CN207990010U - A kind of pre- repaired mouth steel pipe of weld bond - Google Patents
A kind of pre- repaired mouth steel pipe of weld bond Download PDFInfo
- Publication number
- CN207990010U CN207990010U CN201721369152.4U CN201721369152U CN207990010U CN 207990010 U CN207990010 U CN 207990010U CN 201721369152 U CN201721369152 U CN 201721369152U CN 207990010 U CN207990010 U CN 207990010U
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- weld bond
- short tube
- stainless steel
- repaired mouth
- 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.)
- Expired - Fee Related
Links
Landscapes
- Arc Welding In General (AREA)
Abstract
The utility model discloses a kind of pre- repaired mouth steel pipes of weld bond, including：Steel pipe；Stainless steel short tube, is arranged in steel pipe, and the distance of first end to the weld bond end of steel pipe of stainless steel short tube is more than second end to the distance of weld bond end；First overlay cladding, is attached at steel pipe inner wall, is connect with first end；From first end, First terminal point is extended to along the direction far from short tube；Second overlay cladding is attached at the steel pipe inner wall, is connect with the second end；From the second end, the weld bond end is extended to；Wherein, the stainless steel short tube inner surface is smoothly overlapped with first overlay surface；The stainless steel short tube inner surface is smoothly overlapped with second overlay surface.The pre- repaired mouth steel pipe of weld bond provided by the present application is for solving that the high technical problem of internal corrosion prevention joint coating of steel tube task difficulty exists in the prior art, realizing reduces repaired mouth process and difficulty, extend pipeline life cycle, reduces the technique effect of safety and environmental protection risk caused by corrosive pipeline leakage.
Description
Technical field
The utility model is related to pipe technology field more particularly to a kind of pre- repaired mouth steel pipes of weld bond.
Background technology
Steel pipe weld bond is the most weak link of corrosion resistance, in all corrosive pipeline leakage accidents, pipeline weldering
Mouth corrosion accounts for 60% or more, is on active service the period to extend pipeline, in internal coat pipeline construction, needs to the progress of pipe welding port inner wall
Preservative treatment, this process are known as " pipeline internal joint patch "；
What pipeline internal joint patch was realized generally by repaired mouth robot, it needs first to clear up pipe welding port inner wall
Operation, then spraying liquid anticorrosive paint, keeps pipeline internal corrosion layer continuous；Since unsuitable robot enters small bore pipe
Inside road, spraying internal joint patch cannot achieve；
For small-bore pipeline, the general method using live coating squeezing and coating carries out internal joint patch operation, due to can not be to small
Aperture pipe welding port inner wall carries out prune job, and coating adhesion is insufficient, can not ensure the quality of internal joint patch erosion resistant coating；
That is, the high technical problem of internal corrosion prevention joint coating of steel tube task difficulty exists in the prior art.
Utility model content
The utility model solves anti-corrosion in steel pipe existing in the prior art by providing a kind of pre- repaired mouth steel pipe of weld bond
The high technical problem of repaired mouth task difficulty.
In order to solve the above technical problems, the utility model provides following technical solution：
A kind of pre- repaired mouth steel pipe of weld bond, including：
Steel pipe；
Stainless steel short tube is arranged in the steel pipe, and the first end and second end of the stainless steel short tube is respectively positioned on described
In steel pipe；Wherein, the distance of the first end to the weld bond end of the steel pipe is more than the second end to the weld bond end
Distance；
First overlay cladding is attached at the steel pipe inner wall, is connect with the first end；From the first end, along separate
The direction of the short tube extends to First terminal point；
Second overlay cladding is attached at the steel pipe inner wall, is connect with the second end；From the second end, extend to
The weld bond end；
Wherein, the stainless steel short tube inner surface is smoothly overlapped with first overlay surface；The stainless steel short tube
Inner surface is smoothly overlapped with second overlay surface.
Optionally, the stainless steel short tube and the steel pipe are interference fit.
