CN107435764A - A kind of undercoating steel pipe and its manufacture method - Google Patents
A kind of undercoating steel pipe and its manufacture method Download PDFInfo
- Publication number
- CN107435764A CN107435764A CN201710722847.4A CN201710722847A CN107435764A CN 107435764 A CN107435764 A CN 107435764A CN 201710722847 A CN201710722847 A CN 201710722847A CN 107435764 A CN107435764 A CN 107435764A
- Authority
- CN
- China
- Prior art keywords
- pipe
- steel pipe
- undercoating
- anticorrosion
- ring
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 79
- 239000010959 steel Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000003466 welding Methods 0.000 claims abstract description 21
- 238000003032 molecular docking Methods 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims abstract description 6
- 238000010422 painting Methods 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 230000003628 erosive effect Effects 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 abstract description 9
- 238000000576 coating method Methods 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
-
- 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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention is a kind of undercoating steel pipe and its manufacture method, and this undercoating steel pipe is welded to connect by steel pipe and corrosionproof pipes ring, and steel pipe inner wall has anticorrosion undercoating；Its manufacture method is by the way that pipe end outer wall and corrosionproof pipes endless tube end are processed into half V-type or J-type groove, steel pipe and corrosionproof pipes ring group are docked to forming V-shape or U-shaped groove welding, after docking inside weld is polished flat, completed in pipe inner-wall spraying anti-corrosion undercoating；The undercoating steel pipe manufactured in this approach, the difficulty polished after conventional undercoating steel pipe welding using robot with repaired mouth is effectively reduced, the shortcomings of overcoming breakdown of coating during in order to prevent butt welding and use the installation complexity of inwall sliding sleeve technique.
Description
Technical field
The invention provides a kind of new undercoating steel pipe and its manufacture method, and stainless steel or Ni-based conjunction are installed additional using pipe end
The mode of golden pipe ring, the advantages of making full use of undercoating steel pipe, thoroughly solves the problems, such as the joint connection in site of undercoating steel pipe, effectively
Avoid at site girth welding seam breakdown of coating or repaired mouth quality it is unqualified caused by corrosion failure problem.
Background technology
Steel pipe undercoating aseptic technic is the corrosion-proof technology for pipeline of a comparative maturity.The difficult point of interior coated technique mainly exists
In inner-walls of duct after undercoating, how to solve the problems, such as that undercoating is destroyed during connection between two pipes.At present, the connection of pipeline
Substantially all using the method for welding.For undercoating steel pipe, when field joint welds, due to heat input, commissure and heat can be caused
Coating is burnt out at the zone of influence, causes coating failure.In order to solve this problem, the technology that is generally used in industry at present has following
Several processing methods：
First, big-diameter pipeline, after welding, by artificial enter reconditioning weld seam and repaired mouth.This method, volatilization gas is to human body
Injury it is very big, also dangerous, and light is bad in pipe, repaired mouth quality is also bad.
Second, small-caliber pipeline, robot repaired mouth is used after welding.Major defect equipment is complicated, and technique is cumbersome, repaired mouth matter
Amount is only closed.
3rd, sliding sleeve technology.Exactly making has the bilayer sleeve of thermal insulation layer between a kind of two layers, internal surface of sleeve pipe has and steel pipe
Inwall identical coating, before use, the steel tube end part that two needs are connected is expanding, then after daub outside sliding sleeve, close-fitting
Attach together it is expanding after steel tube end part, the butt welding of steel pipe both ends can be effective due to there is heat-insulated material inside sliding sleeve, during welding
Sliding sleeve inside coating is protected not to be burned.At sliding sleeve both ends and fastener for connection, due to there is fluid sealant, thus it is also very close to each other, it is close
The type selecting of sealing has consistent inhibitor effectiveness with coating.But this technique, implement more complicated, cunning should be made
Set, also expanding to steel tube end part, installation is also required to special installation, and whole installation was both complicated, and cost is again high.
So how realizing simple undercoating steel pipe scene, efficient, economy, connecting in high quality, needed jointly in industry
Solve the problems, such as.
The content of the invention
It is an object of the invention to provide a kind of undercoating steel pipe and its manufacture method, when solving field joint weldering, due to heat
Input, can cause coating at commissure and heat affected area to burn out, the problem of causing coating failure.
