CN106583976A - Internal strengthening welding technology of stainless steel tube - Google Patents
Internal strengthening welding technology of stainless steel tube Download PDFInfo
- Publication number
- CN106583976A CN106583976A CN201611197042.4A CN201611197042A CN106583976A CN 106583976 A CN106583976 A CN 106583976A CN 201611197042 A CN201611197042 A CN 201611197042A CN 106583976 A CN106583976 A CN 106583976A
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- welded pipe
- steel tube
- steel welded
- pipe
- 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.)
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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
- 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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses an internal strengthening welding technology of a stainless steel tube. The internal strengthening welding technology comprises the steps of putting the welded stainless steel tube which is qualified after detection in an internal welding station, and fixing the stainless steel tube; and then, carrying out continuous welding from one end on the inner side of a weld joint of the stainless steel tube to the other end. According to the internal strengthening welding technology of the stainless steel tube, the leaking risk of the stainless steel tube can be decreased to 0.2% or below, leakage problems and potential safety hazards are basically eliminated, strength of the weld joint is greatly strengthened, the service life of the stainless steel tube is greatly prolonged, and the engineering meaning is quite remarkable.
Description
Technical field
The present invention relates to stainless steel welded pipe welding field, more particularly to one kind is in traditional stainless steel welded pipe pipe external welding technique
On the basis of increase stainless steel tube in strengthen welding procedure.
Background technology
Welded pipe is divided into straight line welded tube and spiral welded pipe, wherein, middle pipe with small pipe diameter typically adopts straight line welded tube structure, Large Diameter Pipeline
Typically adopt spiral welded pipe structure.Traditional stainless steel welded pipe after pipe external welding technique, is needing to carry out the water pressure test, is surpassing
Sonic flaw detection detection, EDDY CURRENT or ray detection etc., the welded tube after detection is qualified can dispatch from the factory and sell.This rustless steel weldering
When pipe is as the gas transport pipeline for being embedded in ground end, its weld seam occurred after 5 years reveal risk be 2%-3%, service life
Reach more than 8-10.
However, because the stainless steel welded pipe as gas transport pipeline is embedded in ground end, it is difficult to whether occur leakage to it
Detected, it is impossible to judge whether the working condition of the pipeline is normal, and the crush test carried out in production process can not be examined
The leak time of welding is measured, once there is leakage, larger economic loss even security incident is likely to result in.
In order to solve this problem, the present invention proposes a kind of welding procedure of straight line welded tube small-bore mainly in,
It will carry out pipe external welding technique and detects qualified stainless steel welded pipe, then carry out strengthening Welder in a stainless steel tube
Skill.Although only increased 2% on the total production cost of former stainless steel welded pipe, the weld seam of stainless steel welded pipe can be made after 10 years
The risk for leakage occur is down to less than 0.2%, and service life can reach more than 30 years, and gas transport pipeline has been prevented substantially
There is the problem and potential safety hazard of leakage, considerably reduce maintenance and change the expense of welded tube, engineering significance is very notable.
The content of the invention
It is an object of the invention to provide strengthen welding procedure in a kind of stainless steel tube, can be by the risk of leakage of stainless steel welded pipe
Less than 0.2% is down to, problem and the potential safety hazard for occurring leaking has been prevented substantially, and weld strength is significantly strengthened, no
The life-span of rust steel welded tube is highly improved, and engineering significance is very notable.
For achieving the above object, the present invention is provided and strengthen in a kind of stainless steel tube welding procedure, and it is comprised the following steps：
Stainless steel welded pipe fixing step：To weld and detect that qualified stainless steel welded pipe is placed on interior welding post and goes forward side by side
Row is fixed；
Interior weldering step：The other end is persistently soldered to from the weld seam inner opposite end of the stainless steel welded pipe.
As a further improvement on the present invention, the interior weldering step adopts automatic welder.
Used as the further improvement of the present invention, described stainless steel welded pipe wall thickness is 3-12mm.
Used as the further improvement of the present invention, the weld seam of the stainless steel welded pipe is linear, in the stainless steel welded pipe
In fixing step, the weld seam outside of stainless steel welded pipe is made down, welded by the way of downhand welding in the interior weldering step.
