PTFE Coated O-Ring
PTFE Coated O-Rings ke eng
Li-O-rings tse koahetsoeng ke PTFE ke litiiso tse kopantsoeng tse nang le mokokotlo oa O-ring ea setso (mohlala, NBR, FKM, EPDM, VMQ) e le substrate ea elastic, eo holim'a eona ho sebelisoang filimi e tšesaane, ea junifomo le e tiileng ea polytetrafluoroethylene (PTFE). Sebopeho sena se kopanya melemo ea thepa ka bobeli, e hlahisang litšobotsi tse ikhethang tsa ts'ebetso.
Libaka tsa Kopo ea mantlha
Ka lebaka la thepa ea bona e ikhethang, li-O-rings tse koahetsoeng ke PTFE li sebelisoa haholo libakeng tse boima tse nang le litlhoko tse khethehileng tsa ho tiisa:
Indasteri ea Lik'hemik'hale le Petrochemical:
Li-valve tsa ho tiisa, lipompo, li-reactor le liphaephe tse sebetsanang le mecha ea litaba e senyang haholo joaloka li-acid tse matla, li-alkali tse matla, li-oxidizer tse matla le lihlapolli tsa tlhaho.
Ho tiisa lits'ebetsong tsa phano ea lik'hemik'hale tse hloekileng haholo ho thibela tšilafalo.
Indasteri ea Pharmaceutical & Biotechnology:
Ho tiisa lisebelisoa tsa ts'ebetso tse hlokang bohloeki bo phahameng, ha ho na leaching, 'me ha ho na tšilafalo (mohlala, li-bioreactors, fermenters, lisebelisoa tsa tlhoekiso, likhoele tsa ho tlatsa).
Ho tiisa ho hanyetsana le lihloekisi tse matla tsa lik'hemik'hale le mouoane oa mocheso o phahameng o sebelisoang lits'ebetsong tsa CIP (Clean-in-Place) le SIP (Sterilize-in-Place).
Indasteri ea Lijo le Lino:
Litiiso tsa lisebelisoa tse kopanang le FDA/USDA/EU melaoana ea ho ikopanya le lijo (mohlala, lisebelisoa tsa ho lokisa, li-filler, liphaephe).
E hanana le lisebelisoa tsa ho hloekisa tsa boemo ba lijo le li-sanitizer.
Indasteri ea Semiconductor le Electronics:
Litiiso bakeng sa metsi a ultrapure (UPW) le lik'hemik'hale tse hloekileng haholo (li-acids, alkalis, solvents) le mekhoa ea ho sebetsana le tsamaiso, e hlokang tlhahiso e tlaase haholo ea likaroloana le leaching ea ion ea tšepe.
Litiiso tsa liphaposi tsa vacuum le lisebelisoa tsa ho lokisa plasma (tse hlokang ho tsoa ho tlase).
Indasteri ea Likoloi:
Ho tiisa libakeng tse nang le mocheso o phahameng joalo ka lits'ebetso tsa turbocharger le litsamaiso tsa EGR.
Litiiso tse hlokang khohlano e tlase le khanyetso ea lik'hemik'hale phetisong le lits'ebetsong tsa mafura.
Lits'ebetso ho sistimi e ncha ea matla a betri ea koloi.
Sepakapaka le Tšireletso:
Litiiso tse hlokang ho ts'eptjoa ho phahameng, ho hanyetsa mocheso o feteletseng, le ho hanyetsa mafura a khethehileng / metsi a hydraulic tsamaisong ea hydraulic, tsamaiso ea mafura, le mekhoa ea ho laola tikoloho.
Indasteri e Akaretsang:
Litiiso tsa li-cylinders tsa pneumatic le hydraulic tse hlokang ho ferekana ho tlase, bophelo bo bolelele, le ho hanyetsa ho roala (haholo-holo bakeng sa motsamao oa lebelo le phahameng, oa maqhubu a phahameng).