To achieve the above object, the technical scheme is that：
A kind of undercoating steel pipe, including steel pipe, anticorrosion pipe ring, pipe end connect with corrosionproof pipes boxing, the steel pipe inner wall
With anticorrosion undercoating；
Described anticorrosion pipe ring is stainless steel pipe ring or nickel-base alloy pipe ring；
The pipe end is in half V-type or J-type groove, and the corrosionproof pipes endless tube end is in half V-type or J-type groove；The steel pipe
Pipe end slope-mouth docks to form V-arrangement or U-shaped groove with the anticorrosion pipe ring groove, and the steel pipe passes through with the anticorrosion pipe ring
V-arrangement or U-shaped the groove welding docking.
The manufacture method of above undercoating steel pipe, its step are：
The first step, the pipe end outer wall is processed into half V-type or J-type groove, the corrosionproof pipes endless tube end is processed into
Half V-type or J-type groove；
Second step, the pipe end groove is docked to form V-arrangement or U-shaped groove, the steel with the anticorrosion pipe ring groove
Pipe is docked with the anticorrosion pipe ring by the V-arrangement or U-shaped groove welding；
3rd step, the steel pipe is docked into inside weld with anticorrosion pipe ring and polished flat；
4th step, in pipe inner-wall spraying anticorrosion undercoating made of the 3rd step, complete；
Before the 4th step anticorrosion with painting loses undercoating, the steel pipe is first preheated, to the processing of steel pipe inner wall sanding, detection
Sanding grade, dust concentration and anchor line degree, preheated again after qualified, then anticorrosion with painting erosion undercoating；
The advantage of the invention is that：Change conventional conventional plant production and site construction technology flow, propose one kind revolutionaryly
New pipe end form, first add pipe ring, then carry out undercoating spraying, fished pipe directly shipping carries out butt welding company to job site
Connect, because butt welding connecting portion is pipe ring between two steel pipes, welding will not destroy steel pipe undercoating, and pipeline can put into fortune
Battalion, and the robot internal joint patch of complexity is no longer carried out, reducing the construction costs, shorten the construction period.
Brief description of the drawings
Fig. 1 steel pipes and anticorrosion pipe ring V-butt connection diagram；
Two steel pipe V-butt docking schematic diagrames of Fig. 2；
Fig. 3 steel pipes and anticorrosion pipe ring U-shaped groove connection diagram；
Two steel pipe U-shaped groove docking schematic diagrames of Fig. 4；
In figure：1- steel pipes, 2- anticorrosion undercoating, 3- anticorrosion pipe rings, 4- docking inside welds, 5- pipe end grooves,
6- corrosionproof pipes endless tube grooves.
Embodiment
Such as Fig. 1,2, it is a kind of structural representation of undercoating steel duct embodiment 1 of the present invention.As shown in the figure：It includes steel
Pipe 1, anticorrosion pipe ring 3, the pipe end of steel pipe 1 weld with anticorrosion pipe ring 3, and the inwall of steel pipe 1 has anticorrosion undercoating
2。
Described anticorrosion pipe ring 3 is stainless steel pipe ring or nickel-base alloy pipe ring.
The pipe end of steel pipe 1 is processed to half V-type, and the pipe end outer wall of anticorrosion pipe ring 3 is also processed to half V-type；Steel
The pipe end slope-mouth of pipe 1 docks to form V-butt with the groove of anticorrosion pipe ring 3, by the V-butt by described steel pipe 1
With the butt welding of anticorrosion pipe ring 3.
The manufacture method of the undercoating steel pipe of above-mentioned installation anticorrosion pipe ring, its step are as follows：
The first step, by the tube end maching of steel pipe 1 into half V-type, by the tube end maching of anticorrosion pipe ring 3 into half V-type；
Second step, the pipe end groove 5 is docked to form V-butt with the anticorrosion pipe ring groove 6, the steel pipe 1
Pass through the V-butt butt welding with the anticorrosion pipe ring 3；
3rd step, the steel pipe 1 is docked into inside weld 4 with anticorrosion pipe ring 3 and polished flat；
4th step, in pipe inner-wall spraying anticorrosion undercoating 2 made of the 3rd step, complete.
Preferably, the anticorrosion pipe ring 3 described in the first step is stainless steel pipe ring or nickel-base alloy pipe ring.
In order to improve anticorrosion undercoating quality, before the 4th step anticorrosion with painting loses undercoating 2, by the steel pipe
1 first preheats, and then to the processing of steel pipe inner wall sanding, detection sanding grade, dust concentration and anchor line degree, is preheated again after qualified, so
Anticorrosion with painting erosion undercoating 2 afterwards.
