Ntsib qhov kub thiab txias heev, tshuaj lom neeg, lossis kev sib txhuam tsawg? Kawm paub seb cov foob pob PTFE uas muaj zog los ntawm lub caij nplooj ntoos hlav (Variseals) ua haujlwm li cas thiab vim li cas lawv thiaj yog qhov kev daws teeb meem zoo rau cov ntawv thov uas xav tau ntau hauv kev tsav dav hlau, tsheb, thiab kev tsim khoom.
Kev Taw Qhia: Cov Kev Txwv ntawm Kev Tsim Kho ntawm Elastomeric Seals
Hauv kev tsim kho ua haujlwm siab, feem ntau qhov sib khi yog qhov txuas tseem ceeb uas txiav txim siab qhov kev ntseeg tau ntawm lub kaw lus. Txawm hais tias cov roj hmab foob zoo li O-rings ua haujlwm tau zoo hauv ntau daim ntawv thov, lawv ncav cuag lawv cov kev txwv thaum ntsib nrog qhov kub thiab txias heev, cov tshuaj lom neeg hnyav, kev txav mus los, lossis kev xav tau kev sib txhuam tsawg. Cov teeb meem no xav tau kev daws teeb meem uas sib xyaw cov khoom siv zoo tshaj plaws ntawm cov polymers siab heev nrog lub zog sib khi sib xws.
Qhov no yog thaj chaw ntawm lub foob uas muaj zog rau lub caij nplooj ntoos hlav (feem ntau hu ua Variseal lossis Spring Seal). Tsab xov xwm no muab kev nkag siab tob txog kev ua haujlwm ntawm lub foob no, cov teeb meem tseem ceeb uas nws daws tau, thiab cov kev xav tsim qauv tseem ceeb rau cov engineers uas teev cov foob rau cov chaw nyuaj.
1. Lub Ntsiab Cai Tseem Ceeb: Kev Sib Koom Tes ntawm Caij Nplooj Ntoos Hlav thiab Polymer
Lub foob uas muaj lub caij nplooj ntoos hlav yog ib lub kaw lus uas muaj ob lub Cheebtsam uas ua haujlwm tau zoo:
Lub Tsho Polymer: Feem ntau yog lub hau foob U-puab uas ua los ntawm PTFE (Teflon®) lossis lwm yam polymers ua tau zoo xws li PEEK lossis UHMWPE. Lub tsho no muab qhov sib txuas tseem ceeb, siv cov khoom siv tshuaj lom neeg tsis muaj zog, qhov kub thiab txias dav, thiab coefficient ntawm kev sib txhuam qis heev.
Lub Caij Nplooj Ntoos Hlav Ua Kom Muaj Zog: Lub caij nplooj ntoos hlav helical, feem ntau yog ua los ntawm cov hlau tsis xeb lossis cov khoom siv ua tau zoo xws li Elgiloy®, nyob hauv U-channel ntawm lub tsho.
Lub tshuab sealing zoo heev:
1. Lub caij nplooj ntoos hlav muab lub zog radial tas li, uas tau txiav txim siab ua ntej, thawb lub di ncauj kaw ntawm lub tsho tiv thaiv lub qhov lossis lub tsev (phab ntsa qog).
2. Thaum lub kaw lus nias, nws ua haujlwm rau ntawm lub foob, ua rau lub zog nias ntawm daim di ncauj nce ntxiv rau ntawm qhov chaw sib txuas. Qhov no tsim kom muaj lub foob ruaj khov thiab muaj zog siab.
3Lub caij nplooj ntoos hlav lub luag haujlwm tseem ceeb yog los them rau cov khoom siv hnav (kev sib txhuam) thiab tswj lub zog sib khi txawm tias muaj qhov tsis sib xws me me, qhov tsis sib xws, lossis qhov hloov pauv ntawm qhov kub thiab txias. Qhov no ua kom muaj kev ua tau zoo thoob plaws lub neej ntawm lub foob.
2. Cov Teeb Meem Tseem Ceeb ntawm Daim Ntawv Thov thiab Yuav Ua Li Cas Cov Seals Uas Muaj Zog Rau Lub Caij Nplooj Ntoos Hlav daws lawv
Cov thev naus laus zis no tau teev tseg los daws cov teeb meem tshwj xeeb thiab kim heev:
Kev Sib Tw: Kub Heev thiab PTFE Txias Ntsws.
Xwm txheej: Kaw cov kua dej cryogenic xws li kua nitrogen (-200°C) lossis cov kua hydraulic kub siab (>200°C).
Kev Dais Teeb Meem: PTFE tswj nws cov khoom thoob plaws ntau qhov kub thiab txias uas elastomers tsis ua haujlwm. Txawm li cas los xij, PTFE feem ntau "ntws txias" - deformation nyob rau hauv qhov hnyav tas li. Lub caij nplooj ntoos hlav sab hauv tiv thaiv qhov kev nkag mus no, tswj qhov siab ntawm daim di ncauj thiab tiv thaiv kev ua tsis tiav ntawm lub foob dhau sijhawm.
Kev Sib Tw: Cov Chaw Muaj Tshuaj Lom Zem lossis Plasma Uas Ua Rau Muaj Kev Kub Ntxhov.
