Selelekela
O-maheleke likarolo tsa bohlokoa bakeng sa ho boloka ts'ebetso ea ho tiisa lits'ebetsong tsa indasteri mme li sebelisoa haholo mochining, lik'hemik'hale, sefofane le masimo a mang. Leha ho le joalo, ha tikoloho ea mosebetsi e kenyelletsa mocheso o phahameng, libeso tse senyang haholo kapa likhase, lisebelisoa tse tloaelehileng tsa rabara li na le tšekamelo ea ho thatafala, ho atolosoa le ho phunyeha, ho ama ka ho toba botsitso le polokeho ea tsamaiso. Sengoliloeng sena se tla qala ka tikoloho e thata ho u thusa ho utloisisa lintlha tsa bohlokoa tsa ho khetha O-rings.
O-Ring in High{1}}Tikoloho ea Mocheso
Ha lisebelisoa li le tlas'a mocheso o fetang 150℃ka nako e telele kapa maemo a phahameng a nakoana a phahameng-joalo ka li-engine blocks, li-valve tsa mouoane, le liboiler flanges, ke{2}}boemo bo phahameng ba ho sebetsa. Likotsi tse amanang le{4}}tikoloho e phahameng ea mocheso li bonahala haholo likarolong tse peli:
• Matšoenyeho a nakoana a phahameng-mocheso:Ho phahama ha mocheso ka tšohanyetso ho ka baka lekhalo la mocheso le khalori sebakeng sa O{0}};
• Ho tsofala ha mocheso nako e telele-:Sena se ka baka ho robeha ha ketane ea limolek'hule, ho thatafala ho eketsehileng, ho fokotseha ha elasticity, le ho hloleha ho koala holimo.
Rabara e tloaelehileng e na le ho fokotseha ha volumetric le khatello e feteletseng e behiloeng mochesong o ka holimo ho likhato tse 150, 'me e ka ba carbonize le ho phatloha ka likhato tse 250.
Ke Khetha O-Lisebelisoa life tsa Ring?
Bakeng sa{0}}maemo a phahameng a mocheso, ntho ea bohlokoa ka ho fetisisa e hlokahalang ke bokhoni ba ho mamella mocheso o phahameng.
FKM
Ka kakaretso e boloka botsitso ba sebopeho lipakeng tsa -20 degrees le 250℃, e khona ho mamella mocheso o phahameng oa 300℃ka nako e khuts'oane, 'me e hanana hantle- le oxidation e phahameng ea mocheso le botsofali. Bakeng sa maemo a tloaelehileng a-mocheso o phahameng, FKM O-rings e ka qoba ho putlama le ho fokotsa kotsi ea ho lutla.
FFKM
E mamella mocheso ho tloha ho -20 degrees ho isa ho 320 degrees 'me e hanela kutu e tsoang ho{4}}ea mocheso o phahameng joalo ka plasma. Maemong a feteletseng a kang liphaposi tse tukang tsa enjene ea sepakapaka le{5}}lisebelisoa tse phahameng tsa mocheso indastering ea nyutlelie, FFKM e ka rarolla bothata ba ho qhibiliha le ho etsa carbonization ea thepa e tloaelehileng, ho netefatsa botšepehi ba ho tiisa nako e telele.
VMQ
E na le mocheso o pharalletseng oa -60 degrees to 200℃, e ikamahanya le maemo a fapanyetsanang a mocheso o tlase le o phahameng, 'me e kopana le maemo a lijo- Bakeng sa maemo a kang ho tiisa litanka tsa polokelo ea mocheso o phahameng le o tlaase ka thepa ea ho lokisa lijo ntle le meroalo e phahameng ea khatello, e ka rarolla bothata ba tahlehelo ea elasticity e bakoang ke ho fetoha ha mocheso, empa ho hloka mohaho o sireletsang ho lefella matla a sa lekaneng a mechine.
O-lietsahala Libakeng tse Fapaneng tsa Mafura
Li-Rubber seal ka har'a peterole hangata li pepesetsoa peterole, diesel, ethanol-lioso tse tsoakiloeng, le libeso tse nkhang hamonate, tse tsamaeang le mocheso o mahareng ho isa holimo oa likhato tse 100–200 . Lisebelisoa tse tloaelehileng li kenyelletsa litsamaiso tsa mafura a enjene, lipompo tsa petrochemical, le mehala ea mafura a sefofane.
Li-hydrocarbon tse nkhang hamonate, li-ester le li-additives ka har'a mafura li ka baka liphoso tse peli:
• Ho ruruha ha rabara:Limolek'hule tsa mafura li kenella ka har'a thepa, li baka katoloso ea molumo le ho fokotseha ha ho hatelloa, ho bakang tahlehelo ea O-ring ea ho tiisa.
• Oxidative cracking:Li-additives ka har'a peterole li kopana le oksijene, e lebisang ho thatafalang ha thepa kapa ho phatloha ha bokaholimo.
