CN101776188B - Polytetrafluoroethylene tube with blind head and manufacturing method thereof - Google Patents
Polytetrafluoroethylene tube with blind head and manufacturing method thereof Download PDFInfo
- Publication number
- CN101776188B CN101776188B CN2010101084398A CN201010108439A CN101776188B CN 101776188 B CN101776188 B CN 101776188B CN 2010101084398 A CN2010101084398 A CN 2010101084398A CN 201010108439 A CN201010108439 A CN 201010108439A CN 101776188 B CN101776188 B CN 101776188B
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- China
- Prior art keywords
- polyfluortetraethylene pipe
- steel bar
- blind head
- weld mold
- polytetrafluoroethylsteel steel
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- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention relates to a polytetrafluoroethylene tube with a blind head and a manufacturing method thereof. The polytetrafluoroethylene tube is provided with a polytetrafluoroethylene bar material in one end of a general polytetrafluoroethylene tube and forms the blind head by closing one end of the polytetrafluoroethylene tube by utilizing the polytetrafluoroethylene bar material. The polytetrafluoroethylene tube with the blind head is manufactured by bonding the surface of the polytetrafluoroethylene bar material inserted into the one end of the polytetrafluoroethylene tube with the inner wall of one end of the polytetrafluoroethylene tube after melted by adopting a heating method, not only has the advantages of corrosion resistance of polytetrafluoroethylene, excellent high and low temperature resistance, chemical stability, and the like, but also can be used for wrapping the special places of parts, i.e. instruments, meters and probes arranged on mechanical equipment, and the like, thereby having wide application range; and besides, the manufacturing method has the advantages that the operation process is simple and convenient, the structure of the used equipment has no special requirements, and the like.
Description
Technical field
The present invention relates to a kind of tubing and process technology thereof, particularly relate to a kind of polyfluortetraethylene pipe and manufacturing approach thereof that has blind head.
Background technology
Because polytetrafluoroethylene (PTFE) is a kind ofly to have excellent high and low temperature resistance and chemical stability, proof voltage, non-adhesive, weatherability, have the fluoroplastics resin of compatibility and good self lubricity, the therefore acquisition extensive use in fields such as chemical industry, oil, weaving, medical treatment and machineries with human body.
In addition; Before dispatching from the factory, all need utilize anti-corrosion material to pack such as the parts such as probe on instrument, instrument industry and the Medical Devices; Best manner of packing is to adopt the polyfluortetraethylene pipe that has blind head; Human body does not repel though polytetrafluoroethylene (PTFE) has, corrosion-resistant, characteristics such as greasy property is good; But receive the restriction of polytetrafluoroethylmaterial material processing characteristics and can't disposablely produce the polyfluortetraethylene pipe that has blind head, therefore can not above-mentioned these special parts be coated, so the scope of application is little.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of polyfluortetraethylene pipe that has blind head applied widely.
Another object of the present invention is to provide a kind of above-mentioned manufacturing approach that has the polyfluortetraethylene pipe of blind head.
In order to achieve the above object; The polyfluortetraethylene pipe that has blind head provided by the invention is one section polytetrafluoroethylsteel steel bar to be installed in that an end of common polyfluortetraethylene pipe is inner, utilizes polytetrafluoroethylsteel steel bar that one end of polyfluortetraethylene pipe is closed and forms blind head.
The manufacturing approach that has the polyfluortetraethylene pipe of blind head provided by the invention comprises the following step that carries out in order:
1) polyfluortetraethylene pipe of intercepting Len req and diameter and polytetrafluoroethylsteel steel bar, wherein the diameter of polytetrafluoroethylsteel steel bar is greater than the internal diameter 0.08-0.8mm of polyfluortetraethylene pipe;
2) it is inner above-mentioned polytetrafluoroethylsteel steel bar firmly to be inserted into an end of polyfluortetraethylene pipe, and is alignd with the corresponding outer end of pipe in the outer end of bar;
Polyfluortetraethylene pipe one end that 3) will be inserted with polytetrafluoroethylsteel steel bar is put into weld mold;
4) above-mentioned weld mold is heated to 360 ℃-390 ℃ temperature; Constant temperature was handled 2-6 hour under this temperature then; So that an end inwall of the surface of polytetrafluoroethylsteel steel bar and polyfluortetraethylene pipe is welded together, stops heating afterwards and make weld mold reduce to room temperature;
The polyfluortetraethylene pipe that 5) will be inserted with polytetrafluoroethylsteel steel bar takes out the polyfluortetraethylene pipe that can obtain having blind head from weld mold.
The rate of heat addition of weld mold is 10 ℃ of-80 ℃/h in the described step 4).
