CN102206481A - High-polymer fibre rust-resistant flexible graphite sealing packing - Google Patents
High-polymer fibre rust-resistant flexible graphite sealing packing Download PDFInfo
- Publication number
- CN102206481A CN102206481A CN2011101335102A CN201110133510A CN102206481A CN 102206481 A CN102206481 A CN 102206481A CN 2011101335102 A CN2011101335102 A CN 2011101335102A CN 201110133510 A CN201110133510 A CN 201110133510A CN 102206481 A CN102206481 A CN 102206481A
- Authority
- CN
- China
- Prior art keywords
- graphite
- tarnishing
- macromolecular fibre
- lock packing
- resistant
- 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.)
- Pending
Links
Abstract
The invention discloses a high-polymer fibre rust-resistant flexible graphite sealing packing. The high-polymer fibre rust-resistant flexible graphite sealing packing is prepared by the following steps: sufficiently expanding high-carbon and low-sulfur expandable graphite at high temperature, uniformly paving the high-carbon and low-sulfur expandable graphite on a conveyor belt, and distributing high-polymer fibres on the graphite of the conveyor belt; then adding high-purity ultramicro tiny high-activity metal zinc powder and then carrying out rolling compaction; then cutting into strips by using a cutting modular array along the trend of the fibres and then processing to form a high-polymer fibre rust-resistant flexible graphite line; carrying out intertexture on the high-polymer fibre rust-resistant flexible graphite line, and carrying out mould pressing in advance to form a semi-finished sealing packing; carrying out anti-corrosion lubricating coating treatment on the surface of the semi-finished sealing packing through molybdenum disulfide, drying, making into finished products with various specifications and packaging. Due to the adoption of the technical scheme, compared with the prior art, the high-polymer fibre rust-resistant flexible graphite sealing packing has the advantages of adaptation to working conditions of high pressure and high linear velocity, enhanced anti-corrosion capacity, long service life and low cost.
Description
Technical field
The invention belongs to the lock packing technical field, the lock packing of a kind of macromolecular fibre rust resistance of specific design soft graphite.
Background technology
Install and use in the process at rotor pump, reciprocation pump, valve seal filler, adopt cotton yarn to strengthen flexible graphite stuffing usually as first-selected lock packing.The self lubricity of flexible graphite stuffing is good, erosion resistance is strong because cotton yarn strengthens on the one hand, and fitting operation is easy, and flexible graphite stuffing is the environment-friendly type lock packing that substitutes traditional asbestos packing on the other hand, and its cost performance is higher relatively.But because the restriction of vegetable fibre self character causes its heatproof, tensile strength, ultimate compression strength to descend to some extent; Common in addition soft graphite is because himself sulfur-bearing oxidation affects, cause leakage, often find that not only flexible graphite packing damages in advance when upgrading sealing member, the corrosion phenomena that weight differs also takes place in the sealing element surface of its contact, the valve rod distortion of corroding, need to change valve rod, cause certain financial loss.This just is badly in need of wanting a kind of work condition environment that had both adapted to High Voltage, high linear speed, anti-corrosion capability is arranged, the novel seal filler of long service life again.
Summary of the invention
For addressing the above problem, it is lower to the purpose of this invention is to provide a kind of cost, the macromolecular fibre rust resistance soft graphite lock packing significantly of high strength, resistant to tarnishing effect.
For achieving the above object, the technical scheme that the present invention takes is that described macromolecular fibre resistant to tarnishing soft graphite lock packing adopts the high-carbon low-sulfur expansible black lead fully to expand 200～260 times through 600～1200 ℃ of high temperature, evenly be laid on the travelling belt, on the graphite of many 12tex macromolecular fibre arranged distribution travelling belts, evenly add high-purity super fine high activity metal zinc powder by the particulate powders adding set on the transport unit then, roll again, cut slivering along fiber orientation through the cutting die matrix then, become diameter 1～13mm by the soft graphite bar apparatus processing that spins again, the macromolecular fibre resistant to tarnishing soft graphite line that the twist is 360～1440 °, macromolecular fibre resistant to tarnishing graphite line is through the punching braiding, after the pre-mold pressing is the work in-process lock packing, work in-process lock packing surface is made anticorrosion slip coating by molybdenumdisulphide and is handled, the molybdenumdisulphide coat-thickness of work in-process lock packing surface is 0.1～0.5mm, oven dry, make all size finished product as required, packing is the lock packing of macromolecular fibre resistant to tarnishing soft graphite.