O-Sesebediswa sefe se Lokelang ho Kgethwa?
Hobane tikoloho ea mafura e tsamaea le maemo a mocheso a mahareng ho isa holimo a 100-200℃, O-rings ha ea tlameha ho ba le ho hanyetsa oli hantle feela, empa hape le tekanyo e itseng ea ho hanyetsa mocheso.
NBR
E na le khanyetso ea mantlha ea oli 'me e khona ho hanela ho bola ho tsoa ho disele e tloaelehileng le oli ea haeteroliki. E ka rarolla bothata ba ho ruruha ha mafura, empa e tlameha ho qojoa ka libeso tse nkhang hamonate le{1}}libaka tsa mocheso tse ka holimo ho 120 degrees .
01
HNBR
Ha e sebetsane le lisebelisoa tse ngata tsa mafura joalo ka peterole le disele, 'me e khona ho mamella maemo a mahareng{{0}ho{1}ho{1}holimo a holimo a ka bang 150 degrees .
02
FKM
E hanyetsana le kutu e nkhang hamonate 'me e khona ho mamella mocheso ho fihlela ho likhato tse 250. E ka rarolla mathata a ho petsoha le ho ruruha a bakoang ke libeso tse senyang haholo.
03
FFKM
E lumellana le mefuta eohle ea mafura, e se nang kotsi ea ho ruruha, le mocheso o phahameng oa ho hanyetsa likhato tse 320. Maemong a feteletseng joalo ka lits'ebetso tsa mafura a sefofane le litiiso tsa peterole ea enjine ea sefofane, e khona ho mamella ho bola ha mafura a fapaneng a khethehileng, ho netefatsa hore ha e lutle.
04
O-Lisebelisoa tse Tikolohong tse Fapaneng tsa Khase
Libaka tse koalang khase li ka aroloa e le tse sa tsitsang, tse senyang le tse tukang. Lisebelisoa tse tloaelehileng li kenyelletsa lisebelisoa tsa semiconductor vacuum, lisebelisoa tsa matla a hydrogen, liphaephe tsa khase ea lik'hemik'hale, le litanka tsa polokelo ea khase.
O-lisebelisa li tobane le mathata a fapaneng libakeng tse fapaneng tsa khase:
• Ho hloleha ho phunyeletsa:Limolek'hule tsa khase tse sa sebetseng li nyane 'me li kenella habonolo ka har'a matrix a rabara, e leng se bakang ho theoha ha khatello ka kamoreng ea tiiso.
• Ho hloleha ha kutu:Likhase tse senyang li sebetsana le rabara ka hydrolysis/oxidation, e lebisang ho senyeha ha thepa.
• Kotsi ea ho phatloha:Likhase tse tukang tse lutlang li ka phatloha ha li pepesehetse malakabe a bulehileng. Hydrogen e ka etsa hore rabara e monye haedrojene, e atolose, kapa e thehe li-microcracks, e fokotsa bophelo ba tiiso.
Ke Khetha O- Sesebelisuoa sefe seo ke Lokelang ho se Khetha?
EPDM
E fana ka coefficient e tlase ea permeability le khanyetso e ntle ea botsofali ba ozone. Sebopeho sa eona se teteaneng sa limolek'hule se fokotsa ho kenella ha khase. Lits'ebetsong tse kang ts'ireletso ea khase ea inert, e ka sebetsana le tahlehelo ea khatello e bakoang ke ho kenella ha khase ea inert.
FKM
E hanyetsana le li-acid tse matla le likhase tsa alkali, e khona ho sebetsana le ho senyeha ha lintho tse bakoang ke likhase tse senyang lits'ebetsong tse kang liphaephe tsa khase ea chlorine le li-valve tsa phekolo ea khase ea asiti limela tsa lik'hemik'hale.
PTFE
E na le khaello ea lik'hemik'hale e matla haholo 'me e khona ho mamella khoholeho ea likhase tse matla tsa oxidizing le mecha ea litaba e senyang haholo, empa e hloka ho kopanngoa le lijari tsa rekere tse kang FKM ho lefella elasticity ea eona e sa lekaneng.
FFKM
Ho kenella ha khase ho tlase haholo, mocheso o matla haholo le ho thibela kutu, e sebelisoa haholo-mesebetsing ea tlhoeko e kang ea semiconductor vacuum chambers le hydrogen fuel cell.
O-Khetho ea selikalikoe Libakeng tse Feteletseng tse Ratang
Hangata{0}tikoloho ea lefatše maemong a indasteri ke "maemo a rarahaneng" a nang le likhatello tse ngata. Ha u khetha O{2}}rings, lintlha tse kang mocheso, medium, khatello, le khohlano li tlameha ho nahanoa ka nako e le 'ngoe.
