CN106564204A - Machining method for PTFE anti-fatigue membrane for butterfly valve - Google Patents
Machining method for PTFE anti-fatigue membrane for butterfly valve Download PDFInfo
- Publication number
- CN106564204A CN106564204A CN201610789289.9A CN201610789289A CN106564204A CN 106564204 A CN106564204 A CN 106564204A CN 201610789289 A CN201610789289 A CN 201610789289A CN 106564204 A CN106564204 A CN 106564204A
- Authority
- CN
- China
- Prior art keywords
- ptfe
- die
- butterfly valve
- processing method
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention belongs to the technical field of butterfly valves, and particularly relates to a machining method for a PTFE anti-fatigue membrane for a butterfly valve. The method comprises the steps that A, PTFE powder is arranged in a die, the die is gradually subjected to exhausting, and the PTFE powder is pressed in the die into a green body; B, the PTFE green body is sintered in an oven with the temperature being 380 DEG C for 5-24 h, and then cooling is conducted to the room temperature; C, the cooled PTFE green body is turned in a turning machine into a film with the thickness ranging from 0.3 mm to 3.0 mm; and D, the PTFE film is subjected to the die cutting procedure to become a circular product, and a circular ring is formed through heat setting on a die pressing machine. Compared with the prior art, the machining method for the regenerated PTFE width film has the beneficial effects that firstly, manufacturing is simple, and cost is low; and secondly, production of multiple specifications can be conducted, and the manufacturing range is wide.
Description
Technical field
The invention belongs to butterfly valve technical field, more particularly to a kind of butterfly valve processing method of PTFE resisting fatigue diaphragms.
Background technology
Butterfly valve is called flap valve, is a kind of regulating valve of simple structure, can be used for the on-off control of low pressure pipeline medium
Butterfly valve refers to that closure member (flap or butterfly plate) is disk, and a kind of valve of open and close is reached around valve shaft rotation, and valve can
For controlling all kinds such as empty gas and water, steam, various Korrosionsmediums, mud, oil product, liquid metal and radiating medium
The flowing of fluid.Cut-out and throttling action are acted primarily as on pipeline.Butterfly valve opening and closing element is a discoidal butterfly plate, in valve body
Rotate around the axis of its own, so as to reach the purpose for opening and closing or adjusting.The resisting fatigue diaphragm manufacture of existing butterfly valve is relatively complicated,
Manufacturing cost is higher.
The content of the invention
The purpose of the present invention is for the problems referred to above, there is provided one kind is simple to manufacture, lower-cost butterfly valve PTFE resist it is tired
The processing method of labor diaphragm.
To reach above-mentioned purpose, following technical proposal is present invention employs：The processing of PTFE resisting fatigue diaphragms of this butterfly valve
Method, it is characterised in that comprise the steps：
A.PTFE powders are fitted in mould, and progressively PTFE powders are pressed in a mold raw embryo to mould by aerofluxuss；
B.PTFE raw embryos are cooled to room temperature after sintering 5～24 hours in 380 DEG C of baking ovens；
C., PTFE embryos after cooling are lathed the thin film of 0.3～3.0mm in turning machine；
D. PTFE thin film is become into circular article by die cutting procedure, and thermal finalization forms annulus on moulding press.
In the processing method of above-mentioned regenerated polytetrafluoroethylproducts wide-range film, in described step C, PTFE embryos are in turning
The thin film of 0.5～2.0mm is lathed in machine.
In the processing method of above-mentioned regenerated polytetrafluoroethylproducts wide-range film, temperature during thermal finalization shape is at 50-100 DEG C
Between.
Compared with prior art, the advantage of the processing method of this regenerated polytetrafluoroethylproducts wide-range film is：1st, manufacture
Simply, cost is relatively low.2nd, the production of many specifications can be carried out, manufacture scope is wide.
Specific embodiment
With reference to specific embodiment, the present invention will be further described in detail.
The butterfly valve processing method of PTFE resisting fatigue diaphragms, comprises the steps：
A.PTFE powders are fitted in mould, and progressively PTFE powders are pressed in a mold raw embryo to mould by aerofluxuss；
B.PTFE raw embryos are cooled to room temperature after sintering 5～24 hours in 380 DEG C of baking ovens；
C., PTFE embryos after cooling are lathed the thin film of 0.3～3.0mm in turning machine；
D. PTFE thin film is become into circular article by die cutting procedure, and thermal finalization forms annulus on moulding press.
Used as preferred, PTFE embryos are lathed the thin film of 0.5～2.0mm in turning machine.
Used as preferred, temperature during thermal finalization shape is between 50-100 DEG C.