The thickness that above-mentioned graphite is laid on the travelling belt is 1～5mm.
The spacing of macromolecular fibre is 1～3mm on the described travelling belt graphite.
The weight proportion of above-mentioned graphite and zinc powder is 100:1～6.
The molybdenumdisulphide coat-thickness of described work in-process lock packing surface is 0.1～0.5mm.
Above-mentioned macromolecular fibre can be one or more mixing wherein such as PAN fiber, polythene PE fiber, polypropylene PP fiber, polyurethane PU fiber, Teflon PTFE fiber, acrylic fiber, phenolic fibre.
Because the present invention has taked technique scheme, macromolecular fibre has high strength, high temperature resistant, corrosion resistant characteristic, makes the tensile strength of lock packing and ultimate compression strength improve 30～50%; Add high-purity super fine high activity metal zinc powder in the lock packing, when galvanic corrosion took place, with more active metallic zinc, sacrificial anode, what be corroded was exactly the sort of than the more active metallic zinc of iron, and iron is protected, and promptly valve-rod body (iron) is protected; Be coated with the molybdenumdisulphide coating in the lock packing surface, the molybdenumdisulphide coating has erosion resistance and wear resistance, can make lock packing surface and sealing surface, contact site more corrosion-resistant, increases the service life.Compared with prior art, the present invention has the work condition environment that both adapts to High Voltage, high linear speed, strengthens anti-corrosion capability again, long service life, the advantage that cost is low.
Embodiment
Macromolecular fibre resistant to tarnishing soft graphite lock packing of the present invention adopts the lock packing of the described macromolecular fibre resistant to tarnishing of high-carbon low-sulfur soft graphite to adopt the high-carbon low-sulfur expansible black lead fully to expand 200～260 times through 600～1200 ℃ of high temperature, evenly be laid on the travelling belt, on the graphite of many 12tex macromolecular fibre arranged distribution travelling belts, evenly add high-purity super fine high activity metal zinc powder by the particulate powders adding set on the transport unit then, roll again, cut slivering along fiber orientation through the cutting die matrix then, become diameter 1～13mm by the soft graphite bar apparatus processing that spins again, the macromolecular fibre resistant to tarnishing soft graphite line that the twist is 360～1440 °, macromolecular fibre resistant to tarnishing graphite line is through the punching braiding, after the pre-mold pressing is the work in-process lock packing, work in-process lock packing surface is made anticorrosion slip coating by molybdenumdisulphide and is handled, the molybdenumdisulphide coat-thickness of work in-process lock packing surface is 0.1～0.5mm, oven dry, make all size finished product as required, packing is the lock packing of macromolecular fibre resistant to tarnishing soft graphite.
The thickness that above-mentioned graphite is laid on the travelling belt is 1～5mm.
The spacing of macromolecular fibre is 1～3mm on the described travelling belt graphite.
The weight proportion of above-mentioned graphite and zinc powder is 100:1～6.
The molybdenumdisulphide coat-thickness of described work in-process lock packing surface is 0.1～0.5mm.
Above-mentioned macromolecular fibre can be one or more mixing wherein such as PAN fiber, polythene PE fiber, polypropylene PP fiber, polyurethane PU fiber, Teflon PTFE fiber, acrylic fiber, phenolic fibre.
