CN102661456A - Method for preparing polytetrafluoroethylene corrugated hose for returning oil by pressurizer - Google Patents
Method for preparing polytetrafluoroethylene corrugated hose for returning oil by pressurizer Download PDFInfo
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- CN102661456A CN102661456A CN2012101395659A CN201210139565A CN102661456A CN 102661456 A CN102661456 A CN 102661456A CN 2012101395659 A CN2012101395659 A CN 2012101395659A CN 201210139565 A CN201210139565 A CN 201210139565A CN 102661456 A CN102661456 A CN 102661456A
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- flexible hose
- corrugated flexible
- hose
- oil
- teflon
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Abstract
The invention discloses a method for preparing a polytetrafluoroethylene corrugated hose for returning oil by a pressurizer. The corrugated hose is made of a polytetrafluoroethylene pipe; and a stainless steel silk screen sleeve is arranged on the outer side of the corrugated hose. The method comprises the following steps of: heating, softening, performing corrugated molding, cooling and shaping, weaving the silk screen sleeve and the like. According to the method, the shortcoming of low high temperature oil resistance of the common oil transmission hose is overcome, and a using effect that the oil transmission hose can stably transmit oil for a long time at the high temperature of higher than 160 DEG C can be achieved; the shortcoming that a metal corrugated oil transmission hose is low in mechanical vibration performance is overcome; and effects that the oil transmission pipe is not deformed and damaged for a long time can be achieved under the conditions of high temperature environment of higher than 160 DEG C along with mechanical vibration, and the use performance of working stably for a long time is guaranteed.
Description
Technical field
The invention belongs to the tubing field, specifically is a kind of preparation method who is used for the teflon corrugated flexible hose of pressurized machine oil return.
Background technique
Along with the release of state's III, state's IV standard, each big automobile-used manufacturers of engines has also been made active response both at home and abroad.In order to reach the purpose of energy-saving and emission-reduction, MANUFACTURERs have done very big adjustment on the designing technique of motor, during engine operation, for improving the combustion value of fuel, effectively reduce toxic emission, have brought significantly lifting for the temperature of engine body.Common oil hose is rubber making such as employing oil resistant NBR, because its molecular bond of interior molecules reasons in structure is very active, can only be 135 ℃ of following hot environment midium or long term uses, and the oil resistant performance is not excellent.Adopt metal bellows under long-time strong vibration condition, show the ductility deficiency, the crack appears in body easily, causes fuel blow to causing fracture, the drawback that working life is short, a big bottleneck of formation restriction motor car engine industry development.
Summary of the invention
To above-mentioned shortcoming, the present invention adopts and gathers the shortcoming that PTFE has solved oil resistant; To gather the tubing that PTFE is processed through this preparation method; Secondary operations becomes corrugated flexible hose; Make hard tube become flexible pipe and increased flexibility; And add the metal wire knitted net in its appearance, and performances such as pipe fitting is withstand voltage, tension, anti-mechanical vibration are effectively strengthened to a great extent, it is anti-by the labor performance to efficiently solve oil hose oil resistant and anti-mechanical vibration.
A kind of teflon corrugated flexible hose that is used for the pressurized machine oil return is characterized in that said corrugated flexible hose processed by polytetrafluoroethyltubing tubing, and said corrugated flexible hose arranged outside has the Stainless Steel Wire net.
Described a kind of preparation method who is used for the teflon corrugated flexible hose of pressurized machine oil return is characterized in that comprising the steps:
1) heater power supply is put into heated chamber with teflon fixed length tubing and is heated;
2) open ripple forming and use vacuum pump, shaper is put into the heated chamber fixed length tubing of medium-softization, open vacuum valve mould is vacuumized;
3) fixed length tubing is taken out together with mould, put into water cooling back and take out mould;
4), put the Stainless Steel Wire net and the unnecessary net in tube head two ends is cut on the teflon corrugated flexible hose that makes surface.
Described preparation method is characterized in that the heating-up temperature in the step 1) is 275 ± 2 ℃, and preferred 275 ℃, be 5min heating time.
Described preparation method is characterized in that step 2) in the negative pressure that vacuumizes for≤-0.1～-0.12Mpa, the pumpdown time is 1min.
A kind of preparation method who is used for the teflon corrugated flexible hose of pressurized machine oil return of the present invention; Solved the drawback of common oil hose oil resistant poor performance; Realized oil hose in hot environment more than 160 ℃, the using effect of the oil transportation that also can maintain a long-term stability; Solved the drawback of the anti-mechanical vibration poor performance of wavy metal oil hose; Realized that oil hose is in hot environment more than 160 ℃ and be accompanied by under the state of mechanical vibration; Keep oil pipe indeformable for a long time, do not rupture, guarantee the stable usability of long-term work.
Description of drawings
Fig. 1 is a kind of schematic representation that is used for the teflon corrugated flexible hose of pressurized machine oil return of the present invention;
Fig. 2 is a kind of side sectional view that puts net that is used for the teflon corrugated flexible hose of pressurized machine oil return of the present invention;
Among the figure, 1-teflon corrugated flexible hose; 2-bellows segment; 3-Stainless Steel Wire net.
Embodiment
A kind of teflon corrugated flexible hose that is used for the pressurized machine oil return of the present invention, corrugated flexible hose is processed by polytetrafluoroethyltubing tubing, and the corrugated flexible hose arranged outside has the Stainless Steel Wire net.
