other end of each vertical rod 21 and connected to each vertical rod 21, the vertical rods 21, the bottom plate 22 and the first reinforcing ring 23 together enclose a working space 20a, and one side of the first reinforcing ring 23 away from the bottom plate 22 encloses an opening 20 b. The cradle 20 has a simple structure, few manufacturing steps, and low production cost, and facilitates the access of the constructors to the inside of the tubular member 10.
The bottom plate 22 provides a stable platform for constructors 'operation and putting of relevant equipment, provides the safety guarantee for constructors' operation through pole setting 21 and first beaded finish 23, and first beaded finish 23 has reduced pole setting 21 and has leaned on at personnel, the probability that the condition such as equipment collision takes place to warp.
The upright rod 21 can be made of standard pipes, so that the manufacturing cost is reduced, and the structural weight is reduced while the structural strength is ensured.
The base plate 22 may be made of standard sheet material to reduce manufacturing costs.
The first reinforcing ring 23 can be formed by bending a sheet metal part into a ring and then connecting the sheet metal part end to end, or formed by bending a reinforcing steel bar and then connecting the sheet metal part end to end.
It will be appreciated that the manner of connection between the first reinforcement ring 23 and the upright 21, and between the upright 21 and the base plate 22 is not limited. Welding, screwing and the like can be adopted.
It may be connected that an auxiliary reinforcing structure is provided on the basket 20 to further improve the structural strength of the basket 20.
In some embodiments, with reference to fig. 3, the basket 20 comprises a second reinforcement ring 24, the second reinforcement ring 24 being arranged between the bottom plate 22 and the first reinforcement ring 23, the second reinforcement ring 24 circumferentially connecting the uprights 21. The probability of deformation of the upright rods 21 under the conditions of leaning of personnel, equipment collision and the like is further reduced through the second reinforcing ring 24, and the overall structural strength of the hanging basket 20 is improved.
It will be appreciated that additional stop formations are provided on the basket 20 to reduce the chance of equipment within the basket 20 falling out of the basket 20.
In some embodiments, referring to fig. 3, the basket 20 comprises a containment plate 25, the containment plate 25 being disposed on the top surface of the bottom plate 22 and extending in a vertical direction, the containment plate 25 being connected between at least some of the adjacent two of the rods 21. The chances of falling objects are reduced by the enclosure 25 to restrict the range of motion of the associated equipment placed on the base plate 22.
It will be appreciated that the baskets 20 are made of the same material as the tubular member 10, preventing contamination of the tubular member 10.
It will be appreciated that the basket 20 is cleaned after manufacture to reduce the chance of impurities adhering to the basket 20 disrupting the cleanliness of the interior of the tubular member 10.
It can be understood that after the basket 20 is manufactured, strength, stability, lifting, load carrying and dynamic load testing are performed to verify the reliability and safety of the basket 20.
It can be understood that the hanging basket 20 is hung by connecting a plurality of steel cables 30 with the hanging basket 20, and the connection can be carried out by adopting a double-lock-buckle locking mode, so that rope slipping is prevented, and the probability of safety accidents is reduced. The plurality of steel cables 30 are symmetrically arranged, so that the stress is uniform in the process of hanging the hanging basket 20, and the safety is improved.
It will be appreciated that in the case of a relatively long tubular member 10, the air flow within tubular member 10 is poor and there is a risk of discomfort to the operator entering the interior of tubular member 10. Accordingly, the operator should take measures to improve safety before entering the interior of the tubular member 10.
In some embodiments, before said suspension of the basket 20 carrying the welding execution body to the nozzle 10a at the top of the tubular element 10, the welding method comprises:
it is determined that the oxygen content of the air inside the tubular member 10 is within a predetermined acceptable range. The oxygen content of the air inside the tubular element 10 is determined by an oxygen content tester, and after the oxygen content of the air inside the tubular element 10 meets the requirement within the preset qualified range, the constructor can be allowed to enter the interior of the tubular element 10 along with the hanging basket 20.
In some embodiments, the preset qualified range is set to: the volume fraction of the oxygen ranges from 19.5 percent to 23.5 percent. Within the range, the normal breathing requirement of constructors is met, and the possibility that the sparks splashed during repair welding work ignite the objects in the hanging basket 20 due to high oxygen content can be reduced.
It will be appreciated that if the detected oxygen content of the air is not within the predetermined acceptable range, measures are taken to adjust the oxygen content of the air in the tubular member 10.