Specific embodiment described herein is only explanation for example spiritual to the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications to described specific embodiment or supplement or replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (3)
1. a kind of butterfly valve processing method of PTFE resisting fatigue diaphragms, it is characterised in that comprise the steps：
A.PTFE powders are fitted in mould, and progressively PTFE powders are pressed in a mold raw embryo to mould by aerofluxuss；
B.PTFE raw embryos are cooled to room temperature after sintering 5～24 hours in 380 DEG C of baking ovens；
C., PTFE embryos after cooling are lathed the thin film of 0.3～3.0mm in turning machine；
D. PTFE thin film is become into circular article by die cutting procedure, and thermal finalization forms annulus on moulding press.
2. the processing method of regenerated polytetrafluoroethylproducts wide-range film according to claim 1, it is characterised in that described step
In rapid C, PTFE embryos are lathed the thin film of 0.5～2.0mm in turning machine.
3. the processing method of regenerated polytetrafluoroethylproducts wide-range film according to claim 1, it is characterised in that described step
In rapid D, temperature during thermal finalization shape is between 50-100 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610789289.9A CN106564204A (en) | 2016-08-31 | 2016-08-31 | Machining method for PTFE anti-fatigue membrane for butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610789289.9A CN106564204A (en) | 2016-08-31 | 2016-08-31 | Machining method for PTFE anti-fatigue membrane for butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106564204A true CN106564204A (en) | 2017-04-19 |
Family
ID=58532484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610789289.9A Pending CN106564204A (en) | 2016-08-31 | 2016-08-31 | Machining method for PTFE anti-fatigue membrane for butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106564204A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19753131A1 (en) * | 1997-11-29 | 1999-06-02 | Parker Hannifin Gmbh | Successive sinter-pressing of composite cylindrical blank |
| WO2008069196A1 (en) * | 2006-12-04 | 2008-06-12 | Daikin Industries, Ltd. | Polytetrafluoroethylene molded body and method for producing the same |
| CN102022547A (en) * | 2010-12-17 | 2011-04-20 | 哈尔滨东安实业发展有限公司 | Preparation method of polytetrafluoroethylene double-sealing-lip sealing ring device |
| CN102276950A (en) * | 2011-05-18 | 2011-12-14 | 湖州松华橡塑有限公司 | Polytetrafluoroethylene (PTFE) composite material sealing ring with high temperature resistance and low creep, and preparation method thereof |
| CN102627820A (en) * | 2011-08-18 | 2012-08-08 | 天津市天塑科技集团有限公司技术中心 | Modified teflon material for dynamic/static seal |
| CN102627821A (en) * | 2011-12-02 | 2012-08-08 | 兰州理工大学 | Filled modified teflon seal material and its preparation method |
| CN104015372A (en) * | 2014-01-09 | 2014-09-03 | 宁波氟纳斯氟材科技有限公司 | Production process and device of expanded polytetrafluoroethylene board |
-
2016
- 2016-08-31 CN CN201610789289.9A patent/CN106564204A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19753131A1 (en) * | 1997-11-29 | 1999-06-02 | Parker Hannifin Gmbh | Successive sinter-pressing of composite cylindrical blank |
| WO2008069196A1 (en) * | 2006-12-04 | 2008-06-12 | Daikin Industries, Ltd. | Polytetrafluoroethylene molded body and method for producing the same |
| CN102022547A (en) * | 2010-12-17 | 2011-04-20 | 哈尔滨东安实业发展有限公司 | Preparation method of polytetrafluoroethylene double-sealing-lip sealing ring device |
| CN102276950A (en) * | 2011-05-18 | 2011-12-14 | 湖州松华橡塑有限公司 | Polytetrafluoroethylene (PTFE) composite material sealing ring with high temperature resistance and low creep, and preparation method thereof |
| CN102627820A (en) * | 2011-08-18 | 2012-08-08 | 天津市天塑科技集团有限公司技术中心 | Modified teflon material for dynamic/static seal |
| CN102627821A (en) * | 2011-12-02 | 2012-08-08 | 兰州理工大学 | Filled modified teflon seal material and its preparation method |
| CN104015372A (en) * | 2014-01-09 | 2014-09-03 | 宁波氟纳斯氟材科技有限公司 | Production process and device of expanded polytetrafluoroethylene board |
Non-Patent Citations (2)
| Title |
|---|
| 陆培文 等: "《阀门选用手册》", 30 June 2016 * |
| 马之庚 等: "《工程塑料手册 材料卷》", 31 October 2004 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170419 |
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| RJ01 | Rejection of invention patent application after publication |