Such as Fig. 3,4, it is a kind of structural representation of undercoating steel duct embodiment 2 of the present invention.As shown in the figure：It includes steel
Pipe 1, anticorrosion pipe ring 3, the pipe end of steel pipe 1 weld with anticorrosion pipe ring 3, and the inwall of steel pipe 1 has anticorrosion undercoating
2。
Described anticorrosion pipe ring 3 is stainless steel pipe ring or nickel-base alloy pipe ring.
The pipe end of steel pipe 1 is processed J-type groove, and the pipe end of anticorrosion pipe ring 3 is also processed to J-type groove；Steel pipe 1
Pipe end slope-mouth docks to form U-shaped groove with the groove of anticorrosion pipe ring 3, by the U-shaped groove by described steel pipe 1 with preventing
Corrode the butt welding of pipe ring 3.
A kind of manufacture method of above-mentioned undercoating steel pipe for installing anticorrosion pipe ring additional, its step are as follows：
The first step, by the tube end maching of steel pipe 1 into J-type groove, by the tube end maching of anticorrosion pipe ring 3 into J-type groove；
Second step, the pipe end groove 5 is docked to form U-shaped groove with the anticorrosion pipe ring groove 6, the steel pipe 1
Docked with the anticorrosion pipe ring 3 by the U-shaped groove welding；
3rd step, the steel pipe 1 is docked into inside weld 4 with anticorrosion pipe ring 3 and polished flat；
4th step, in pipe inner-wall spraying anticorrosion undercoating 2 made of the 3rd step, complete.
Preferably, the anticorrosion pipe ring 3 described in the first step is stainless steel pipe ring or nickel-base alloy pipe ring.
In order to improve anticorrosion undercoating quality, before the 4th step anticorrosion with painting loses undercoating 2, by the steel pipe
1 first preheats, and then to the processing of steel pipe inner wall sanding, detection sanding grade, dust concentration and anchor line degree, is preheated again after qualified, so
Anticorrosion with painting erosion undercoating 2 afterwards.
It is only presently preferred embodiments of the present invention in summary, is not used for limiting the practical range of the present invention.It is i.e. all
The equivalent changes and modifications made according to the content of scope of the present invention patent, it all should be the technology category of the present invention.
Claims (5)
- A kind of 1. undercoating steel pipe, it is characterised in that：Including steel pipe（1）, anticorrosion pipe ring（3）, the steel pipe（1）Pipe end is with preventing Corrode pipe ring（3）Welding, the steel pipe（1）Inwall has anticorrosion undercoating（2）.
- 2. undercoating steel pipe according to claim 1, it is characterised in that：Described anticorrosion pipe ring（3）It is stainless steel tube Ring or nickel-base alloy pipe ring.
- 3. undercoating steel pipe according to claim 1, it is characterised in that：The steel pipe（1）Pipe end has half V-type or J-type slope Mouth groove, the anticorrosion pipe ring（3）Pipe end has half V-type or J-type groove；The pipe end groove（5）With the anticorrosion Pipe ring groove（6）Docking forms V-arrangement or U-shaped groove, the steel pipe（1）With the anticorrosion pipe ring（3）Pass through the V-arrangement or U Shape groove welding docks.
- 4. it is a kind of wanted such as right 1 or 2 or 3 undercoating steel pipe manufacture method, it is characterised in that：Its step is：The first step, by the steel pipe（1）Tube end maching is into half V-type or J-type groove, by the anticorrosion pipe ring（3）Tube end maching Into half V-type or J-type groove；Second step, by the pipe end groove（5）With the corrosionproof pipes groove（6）Docking forms V-arrangement or U-shaped groove, institute State steel pipe（1）With the anticorrosion pipe ring（3）Docked by the V-arrangement or U-shaped groove welding；3rd step, by the steel pipe（1）With anticorrosion pipe ring（3）Dock inside weld（4）Polish flat；4th step, in pipe inner-wall spraying anticorrosion undercoating made of the 3rd step（2）, complete.