Optionally, the thickness of first overlay cladding successively decreases along the direction of the first end to the First terminal point.
Optionally, the thickness of second overlay cladding is identical as the thickness of stainless steel short tube.
Optionally, the weld bond end is groove shape.
Optionally, the outer diameter of the stainless steel short tube is bigger 0.05mm~0.08mm than the internal diameter of the steel pipe, to realize
It is full of assembly.
Optionally, the welding bead overlapping rate of first overlay cladding is 3mm.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages：
1, pre- repaired mouth steel pipe provided by the embodiments of the present application inside sets the first overlay cladding, stainless steel short tube in steel pipe weld bond side
With the second overlay cladding, anti-corrosion function can be provided, therefore does not need and carries out interior corrosion-resistanting interpolating port process at butt welding mouth again, reduces repaired mouth work
Sequence and difficulty.
2, pre- repaired mouth steel pipe provided by the embodiments of the present application, increases by using stainless steel short tube and steel pipe metallurgical binding
The thickness of pipe end improves the mechanical property of pipe end.
3, pre- repaired mouth steel pipe provided by the embodiments of the present application can be prevented using the structure of overlay cladding plus stainless steel short-tube filling
Chromium carbide pin hole only is formed in pre- repaired mouth layer surface, prevents caused by pure built-up welding corrosion resistant alloy component diluent due to reduce pre- benefit
The corrosion resistance of mouth layer, further increases the corrosion resistance of pipe end, extends pipeline life cycle, reduces corrosive pipeline leakage
Caused safety and environmental protection risk.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only the embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to the attached drawing of offer
Obtain other attached drawings.
Fig. 1 is the structure chart of pre- repaired mouth steel pipe in the embodiment of the present application；
Fig. 2 is the machining sketch chart of pre- repaired mouth steel pipe in the embodiment of the present application.
Specific implementation mode
The embodiment of the present application solves and anti-corrosion in steel pipe exists in the prior art by providing a kind of pre- repaired mouth steel pipe of weld bond
The high technical problem of repaired mouth task difficulty, realizing reduces repaired mouth process and difficulty, extends pipeline life cycle, reduces pipeline
The technique effect of safety and environmental protection risk caused by corrosion leakage.
In order to solve the above technical problems, the general thought that the embodiment of the present application provides technical solution is as follows：
The application provides a kind of pre- repaired mouth steel pipe of weld bond, including：
Steel pipe；
Stainless steel short tube is arranged in the steel pipe, and the first end and second end of the stainless steel short tube is respectively positioned on described
In steel pipe；Wherein, the distance of the first end to the weld bond end of the steel pipe is more than the second end to the weld bond end
Distance；
First overlay cladding is attached at the steel pipe inner wall, is connect with the first end；From the first end, along separate
The direction of the short tube extends to First terminal point；
Second overlay cladding is attached at the steel pipe inner wall, is connect with the second end；From the second end, extend to
The weld bond end；
Wherein, the stainless steel short tube inner surface is smoothly overlapped with first overlay surface；The stainless steel short tube
Inner surface is smoothly overlapped with second overlay surface.
Pre- repaired mouth steel pipe provided by the embodiments of the present application, in steel pipe weld bond side, inside set the first overlay cladding, stainless steel short tube and
Second overlay cladding can provide anti-corrosion function, therefore do not need and carry out interior corrosion-resistanting interpolating port process at butt welding mouth again, reduce repaired mouth process
And difficulty.
In order to better understand the above technical scheme, being carried out to above-mentioned technical proposal below in conjunction with specific embodiment
It is described in detail, it should be understood that the specific features in the utility model embodiment and embodiment are to the detailed of technical scheme
Thin explanation, rather than to the restriction of technical scheme, in the absence of conflict, the embodiment of the present application and embodiment
In technical characteristic can be combined with each other.