In some embodiments, determining that the oxygen content of the air inside the tubular element 10 is within a predetermined acceptable range comprises:
when the detected oxygen content of the air is not within the preset acceptable range, the inside of the pipe-shaped member 10 is ventilated until the oxygen content of the air is within the preset acceptable range. The replacement of the gas inside the tubular element 10 is achieved by ventilation so that the air is oxygen-rich.
The particular manner of venting employed is not limited.
In some embodiments, said ventilating the interior of the tubular element 10 comprises:
the external air is supplied from the nozzle 10a to the inside of the tubular member 10 while maintaining a preset ventilation time.
An aeration fan may be detachably installed at the nozzle 10a of the tubular member 10, and the aeration fan is continuously operated during the hanging of the gondola 20 and the repair welding work, so that the oxygen content of the air inside the tubular member 10 is satisfactory.
In some embodiments, said ventilating the interior of the tubular element 10 comprises:
outside air is supplied to the welding defect position 11 and a preset ventilation time is maintained.
An air compressor can be adopted to connect the hose, and the air outlet of the hose faces the welding defect position 11 to adjust the oxygen content of the air at the welding defect position 11.
The specific duration of the ventilation time is determined by the internal volume of the tubular member 10 and the difference between the oxygen content of the air and the predetermined acceptable range.
It should be noted that, due to the large internal space of the tubular member 10, it may happen that the air oxygen content in the local area is not satisfactory. Therefore, during the process of hanging the basket 20 and performing repair welding operation, whether to continue the operation needs to be judged in real time according to the feedback condition of the field constructor and the detection condition of the instrument.
For example, in the process of lowering the hanging basket 20, after the hanging basket 20 is lowered to a preset safe distance from the pipe orifice 10a, pausing for a preset observation time, if the constructor is not abnormal or the test value of the oxygen content detector in the hanging basket 20 is not abnormal, continuing to lower the preset safe distance and pausing for the preset observation time again, and so on until the hanging basket 20 is lowered to the welding defect position 11, pausing for the preset observation time again, and if the hanging basket is not abnormal, performing repair welding operation. During this time, if an anomaly occurs, the baskets 20 are lifted off the inside of the tubular element 10 and the ventilation is resumed inside the tubular element 10.
The preset safety distance is 2m-6m (meter), for example, 2m, 4m, 6m, etc.
The preset observation time is 2min to 4min (minute), for example, 2min, 3min, 4min, and the like.
In some embodiments, the repair welding operation comprises:
and melting the welding filler at the welding defect position 11, and refilling the welding defect position 11 with the molten welding filler so as to save welding materials.
In some embodiments, the repair welding operation comprises:
and removing the welding filler at the welding defect position 11. So as to prevent the influence of the original welding filler on the subsequent repair welding operation and the connection strength of the position due to the welding defect.
And (5) performing repair welding on the welding defect position 11.
In some embodiments, after said repair welding of the welding defect location 11, the repair welding operation comprises:
and polishing the welding filler at the repair welding position. So as to reduce the possibility that the welding filler at the position of repair welding generates bulges to influence the turbulence and noise generated by the fluid delivery after the subsequent tubular member 10 is put into operation.
The repair welding position can be polished by a handheld grinding wheel polisher.
And wiping and cleaning the repair welding position. To reduce impurities generated by grinding adhering to the inner wall of the tubular member 10 and maintain the cleanliness of the interior of the tubular member 10.
The various embodiments/implementations provided herein may be combined with each other without contradiction.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. A method of welding tubular members, said tubular members being arranged vertically, said method comprising:
welding the butt joint of two adjacent tubular pieces arranged in the up-down direction from the outside of the tubular pieces;
detecting the welding position and determining the position of the welding defect;
and performing repair welding operation on the welding defect position from the inside of the tubular member.
2. The welding method of claim 1, wherein said repairing the weld defect from the interior of said tubular member comprises:
hanging a welding execution main body into the interior of the tubular piece from a pipe orifice at the top of the tubular piece, and reaching the position of the welding defect;
and performing repair welding operation on the welding defect position.
3. The welding method of claim 2, wherein said hanging a welding performing body from a nozzle at the top of said tubular member into the interior of said tubular member to said weld defect location comprises:
providing a basket for carrying a welding performing body;
suspending the basket carrying the weld performing body to the nozzle at the top of the tubular;
and lowering the hanging basket until the hanging basket reaches the position of the welding defect.