Litiiso bakeng sa li-valve tse fapaneng, lipompo le likhokahano tse hlokang khanyetso ea lik'hemik'hale le thepa e se nang thupa.
Litiiso tsa lisebelisoa tsa vacuum (tse hlokang ho tsoa ho tlase).
Melemo e Ikhethang le Litšobotsi tsa Ts'ebetso
Monyetla oa mantlha oa li-O-rings tse koahetsoeng ke PTFE o ka har'a ts'ebetso e ntlafalitsoeng ea komporo e nkiloeng sebopeho sa bona:
Boikemisetso bo Botle ba Lik'hemik'hale:
E 'ngoe ea melemo ea mantlha. PTFE e bonts'a khanyetso e ikhethang ho hoo e batlang e le lik'hemik'hale tsohle (ho kenyeletsoa li-acid tse matla, alkalis e matla, aqua regia, li-solvents, joalo-joalo), tseo boholo ba li-substrates tsa rabara li ke keng tsa li finyella li le mong. Ho roala ka mokhoa o atlehileng ho arola mecha ea litaba e senyang ho tloha mokokotlong oa rabara e ka hare, ho atolosa haholo mefuta ea ts'ebeliso ea O-ring libakeng tse feteletseng tsa lik'hemik'hale.
Coefficient e Tlase Haholo (CoF):
Molemo oa bohlokoa. PTFE e na le e 'ngoe ea boleng bo tlase ba CoF har'a lisebelisoa tse tiileng tse tsejoang (hangata 0.05-0.1). Sena se etsa hore li-O-rings tse koahetsoeng li atlehe lits'ebetsong tse matla tsa ho tiisa (mohlala, lithupa tsa piston tse khutlisang, li-shaft tse potolohang):
E fokotsa haholo khatello ea maikutlo le khatello ea maikutlo.
E fokotsa mocheso o bakoang ke khohlano.
E eketsa bophelo ba tiiso (haholo-holo ka lebelo le phahameng, lits'ebetso tsa maqhubu a holimo).
E ntlafatsa ts'ebetso ea matla a sistimi.
Sebaka se Sephara sa Mocheso oa Mocheso:
The PTFE barbotage ka boeona e boloka tshebetso ho pholletsa le mocheso o pharaletseng haholo ho tloha -200°C ho +260°C (nako e khutšoanyane ho fihlela ho +300°C). Sena se eketsa haholo mocheso o ka holimo oa mocheso oa motheo oa O-ring (mohlala, setsi sa NBR hangata se lekanyelitsoe ho ~ 120 ° C, empa ka PTFE e ka sebelisoa ka mocheso o phahameng, ho itšetlehile ka rabara e khethiloeng). Ts'ebetso e tlase ea mocheso le eona e netefalitsoe.
Thepa e Ntle e Ntle le e Seng ea Metsi:
PTFE e na le matla a tlase haholo a holim'a metsi, e etsa hore e hanyetsane haholo le ho khomarela le ho se kolobise ka metsi le lino tse thehiloeng ka oli. Sena se fella ka:
Ho fokotsa litšila, ho pheha, kapa ho khomarela masala a mecha ea litaba sebakeng se tiisitsoeng.
Ho hloekisa habonolo, haholo-holo ho loketse likarolo tsa bohloeki bo phahameng joalo ka lijo le pharma.
E bolokiloe ts'ebetso ea ho tiisa esita le ka mecha ea phatlalatso ea viscous.
Bohloeki bo Phahameng le lintho tse sa Fumanehang tse Fokolang:
Sebaka se boreleli, se teteaneng sa PTFE se fokotsa ho tsoa ha likaroloana, li-additives, kapa lintho tse boima ba limolek'hule tse tlase. Sena se bohlokoa bakeng sa lits'ebetso tsa bohloeki bo phahameng haholo ho li-semiconductors, pharma, biotech, le lijo le seno, ho thibela ka nepo tšilafalo ea sehlahisoa.