In the present embodiment, as shown in Figure 1, providing a kind of pre- repaired mouth steel pipe of weld bond, including：
Steel pipe 1；
Stainless steel short tube 2 is arranged in the steel pipe 1, and the first end 201 and second end 202 of the stainless steel short tube 2 are equal
In the steel pipe 1；Wherein, the distance of the first end 201 to the weld bond end 101 of the steel pipe 1 is more than described second
The distance of end 202 to the weld bond end 101；
First overlay cladding 3, is attached at the steel pipe inner wall, is connect with the first end 201；From the first end 201,
First terminal point 301 is extended to along the direction far from the short tube；
Second overlay cladding 4, is attached at the steel pipe inner wall, is connect with the second end 202；From the second end 202,
Extend to the weld bond end 101；
Wherein, 2 inner surface of stainless steel short tube is overlapped with 3 smooth surface of the first overlay cladding；The stainless steel is short
2 inner surface of pipe is overlapped with 4 smooth surface of the second overlay cladding.
In the following, the structure that the application provides steel pipe is discussed in detail in conjunction with Fig. 1 and Fig. 2.
In specific implementation process, the steel pipe 1 can be mild steel parent metal steel pipe or medium carbon content steel pipe, herein not
It is restricted.
In the embodiment of the present application, in order to ensure the abundant fixation of stainless steel short tube 2 and steel pipe 1, can be arranged it is described not
Rust steel short tube 2 is interference fit with the steel pipe 1.
Further, it is possible to the outer diameter that the stainless steel short tube 2 is set it is bigger 0.05mm than the internal diameter of the steel pipe 1~
0.08mm, to realize elastic conjunction.
In specific implementation process, in order to ensure the filling of stainless steel short tube 2, can first it be machined in 1 pipe end of steel pipe
Wall ensures inner wall of the pipe within certain depth dimensions and the margin of tolerance, and ensures that metal sheet is exposed in machined surface cleaning
Color；1 pipe end of sensing heating steel pipe again makes its expansion, is processed next, prefabricated stainless steel short tube 2 is packed into pipe end
Endoporus in, it is cooling after stainless steel short tube 2 combine closely with steel pipe 1, realize and be interference fitted.
Specifically, in pipe end pre- repaired mouth layer using stainless steel short tube 2 and with 1 metallurgical binding of steel pipe, on the one hand, increase
The thickness of pipe end improves the mechanical property of pipe end；On the other hand, 2 coefficient of expansion of stainless steel short tube is more than steel pipe 1,
Play the role of to 1 pipe end of steel pipe it is expanding, play control 1 bottlenecking of steel pipe.
In the embodiment of the present application, the first overlay cladding 3 and the second overlay cladding 4 are to assemble 2 post-processing of stainless steel short tube
It is formed, stainless steel welding stick specifically may be used, fill silk built-up welding, forms the first overlay cladding 3 and the second built-up welding of stainless steel
Layer 4.
Specifically, can be the interface for first going deep into stainless steel short tube and steel pipe inner wall in steel pipe with welding gun, i.e., from first
Point 201, steel pipe rotates under numerical control, and simultaneously axial wobble is moved away from displacement, welding bead is taken tungsten needle starting the arc wire feed along 5 built-up welding of first direction
Rate 3mm is met, until heap is soldered to design width, i.e. heap is welded to the First terminal point 301；Wherein, the design width is welded by pipeline
It connects heat affected area not damaging premised on pipe end inner anticorrosioning coating, Pipeline butt is avoided to connect heat input butt welding mouth inner wall area anti-corrosion
The destruction of coating, to realize the continuous of pipeline internal corrosion layer.
Then, from the First terminal point 301, along the second direction 6 close to the weld bond end 101, welding gun is moved away from shifting
Position, argon gas electric arc axial wobble fusing overlay cladding (solid solution) again, until 201 position of first end of stainless steel short tube 2, described in formation
First overlay cladding 3 continuously moves to second end next, welding gun, which stops axial wobble, is changed to spiral displacement and high current
202, stainless steel is formed with melting stainless steel short tube 2 and is dissolved overlay cladding so that the inner surface of stainless steel short tube 2 and first heap
Layer 3 connects transition.
