CN204004851U - A kind of carbon steel rustless steel double-metal polymerization pipe - Google Patents
A kind of carbon steel rustless steel double-metal polymerization pipe Download PDFInfo
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- CN204004851U CN204004851U CN201420429609.6U CN201420429609U CN204004851U CN 204004851 U CN204004851 U CN 204004851U CN 201420429609 U CN201420429609 U CN 201420429609U CN 204004851 U CN204004851 U CN 204004851U
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Abstract
The utility model discloses a kind of carbon steel rustless steel double-metal polymerization pipe, comprise outer tube and inner tube, described inner tube is socketed in described outer tube, and the gap between described outer tube and inner tube is 1-4mm; The internal surface of described inner tube is provided with lubricating layer, and the outer surface of described inner tube is wound with wire, and the outer surface of described inner tube is provided with polymeric layer.The utility model arranges lubricating layer by the internal surface of the inner tube of bimetal steel pipe (carbon steel stainless steel polymerization pipe), the outer surface of inner tube is arranged to wire to be wound around, after wire is wound around, apply again one layer of polymeric layer, effectively increased the cohesive force of inner and outer pipes, the bad problem of thermal conductivity that general bimetal tube exists can be effectively solved, the heat exchanger steel pipe field of three change industries can be widely used in.
Description
Technical field
The utility model relates to type of the present invention and relates to Clad Steel Manifold technology field, relates to a kind of bimetal steel pipe (carbon steel stainless steel polymerization pipe).
Background technique
In existing bimetal tube manufacturing technology, domestic and international common technique has spinning method, traditional hubbing, hydrostatic platen press and explosive forming method.
Wherein spinning method is by place a spinning mold in inner tube, then, by mechanical transmission mechanism, orders about spinning mold by inner tube metal generation plastic deformation, is fitted in the internal surface of outer tube.
Tradition hubbing be in the inner tube of bimetal tube, place a taper mould, taper die microcephaly, partly connect mechanical drawing mechanism simultaneously, by mould taper die major part part enlarging effect, make inner tube metal generation plastic deformation, be fitted in the internal surface of outer tube.
Hydrostatic pressing rule is to use hydraulic principle, by the closed at both ends of inner tube, then, by squeezing into industrial water toward inner tube, makes inner tube metal generation plastic deformation, is fitted in the internal surface of outer tube.
Explosive forming method is to use fire-working article to assemble, and the fire-working article that reserves appropriate length in base tube initiation ends connects detonator.And to the base assembling, bushing pipe at pipe end fitting tight cover, and detonate after bleeding with vacuum pump between base, bushing pipe, make inner and outer pipes moment high temperature and powerful explosive power effect under form compound.
But these four kinds of shortcomings that technique all exists some to overcome, such as: spinning method, traditional hubbing, hydrostatic platen press exist inner and outer pipes combination force not enough, and under hot operation condition, the phenomenon that inner and outer pipes comes off easily occur.And explosive forming method, owing to being moment modification, exists the inhomogeneous phenomenon of combination force at each position, this easily causes the thermal conductivity of steel pipe inhomogeneous, can not be applied to the occasion of heat exchange purposes.
In addition, due to the heat exchanger application field in three changes, the thermal conductivity of Stainless Steel Tube is the index of most critical for this purposes, simultaneously because pipeline also needs to carry out bending and distortion in course of working.And general bimetal tube technique, owing to there being gap between double layer of metal, heat there will be the problem of partition here in transmittance process, and whole heat-conducting property cannot guarantee; Simultaneously double layer of metal, due to after plastic deformation, produces the concentrated phenomenon of stress, if therefore these bimetal tubes are done to brake forming processing, the phenomenon of steel pipe cracking may occur, and actually cannot carry out assembled in situ.
Model utility content
The technical problems to be solved in the utility model is, provide a kind of heat conduction evenly, bimetal tube not easy to crack.
The technical solution of the utility model is, a kind of carbon steel rustless steel double-metal polymerization pipe, comprises outer tube and inner tube, and described inner tube is socketed in described outer tube, and the gap between described outer tube and inner tube is 1-4mm; The internal surface of described inner tube is provided with lubricating layer, and the outer surface of described inner tube is wound with wire, and the outer surface of described inner tube is provided with polymeric layer.Polymeric layer covers outside inner tube outer surface and wire.