This is used for the preparation method of the teflon corrugated flexible hose of pressurized machine oil return, and technology is following:
1. thermoplastic: first heater power supply, and to set heating-up temperature be 275 ± 2 ℃, and the fixed length polytetrafluoroethyltubing tubing is put into heated chamber, treat behind the 5min for use.
2. ripple forming: open ripple forming earlier and use vacuum pump, and setting and let its negative pressure≤-0.1～-0.12MPa, shaper is put into the heated chamber fixed length tubing of medium-softization, open vacuum valve mould begun to vacuumize 1min.
3. cooling and shaping: vacuumize the back and take out together with the band die workpiece, put into water cooling back and take out mould, the bellows moulding completes.
4. cover net:, put the Stainless Steel Wire net and the unnecessary net in tube head two ends cut and get final product at Manufactured teflon corrugated flexible hose outer surface.Back and forth do again from the beginning by this and to do next.
The performance test correlation data that is used for the teflon corrugated flexible hose of pressurized machine oil return of the present invention is seen table 1 and table 2.
Table 1 PTFE bellows and NBR pipe oil resistant temperature contrast test
Table 2 PTFE bellows and 304 corrugated stainless steel tubings distortion contrast test
Can find out that from table 1 and table 2 each item performance index such as tensile strength, elongation percentage, maximum operation (service) temperature and anti-vibration of the teflon corrugated flexible hose of method preparation of the present invention all obviously are superior to NBR pipe and metal bellows.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all is included within protection scope of the present invention.
Claims (4)
1. teflon corrugated flexible hose that is used for the pressurized machine oil return is characterized in that said corrugated flexible hose processed by polytetrafluoroethyltubing tubing, and said corrugated flexible hose arranged outside has the Stainless Steel Wire net.
2. a kind of preparation method who is used for the teflon corrugated flexible hose of pressurized machine oil return as claimed in claim 1 is characterized in that comprising the steps:
1) heater power supply is put into heated chamber with teflon fixed length tubing and is heated;
2) open ripple forming and use vacuum pump, shaper is put into the heated chamber fixed length tubing of medium-softization, open vacuum valve mould is vacuumized;
3) fixed length tubing is taken out together with mould, put into water cooling back and take out mould;
4), put the Stainless Steel Wire net and the unnecessary net in tube head two ends is cut on the teflon corrugated flexible hose that makes surface.
3. preparation method as claimed in claim 2 is characterized in that the heating-up temperature in the step 1) is 275 ± 2 ℃, and preferred 275 ℃, be 5min heating time.
4. preparation method as claimed in claim 2 is characterized in that step 2) in the negative pressure that vacuumizes for≤-0.1～-0.12Mpa, the pumpdown time is 1min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101395659A CN102661456A (en) | 2012-05-08 | 2012-05-08 | Method for preparing polytetrafluoroethylene corrugated hose for returning oil by pressurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101395659A CN102661456A (en) | 2012-05-08 | 2012-05-08 | Method for preparing polytetrafluoroethylene corrugated hose for returning oil by pressurizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102661456A true CN102661456A (en) | 2012-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101395659A Pending CN102661456A (en) | 2012-05-08 | 2012-05-08 | Method for preparing polytetrafluoroethylene corrugated hose for returning oil by pressurizer |
Country Status (1)
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| CN (1) | CN102661456A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823363A (en) * | 2016-05-31 | 2016-08-03 | 江苏金由新材料有限公司 | Vibration reducing pipe |
| CN108247993A (en) * | 2018-03-01 | 2018-07-06 | 肇庆市高新区董氏机械科技有限公司 | A kind of corrugated pipe forming device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2158482Y (en) * | 1993-04-25 | 1994-03-09 | 卢国良 | Expansion-compensation arrangement made of polytetrafluorethylene |
| CN2175340Y (en) * | 1993-11-10 | 1994-08-24 | 邵赵雄 | Polytetrafluorethylene screwed hose |
| CN2186839Y (en) * | 1994-03-12 | 1995-01-04 | 上海市塑料研究所 | Polytetrafluorethylene corrugated hose assembly |
| US20020197430A1 (en) * | 1999-10-25 | 2002-12-26 | Honda Giken Kogyo Kabushiki Kaisha | Process for producing resinous hose and resinous hose |
| CN101319740A (en) * | 2008-06-29 | 2008-12-10 | 程秀萍 | Bellows used for polytetrafluoroethylene compensator and manufacturing method thereof |
-
2012
- 2012-05-08 CN CN2012101395659A patent/CN102661456A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2158482Y (en) * | 1993-04-25 | 1994-03-09 | 卢国良 | Expansion-compensation arrangement made of polytetrafluorethylene |
| CN2175340Y (en) * | 1993-11-10 | 1994-08-24 | 邵赵雄 | Polytetrafluorethylene screwed hose |
| CN2186839Y (en) * | 1994-03-12 | 1995-01-04 | 上海市塑料研究所 | Polytetrafluorethylene corrugated hose assembly |
| US20020197430A1 (en) * | 1999-10-25 | 2002-12-26 | Honda Giken Kogyo Kabushiki Kaisha | Process for producing resinous hose and resinous hose |
| CN101319740A (en) * | 2008-06-29 | 2008-12-10 | 程秀萍 | Bellows used for polytetrafluoroethylene compensator and manufacturing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823363A (en) * | 2016-05-31 | 2016-08-03 | 江苏金由新材料有限公司 | Vibration reducing pipe |
| CN108247993A (en) * | 2018-03-01 | 2018-07-06 | 肇庆市高新区董氏机械科技有限公司 | A kind of corrugated pipe forming device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120912 |