In the embodiment of the present application, the thickness of first overlay cladding 3 is along the first end to the side of the First terminal point
To successively decreasing, to realize the smooth excessiveness of stainless steel short tube 2, the first overlay cladding, 1 inner wall of steel pipe, convenient for subsequently to 1 inner wall of steel pipe into
Row preservative treatment.
In the embodiment of the present application, the formation process of second overlay cladding 4 can use melting pole gun instead from stainless
The second end 202 of steel short tube 2 starts, and built-up welding is up to the weld bond end 101 of steel pipe 1.
After forming the second overlay cladding 4, can by the techniques such as polish, make the thickness of second overlay cladding 4 with it is described
The thickness of stainless steel short tube 2 is identical, and then ensures in the stainless steel short tube 2 just face and 4 smooth surface of the second overlay cladding
Transition, convenient for the Forming Quality of weld bond in welding and guarantee.
Further, it is possible to which the weld bond end 101 of polishing is groove shape, further it is convenient for the company of steel pipe 1 and other steel pipes
It connects.
Specifically, the filled solid dissolving method of built-up welding is used in the application pipe end, on the one hand, prevent in pre- repaired mouth layer surface
The corrosion resistance of pre- repaired mouth layer is reduced due to form chromium carbide pin hole, prevent caused by pure built-up welding corrosion resistant alloy component diluent
Energy；On the other hand, keep the visual interface of pre- repaired mouth layer and mild steel base material smoothed by the reversed solid solution craft method of positive built-up welding
It crosses, ensures the bond quality with inner anticorrosioning coating, can effectively extend pipeline life cycle, caused by reducing corrosive pipeline leakage
Safety and environmental protection risk.
Technical solution in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage：
1, pre- repaired mouth steel pipe provided by the embodiments of the present application inside sets the first overlay cladding, stainless steel short tube in steel pipe weld bond side
With the second overlay cladding, anti-corrosion function can be provided, therefore does not need and carries out interior corrosion-resistanting interpolating port process at butt welding mouth again, reduces repaired mouth work
Sequence and difficulty.
2, pre- repaired mouth steel pipe provided by the embodiments of the present application, increases by using stainless steel short tube and steel pipe metallurgical binding
The thickness of pipe end improves the mechanical property of pipe end.
3, pre- repaired mouth steel pipe provided by the embodiments of the present application can be prevented using the structure of overlay cladding plus stainless steel short-tube filling
Chromium carbide pin hole only is formed in pre- repaired mouth layer surface, prevents caused by pure built-up welding corrosion resistant alloy component diluent due to reduce pre- benefit
The corrosion resistance of mouth layer, further increases the corrosion resistance of pipe end, extends pipeline life cycle, reduces corrosive pipeline leakage
Caused safety and environmental protection risk.
Although the preferred embodiment of the utility model has been described, once a person skilled in the art knows basic
Creative concept, then additional changes and modifications may be made to these embodiments.It is wrapped so the following claims are intended to be interpreted as
It includes preferred embodiment and falls into all change and modification of the scope of the utility model.
Obviously, those skilled in the art can carry out the utility model various modification and variations without departing from this practicality
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (8)
1. a kind of pre- repaired mouth steel pipe of weld bond, which is characterized in that including：
Steel pipe；
Stainless steel short tube is arranged in the steel pipe, and the first end and second end of the stainless steel short tube is respectively positioned on the steel pipe
It is interior；Wherein, the first end to the weld bond end of the steel pipe distance be more than the second end to the weld bond end away from
From；
First overlay cladding is attached at the steel pipe inner wall, is connect with the first end；From the first end, along far from described
The direction of short tube extends to First terminal point；
Second overlay cladding is attached at the steel pipe inner wall, is connect with the second end；From the second end, extend to described
Weld bond end；
Wherein, the stainless steel short tube inner surface is smoothly overlapped with first overlay surface；Table in the stainless steel short tube
Face is smoothly overlapped with second overlay surface.