Wherein, the horizontal uniform pitch of described wire is wound around.
Further, described wire is longitudinally wrapped in the upper and lower end of inner tube, and the number that described wire is longitudinally wound around is 2-6 root.
Wherein, laterally the pitch of wire is 30-60mm.
Further, described pitch is 45-55mm.
Wherein, the diameter of described wire is 0.2-0.7mm.
In carbon steel rustless steel double-metal polymerization pipe of the present utility model, described lubricating layer thickness is 0.02-0.06mm.
Wherein, the thickness of described polymeric layer is less than 0.005mm.
Wherein, described outer tube is carbon steel tube, and described inner tube is Stainless Steel Tube.
The beneficial effects of the utility model are:
The utility model arranges lubricating layer by the internal surface of the inner tube of bimetal steel pipe (carbon steel stainless steel polymerization pipe), the outer surface of inner tube is arranged to wire to be wound around, the wire being wound around can laterally be wound around, also can be in length and breadth to winding, simultaneously after wire is wound around, then apply one layer of polymeric layer, effectively increased the cohesive force of inner and outer pipes, the bad problem of thermal conductivity that general bimetal tube exists can be effectively solved, the heat exchanger steel pipe field of three change industries can be widely used in.
In the solidification process of polymer, discharged the stress that stainless steel metal produces in plastic deformation, solved the difficult problems such as the bending of common double metal tube in heat exchanger course of working and enlarging.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model bimetal tube.
Fig. 2 is sectional view of the present utility model.
In figure, 1-inner tube, 2-outer tube, 3-wire, 4-polymeric layer, 5-lubricating layer.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is described in further detail.
As shown in Figure 1, a kind of carbon steel rustless steel double-metal polymerization pipe, comprises outer tube 2 and inner tube 1, and inner tube 1 is socketed in outer tube 2, and the gap that outer tube 2 and inner tube are 1 is 1-4mm; The internal surface of described inner tube 1 is provided with lubricating layer 5, and the outer surface of inner tube 1 is wound with wire 3, and the outer surface of inner tube is provided with polymeric layer 3.
(1) prepare bimetal steel pipe (carbon steel stainless steel polymerization pipe) inner and outer pipes raw material
The outer tube of bimetal steel pipe (carbon steel stainless steel polymerization pipe) adopts the Precision Seamless Steel Tubes of the E235 material that meets EN10305-1 standard-required, and specification is external diameter 35mm* wall thickness 1.6mm; Inner tube adopts the Stainless Steel Tube of 316 materials that meet ASTM A269 standard, and specification is external diameter 28mm* wall thickness 1.05mm.Inner and outer pipes is aligned simultaneously, guaranteed that the requirement of inner and outer pipes straightness accuracy guarantees to be not more than 1.5mm/m.
(2) outer tube is carried out to sour phospholeum
(3) at the internal surface of inner tube, smear lubricating layer
Inwall at steel pipe is smeared lubricating layer, and noting smearing must be even, and dries under lower than 100 degrees Celsius.
(4) outer surface in inner tube is wound around wire
At inner tube (external diameter 28mm* wall thickness 1.05mm) outer surface, by external diameter, be that 0.2-0.7mm wire is moved other one end to from one end along the longitudinal, draw altogether 4 wires, notice that the necessary interval of these four wires is even.Then, from one end of steel pipe, transversely wire is wound around until the other end of steel pipe uniformly according to the pitch of 30-60mm.
(5) at the outer surface of inner tube, smear polymer
At inner tube (external diameter 28mm* wall thickness 1.05mm) outer surface, with the lousiness brush below 0.1mm external diameter, the polymer that is adjusted to pasty state is applied to uniformly to the outer surface of inner tube, THICKNESS CONTROL is being no more than 0.005mm.