The rate of temperature fall of weld mold is 10 ℃ of-80 ℃/h in the described step 4).
The aperture of weld mold is greater than the external diameter 0.01-0.2mm of polyfluortetraethylene pipe in the described step 3).
The polyfluortetraethylene pipe that has blind head provided by the invention is to bond together after utilizing the method for heating that an end inwall that is inserted in inner polytetrafluoroethylsteel steel bar surface of polyfluortetraethylene pipe one end and polyfluortetraethylene pipe is melted and process; It not only has the advantage such as corrosion-resistant, excellent high and low temperature resistance and chemical stability of polytetrafluoroethylene (PTFE); But also can be used to coat the special occasions of the parts such as probe on instrument, instrument industry and the Medical Devices, therefore applied widely.This manufacturing approach has that operating process is simple and convenient, the device therefor structure does not have advantages such as specific (special) requirements in addition.
Description of drawings
Fig. 1 is the polyfluortetraethylene pipe vertical structure cutaway view that has blind head provided by the invention.
Fig. 2 utilizes the weld mold heating to be inserted with the polyfluortetraethylene pipe process sketch map of polytetrafluoroethylsteel steel bar when having blind polytetrafluoroethylene (PTFE) manufacturing approach for employing is provided by the invention.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment polyfluortetraethylene pipe and the manufacturing approach thereof that has blind head provided by the invention is elaborated.
Embodiment 1:
Like Fig. 1-shown in Figure 2, the manufacturing approach of the polyfluortetraethylene pipe that has blind head that present embodiment provides comprises the following step that carries out in order:
1) polyfluortetraethylene pipe 1 of intercepting ￠ 18 * ￠ 14 * 3000mm and ￠ 14
+ 0.2The polytetrafluoroethylsteel steel bar 2 of * 10mm;
2) it is inner above-mentioned polytetrafluoroethylsteel steel bar 2 firmly to be inserted into an end of polyfluortetraethylene pipe 1, and is alignd with the corresponding outer end of managing 1 in the outer end of bar 2;
4) above-mentioned weld mold 3 is heated to 372 ℃ temperature with the rate of heat addition of 80 ℃/h; Constant temperature was handled 4 hours under this temperature then; So that an end inwall of the surface of polytetrafluoroethylsteel steel bar 2 and polyfluortetraethylene pipe 1 is welded together, stops heating afterwards and make weld mold 3 reduce to room temperature with the rate of temperature fall of 80 ℃/h;
The polyfluortetraethylene pipe 1 that 5) will be inserted with polytetrafluoroethylsteel steel bar 2 takes out the polyfluortetraethylene pipe 4 that can obtain having blind head from weld mold 3.
Embodiment 2:
Like Fig. 1-shown in Figure 2, the manufacturing approach of the polyfluortetraethylene pipe that has blind head that present embodiment provides comprises the following step that carries out in order:
1) polyfluortetraethylene pipe 1 of intercepting ￠ 30 * ￠ 25 * 250mm and ￠ 25
+ 0.08The polytetrafluoroethylsteel steel bar 2 of * 10mm;
2) it is inner above-mentioned polytetrafluoroethylsteel steel bar 2 firmly to be inserted into an end of polyfluortetraethylene pipe 1, and is alignd with the corresponding outer end of managing 1 in the outer end of bar 2;
4) above-mentioned weld mold 3 is heated to 372 ℃ temperature with the rate of heat addition of 60 ℃/h; Constant temperature was handled 6 hours under this temperature then; So that an end inwall of the surface of polytetrafluoroethylsteel steel bar 2 and polyfluortetraethylene pipe 1 is welded together, stops heating afterwards and make weld mold 3 reduce to room temperature with 60 ℃/h rate of temperature fall;
The polyfluortetraethylene pipe 1 that 5) will be inserted with polytetrafluoroethylsteel steel bar 2 takes out the polyfluortetraethylene pipe 4 that can obtain having blind head from weld mold 3.
Embodiment 3:
Like Fig. 1-shown in Figure 2, the manufacturing approach of the polyfluortetraethylene pipe that has blind head that present embodiment provides comprises the following step that carries out in order:
1) polyfluortetraethylene pipe 1 of intercepting ￠ 12 * ￠ 10 * 3000mm and ￠ 14
+ 0.4The polytetrafluoroethylsteel steel bar 2 of * 10mm;
2) it is inner above-mentioned polytetrafluoroethylsteel steel bar 2 firmly to be inserted into an end of polyfluortetraethylene pipe 1, and is alignd with the corresponding outer end of managing 1 in the outer end of bar 2;
4) above-mentioned weld mold 3 is heated to 372 ℃ temperature with the rate of heat addition of 80 ℃/h; Constant temperature was handled 4 hours under this temperature then; So that an end inwall of the surface of polytetrafluoroethylsteel steel bar 2 and polyfluortetraethylene pipe 1 is welded together, stops heating afterwards and make weld mold 3 reduce to room temperature with 80 ℃/h rate of temperature fall;
The polyfluortetraethylene pipe 1 that 5) will be inserted with polytetrafluoroethylsteel steel bar 2 takes out the polyfluortetraethylene pipe 4 that can obtain having blind head from weld mold 3.
