Mukukumana ndi kutentha kwambiri, mankhwala, kapena kukangana kochepa? Dziwani momwe ma PTFE seal (Variseals) opangidwa ndi mphamvu ya masika amagwirira ntchito komanso chifukwa chake ndi njira yodalirika yogwiritsira ntchito zinthu zovuta mu ndege, magalimoto, komanso kupanga.
Chiyambi: Malire a Uinjiniya wa Zisindikizo za Elastomeric
Mu uinjiniya wochita bwino kwambiri, gawo lotsekera nthawi zambiri ndilo chinthu chofunikira kwambiri chomwe chimatsimikizira kudalirika kwa makina. Ngakhale kuti zotsekera za rabara zokhazikika monga mphete za O zimagwirira ntchito bwino m'njira zambiri, zimafika pamlingo wawo zikakumana ndi kutentha kwambiri, mankhwala amphamvu, kuyenda kwamphamvu, kapena zofunikira zochepa. Mavutowa amafuna yankho lomwe limaphatikiza zinthu zapamwamba za ma polima apamwamba ndi mphamvu yokhazikika yotsekera.
Apa ndiye gawo la chisindikizo chogwiritsidwa ntchito ndi masika (chomwe chimadziwika kuti Variseal kapena Spring Seal). Nkhaniyi ikupereka chidziwitso chaukadaulo cha momwe chisindikizochi chimagwirira ntchito, mavuto akuluakulu omwe chimathetsa, komanso zofunikira pakupanga mainjiniya omwe amasankha zisindikizo m'malo ovuta.
1. Mfundo Yaikulu: Kugwirizana kwa Spring ndi Polima
Chisindikizo chogwiritsidwa ntchito ndi masika ndi dongosolo la magawo awiri lopangidwa molondola:
Jekete la Polymer: Kawirikawiri milomo yosindikizidwa yooneka ngati U yopangidwa kuchokera ku PTFE (Teflon®) kapena ma polima ena ogwira ntchito kwambiri monga PEEK kapena UHMWPE. Jekete ili limapereka mawonekedwe oyambira osindikizira, pogwiritsa ntchito kusakhalapo kwa mankhwala kwa chinthucho, kutentha kwakukulu, komanso kusinthasintha kochepa kwambiri.
Kasupe Wopatsa Mphamvu: Kasupe wozungulira, nthawi zambiri wopangidwa ndi chitsulo chosapanga dzimbiri kapena zitsulo zogwira ntchito kwambiri monga Elgiloy®, amakhala mkati mwa njira ya U-channel ya jekete.
Njira yotsekera ndi yothandiza kwambiri:
1. Kasupe amapereka mphamvu yokhazikika, yodziwikiratu, kukankhira mlomo wotseka wa jekete motsutsana ndi shaft kapena nyumba (khoma la gland).
2. Pamene mphamvu ya dongosolo ikugwiritsidwa ntchito, imagwira ntchito pa chosindikizira, ndikuwonjezera mphamvu ya milomo motsutsana ndi pamwamba pa cholumikizira. Izi zimapangitsa kuti chisindikizocho chikhale chodalirika kwambiri komanso cholimbikitsidwa.
3Ntchito yofunika kwambiri ya kasupe ndikuthandizira kuwonongeka kwa zinthu (kuwonongeka) ndikukhalabe ndi mphamvu yotsekera ngakhale kuti dongosolo silikugwirizana bwino, kusinthasintha, kapena kusintha kwa kutentha komwe kumachitika chifukwa cha kutentha. Izi zimatsimikizira kuti chisindikizocho chimagwira ntchito nthawi zonse.
2. Mavuto Ofunika Kwambiri Ogwiritsa Ntchito ndi Momwe Zisindikizo Zolimbikitsidwa ndi Masika Zimathetsera Mavutowa
Ukadaulo uwu wapangidwa kuti uthetse mavuto enaake komanso okwera mtengo a uinjiniya:
Vuto: Kutentha Kwambiri ndi Kuyenda kwa PTFE Kozizira.
Chitsanzo: Kutseka madzi oundana monga nayitrogeni yamadzimadzi (-200°C) kapena madzi oundana otentha kwambiri (>200°C).
Yankho: PTFE imasunga mawonekedwe ake pa kutentha kwakukulu komwe ma elastomer amalephera. Komabe, PTFE imakonda "kuzizira" - kusintha kwa kutentha komwe kumachitika nthawi zonse. Kasupe wamkati umalimbana ndi kugwedezeka uku, kusunga kupanikizika kwabwino kwa milomo ndikuletsa kulephera kwa chisindikizo pakapita nthawi.
Vuto: Malo Ovuta a Mankhwala kapena Plasma.
Chitsanzo: Kutseka zosungunulira zamphamvu, ma acid, maziko, kapena zida zopangira ma wafer a semiconductor ndi ma plasma owononga.
Yankho: PTFE ndi yopanda mankhwala ambiri, imapereka kukana kwakukulu ku mitundu yosiyanasiyana ya zinthu zowononga. Izi zimapangitsa kuti zisindikizo zogwiritsidwa ntchito m'masika zikhale zoyenera kugwiritsidwa ntchito pokonza mankhwala, mankhwala, komanso kugwiritsa ntchito semiconductor.
Vuto: Kugwiritsa Ntchito Mosinthasintha ndi Mafuta Ochepa/Opanda Mafuta.
Chitsanzo: Ma shaft ozungulira othamanga kwambiri m'zida zodziwika bwino monga chakudya, zipinda zoyera, kapena kugwiritsa ntchito mafuta ngati mafuta sakufunikira.