As the further improvement of the present invention, cleaning step in weld seam inner side is provided with before the stainless steel welded pipe fixing step
Suddenly：Stainless steel welded pipe is placed on into cleaning station, and is pointed to the weld seam inner surface 10mm-50mm width in stainless steel welded pipe pipe
The greasy dirt of scope, dirt and burr etc. are cleared up.
Beneficial effect
Compared with prior art, welding procedure is strengthened in stainless steel tube of the invention and there is advantages below：
1st, stainless steel welded pipe is extra to increase after conventional tube external welding technique and on the basis of being detected as certified products
Strengthen welding procedure in stainless steel tube, the risk of leakage of stainless steel welded pipe is down to into less than 0.2%, improve stainless steel welded pipe
Safety coefficient, has prevented the situation for occurring weld leakage in the range of stainless steel welded pipe service life substantially, effectively prevent because
The potential safety hazard that causes of leakage, it is adaptable to need to be embedded in ground end throughout the year and be difficult to the gas transport pipeline of Leak Detection；
2nd, due in the weld seam of stainless steel welded pipe outside welded, weld strength is significantly strengthened, rustless steel
The service life of welded tube is promoted to more than 30 years from original 8-10, and the frequency for changing stainless steel welded pipe is lower, equipment dimension
Shield cost is declined to a great extent.
By description below and accompanying drawing is combined, the present invention will become more fully apparent, these accompanying drawings are used to explain the present invention
Embodiment.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram for strengthening welding procedure in stainless steel tube.
In figure, stainless steel welded pipe 1；Welding rod 2；Outside weld 3；Inside weld 4.
Specific embodiment
With reference now to Description of Drawings embodiments of the invention,.
Embodiment
The specific embodiment of the present invention is as shown in figure 1, strengthen welding procedure, it is applied to wall thickness in a kind of stainless steel tube
For the stainless steel welded pipe of 3-12mm, welded by the way of automatic welder in the present embodiment, it is comprised the following steps：
Weld seam inner side cleanup step：To weld and detect that qualified stainless steel welded pipe 1 is placed on cleaning station, and be pointed to
The greasy dirt of the weld seam inner surface 10mm-50mm width ranges in the pipe of stainless steel welded pipe 1, dirt and burr etc. are cleared up；
Stainless steel welded pipe fixing step：Interior welding post that stainless steel welded pipe 1 is placed on automatic welder is simultaneously carried out solid
It is fixed；In the present embodiment, the weld seam of stainless steel welded pipe 1 linearly, welds for convenience and reaches the best effects of welding, adopts
Downhand welding mode, the outside weld 3 allowed on stainless steel welded pipe 1 is arranged down；
Interior weldering step：The welding rod 2 on automatic welder is set to be moved to the weld seam inner opposite end of stainless steel welded pipe 1 and start weldering
Connect, until welding rod 2 is persistently soldered to the other end on the inside of the weld seam of stainless steel welded pipe 1, form inside weld 4.
In above-described embodiment, according to the diameter dimension and length of stainless steel welded pipe 1, interior weldering step may also be employed human weld
Mode.
Stainless steel welded pipe is extra to increase not after conventional tube external welding technique and on the basis of being detected as certified products
Strengthen welding procedure in rust steel pipe, the risk of leakage of stainless steel welded pipe is down to into less than 0.2%, improve the peace of stainless steel welded pipe
Overall coefficient, has prevented the situation for occurring weld leakage in the range of stainless steel welded pipe service life substantially, effectively prevents because letting out
The potential safety hazard that causes of leakage, it is adaptable to need to be embedded in ground end throughout the year and be difficult to the gas transport pipeline of Leak Detection.This
Outward, due in the weld seam of stainless steel welded pipe outside welded, weld strength is significantly strengthened, and stainless steel welded pipe makes
It is promoted to more than 30 years from original 8-10 with the life-span, the frequency for changing stainless steel welded pipe is lower, and cost of equipment maintenance is obtained
To declining to a great extent, engineering significance is very notable.
Above in association with most preferred embodiment, invention has been described, but the invention is not limited in enforcement disclosed above
Example, and modification, equivalent combinations that various essence of the invention are carried out should be covered.
