CN215293922U - Stainless steel composite spiral welded pipe - Google Patents
Stainless steel composite spiral welded pipe Download PDFInfo
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- CN215293922U CN215293922U CN202121125216.2U CN202121125216U CN215293922U CN 215293922 U CN215293922 U CN 215293922U CN 202121125216 U CN202121125216 U CN 202121125216U CN 215293922 U CN215293922 U CN 215293922U
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Abstract
The utility model discloses a compound spiral welded tube of stainless steel, including the stainless steel layer, the surface cover on stainless steel layer is equipped with the carbon steel layer, the surface coating on carbon steel layer has the antioxidation layer, the material on stainless steel layer and carbon steel layer is stainless steel compound book board and carbon steel respectively, the surface on stainless steel layer is provided with two liang of a set of carbon steel lugs, the inside on carbon steel layer is provided with two liang of a set of stainless steel lugs, the carbon steel lug runs through to the inside on carbon steel layer, the stainless steel lug runs through to the inside on stainless steel layer, the material of antioxidation layer is chromium oxide. The utility model discloses a cooperation between stainless steel layer and the carbon steel layer increases the oxidation resistance between the tubular product, is used for preventing outside corrosive substance from oxidizing the carbon steel layer through setting up the oxidation resisting layer, has solved the compound pipe of rust steel simultaneously, is gapped between two pipes, produces the potential corrosion very easily, and when the pipe connection, kneck gassing, crackle, problem of defects such as layering moreover.
Description
Technical Field
The utility model relates to a metal composite welds pipe technical field, specifically is the compound spiral welded tube of stainless steel.
Background
The pipeline transportation is indispensable in our daily life, the stainless steel composite pipe has corrosion resistance, smooth surface and small fluid resistance in the processes of water transportation, hot water transportation, gas transportation, oil transportation and the like, and keeps the advantages of high mechanical strength of the steel pipe, welding, threaded connection and good sealing performance.
The stainless steel and the carbon steel in the stainless steel composite coiled plate are metallurgically bonded, so that the mechanical bonding defect cannot occur on the material, and meanwhile, the welding process of the stainless steel composite plate is mature, the change of the spiral welded pipe equipment is small, and the application specification range is large.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a compound spiral welded pipe of stainless steel possesses corrosion-resistant, clean, high strength, low price's advantage, has solved the compound pipe of rust steel, is gapped between two pipes, produces the potential corrosion very easily, and when the pipe connection, kneck gassing, crackle, problem of defects such as layering moreover.
In order to achieve the above object, the utility model provides a following technical scheme: the stainless steel composite spiral welded pipe comprises a stainless steel layer, wherein a carbon steel layer is sleeved on the surface of the stainless steel layer, an oxidation resistant layer is coated on the surface of the carbon steel layer, the stainless steel layer and the carbon steel layer are respectively made of a stainless steel composite coiled plate and carbon steel, and the oxidation resistant layer is made of chromium sesquioxide.
Preferably, every two of the stainless steel bumps are arranged on the surface of the stainless steel layer, and every two of the stainless steel bumps are arranged in the carbon steel layer.
Preferably, the carbon steel bumps penetrate into the carbon steel layer, and the stainless steel bumps penetrate into the stainless steel layer.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model discloses a cooperation between stainless steel layer and the carbon steel layer increases the oxidation resistance between the tubular product, is used for preventing outside corrosive substance from oxidizing the carbon steel layer through setting up the oxidation resisting layer, has solved the compound pipe of rust steel simultaneously, is gapped between two pipes, produces the potential corrosion very easily, and when the pipe connection, kneck gassing, crackle, problem of defects such as layering moreover.