Good Wear Resistance:
Le ha ts'ebetso ea PTFE ea tlhaho e sa sebetse hantle, CoF ea eona e tlase haholo e fokotsa sekhahla sa ho roala. Ha e kopantsoe le substrate e loketseng ea rabara (e fanang ka tšehetso le botsitso) le ho qeta holimo holimo / ho tlotsa, li-O-rings tse koahetsoeng ka kakaretso li bonts'a ho hanyetsa ho apara ho feta li-O-rings tse se nang letho ha li sebelisoa ka matla.
Khanyetso e Matlafalitsoeng ea Lik'hemik'hale ea Substrate ea Rabara:
Ho roala ho sireletsa bokahare ba rabara ho tloha tlhaselong ea mecha ea litaba, ho lumella tšebeliso ea lisebelisoa tsa rabara tse nang le thepa e ntle ea tlhaho (joaloka elasticity kapa litšenyehelo, mohlala, NBR) mecheng ea litaba e neng e ka ruruha, ea thatafatsa kapa ea theola rabara. E ka "hloma" ka katleho elasticity ea rabara e nang le lik'hemik'hale tsa PTFE.
E lumellana hantle le Vacuum:
Liaparo tsa boleng bo holimo tsa PTFE li na le letsoalo le letle 'me ka tlhaho li tsoa ka tlase, li kopantsoe le elasticity ea mantlha ea rabara, e fana ka tiiso e sebetsang ea vacuum.
3.Lintlha tsa Bohlokoa
Litšenyehelo: Ho feta li-O-ring tsa rabara tse tloaelehileng.
Litlhoko tsa ho kenya: Ho hloka ho tšoaroa ka hloko ho qoba ho senya seaparo ka lisebelisoa tse bohale. Li-grooves tsa ho kenya li lokela ho ba le li-chamfers tse lekaneng tsa lead le lithako tse boreleli.
Ho roala Botšepehi: Boleng ba ho roala (ho khomarela, ho tšoana, ho ba sieo ha likoti) ke habohlokoa. Haeba lesela le robehile, rabara e pepesitsoeng e lahleheloa ke khanyetso e matla ea lik'hemik'hale.
Compression Set: Haholo-holo e itšetlehile ka substrate e khethiloeng ea rabara. Ho roala ka boeona ha ho fane ka mamello e hatellang.
Bophelo ba Tšebeletso ea Matla: Le hoja e phahame haholo ho feta rabara e se nang letho, qetellong e tla senyeha ka lebaka la ho sisinyeha ha nako e telele, ho matla kapa ho potoloha. Ho khetha liraba tsa motheo tse sa senyeheng (mohlala, FKM) le moralo o ntlafalitsoeng ho ka lelefatsa bophelo.
Kakaretso
Bohlokoa ba mantlha ba li-O-rings tse koahetsoeng ke PTFE bo itšetlehile ka mokhoa oo PTFE e koahelang ka eona e fanang ka lik'hemik'hale tse phahameng ka ho fetisisa, li-coefficient tse tlase haholo tsa khohlano, mocheso o pharaletseng, thepa e sa tsitsang, bohloeki bo phahameng, le tšireletso ea substrate ho li-ring tsa setso tsa rabara. Ke tharollo e nepahetseng bakeng sa liphephetso tse hlokang ho tiisa tse kenyelletsang kutu e matla, bohloeki bo phahameng, khohlano e tlase le mocheso o pharalletseng. Ha u khetha, ho bohlokoa ho khetha thepa e nepahetseng ea substrate ea rabara le litlhaloso tsa ho roala ho ipapisitse le ts'ebeliso e ikhethileng (media, mocheso, khatello, dynamic / static), le ho netefatsa ts'ebetso e nepahetseng le tlhokomelo ho boloka bots'epehi ba ho koala le ts'ebetso ea tiiso.
Tafole e ka tlase e akaretsa litšobotsi tsa bohlokoa le ts'ebeliso ea li-O-rings tse koahetsoeng ke PTFE:
