CN2864279Y - Two-level structure metal tube - Google Patents
Two-level structure metal tube Download PDFInfo
- Publication number
- CN2864279Y CN2864279Y CN 200520133485 CN200520133485U CN2864279Y CN 2864279 Y CN2864279 Y CN 2864279Y CN 200520133485 CN200520133485 CN 200520133485 CN 200520133485 U CN200520133485 U CN 200520133485U CN 2864279 Y CN2864279 Y CN 2864279Y
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- pipe
- bushing pipe
- metal tube
- double layer
- alloy
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Abstract
The utility model relates to a metallic pipe with bilayer structure, to be specific, the metallic pipe of bilayer structure that has high tension and high tenacity steel structure at the external layer and the corrosion-resistant alloy structure at the internal layer. The section of the said bilayer metallic pipe is in the shape of round ring; its external layer is made of pressure-resistant seamless pipe; its internal layer is made of alloy lining pipe; no clearance is reserved in between the internal and external layers; the scope for the scale between the thickness of the pressure-resistant seamless steel pipe at the external layer and that of the alloy lining pipe at the internal layer extends from 7:1 to 3:1; the alloy lining pipe at the internal layer is made of brass, nickel-copper alloy, tin bronze alloy, aluminum alloy and stainless steel; Ra, the surface roughness for the alloy lining pipe at the internal layer shall be within 0.8Mum; coating layer or plastic spraying layer is applied to the external surface of the pressure-resistant seamless steel pipe at the external layer. This sort of bilayer metallic pipe can not only maintain excellent anti-corrosion performance, but also enhance the strength of pipe body and the abrasion resistance performance of the external layer, as well as prolong the service life and save great amount of valuable alloy materials.
Description
Technical field
The utility model relates to double-deck metal tube, relates to outer high strength, high-ductility steel structure particularly and the double layer construction metal tube of internal layer corrosion resisting alloy structure.
Background technique
Be widely used in the corrosion resistant metal pipe of the various alloy materials in fields such as medicine, chemical industry, refrigeration, instrument and aerospace engineering at present; because alloy material self insufficient strength; these metal tubes in use can be subjected to the outside and collide with and cause pipeline to be subjected to mechanical deterioration and scrap, and must often change or take extra protective measure.The metallic material price of these prior art corrosion resistant metal pipes height own often upgrades making user cost and maintenance cost all very high.Therefore, need a kind of novel metal pipe, can either guarantee to have excellent corrosion resisting performance, self has very high mechanical strength and toughness again.
Summary of the invention
The purpose of this utility model provides a kind of double layer construction metal tube that is used in fields such as medicine, chemical industry, refrigeration, instrument and aerospace engineering, can overcome existing the problems referred to above of corrosion resistant metal pipe of prior art, realize increasing working life, reduce the purpose of use, maintenance cost.
A kind of double layer construction metal tube of the present utility model, the cross section is a circular shape, and skin is withstand voltage seamless steel pipe, and internal layer is the alloy bushing pipe, do not have the gap between the inside and outside layer, it is characterized in that: the thickness proportion scope of withstand voltage seamless steel pipe of described skin and inner alloy bushing pipe is 7: 1 to 3: 1.
Described double layer construction metal tube of the present utility model is characterized in that: described inner alloy bushing pipe is the brass bushing pipe.
Described double layer construction metal tube of the present utility model is characterized in that: described inner alloy bushing pipe is the monel bushing pipe.
Described double layer construction metal tube of the present utility model is characterized in that: described inner alloy bushing pipe is the tin bronze bushing pipe.
Described double layer construction metal tube of the present utility model is characterized in that: described inner alloy bushing pipe is the aluminum alloy bushing pipe.
Described double layer construction metal tube of the present utility model is characterized in that: described inner alloy bushing pipe is the stainless steel bushing pipe.
Described double layer construction metal tube of the present utility model is characterized in that: the ratio of withstand voltage seamless steel pipe of described skin and stainless steel lining tube thickness is 7: 1.
Described double layer construction metal tube of the present utility model is characterized in that: the ratio of withstand voltage seamless steel pipe of described skin and brass bushing pipe or monel bushing pipe or tin bronze bushing pipe thickness is 6: 1.
Described double layer construction metal tube of the present utility model is characterized in that: the ratio of withstand voltage seamless steel pipe of described skin and aluminum alloy bushing pipe thickness is 5: 1.
Described double layer construction metal tube of the present utility model is characterized in that: inner alloy bushing pipe inside surface roughness is that Ra allows maximum value 0.8 μ m, and outer withstand voltage seamless steel pipe outer surface has the coat of paint or plastic-blasting layer.
Adopt double layer construction metal tube of the present utility model, both can keep the corrosion resistance of prior art alloy pipe, increased body intensity and outer wear-resisting property again, can increase the service life and save a large amount of expensive alloy materials.