(6) inner and outer pipes carries out sleeve pipe
After the inner tube dry tack free of polymer to be applied, by outer tube horizontal positioned, parallel the pushing away of inner tube is put in outer pipe orifice simultaneously.While noticing that if encountering inner and outer pipes wall friction cannot advance, the sleeve pipe by force of should not exerting oneself.
(7) sleeve pipe is carried out to drop-head processing
One end of the inner and outer pipes being nested together is put into and in shrinking machine, carried out drop-head operation.Attention must also want drop-head to enter inner tube in this operation.
(8) drawing processing
According to the drawing machine of the size Selection 20T of steel pipe, according to normal seamless cold drawing steel tube technique, carry out drawing.
(9) bimetal steel pipe (carbon steel stainless steel polymerization pipe) crop end scale
According to client's demand, the bimetal steel pipe of drawing moulding (external diameter 25mm* wall thickness 2.5mm) is cut surely, guaranteed that length variation is in-0/+3mm.
Middle cleaning, aligning, flaw detection, semi-finished product clean, steep aqueous rust preventive and drain, pack to put in storage and wait to send out successively afterwards.
The utility model arranges lubricating layer by the internal surface of the inner tube of bimetal steel pipe (carbon steel stainless steel polymerization pipe), the outer surface of inner tube is arranged to wire to be wound around, after wire is wound around, apply again one layer of polymeric layer, effectively increased the cohesive force of inner and outer pipes, the bad problem of thermal conductivity that general bimetal tube exists can be effectively solved, the heat exchanger steel pipe field of three change industries can be widely used in.
Claims (9)
1. a carbon steel rustless steel double-metal polymerization pipe, comprises outer tube and inner tube, it is characterized in that: described inner tube is socketed in described outer tube, and the gap between described outer tube and inner tube is 1-4mm; The internal surface of described inner tube is provided with lubricating layer, and the outer surface of described inner tube is wound with wire, and the outer surface of described inner tube is provided with polymeric layer.
2. carbon steel rustless steel double-metal polymerization pipe according to claim 1, is characterized in that, the horizontal uniform pitch of described wire is wound around.
3. carbon steel rustless steel double-metal polymerization pipe according to claim 2, is characterized in that, described wire is longitudinally wrapped in the upper and lower end of inner tube, and the number that described wire is longitudinally wound around is 2-6 root.
4. carbon steel rustless steel double-metal polymerization pipe according to claim 2, is characterized in that, described pitch is 30-60mm.
5. carbon steel rustless steel double-metal polymerization pipe according to claim 4, is characterized in that, described pitch is 45-55mm.
6. carbon steel rustless steel double-metal polymerization pipe according to claim 1, is characterized in that, the diameter of described wire is 0.2-0.7mm.
7. carbon steel rustless steel double-metal polymerization pipe according to claim 1, is characterized in that, described lubricating layer thickness is 0.02-0.06mm.
8. carbon steel rustless steel double-metal polymerization pipe according to claim 1, is characterized in that, the thickness of described polymeric layer is less than 0.005mm.
9. carbon steel rustless steel double-metal polymerization pipe according to claim 1, is characterized in that, described outer tube is carbon steel tube, and described inner tube is Stainless Steel Tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429609.6U CN204004851U (en) | 2014-07-31 | 2014-07-31 | A kind of carbon steel rustless steel double-metal polymerization pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429609.6U CN204004851U (en) | 2014-07-31 | 2014-07-31 | A kind of carbon steel rustless steel double-metal polymerization pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204004851U true CN204004851U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420429609.6U Expired - Fee Related CN204004851U (en) | 2014-07-31 | 2014-07-31 | A kind of carbon steel rustless steel double-metal polymerization pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204004851U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537316A (en) * | 2016-01-15 | 2016-05-04 | 上海天阳钢管有限公司 | Manufacturing method for stainless steel composite tube |
-
2014
- 2014-07-31 CN CN201420429609.6U patent/CN204004851U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537316A (en) * | 2016-01-15 | 2016-05-04 | 上海天阳钢管有限公司 | Manufacturing method for stainless steel composite tube |
| CN105537316B (en) * | 2016-01-15 | 2018-06-05 | 上海天阳钢管有限公司 | A kind of manufacturing method of stainless steel composite pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160731 |