CN104180087A - Seamless steel pipe for coal mine - Google Patents
Seamless steel pipe for coal mine Download PDFInfo
- Publication number
- CN104180087A CN104180087A CN201410398009.2A CN201410398009A CN104180087A CN 104180087 A CN104180087 A CN 104180087A CN 201410398009 A CN201410398009 A CN 201410398009A CN 104180087 A CN104180087 A CN 104180087A
- Authority
- CN
- China
- Prior art keywords
- corrosion
- steel pipe
- layer
- resistant reinforced
- reinforced layer
- 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
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Classifications
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- 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
- F16L58/04—Coatings characterised by the materials used
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- 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
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a seamless steel pipe for a coal mine. The seamless steel pipe comprises a steel pipe body, a first corrosion-resistant reinforced layer, a second corrosion-resistant reinforced layer, a first scaling prevention layer, a second scaling prevention layer and a nickel-cobalt alloy plated layer, wherein the outer surface of the steel pipe body is plated with the nickel-cobalt alloy plated layer; the first corrosion-resistant reinforced layer is arranged on the inner surface of the steel pipe body; the second corrosion-resistant reinforced layer is arranged on the outer surface of the nickel-cobalt alloy plated layer; the first scaling prevention layer is arranged on the outer surface of the first corrosion-resistant reinforced layer; the second scaling prevention layer is arranged on the outer surface of the second corrosion-resistant reinforced layer. Through the adoption of the scheme, the seamless steel pipe is excellent in corrosion resistance, less easy to scale, and suitable for being used for conveying media containing sulfur, calcium and magnesium ions underground, and reduces the cost for corrosion protection and descaling.
Description
Technical field
The present invention relates to steel pipe field, particularly relate to a kind of colliery seamless steel pipe.
Background technique
China is world's first coal power, and coal production accounts for 30% of the world, and as Chinese main energy sources, the safety in production of coal resources is to be related to national economy and society's continuation stable development, is related to the major issue of national energy security.
Aspect five of feedwater under coal mine, draining, plasma discharge, ventilation, gas-removing gases etc., must adopt pipeline.In the enterprise of application pipeline, approximately there is enterprise's employing steel pipeline of 95%, mainly concentrate on middle and small scale coal mine; 3% Coal Exploitation plastic pipe, mainly concentrates on big-and-middle-sized colliery.
But now bad for the decay resistance of the steel pipe of coal mine, easily fouling, is not suitable for delivered downhole sulfur-bearing, calcic, containing the medium of magnesium ion, has increased the expense of anticorrosion and scale removal.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of colliery seamless steel pipe, and corrosion resistance and good is less scaling, is suitable for delivered downhole sulfur-bearing, calcic, medium containing magnesium ion, has saved the expense of anticorrosion and scale removal.
Realize the locking of knife rest and unclamp by pneumatic mode, realize the accurate tool changing of knife rest by actuating motor and synchronous pulley, have that unfailing performance is high, registration, compact structure, transposition speed is fast, noise is little, the advantage such as cheap, simultaneously the application of miniature numerical control lathe and universal on have market prospects widely.
For solving the problems of the technologies described above, the technological scheme that the present invention adopts is: a kind of colliery seamless steel pipe is provided, comprise: steel pipe body, the first corrosion-resistant reinforced layer, the second corrosion-resistant reinforced layer, the first good antiscale property layer, the second good antiscale property layer and nickel-cobalt alloy plating, the outer surface of described steel pipe body is coated with described nickel-cobalt alloy plating, the internal surface of described steel pipe body is provided with the first described corrosion-resistant reinforced layer, the outer surface of described nickel-cobalt alloy plating is provided with the second corrosion-resistant reinforced layer, the outer surface of the first described corrosion-resistant reinforced layer is provided with the first described good antiscale property layer, the outer surface of the second described corrosion-resistant reinforced layer is provided with the second described good antiscale property layer.
In a preferred embodiment of the present invention, the thickness of the first described corrosion-resistant reinforced layer is more than or equal to the thickness of the second described corrosion-resistant reinforced layer.
In a preferred embodiment of the present invention, the thickness of the second described good antiscale property layer is more than or equal to the thickness of the first described good antiscale property layer.
In a preferred embodiment of the present invention, the thickness of described nickel-cobalt alloy plating is 3 ~ 7 μ m.