Maemo a Phahameng{{0}Mocheso le Mafura-a Nang le Tikoloho
Sistimi ea mafura ea enjine le lithapo tsa mafura tsa turbine li na le mocheso o phahameng le ho bola ha mafura. FKM e nang le koae ea PTFE ea khothaletsoa, kaha e hanela ho ruruha ha mafura, e fokotsa likhohlano, 'me e lelefatsa bophelo ba tiiso.
Tikoloho e Phahameng{{0}Mocheso le Khase e Horohang
Lisebelisoa tsa lik'hemik'hale kapa li-hydraulic system tsa aerospace li hlahisa mocheso o phahameng le likhase tse nang le asiti. FFKM rabara e lokela ho khethoa, kaha e kopanya mocheso oa likhato tse 320 le botsitso ba lik'hemik'hale, ho boloka elasticity ea tiiso ka nako e telele.
Tikoloho e Kopantsoeng ea Mafura le Khase
Litikolohong tseo mouoane oa mafura le khase li sebelisanang teng, joalo ka lisebelisoa tsa moea oa mafura, HNBR e fana ka litjeho-tharollo e sebetsang hantle, ho leka-lekanya ho hanyetsa oli le ho se mele.
{{0}tikoloho e phahameng ea khatello le likhohlano tse matla
Ka har'a lisilindara tsa haeteroliki kapa litiiso tse tsamaisanang, O{0}}rings ha ea tlameha ho mamella khatello feela empa hape le ho thibela ho senyeha. Re khothaletsa sebopeho se kopaneng sa FKM le PTFE, se fanang ka matla a holimo le likhohlano tse tlase.
Litlhokomelo Bakeng sa Litikoloho Tse Ling Tse Hlollang
Ntle le maemo a phahameng-mocheso, mafura{1}} le tikoloho e nang le khase, maemo a latelang a boetse a baka mathata ho O-rings, a hlokang khetho e totobalitsoeng ho latela thepa:
• Tikoloho e Tlase{{0}Mocheso:Litsing tsa polar kapa litsamaiso tsa naetrojene tse metsi, mocheso o tlase haholo, o etsa hore rabara e tloaelehileng e thatafale le ho lahleheloa ke elasticity. VMQ le FVMQ li fana ka maemo a bonolo a-thempereichara a tlase, ho boloka tiiso e hloekile.
• Tikoloho e Hlahisang Ozone le UV:Lisebelisoa tsa kantle tse pepeselitsoeng UV le ozone ka nako e telele li na le tšekamelo ea ho phatloha le ho tsofala ha rabara. EPDM le HNBR ha li na ozone le UV-, li eketsa bophelo ba tsona ba ts'ebeletso.
• Asiti e Matla le Metsi a Alkali Media:Litankang tsa polokelo ea lik'hemik'hale le li-reactors, O{0}}rings e tlameha ho mamella ho bola ho acid le alkali. PTFE le FFKM li na le lik'hemik'hale tse nang le lik'hemik'hale, li thibela ho phunyeha le ho ruruha, ho netefatsa litiiso tse tsitsitseng.
• Maemo a Vacuum le a Phahameng-Tikoloho ea Ts'ebetso ea Bohloeki:Semiconductor le ts'ebetso e phahameng-ea bohloeki e hloka phemello e tlase le phallo e tlase. FFKM le FKM e phahameng-li na le limolek'hule tse teteaneng, tse fokotsang ho kenella ha khase le ho netefatsa ts'ireletso ea ts'ebetso.
• Maemo a{{0}a aparoang haholo le a nang le tšusumetso{1}e phahameng:O-rings tse ka har'a lisilindara tsa haeteroliki le mecheng e sebelisanang li ka roaloa habonolo. Ho roala ka PTFE kapa -melano ea FKM/HNBR ho ntlafatsa ho se sebetse hantle le ho lelefatsa bophelo ba ts'ebeletso.
• Libaka tse mongobo le tse chesang:VMQ le FKM li boloka elasticity le botsitso ba sebopeho libakeng tse chesang le tse mongobo, li etsa hore li tšoanelehe ho sebelisoa ka liboiler le liphaephe tsa mouoane.
Qetello
Ha u tobane le maemo a fapaneng a thata a ts'ebetso, ho bohlokoa ho sekaseka mekhoa e ka bang teng ea ho hloleha ha O-rings 'me u khethe O-rings e entsoeng ka thepa e nepahetseng ho netefatsa ts'ebetso ea nako e telele{2}} e tsitsitseng le e ts'epahalang. Ningbo Zhonggao, moetsi ea itlhommeng pele oa li-O{4}}rings tsa tloaelo, o ipabola ka ho etsa-lisebelisoa tsa O{6}} tsa boleng bo holimo, tse iketselitsoeng ho khotsofatsa litlhoko tse fapaneng tsa ho tiisoa. Ka kopo ikutloe u lokolohile hoiteanye le ronabakeng sa litharollo tse ling tsa ho iketsetsa.