2. the pre- repaired mouth steel pipe of weld bond as described in claim 1, which is characterized in that the stainless steel short tube and the steel pipe were
It is full of cooperation.
3. the pre- repaired mouth steel pipe of weld bond as described in claim 1, which is characterized in that the thickness of first overlay cladding is along described
Successively decrease in the direction of one end to the First terminal point.
4. the pre- repaired mouth steel pipe of weld bond as described in claim 1, which is characterized in that the thickness of second overlay cladding with it is described not
The thickness of rust steel short tube is identical.
5. the pre- repaired mouth steel pipe of weld bond as described in claim 1, which is characterized in that the weld bond end is groove shape.
6. the pre- repaired mouth steel pipe of weld bond as described in claim 1, which is characterized in that the outer diameter of the stainless steel short tube is than the steel
Big 0.05mm~the 0.08mm of internal diameter of pipe, to realize elastic conjunction.
7. the pre- repaired mouth steel pipe of weld bond as described in claim 1, which is characterized in that the welding bead overlapping rate of first overlay cladding is
3mm。
8. the pre- repaired mouth steel pipe of weld bond as described in claim 1, which is characterized in that first overlay cladding and second built-up welding
Layer is stainless steel weld overlays.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016211996256 | 2016-11-07 | ||
| CN201621199625 | 2016-11-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207990010U true CN207990010U (en) | 2018-10-19 |
Family
ID=63804499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721369152.4U Expired - Fee Related CN207990010U (en) | 2016-11-07 | 2017-10-23 | A kind of pre- repaired mouth steel pipe of weld bond |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207990010U (en) |
-
2017
- 2017-10-23 CN CN201721369152.4U patent/CN207990010U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103624378B (en) | Pipeline Hot Wire TIG Welding connects method | |
| CN103706928B (en) | The straight seam buried arc welding method of corrosion resistance metallurgical composite bimetal steel tube | |
| CN106975819B (en) | A kind of Ni-based composite bimetal pipe all-position automatic soldering method | |
| CN106270933A (en) | A kind of complex welding method of large aperture pipe end built-up welding corrosion resistant alloy composite steel tube | |
| CN103862145B (en) | A kind of duct butt-welding method of lining coating pipeline | |
| CN108705200A (en) | A kind of welding method of stainless steel inner lining composite plate | |
| CN106695079B (en) | The welding method of composite bimetal pipe | |
| CN110303261B (en) | All-position welding method for stainless steel pipeline for oil and gas transmission | |
| CN102528237A (en) | Welding process for carbon steel process pipeline | |
| CN104339123A (en) | Bimetal composite pipe welding method | |
| CN108723633A (en) | A kind of cable formula welding wire | |
| CN104028959A (en) | Welding method for stainless steel composite material | |
| CN107971606B (en) | Pre-joint coating method for welded joints of steel pipes | |
| CN107030359B (en) | Bimetal mechanical composite pipe welding process | |
| CN207990010U (en) | A kind of pre- repaired mouth steel pipe of weld bond | |
| CN110102861A (en) | A kind of metal transfer of MIG/MAG accurately controls one side welding with back formation method | |
| CN106964909B (en) | The manufacturing method of steel pipe is covered in pre- repaired mouth cermet | |
| CN208011164U (en) | A kind of pre- repaired mouth steel pipe of weld bond | |
| CA2433989A1 (en) | Coated stainless-steel/copper weld for electroplating cathode | |
| CN109834365B (en) | Processing method for butt welding of small-caliber inner anti-corrosion pipeline | |
| CN110773890A (en) | Circumferential welding method for stainless steel metallurgical composite pipe | |
| CN104227262A (en) | Twin electrode for welding of dissimilar materials | |
| CN108907606B (en) | Welding gun repairing method for CLOOS welding robot | |
| CN204805768U (en) | Anticorrosive sleeve pipeline of allumen connects | |
| CN103143831A (en) | Method for hot-pressure welding aluminum-steel dissimilar material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181019 Termination date: 20201023 |