The invention has the beneficial effects as follows: corrosion resistance and good of the present invention, less scaling, be suitable for delivered downhole sulfur-bearing, calcic, medium containing magnesium ion, save the expense of anticorrosion and scale removal.
Embodiment
To the technological scheme in the embodiment of the present invention be clearly and completely described below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making all other embodiments that obtain under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention comprises:
A kind of colliery seamless steel pipe, comprise: steel pipe body, the first corrosion-resistant reinforced layer, the second corrosion-resistant reinforced layer, the first good antiscale property layer, the second good antiscale property layer and nickel-cobalt alloy plating, the outer surface of described steel pipe body is coated with described nickel-cobalt alloy plating, the internal surface of described steel pipe body is provided with the first described corrosion-resistant reinforced layer, the outer surface of described nickel-cobalt alloy plating is provided with the second corrosion-resistant reinforced layer, the outer surface of the first described corrosion-resistant reinforced layer is provided with the first described good antiscale property layer, the outer surface of the second described corrosion-resistant reinforced layer is provided with the second described good antiscale property layer.
Preferably, the thickness of the first described corrosion-resistant reinforced layer is more than or equal to the thickness of the second described corrosion-resistant reinforced layer.
Preferably, the thickness of the second described good antiscale property layer is more than or equal to the thickness of the first described good antiscale property layer.
Preferably, the thickness of described nickel-cobalt alloy plating is 3 ~ 7 μ m.
Colliery of the present invention with the beneficial effect of seamless steel pipe is: corrosion resistance and good of the present invention, and less scaling, be suitable for delivered downhole sulfur-bearing, calcic, medium containing magnesium ion, save the expense of anticorrosion and scale removal.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (4)
1. a colliery seamless steel pipe, it is characterized in that, comprise: steel pipe body, the first corrosion-resistant reinforced layer, the second corrosion-resistant reinforced layer, the first good antiscale property layer, the second good antiscale property layer and nickel-cobalt alloy plating, the outer surface of described steel pipe body is coated with described nickel-cobalt alloy plating, the internal surface of described steel pipe body is provided with the first described corrosion-resistant reinforced layer, the outer surface of described nickel-cobalt alloy plating is provided with the second corrosion-resistant reinforced layer, the outer surface of the first described corrosion-resistant reinforced layer is provided with the first described good antiscale property layer, the outer surface of the second described corrosion-resistant reinforced layer is provided with the second described good antiscale property layer.
2. colliery according to claim 1 seamless steel pipe, is characterized in that, the thickness of the first described corrosion-resistant reinforced layer is more than or equal to the thickness of the second described corrosion-resistant reinforced layer.
3. colliery according to claim 1 seamless steel pipe, is characterized in that, the thickness of the second described good antiscale property layer is more than or equal to the thickness of the first described good antiscale property layer.
4. colliery according to claim 1 seamless steel pipe, is characterized in that, the thickness of described nickel-cobalt alloy plating is 3 ~ 7 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410398009.2A CN104180087A (en) | 2014-08-14 | 2014-08-14 | Seamless steel pipe for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410398009.2A CN104180087A (en) | 2014-08-14 | 2014-08-14 | Seamless steel pipe for coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104180087A true CN104180087A (en) | 2014-12-03 |
Family
ID=51961331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410398009.2A Pending CN104180087A (en) | 2014-08-14 | 2014-08-14 | Seamless steel pipe for coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104180087A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937676A (en) * | 2016-06-29 | 2016-09-14 | 无锡必胜必精密钢管有限公司 | Construction steel pipe |
| CN105937672A (en) * | 2016-06-29 | 2016-09-14 | 无锡必胜必精密钢管有限公司 | Composite precise steel pipe |
| CN105937675A (en) * | 2016-06-29 | 2016-09-14 | 无锡必胜必精密钢管有限公司 | Steel pipe for mining pipeline |
-
2014
- 2014-08-14 CN CN201410398009.2A patent/CN104180087A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937676A (en) * | 2016-06-29 | 2016-09-14 | 无锡必胜必精密钢管有限公司 | Construction steel pipe |
| CN105937672A (en) * | 2016-06-29 | 2016-09-14 | 无锡必胜必精密钢管有限公司 | Composite precise steel pipe |
| CN105937675A (en) * | 2016-06-29 | 2016-09-14 | 无锡必胜必精密钢管有限公司 | Steel pipe for mining pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141203 |
|
| WD01 | Invention patent application deemed withdrawn after publication |