CN104154340A - Seamless steel tube for chemical engineering - Google Patents
Seamless steel tube for chemical engineering Download PDFInfo
- Publication number
- CN104154340A CN104154340A CN201410402017.XA CN201410402017A CN104154340A CN 104154340 A CN104154340 A CN 104154340A CN 201410402017 A CN201410402017 A CN 201410402017A CN 104154340 A CN104154340 A CN 104154340A
- Authority
- CN
- China
- Prior art keywords
- high temperature
- layer
- steel tube
- steel pipe
- seamless steel
- 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
- F16L9/02—Rigid pipes of metal
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a seamless steel tube for chemical engineering. The seamless steel tube comprises a steel tube base body, a first high-temperature and corrosion resistant alloy layer, a second high-temperature and corrosion resistant alloy layer, a tungsten carbide coating and a nano ceramic coating. The first high-temperature and corrosion resistant alloy layer is arranged on the inner surface of the steel tube base body, the inner surface of the first high-temperature and corrosion resistant alloy layer is coated with the tungsten carbide coating, the second high-temperature and corrosion resistant alloy layer is arranged on the outer surface of the steel tube base body, and the outer surface of the second high-temperature and corrosion resistant alloy layer is coated with the nano ceramic coating. The seamless steel tube is good in high-temperature resistance and corrosion resistance and does not need to be frequently maintained, repairing and maintaining cost is reduced, and convenience is brought to actual production and application.
Description
Technical field
The present invention relates to steel pipe field, particularly relate to a kind of chemical industry seamless steel pipe.
Background technique
Weldless tube for structure (GB/T8162-1999) is the weldless tube for general structure and mechanical structure.That seamless steel pipe is because of the different a kind of kinds that are divided into of its purposes.Stainless steel seamless pipe for structure (GB/T14975-2002) is to spread all over hot rolling (squeeze, expand) and cold-drawn (rolling) weldless tube made for the pipelines of resistance to erosion of industry such as chemical industry, oil, light textile, medical treatment, food, machinery and the stainless steel of structural member and part.
The production method of stainless steel seamless pipe can be hot rolling, hot extrusion, cold rolling and cold-drawn.In recent years due to the progress of continuously casting and continuously rolling technology and the application of various new welding technology and Dynamic Non-Destruction Measurement, the quality of stainless steel welded pipe improves constantly, can in each use field, part substitute stainless steel seamless pipe, and cost ratio weldless tube is approximately low by 20%, in the Stainless Steel Tube of current industrial application, welded tube and weldless tube respectively account for 50%.
But present chemical industry is poor by the resistance to high temperature of seamless steel pipe, decay resistance is also poor, need to often safeguard, has increased maintenance expense, has brought inconvenience also to actual production and application.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of chemical industry seamless steel pipe, and resistance to high temperature is good, and fine corrosion resistance does not need frequent maintenance, has reduced maintenance expense, has brought facility to actual production and application.
For solving the problems of the technologies described above, the technological scheme that the present invention adopts is: a kind of chemical industry seamless steel pipe is provided, comprise: steel pipe matrix, the first high temperature resisting corrosion resisting alloy-layer, the second high temperature resisting corrosion resisting alloy-layer, tungsten carbide coating and nano ceramic coat, the internal surface of described steel pipe matrix is provided with the first described resistance to high temperature corrosion alloy-layer, the internal surface of the first described high temperature resisting corrosion resisting alloy-layer is coated with described tungsten carbide coating, the outer surface of described steel pipe matrix is provided with the second described high temperature resisting corrosion resisting alloy-layer, the outer surface of the second described high temperature resisting corrosion resisting alloy-layer is provided with described nano ceramic coat.
In a preferred embodiment of the present invention, the thickness of the first described high temperature resisting corrosion resisting alloy-layer is 2 ~ 5mm.
In a preferred embodiment of the present invention, the thickness of the second described high temperature resisting corrosion resisting alloy-layer is 3 ~ 8mm.