Yankho: Kupaka mafuta kwachilengedwe kwa PTFE kumalola kuti zisindikizo izi zigwire ntchito popanda kukangana ndi kuwonongeka kwambiri, ngakhale m'malo ouma kapena omwe ali ndi mafuta ochepa. Izi zimachepetsa kugwiritsa ntchito mphamvu ndi kupanga kutentha.
Vuto: Kudalirika Kwa Nthawi Yaitali Kopanda Kukonza Kwambiri.
Chitsanzo: Chimatseka m'malo osafikirika kapena m'mapulogalamu omwe nthawi yosakonzekera yopuma imakhala yokwera mtengo kwambiri.
Yankho: Mphamvu yosalekeza ya kasupe imalimbitsa milomo yosweka, zomwe zimapangitsa kuti chisindikizocho "chidzisintha chokha." Izi zikutanthauza kuti nthawi yayitali yogwirira ntchito komanso nthawi yabwino pakati pa kulephera (MTBF), zomwe zimachepetsa mtengo wonse wa umwini.
3. Kapangidwe Kofunikira ndi Kusankha Zinthu Kuti Zigwire Bwino Ntchito
Kusankha chisindikizo choyenera chogwiritsidwa ntchito ndi masika si chinthu chachizolowezi; kumafuna kuganizira mosamala zinthu zingapo:
Zipangizo za Jekete:
Virgin PTFE: Muyezo wa ntchito zambiri zamakemikolo ndi kutentha.
PTFE yodzazidwa (monga, yokhala ndi Galasi, Kaboni, Graphite, Bronze): Imagwiritsidwa ntchito polimbikitsa kukana kukalamba, kuchepetsa kuyenda kwa kuzizira, kusintha kutentha, kapena kuwonjezera kuuma.
Ma polima ena (PEEK, UHMWPE): Amasankhidwa pa zosowa zinazake monga mphamvu yapamwamba yamakina (PEEK) kapena kukana kwapamwamba kwa abrasion (UHMWPE).
Mtundu wa Masika ndi Zinthu Zake:
Mphamvu ya Kasupe: Masiponji opepuka, apakatikati, kapena olemera amasankhidwa kutengera kuthamanga, liwiro, ndi kukangana komwe kumafunika.
Zinthu Zam'masika:
Chitsulo Chosapanga Dzira (302, 316): Choteteza ku dzimbiri.
Elgiloy®/Hastelloy®: Yoyenera malo ovuta kwambiri omwe amafunikira kukana kwambiri ku zinyalala, kutentha kwambiri, ndi madzi owononga monga madzi amchere.
Seal Geometry: Kapangidwe ka U-cup kakhoza kukonzedwa bwino kuti kagwiritsidwe ntchito mozungulira, mobwerezabwereza, kapena mosasunthika. Zinthu monga ngodya ya milomo, kutalika kwa chidendene, ndi makulidwe a jekete ndizofunikira kwambiri ndipo zimatsimikiziridwa bwino ndi wopanga wodziwa bwino ntchito.
4. Kusiyana kwa Kupanga: Chifukwa Chake Kulondola N'kofunika
Kugwira ntchito kwa chisindikizo chogwiritsa ntchito mphamvu ya kasupe kumachitika pokhapokha ngati zinthu zachitika bwino. Masipiringi osasinthasintha kapena majekete osagwiritsidwa ntchito bwino amapangitsa kuti zinthu zisamayende bwino msanga. Mizati yofunika kwambiri yopangira zinthu ndi iyi:
Kupanga Majekete Mwanzeru: Jekete la PTFE liyenera kupangidwa mwaluso, osati kungotulutsidwa, kuti likhale lolimba komanso lokongola kwambiri pa mlomo wotseka. Mlomo wosalala komanso wokhazikika ndi wofunikira kuti milomo ikhale yolimba komanso yotseka bwino.
Kugwirizana kwa Masika: Masika ayenera kuzunguliridwa molingana ndi zomwe zafotokozedwa, kuonetsetsa kuti mphamvu zonse zikugawidwa mozungulira chisindikizo chonse. Kugwirizana kwa batch-to-batch sikungatheke kukambirana.
Kuwongolera Ubwino Kwambiri: Gulu lililonse lopanga liyenera kuyesedwa mozama ndi kutsimikiziridwa ndi zinthuzo. Kutsata kuyambira pazinthu zopangira mpaka zinthu zomalizidwa kumapereka chitsimikizo cha mtundu ndi kutsata malamulo (monga ROHS, REACH).
Kutsiliza: Kutchula Chisindikizo Choyenera Kuti Mukhale Wodalirika Kwambiri
Zisindikizo zogwiritsidwa ntchito ndi masika ndi njira yodalirika komanso yodalirika yogwiritsira ntchito pomwe ma elastomer wamba sagwira ntchito bwino. Kutha kwawo kugwira ntchito bwino kwambiri pamene amachepetsa ndalama zosamalira nthawi yayitali kumawapangitsa kukhala ndalama zanzeru zoyendetsera ntchito.
Kupambana kumadalira kumvetsetsa zomwe pulogalamuyo ikufuna komanso kugwirizana ndi wogulitsa yemwe amadziwa bwino zinthu zosiyanasiyana komanso kupanga zinthu molondola.
Kodi mwakonzeka kuthana ndi mavuto anu ovuta kwambiri otseka zitseko?
Lumikizanani nafe kuti tikambirane za fomu yanu yofunsira.Gulu lathu laukadaulo likhoza kupereka malangizo ozikidwa pa deta, mapangidwe apadera, ndi zitsanzo kuti polojekiti yanu ipambane.
Nthawi yotumizira: Disembala-18-2025