Description of drawings
Fig. 1 is the schematic cross-section of double layer construction metal tube of the present utility model.
Embodiment
Be elaborated below in conjunction with the structure of accompanying drawing to integrated cylinder manifold of the present utility model.The internal surface of the outer withstand voltage seamless steel pipe of reference character 1 expression, mark 2 expression inner alloy bushing pipes, mark 3 expression inner alloy bushing pipes, the coat of paint or the plastic-blasting layer outside the outer seamless light pipe of mark 4 expressions among the figure.
Fig. 1 is the cross section structure schematic representation of double layer construction metal tube of the present utility model.As shown in Figure 1, the thickness of outer withstand voltage seamless steel pipe layer 1 has also represented among the figure that much larger than the thickness of inner alloy bushing pipe 2 roughness of internal layer bushing pipe internal surface 3 can reach Ra permission maximum value 0.8 μ m.
In employing double layer construction metal tube structure of the present utility model, making and adopting withstand voltage seamless steel pipe is that internal layer, skin and internal layer thickness proportion are 6: 1 metal tube for outer, brass bushing pipe, and the tubing that is particularly suitable as the medication chemistry industry uses.
Adopting double layer construction metal tube structure of the present utility model, making and adopting withstand voltage seamless steel pipe is that internal layer, skin and internal layer thickness proportion are 6: 1 metal tube for outer, monel bushing pipe, and the heat exchanger tubing that is particularly suitable as in the chiller plant uses.Particular application, withstand voltage seamless steel pipe skin is 3: 1 with the monel bushing pipe for the internal layer thickness proportion.
In employing double layer construction metal tube structure of the present utility model, making and adopting withstand voltage seamless steel pipe is that internal layer, skin and internal layer thickness proportion are 6: 1 metal tube for outer, tin bronze bushing pipe, and the tubing that is particularly suitable as in the pressure instrument industry uses.
Adopting double layer construction metal tube structure of the present utility model, making and adopting withstand voltage seamless steel pipe is that internal layer, skin and internal layer thickness proportion are 7: 1 metal tube for outer, stainless steel bushing pipe, and the tubing that is particularly suitable as civil building feedwater, drainage pipe or food processing industry or the various pipelines of petroleum chemical industry uses.
Adopting double layer construction metal tube structure of the present utility model, making and adopting withstand voltage seamless steel pipe is that internal layer, skin and internal layer thickness proportion are 5: 1 metal tube for outer, aluminum alloy bushing pipe, and the tubing that is particularly suitable as Aeronautics and Astronautics industrial fuel pipeline uses.
The double-deck skin of above-mentioned various material alloys bushing pipes, internal layer thickness proportion are the thickness proportion of the most normal application, in fact can bimetallic tube skin, the internal layer thickness proportion of various alloy material bushing pipes be adjusted arbitrarily in the scope at 7: 1 to 3: 1 according to the practical engineering application needs.
The processing mode of double layer construction metal tube of the present utility model is as follows: the metal pipe of selecting suitable aperture and thickness; to selected tubing pickling; phosphatization; outer pipe internal surface is carried out polishing processing and to internal layer bushing pipe reconfiguring; each mouthful of internal layer bushing pipe writing that surpasses all the others location rib; last production line machinery type string pipe; the double layer construction pipe is carried out the structure combination first time; the double layer construction pipe is carried out the structure combination second time; structure is carried out the processing that eliminates stress the first time in conjunction with back double layer construction pipe; the double layer construction pipe that eliminates stress for the first time after handling is carried out the processing that eliminates stress the second time; internal layer bushing pipe internal surface is carried out polishing processing and reaches with removing material method finished surface Ra allowing maximum value 0.8 μ m; cut boring mouth end; notch portion brush plating protective layer, product nondestructive inspection, japanning of external pipe outer surface or plastic-blasting.
Through the utility model double layer construction metal tube that above-mentioned processing mode processed, because double layer construction tubing adopts the NBS tubing of different size, according to the practical application needs, determine the thickness of external pipe and internal lining pipe, select the material of internal lining pipe, the outer tube of two kinds of materials and interior pipe are processed into the stationary fit state, and the compressive strength of whole body equals the compressive strength of two layers of material stack, makes body of the present utility model have intensity height, in light weight, long service life advantage; Because internal and external layer metallic material work in-process produces stationary fit through HIGH PRESSURE TREATMENT, the adhesive strength height two-layer can not separate, delamination, can stand temperature variation on a large scale, can also accept bending process, and interlayer is in conjunction with still keeping good; Because inner tube adopts unlike material according to the different application field, tolerates the corrosion of various liquid, gas; Because the inner alloy pipe internal surface is carried out polishing processing, make inner surface of tube body highly polished, help high pressure, at a high speed, big flow application occasion uses.