Embodiment 1:
Macromolecular fibre resistant to tarnishing soft graphite lock packing of the present invention adopts the high-carbon low-sulfur expansible black lead fully to expand 200 times through 600 ℃ of high temperature, evenly be laid on the travelling belt, the graphite laying depth is 1mm, on the graphite of many 12tex macromolecule polypropylene PP fibre array distribution conveyor, the spacing of macromolecular fibre is 1mm on the described travelling belt graphite; (what this device used is that the patent No. is: the device of ZL 2,010 2 0220282.3) evenly add high-purity super fine high activity metal zinc powder by the particulate powders adding set on the transport unit then, the weight proportion of graphite and zinc powder is 100:1, roll again, cut slivering along fiber orientation through the cutting die matrix then, being spinned by the soft graphite bar, (what this equipment used is that the patent No. is to equipment: the equipment of ZL 2,010 2 0220283.8) be processed into diameter 1mm again, the macromolecular fibre resistant to tarnishing soft graphite line that the twist is 360 °, macromolecular fibre resistant to tarnishing graphite line is through the punching braiding, after the pre-mold pressing is the work in-process lock packing, work in-process lock packing surface is made anticorrosion slip coating by molybdenumdisulphide and is handled, the molybdenumdisulphide coat-thickness of work in-process lock packing surface is 0.1mm, oven dry, make all size finished product as required, packing is the lock packing of macromolecular fibre resistant to tarnishing soft graphite.
Embodiment 2:
Macromolecular fibre resistant to tarnishing soft graphite lock packing of the present invention adopts the high-carbon low-sulfur expansible black lead fully to expand 230 times through 1000 ℃ of high temperature, evenly be laid on the travelling belt, the graphite laying depth is 3mm, on the graphite of many 12tex polymer PAN fibre array distribution conveyor, the spacing of macromolecular fibre is 2mm on the described travelling belt graphite; (what this device used is that the patent No. is: the device of ZL 2,010 2 0220282.3) evenly add high-purity super fine high activity metal zinc powder by the particulate powders adding set on the transport unit then, the weight proportion of graphite and zinc powder is 100:4, roll again, cut slivering along fiber orientation through the cutting die matrix then, being spinned by the soft graphite bar, (what this equipment used is that the patent No. is to equipment: the equipment of ZL 2,010 2 0220283.8) be processed into diameter 8mm again, the macromolecular fibre resistant to tarnishing soft graphite line that the twist is 720 °, macromolecular fibre resistant to tarnishing graphite line is through the punching braiding, after the pre-mold pressing is the work in-process lock packing, work in-process lock packing surface is made anticorrosion slip coating by molybdenumdisulphide and is handled, the molybdenumdisulphide coat-thickness of work in-process lock packing surface is 0.3mm, oven dry, make all size finished product (as the lock packing ring) as required, packing is the lock packing of macromolecular fibre resistant to tarnishing soft graphite.
Embodiment 3:
Macromolecular fibre resistant to tarnishing soft graphite lock packing of the present invention adopts the high-carbon low-sulfur expansible black lead fully to expand 260 times through 1200 ℃ of high temperature, evenly be laid on the travelling belt, the graphite laying depth is 5mm, on the graphite of many 12tex high-molecular polythene PE fibre array distribution conveyor, the spacing of macromolecular fibre is 3mm on the described travelling belt graphite; (what this device used is that the patent No. is: the device of ZL 2,010 2 0220282.3) evenly add high-purity super fine high activity metal zinc powder by the particulate powders adding set on the transport unit then, the weight proportion of graphite and zinc powder is 100:6, roll again, cut slivering along fiber orientation through the cutting die matrix then, being spinned by the soft graphite bar, (what this equipment used is that the patent No. is to equipment: the equipment of ZL 2,010 2 0220283.8) be processed into diameter 13mm again, the macromolecular fibre resistant to tarnishing soft graphite line that the twist is 1440 °, macromolecular fibre resistant to tarnishing graphite line is through the punching braiding, after the pre-mold pressing is the work in-process lock packing, work in-process lock packing surface is made anticorrosion slip coating by molybdenumdisulphide and is handled, the molybdenumdisulphide coat-thickness of work in-process lock packing surface is 0.5mm, oven dry, make all size finished product as required, packing is the lock packing of macromolecular fibre resistant to tarnishing soft graphite.
Use the present invention can effectively improve the ultimate compression strength of soft graphite lock packing, rotor pump uses ultimate compression strength of the present invention to be brought up to by 3Mpa to be 4Mpa; Reciprocation pump uses ultimate compression strength of the present invention to be brought up to by 10Mpa to be 13Mpa; Valve uses ultimate compression strength of the present invention to be brought up to by 20Mpa to be 30Mpa; Linear velocity is brought up to 20m/s by 12m/s, heatproof is brought up to-50 ℃～500 ℃ by-50 ℃～455 ℃, and by can 48 hours service pressures testing under 650 ℃ of steam mediums, prolong 1.5 times of normal replacement cycles, when changing filler, several nothings find that the valve-rod body corrosion phenomena takes place, and have both enlarged use range, have also improved the work-ing life of equipment.