In a preferred embodiment of the present invention, the thickness of described nano ceramic coat is 0.5 ~ 2mm.
The invention has the beneficial effects as follows: resistance to high temperature of the present invention is good, fine corrosion resistance, does not need frequent maintenance, has reduced maintenance expense, has brought facility to actual production and application.
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 chemical industry seamless steel pipe, comprise: steel pipe matrix, the first high temperature resisting corrosion resisting alloy-layer, the second high temperature resisting corrosion resisting alloy-layer, tungsten carbide coating and nano ceramic coat, the internal surface of described steel pipe matrix is provided with the first described resistance to high temperature corrosion alloy-layer, the internal surface of the first described high temperature resisting corrosion resisting alloy-layer is coated with described tungsten carbide coating, the outer surface of described steel pipe matrix is provided with the second described high temperature resisting corrosion resisting alloy-layer, and the outer surface of the second described high temperature resisting corrosion resisting alloy-layer is provided with described nano ceramic coat.
Preferably, the thickness of the first described high temperature resisting corrosion resisting alloy-layer is 2 ~ 5mm.
Preferably, the thickness of the second described high temperature resisting corrosion resisting alloy-layer is 3 ~ 8mm.
Preferably, the thickness of described nano ceramic coat is 0.5 ~ 2mm.
Chemical industry of the present invention with the beneficial effect of seamless steel pipe is: resistance to high temperature of the present invention is good, and fine corrosion resistance does not need frequent maintenance, has reduced maintenance expense, has brought facility to actual production and application.
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 chemical industry seamless steel pipe, it is characterized in that, comprise: steel pipe matrix, the first high temperature resisting corrosion resisting alloy-layer, the second high temperature resisting corrosion resisting alloy-layer, tungsten carbide coating and nano ceramic coat, the internal surface of described steel pipe matrix is provided with the first described resistance to high temperature corrosion alloy-layer, the internal surface of the first described high temperature resisting corrosion resisting alloy-layer is coated with described tungsten carbide coating, the outer surface of described steel pipe matrix is provided with the second described high temperature resisting corrosion resisting alloy-layer, the outer surface of the second described high temperature resisting corrosion resisting alloy-layer is provided with described nano ceramic coat.
2. chemical industry seamless steel pipe according to claim 1, is characterized in that, the thickness of the first described high temperature resisting corrosion resisting alloy-layer is 2 ~ 5mm.
3. chemical industry seamless steel pipe according to claim 1, is characterized in that, the thickness of the second described high temperature resisting corrosion resisting alloy-layer is 3 ~ 8mm.
4. chemical industry seamless steel pipe according to claim 1, is characterized in that, the thickness of described nano ceramic coat is 0.5 ~ 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410402017.XA CN104154340A (en) | 2014-08-15 | 2014-08-15 | Seamless steel tube for chemical engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410402017.XA CN104154340A (en) | 2014-08-15 | 2014-08-15 | Seamless steel tube for chemical engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104154340A true CN104154340A (en) | 2014-11-19 |
Family
ID=51879914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410402017.XA Pending CN104154340A (en) | 2014-08-15 | 2014-08-15 | Seamless steel tube for chemical engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104154340A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937662A (en) * | 2016-06-29 | 2016-09-14 | 无锡必胜必精密钢管有限公司 | Large-diameter precision steel pipe |
| CN105952986A (en) * | 2016-06-29 | 2016-09-21 | 无锡必胜必精密钢管有限公司 | Steel pipe for gas cylinder |
-
2014
- 2014-08-15 CN CN201410402017.XA patent/CN104154340A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937662A (en) * | 2016-06-29 | 2016-09-14 | 无锡必胜必精密钢管有限公司 | Large-diameter precision steel pipe |
| CN105952986A (en) * | 2016-06-29 | 2016-09-21 | 无锡必胜必精密钢管有限公司 | Steel pipe for gas cylinder |
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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: 20141119 |
|
| WD01 | Invention patent application deemed withdrawn after publication |