In selection, can select for use the common or Precision Seamless Steel Tubes that meets NBS as external pipe, GB GB/T19359 for example, GB/T3639, GB/T8262, the seamless steel pipe of GB/T17791 is as external pipe, select GB GB/T14975, GB/T3089, GB/T3090, the Stainless Steel Tube of GB/T14976 is as internal lining pipe, select GB GB/T1527, GB/T1528, GB/T1531, GB/T2882, GB/T18033, Cuprum alloy such as GB/T8890 or nickel alloy pipe are selected GB GB/T4436 as internal lining pipe, GB/T4437.1, the Al-alloy pipe of GB/T6893 is as internal lining pipe.One skilled in the art will appreciate that and can adopt corresponding other type steel pipe as external pipe according to application, the tubing that for example adopts GB GB/T3091, GB/T14980, GB/T3094 be as external pipe.
Above-mentioned embodiment is only for to describe the utility model, and those skilled in the art can carry out corresponding change in conjunction with concrete the application, and any modification based on the utility model all belongs to protection domain of the present utility model.
Claims (10)
1. double layer construction metal tube, the cross section is a circular shape, and skin is withstand voltage seamless steel pipe, and internal layer is the alloy bushing pipe, does not have the gap between the inside and outside layer Structural Hardware, it is characterized in that:
The thickness proportion scope of withstand voltage seamless steel pipe of described skin and inner alloy bushing pipe is 7: 1 to 3: 1.
2. double layer construction metal tube according to claim 1 is characterized in that: described inner alloy bushing pipe is the brass bushing pipe.
3. double layer construction metal tube according to claim 1 is characterized in that: described inner alloy bushing pipe is the monel bushing pipe.
4. double layer construction metal tube according to claim 1 is characterized in that: described inner alloy bushing pipe is the tin bronze bushing pipe.
5. double layer construction metal tube according to claim 1 is characterized in that: described inner alloy bushing pipe is the aluminum alloy bushing pipe.
6. double layer construction metal tube according to claim 1 is characterized in that: described inner alloy bushing pipe is the stainless steel bushing pipe.
7. double layer construction metal tube according to claim 6 is characterized in that: the ratio of withstand voltage seamless steel pipe of described skin and stainless steel lining tube thickness is 7: 1.
8. according to claim 2 or 3 or 4 described double layer construction metal tubes, it is characterized in that: the ratio of withstand voltage seamless steel pipe of described skin and brass bushing pipe or monel bushing pipe or tin bronze bushing pipe thickness is 6: 1.
9. double layer construction metal tube according to claim 5 is characterized in that: the ratio of withstand voltage seamless steel pipe of described skin and aluminum alloy bushing pipe thickness is 5: 1.
10. double layer construction metal tube according to claim 1 is characterized in that: inner alloy bushing pipe inside surface roughness is that Ra allows maximum value 0.8 μ m, and outer withstand voltage seamless steel pipe outer surface has the coat of paint or plastic-blasting layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520133485 CN2864279Y (en) | 2005-11-24 | 2005-11-24 | Two-level structure metal tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520133485 CN2864279Y (en) | 2005-11-24 | 2005-11-24 | Two-level structure metal tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2864279Y true CN2864279Y (en) | 2007-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520133485 Expired - Fee Related CN2864279Y (en) | 2005-11-24 | 2005-11-24 | Two-level structure metal tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2864279Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939678A (en) * | 2014-05-04 | 2014-07-23 | 南通盛德管业有限公司 | Composite stainless steel tube |
| CN105149554A (en) * | 2015-09-09 | 2015-12-16 | 安徽省凯峰塑料机械有限公司 | Process for processing seamless steel pipe for plastic machinery |
| CN110653375A (en) * | 2018-06-29 | 2020-01-07 | 中国科学院苏州纳米技术与纳米仿生研究所 | Layered composite material and preparation method and application thereof |
-
2005
- 2005-11-24 CN CN 200520133485 patent/CN2864279Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939678A (en) * | 2014-05-04 | 2014-07-23 | 南通盛德管业有限公司 | Composite stainless steel tube |
| CN105149554A (en) * | 2015-09-09 | 2015-12-16 | 安徽省凯峰塑料机械有限公司 | Process for processing seamless steel pipe for plastic machinery |
| CN110653375A (en) * | 2018-06-29 | 2020-01-07 | 中国科学院苏州纳米技术与纳米仿生研究所 | Layered composite material and preparation method and application thereof |
| CN110653375B (en) * | 2018-06-29 | 2022-04-01 | 中国科学院苏州纳米技术与纳米仿生研究所 | Layered composite material and preparation method and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070131 Termination date: 20101124 |