Claims (6)
1. macromolecular fibre resistant to tarnishing soft graphite lock packing, it is characterized in that described macromolecular fibre resistant to tarnishing soft graphite lock packing employing high-carbon low-sulfur expansible black lead fully expands 200～260 times through 600～1200 ℃ of high temperature, evenly be laid on the travelling belt, on the graphite of many 12tex macromolecular fibre arranged distribution travelling belts, evenly add high-purity super fine high activity metal zinc powder by the particulate powders adding set on the transport unit then, roll again, cut slivering along fiber orientation through the cutting die matrix then, become diameter 1～13mm by the soft graphite bar apparatus processing that spins again, the macromolecular fibre resistant to tarnishing soft graphite line that the twist is 360～1440 °, macromolecular fibre resistant to tarnishing graphite line is through the punching braiding, after the pre-mold pressing is the work in-process lock packing, work in-process lock packing surface is made anticorrosion slip coating by molybdenumdisulphide and is handled, the molybdenumdisulphide coat-thickness of work in-process lock packing surface is 0.1～0.5mm, oven dry, make all size finished product as required, packing is the lock packing of macromolecular fibre resistant to tarnishing soft graphite.
2. according to the lock packing of the described macromolecular fibre resistant to tarnishing of claim 1 soft graphite, it is characterized in that the thickness that above-mentioned graphite is laid on the travelling belt is 1～5mm.
3. according to the lock packing of the described macromolecular fibre resistant to tarnishing of claim 1 soft graphite, the spacing that it is characterized in that macromolecular fibre on the described travelling belt graphite is 1～3mm.
4. according to claim 1 or 2 or 3 described macromolecular fibre resistant to tarnishing soft graphite lock packing, the weight proportion that it is characterized in that above-mentioned graphite and zinc powder is 100:1～6.
5. according to claim 1 or 2 or 3 described macromolecular fibre resistant to tarnishing soft graphite lock packing, it is characterized in that the molybdenumdisulphide coat-thickness of described work in-process lock packing surface is 0.1～0.5mm.
6. according to claim 1 or 2 or 3 described macromolecular fibre resistant to tarnishing soft graphite lock packing, it is characterized in that above-mentioned macromolecular fibre is one or more mixing in PAN fiber, polythene PE fiber, polypropylene PP fiber, polyurethane PU fiber, Teflon PTFE fiber, acrylic fiber, the phenolic fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101335102A CN102206481A (en) | 2011-05-23 | 2011-05-23 | High-polymer fibre rust-resistant flexible graphite sealing packing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101335102A CN102206481A (en) | 2011-05-23 | 2011-05-23 | High-polymer fibre rust-resistant flexible graphite sealing packing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102206481A true CN102206481A (en) | 2011-10-05 |
Family
ID=44695551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101335102A Pending CN102206481A (en) | 2011-05-23 | 2011-05-23 | High-polymer fibre rust-resistant flexible graphite sealing packing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102206481A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106701017A (en) * | 2017-01-12 | 2017-05-24 | 浙江国泰萧星密封材料股份有限公司 | Production method of flexible graphite braided packing |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2031778A1 (en) * | 1970-06-26 | 1971-12-30 | Marlo Co Inc | High temp packing material |
| US4705722A (en) * | 1986-06-18 | 1987-11-10 | Nippon Pillar Packing Co., Ltd. | Gland packing |
| CN1056561A (en) * | 1991-03-12 | 1991-11-27 | 山东滨州柔性石墨密封件厂 | Expanded graphite and teflon braided composite packing material |
| CN1056560A (en) * | 1991-03-12 | 1991-11-27 | 山东滨州柔性石墨密封件厂 | Expanded graphite and carbon fiber braided composite packing material |