Claims (5)
1. welding procedure is strengthened in a kind of stainless steel tube, it is characterised in that comprise the following steps：
Stainless steel welded pipe fixing step：To weld and detect that qualified stainless steel welded pipe (1) is placed on interior welding post and goes forward side by side
Row is fixed；
Interior weldering step：The other end is persistently soldered to from the weld seam inner opposite end of the stainless steel welded pipe (1).
2. welding procedure is strengthened in a kind of stainless steel tube according to claim 1, it is characterised in that the interior weldering step is adopted
Use automatic welder.
3. welding procedure is strengthened in a kind of stainless steel tube according to claim 1, it is characterised in that described rustless steel weldering
The wall thickness of pipe (1) is 3-12mm.
4. welding procedure is strengthened in a kind of stainless steel tube according to claim 1, it is characterised in that the stainless steel welded pipe
(1) weld seam linearly, in the stainless steel welded pipe fixing step, makes the weld seam outside of stainless steel welded pipe (1) down, described
Welded by the way of downhand welding in interior weldering step.
5. welding procedure is strengthened in a kind of stainless steel tube according to claim 1, it is characterised in that the stainless steel welded pipe
Weld seam inner side cleanup step is provided with before fixing step：Stainless steel welded pipe (1) is placed on into cleaning station, and is pointed to rustless steel weldering
Greasy dirt, dirt and the burr for managing the weld seam inner surface 10mm-50mm width ranges in (1) pipe is cleared up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611197042.4A CN106583976B (en) | 2016-12-22 | 2016-12-22 | A kind of stainless steel tube is interior to reinforce welding procedure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611197042.4A CN106583976B (en) | 2016-12-22 | 2016-12-22 | A kind of stainless steel tube is interior to reinforce welding procedure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106583976A true CN106583976A (en) | 2017-04-26 |
| CN106583976B CN106583976B (en) | 2019-01-29 |
Family
ID=58602206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611197042.4A Active CN106583976B (en) | 2016-12-22 | 2016-12-22 | A kind of stainless steel tube is interior to reinforce welding procedure |
Country Status (1)
| Country | Link |
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| CN (1) | CN106583976B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440090A (en) * | 1993-06-07 | 1995-08-08 | Atlantic Richfield Company | Duplex stainless steel welding method |
| CN101633074A (en) * | 2009-07-16 | 2010-01-27 | 西安交通大学 | Welding method of girth weld of inner cladding thin-walled stainless steel composite tube |
| CN201471100U (en) * | 2009-08-24 | 2010-05-19 | 武汉船用机械有限责任公司 | Self-conductance controllable tubular straight-line joint welding device |
| 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 |
| CN103612020A (en) * | 2013-12-10 | 2014-03-05 | 北京隆盛泰科石油管科技有限公司 | Method for producing composite pipes by adopting composite steel plates in electric resistance welding and surfacing modes |
| CN104942406A (en) * | 2015-05-20 | 2015-09-30 | 大唐陕西发电有限公司户县热电厂 | Boiler water cooling wall burst pipe welding technology |
| CN105364276A (en) * | 2015-10-31 | 2016-03-02 | 江苏振光电力设备制造有限公司 | Welding machining technology of high-strength-steel steel pipe tower |
-
2016
- 2016-12-22 CN CN201611197042.4A patent/CN106583976B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440090A (en) * | 1993-06-07 | 1995-08-08 | Atlantic Richfield Company | Duplex stainless steel welding method |
| CN101633074A (en) * | 2009-07-16 | 2010-01-27 | 西安交通大学 | Welding method of girth weld of inner cladding thin-walled stainless steel composite tube |
| CN201471100U (en) * | 2009-08-24 | 2010-05-19 | 武汉船用机械有限责任公司 | Self-conductance controllable tubular straight-line joint welding device |
| 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 |
| CN103612020A (en) * | 2013-12-10 | 2014-03-05 | 北京隆盛泰科石油管科技有限公司 | Method for producing composite pipes by adopting composite steel plates in electric resistance welding and surfacing modes |
| CN104942406A (en) * | 2015-05-20 | 2015-09-30 | 大唐陕西发电有限公司户县热电厂 | Boiler water cooling wall burst pipe welding technology |
| CN105364276A (en) * | 2015-10-31 | 2016-03-02 | 江苏振光电力设备制造有限公司 | Welding machining technology of high-strength-steel steel pipe tower |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106583976B (en) | 2019-01-29 |
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