- 5. the manufacture method of undercoating steel pipe according to claim 4, it is characterised in that：In the 4th step anticorrosion with painting Lose undercoating（2）Before, by the steel pipe（1）First preheat, to the processing of steel pipe inner wall sanding, detection sanding grade, dust concentration and Anchor line degree, preheated again after qualified, then anticorrosion with painting erosion undercoating（2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710722847.4A CN107435764A (en) | 2017-08-22 | 2017-08-22 | A kind of undercoating steel pipe and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710722847.4A CN107435764A (en) | 2017-08-22 | 2017-08-22 | A kind of undercoating steel pipe and its manufacture method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107435764A true CN107435764A (en) | 2017-12-05 |
Family
ID=60460038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710722847.4A Pending CN107435764A (en) | 2017-08-22 | 2017-08-22 | A kind of undercoating steel pipe and its manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107435764A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111098089A (en) * | 2018-10-29 | 2020-05-05 | 兴化市中科渗铝钢管有限公司 | Welding method of high-strength stable aluminized pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4406188C1 (en) * | 1994-02-25 | 1995-03-09 | Butting H Gmbh & Co Kg | Plated pipe |
| CN101205994A (en) * | 2006-12-22 | 2008-06-25 | 北京安科管道工程科技有限公司 | Inner lining anti-corrosion metallic composite pipeline with easy welded joint structure |
| CN101586699A (en) * | 2009-06-30 | 2009-11-25 | 四川科新机电股份有限公司 | Stainless steel tube with welding bevel model, welding method and argon shield apparatus |
| JP2009291828A (en) * | 2008-06-06 | 2009-12-17 | Mitsubishi Heavy Ind Ltd | Pipe joining method |
| CN101776190A (en) * | 2010-01-20 | 2010-07-14 | 孙天明 | Repair-proof welded connection technology of inner walls of plastic-coated steel tubes |
| CN102506246A (en) * | 2011-10-21 | 2012-06-20 | 中国石油天然气集团公司 | Compound pipeline joint with base pipe as long as a liner pipe and manufacturing method thereof |
| CN202597946U (en) * | 2012-04-15 | 2012-12-12 | 湖南神宇新材料有限公司 | Anti-corrosion steel pipe with groove |
| CN203585612U (en) * | 2013-12-11 | 2014-05-07 | 西安向阳航天材料股份有限公司 | Narrow-gap butt welding groove of bimetal composite pipes |
| CN103822031A (en) * | 2013-05-03 | 2014-05-28 | 胜利油田金岛工程安装有限责任公司 | Glass-lined anti-corrosion steel pipe producing and welding processes |
| CN106051320A (en) * | 2016-06-24 | 2016-10-26 | 延安中海石油工程技术开发有限公司 | Alloy steel composite heat avoidance connector and method for connecting anticorrosive steel pipes through alloy steel composite heat avoidance connector |
-
2017
- 2017-08-22 CN CN201710722847.4A patent/CN107435764A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4406188C1 (en) * | 1994-02-25 | 1995-03-09 | Butting H Gmbh & Co Kg | Plated pipe |
| CN101205994A (en) * | 2006-12-22 | 2008-06-25 | 北京安科管道工程科技有限公司 | Inner lining anti-corrosion metallic composite pipeline with easy welded joint structure |
| JP2009291828A (en) * | 2008-06-06 | 2009-12-17 | Mitsubishi Heavy Ind Ltd | Pipe joining method |
| CN101586699A (en) * | 2009-06-30 | 2009-11-25 | 四川科新机电股份有限公司 | Stainless steel tube with welding bevel model, welding method and argon shield apparatus |
| CN101776190A (en) * | 2010-01-20 | 2010-07-14 | 孙天明 | Repair-proof welded connection technology of inner walls of plastic-coated steel tubes |
| CN102506246A (en) * | 2011-10-21 | 2012-06-20 | 中国石油天然气集团公司 | Compound pipeline joint with base pipe as long as a liner pipe and manufacturing method thereof |
| CN202597946U (en) * | 2012-04-15 | 2012-12-12 | 湖南神宇新材料有限公司 | Anti-corrosion steel pipe with groove |
| CN103822031A (en) * | 2013-05-03 | 2014-05-28 | 胜利油田金岛工程安装有限责任公司 | Glass-lined anti-corrosion steel pipe producing and welding processes |
| CN203585612U (en) * | 2013-12-11 | 2014-05-07 | 西安向阳航天材料股份有限公司 | Narrow-gap butt welding groove of bimetal composite pipes |
| CN106051320A (en) * | 2016-06-24 | 2016-10-26 | 延安中海石油工程技术开发有限公司 | Alloy steel composite heat avoidance connector and method for connecting anticorrosive steel pipes through alloy steel composite heat avoidance connector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111098089A (en) * | 2018-10-29 | 2020-05-05 | 兴化市中科渗铝钢管有限公司 | Welding method of high-strength stable aluminized pipe |
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| 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171205 |