| EP0340303B1 (en) * | 1986-11-25 | 1993-06-02 | Nippon Pillar Packing Co., Ltd. | Packing material and packing made of the same |
| CN1106443A (en) * | 1994-11-22 | 1995-08-09 | 萧山市密封件厂 | Method for prodn. of flexible graphite weaving filler |
| CN1113215A (en) * | 1995-04-21 | 1995-12-13 | 清华大学 | Method for making expansible graphite with low-corrosivity |
-
2011
- 2011-05-23 CN CN2011101335102A patent/CN102206481A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2031778A1 (en) * | 1970-06-26 | 1971-12-30 | Marlo Co Inc | High temp packing material |
| US4705722A (en) * | 1986-06-18 | 1987-11-10 | Nippon Pillar Packing Co., Ltd. | Gland packing |
| EP0340303B1 (en) * | 1986-11-25 | 1993-06-02 | Nippon Pillar Packing Co., Ltd. | Packing material and packing made of the same |
| CN1056561A (en) * | 1991-03-12 | 1991-11-27 | 山东滨州柔性石墨密封件厂 | Expanded graphite and teflon braided composite packing material |
| CN1056560A (en) * | 1991-03-12 | 1991-11-27 | 山东滨州柔性石墨密封件厂 | Expanded graphite and carbon fiber braided composite packing material |
| CN1106443A (en) * | 1994-11-22 | 1995-08-09 | 萧山市密封件厂 | Method for prodn. of flexible graphite weaving filler |
| CN1113215A (en) * | 1995-04-21 | 1995-12-13 | 清华大学 | Method for making expansible graphite with low-corrosivity |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106701017A (en) * | 2017-01-12 | 2017-05-24 | 浙江国泰萧星密封材料股份有限公司 | Production method of flexible graphite braided packing |
| CN106701017B (en) * | 2017-01-12 | 2018-09-21 | 浙江国泰萧星密封材料股份有限公司 | A kind of production method of soft graphite braided packing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102206481A (en) | High-polymer fibre rust-resistant flexible graphite sealing packing | |
| CN104045860A (en) | Cold-resistant rubber clad material used for roller of conveyor | |
| CN101984183B (en) | High performance impregnant for braided packing and impregnation process thereof | |
| CN101985996A (en) | Process for manufacturing internal and external anti-corrosion polytetrafluoroethylene pipe fitting | |
| CN203335860U (en) | Novel graphite packing | |
| CN105803378A (en) | Electric arc sprayed ferrous alloyed low temperature-resistant wear-resistant coating and preparation method thereof | |
| CN102489211B (en) | High-strength corrosion-resistant stirrer blade and manufacturing method thereof | |
| CN104451522A (en) | Hot process for remanufacturing compression roller | |
| CN104194071A (en) | Anticorrosive coating for ocean floating rubber tube | |
| CN102166850B (en) | Metal substrate with thermally-sprayed anti-sticking wear-resistant coating and preparation method as well as application thereof | |
| CN203384376U (en) | Aramid high water-based graphite packing | |
| CN103696943B (en) | Combined type compressor silicon nitride film layer piston ring | |
| CN202683139U (en) | Agitator vane | |
| CN107418402B (en) | Heavy-duty anticorrosive polymer organic rock material and spraying construction method thereof | |
| CN202462787U (en) | Lubricating ejector sleeve mold | |
| CN204486513U (en) | For the round belting that rises of the bell and spigot steel loop of Prestressed concrete cylinder pipe | |
| CN101250298A (en) | Nano ceramic super high molecular weight polyethylene modified material as well as preparation method and use thereof | |
| CN104264079A (en) | High-temperature-resistant and wear-resistant mould material | |
| CN203594580U (en) | Combined type compressor piston ring with chrome-based diamond coating | |
| CN102489212B (en) | Stirrer blade | |
| CN103807458B (en) | A kind of hydrogenation valve and processing method thereof | |
| CN204620987U (en) | A kind of ring spring for block forging frame | |
| CN104672554A (en) | Acid- and alkali-resistant rubber conveyer belt | |
| CN203594579U (en) | Combined type compressor piston ring with silicon nitride film | |
| CN210770723U (en) | Anti-corrosion wear-resistant composite steel pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111005 |