2. The utility model discloses it is metallurgical to combine between compound roll board of stainless steel and the carbon steel, mechanical bonding defect can not take place on the material, be used for increasing the metallurgical bonding area on stainless steel layer and carbon steel layer through setting up stainless steel lug and carbon steel lug, thereby increase the stability between stainless steel layer and the carbon steel layer, can not produce electrochemical effect, through running through carbon steel lug and stainless steel lug respectively to the inside of carbon steel layer and stainless steel layer and be used for increasing the stable in structure between stainless steel layer and the carbon steel layer, thereby increase the life of tubular product, chromium oxide is insoluble in water, mellow wine, acid and alkali, it is extremely stable to the light, atmosphere, high temperature and corrosive gases such as sulfur dioxide and hydrogen sulfide, thereby make the carbon steel layer can not corroded, form the non-dynamic involucra of thickness about a micron on the surface of carbon steel layer, because the existence of this film makes the stainless steel base corrode in various media and is obstructed, this phenomenon is called passivation.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a stainless steel layer; 2. a carbon steel layer; 3. an anti-oxidation layer; 4. a stainless steel bump; 5. Carbon steel bumps.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description herein, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings to facilitate the description of the patent and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting of the patent. In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can, for example, be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1, the stainless steel composite spiral welded pipe comprises a stainless steel layer 1, a carbon steel layer 2 is sleeved on the surface of the stainless steel layer 1, an oxidation resistant layer 3 is coated on the surface of the carbon steel layer 2, the oxidation resistance between pipes is increased by the cooperation between the stainless steel layer 1 and the carbon steel layer 2, the oxidation resistant layer 3 is arranged to prevent external corrosive substances from oxidizing the carbon steel layer 2, the stainless steel layer 1 and the carbon steel layer 2 are respectively made of a stainless steel composite coiled plate and carbon steel, the stainless steel composite coiled plate and the carbon steel are metallurgically bonded, no mechanical bonding defect occurs on the materials, a set of carbon steel bumps 5 are arranged on the surface of the stainless steel layer 1, a set of stainless steel bumps 4 are arranged inside the carbon steel layer 2, and the metallurgical bonding area between the stainless steel layer 1 and the carbon steel layer 2 is increased by arranging the stainless steel bumps 4 and the carbon steel bumps 5, thereby increasing the stability between the stainless steel layer 1 and the carbon steel layer 2, and not generating electrochemical effect, the carbon steel bump 5 penetrates through the inside of the carbon steel layer 2, the stainless steel bump 4 penetrates through the inside of the stainless steel layer 1, by penetrating the carbon steel bumps 5 and the stainless steel bumps 4 into the carbon steel layer 2 and the stainless steel layer 1 respectively for increasing the structural stability between the stainless steel layer 1 and the carbon steel layer 2, thereby prolonging the service life of the pipe, the material of the oxidation resistant layer 3 is chromium sesquioxide which is insoluble in water, alcohol, acid and alkali, is stable to light, atmosphere, high temperature and corrosive gases such as sulfur dioxide, hydrogen sulfide and the like, so that the carbon steel layer 2 can not be corroded, the non-dynamic film with the thickness of about one micron is formed on the surface of the carbon steel layer 2, and the corrosion of the stainless steel substrate in various media is hindered due to the existence of the film, and the phenomenon is called passivation.
When the stainless steel composite coiled plate is used, the stainless steel composite coiled plate and the carbon steel are metallurgically bonded, the mechanical bonding defect cannot occur on the material, the metallurgical bonding area between the stainless steel layer 1 and the carbon steel layer 2 is increased by arranging the stainless steel lug 4 and the carbon steel lug 5, the stability between the stainless steel layer 1 and the carbon steel layer 2 is increased, the electrochemical effect cannot be generated, the carbon steel lug 5 and the stainless steel lug 4 respectively penetrate into the carbon steel layer 2 and the stainless steel layer 1 to increase the structural stability between the stainless steel layer 1 and the carbon steel layer 2, so that the service life of the tubular product is prolonged, the chromium oxide is insoluble in water, alcohol, acid and alkali, the carbon steel layer 2 cannot be corroded due to the stability to light, atmosphere, high temperature, sulfur dioxide, hydrogen sulfide and other corrosive gases, the non-dynamic film with the thickness of about one micron is formed on the surface of the carbon steel layer 2, and the corrosion of a stainless steel body in various media is blocked due to the existence of the film, this phenomenon is called passivation and its production process is as follows: and (3) dividing the stainless steel composite coiled plate into strips according to the diameter of the coiled pipe, cutting the strips into strips with certain width, conveying the cut stainless steel composite strips into a pipeline forming machine, and changing the strips into pipelines with the preset diameters under the action of different forming rollers.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. Stainless steel composite spiral welded pipe, including stainless steel layer (1), its characterized in that: the surface cover of stainless steel layer (1) is equipped with carbon steel layer (2), the surface of carbon steel layer (2) is brushed with antioxidation layer (3), the material on stainless steel layer (1) and carbon steel layer (2) is stainless steel composite coiled plate and carbon steel respectively, the material of antioxidation layer (3) is chromium oxide.
2. The stainless steel composite spiral welded pipe of claim 1, wherein: the surface of the stainless steel layer (1) is provided with a pair of carbon steel lugs (5), and the inside of the carbon steel layer (2) is provided with a pair of stainless steel lugs (4).
3. The stainless steel composite spiral welded pipe of claim 2, wherein: the carbon steel bump (5) penetrates into the carbon steel layer (2), and the stainless steel bump (4) penetrates into the stainless steel layer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121125216.2U CN215293922U (en) | 2021-05-25 | 2021-05-25 | Stainless steel composite spiral welded pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121125216.2U CN215293922U (en) | 2021-05-25 | 2021-05-25 | Stainless steel composite spiral welded pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215293922U true CN215293922U (en) | 2021-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202121125216.2U Active CN215293922U (en) | 2021-05-25 | 2021-05-25 | Stainless steel composite spiral welded pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN215293922U (en) |
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2021
- 2021-05-25 CN CN202121125216.2U patent/CN215293922U/en active Active
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