4. A welding method according to claim 3, wherein before said suspending said basket carrying the welding performing body to the nozzle at the top of said tubular member, said welding method comprises:
and determining that the oxygen content of the air in the tubular element is within a preset qualified range.
5. The welding method according to claim 4, wherein the preset acceptable range is set to: the volume fraction of the oxygen ranges from 19.5 percent to 23.5 percent.
6. The welding method of claim 4, wherein said determining that the oxygen content of the air inside said tubular member is within a predetermined acceptable range comprises:
and when the detected oxygen content of the air is not within the preset qualified range, ventilating the interior of the tubular element until the oxygen content of the air is within the preset qualified range.
7. The welding method of claim 6, wherein said venting the interior of said tubular member comprises:
and conveying outside air to the welding defect position, and keeping the preset ventilation time.
8. The welding method of claim 1, wherein the repair welding operation comprises:
removing the welding filler at the position of the welding defect;
and performing repair welding on the welding defect position.
9. The welding method according to claim 8, wherein after the repair welding of the welding defect position, the repair welding work includes:
polishing the welding filler at the repair welding position;
and wiping and cleaning the repair welding position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111642965.7A CN114346504A (en) | 2021-12-29 | 2021-12-29 | Welding method of tubular part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111642965.7A CN114346504A (en) | 2021-12-29 | 2021-12-29 | Welding method of tubular part |
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| CN114346504A true CN114346504A (en) | 2022-04-15 |
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| CN202111642965.7A Pending CN114346504A (en) | 2021-12-29 | 2021-12-29 | Welding method of tubular part |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041557A (en) * | 1989-11-20 | 1990-04-25 | 韩孝儒 | Metal pipe inner seam welding eyeglass viewer and revolution tip |
| JP2001347392A (en) * | 2000-06-08 | 2001-12-18 | Toshiba Corp | Method of repairing defect and device for repairing defect |
| CN101982287A (en) * | 2010-10-09 | 2011-03-02 | 中广核工程有限公司 | Automatic welding method of nuclear island main pipes |
| CN104722938A (en) * | 2015-02-27 | 2015-06-24 | 东方电气集团东方锅炉股份有限公司 | Barrel defect welding repair method |
| CN105951897A (en) * | 2016-06-23 | 2016-09-21 | 浙江大学 | In-hole imaging device used for detecting integrity of prefabricated tubular pile and detecting method |
| CN111822897A (en) * | 2020-07-23 | 2020-10-27 | 郭宏健 | Tubular pile underground welding appearance |
| CN113770491A (en) * | 2021-10-11 | 2021-12-10 | 哈尔滨焊接研究院有限公司 | Repair welding method for TIG (tungsten inert gas) inner welding of all-position butt joint of pipelines |
-
2021
- 2021-12-29 CN CN202111642965.7A patent/CN114346504A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041557A (en) * | 1989-11-20 | 1990-04-25 | 韩孝儒 | Metal pipe inner seam welding eyeglass viewer and revolution tip |
| JP2001347392A (en) * | 2000-06-08 | 2001-12-18 | Toshiba Corp | Method of repairing defect and device for repairing defect |
| CN101982287A (en) * | 2010-10-09 | 2011-03-02 | 中广核工程有限公司 | Automatic welding method of nuclear island main pipes |
| CN104722938A (en) * | 2015-02-27 | 2015-06-24 | 东方电气集团东方锅炉股份有限公司 | Barrel defect welding repair method |
| CN105951897A (en) * | 2016-06-23 | 2016-09-21 | 浙江大学 | In-hole imaging device used for detecting integrity of prefabricated tubular pile and detecting method |
| CN111822897A (en) * | 2020-07-23 | 2020-10-27 | 郭宏健 | Tubular pile underground welding appearance |
| CN113770491A (en) * | 2021-10-11 | 2021-12-10 | 哈尔滨焊接研究院有限公司 | Repair welding method for TIG (tungsten inert gas) inner welding of all-position butt joint of pipelines |
Non-Patent Citations (1)
| Title |
|---|
| 全国安全生产教育培训教材编审委员会: "《熔化焊接与热切割作业（2016修订版）》", 30 April 2016, 中国矿业大学出版社 * |
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Application publication date: 20220415 |
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