Claims (4)
1. manufacturing approach that has the polyfluortetraethylene pipe of blind head, it is characterized in that: described manufacturing approach comprises the following step that carries out in order:
1) polyfluortetraethylene pipe of intercepting Len req and diameter (1) and polytetrafluoroethylsteel steel bar (2), wherein (2) diameter of polytetrafluoroethylsteel steel bar is greater than the internal diameter 0.08-0.8mm of polyfluortetraethylene pipe (1);
2) it is inner above-mentioned polytetrafluoroethylsteel steel bar (2) firmly to be inserted into an end of polyfluortetraethylene pipe (1), and is alignd with the corresponding outer end of pipe (1) in the outer end of bar (2);
Polyfluortetraethylene pipe (1) one end that 3) will be inserted with polytetrafluoroethylsteel steel bar (2) is put into weld mold (3);
4) above-mentioned weld mold (3) is heated to 360 ℃-390 ℃ temperature; Constant temperature was handled 2-6 hour under this temperature then; So that an end inwall of the surface of polytetrafluoroethylsteel steel bar (2) and polyfluortetraethylene pipe (1) is welded together, stops heating afterwards and make weld mold (3) reduce to room temperature;
Polyfluortetraethylene pipe (1) taking-up from weld mold (3) that 5) will be inserted with polytetrafluoroethylsteel steel bar (2) can obtain having the polyfluortetraethylene pipe (4) of blind head; Described is to have the polyfluortetraethylene pipe (4) of blind head at the inner one section polytetrafluoroethylsteel steel bar (2) of installing of an end of common polyfluortetraethylene pipe (1), utilizes polytetrafluoroethylsteel steel bar (2) that an end of polyfluortetraethylene pipe (1) is closed and forms blind head.
2. the manufacturing approach that has the polyfluortetraethylene pipe of blind head according to claim 1, it is characterized in that: the rate of heat addition of weld mold in the described step 4) (3) is 10 ℃ of-80 ℃/h.
3. the manufacturing approach that has the polyfluortetraethylene pipe of blind head according to claim 1, it is characterized in that: the rate of temperature fall of weld mold in the described step 4) (3) is 10 ℃ of-80 ℃/h.
4. the manufacturing approach that has the polyfluortetraethylene pipe of blind head according to claim 1, it is characterized in that: the aperture of weld mold in the described step 3) (3) is greater than the external diameter 0.01-0.2mm of polyfluortetraethylene pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101084398A CN101776188B (en) | 2010-02-10 | 2010-02-10 | Polytetrafluoroethylene tube with blind head and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101084398A CN101776188B (en) | 2010-02-10 | 2010-02-10 | Polytetrafluoroethylene tube with blind head and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101776188A CN101776188A (en) | 2010-07-14 |
| CN101776188B true CN101776188B (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101084398A Expired - Fee Related CN101776188B (en) | 2010-02-10 | 2010-02-10 | Polytetrafluoroethylene tube with blind head and manufacturing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN101776188B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775752A (en) * | 2014-02-25 | 2014-05-07 | 韩玉新 | Polytetrafluoroethylene tube and lining manufacturing process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2963394A (en) * | 1956-10-19 | 1960-12-06 | Crane Packing Ltd | Joining of elements composed of plastic materials |
| CN101074941A (en) * | 2007-06-21 | 2007-11-21 | 中国科学院长春应用化学研究所 | Method for producing carbon magma bismuth membrane electrode |
-
2010
- 2010-02-10 CN CN2010101084398A patent/CN101776188B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2963394A (en) * | 1956-10-19 | 1960-12-06 | Crane Packing Ltd | Joining of elements composed of plastic materials |
| CN101074941A (en) * | 2007-06-21 | 2007-11-21 | 中国科学院长春应用化学研究所 | Method for producing carbon magma bismuth membrane electrode |
Non-Patent Citations (1)
| Title |
|---|
| 徐下忠.聚四氟乙烯主要成型制品及生产工艺.《塑料科技》.2005,(第2005年第1期), * |
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|---|---|
| CN101776188A (en) | 2010-07-14 |
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