Xwm txheej: Kaw cov kuab tshuaj muaj zog, cov kua qaub, cov hauv paus, lossis hauv cov khoom siv ua semiconductor wafer nrog cov plasmas corrosive.
Kev Dais Teeb Meem: PTFE tsis muaj zog tshuaj lom neeg, muab kev tiv thaiv zoo rau ntau yam tshuaj lom neeg. Qhov no ua rau lub caij nplooj ntoos hlav-energized seals zoo tagnrho rau kev ua tshuaj lom neeg, tshuaj, thiab semiconductor daim ntawv thov.
Kev Sib Tw: Cov Ntawv Thov Dynamic nrog Qis / Tsis Muaj Lubrication.
Xwm txheej: Cov ncej tig ceev ceev hauv cov khoom siv qib zaub mov, chav huv, lossis cov ntawv thov uas tsis xav tau cov roj nplua nyeem.
Kev Dais Teeb Meem: Qhov lubricity ntuj ntawm PTFE tso cai rau cov foob no ua haujlwm nrog kev sib txhuam thiab kev hnav tsawg kawg nkaus, txawm tias nyob rau hauv qhov chaw qhuav lossis me ntsis lubricated. Qhov no txo kev siv hluav taws xob thiab kev tsim cua sov.
Kev Sib Tw: Kev Ntseeg Tau Mus Ntev Nrog Kev Txij Nkawm Tsawg Kawg Nkaus.
Xwm txheej: Cov ntsaws ruaj ruaj rau hauv qhov chaw uas nkag tsis tau lossis hauv cov ntawv thov uas lub sijhawm tsis tau npaj tseg kim heev.
Kev Dais Teeb Meem: Lub zog ntawm lub caij nplooj ntoos hlav tas li them rau qhov hnav ntawm daim di ncauj, ua rau lub foob "kho nws tus kheej." Qhov no txhais tau tias lub sijhawm pabcuam ntev dua thiab lub sijhawm nruab nrab ntawm kev ua tsis tiav (MTBF) zoo dua, txo tag nrho cov nqi ntawm kev muaj.
3. Kev Tsim Qauv Tseem Ceeb thiab Kev Xaiv Khoom Siv rau Kev Ua Haujlwm Zoo Tshaj Plaws
Kev xaiv lub foob uas muaj zog rau lub caij nplooj ntoos hlav tsis yog ib qho yooj yim; nws yuav tsum tau xav txog ntau yam:
Cov Khoom Siv Tsho:
PTFE nkauj xwb: Tus qauv rau feem ntau cov tshuaj lom neeg thiab kev siv kub.
PTFE uas puv (piv txwv li, nrog iav, carbon, graphite, tooj dag): Siv los txhim kho kev hnav tsis kam, txo qhov dej txias, txhim kho kev ua kom sov, lossis ua kom tawv.
Lwm Cov Polymers (PEEK, UHMWPE): Xaiv rau cov kev xav tau tshwj xeeb xws li lub zog siab dua (PEEK) lossis kev tiv taus kev sib txhuam zoo dua (UHMWPE).
Hom Caij Nplooj Ntoos Hlav thiab Khoom Siv:
Lub Zog Caij Nplooj Ntoos Hlav: Cov caij nplooj ntoos hlav uas muaj lub zog sib dua, nruab nrab, lossis hnyav raug xaiv raws li qhov siab, qhov ceev, thiab kev sib txhuam uas xav tau.
Cov Khoom Siv Caij Nplooj Ntoos Hlav:
Hlau Tsis Xeb (302, 316): Rau kev tiv taus xeb dav dav.
Elgiloy®/Hastelloy®: Rau cov chaw uas xav tau kev kub ntxhov ntau tshaj plaws uas xav tau kev tiv taus zoo rau cov qhov av, qhov kub siab, thiab cov kua dej uas muaj zog xws li dej ntsev.
Kev Ntsuas Qhov Ntev: Tus qauv U-cup tuaj yeem ua kom zoo rau kev sib hloov, sib pauv, lossis sib khi zoo li qub. Cov yam xws li lub kaum sab xis ntawm daim di ncauj, qhov siab ntawm pob taws, thiab qhov tuab ntawm lub tsho yog qhov tseem ceeb thiab txiav txim siab zoo tshaj plaws los ntawm kev sab laj nrog tus neeg tsim khoom paub.
4. Qhov Txawv ntawm Kev Tsim Khoom: Vim Li Cas Kev Ntsuas Qhov Tseeb Tseem Ceeb
Qhov kev ua tau zoo ntawm lub caij nplooj ntoos hlav-energized foob tsuas yog ua tiav los ntawm kev tsim khoom zoo heev. Cov caij nplooj ntoos hlav tsis sib xws lossis cov tsho tsis zoo ua rau ua tsis tiav ua ntej lub sijhawm. Cov ntsiab lus tseem ceeb ntawm kev tsim khoom suav nrog:
Kev Siv Lub Tshuab Ua Kom Tiav Ntawm Cov Tsho: Lub tsho PTFE yuav tsum tau ua kom tiav, tsis yog tsuas yog extruded xwb, kom ua tiav qhov kev kam rau siab thiab qhov ua tiav zoo dua ntawm daim di ncauj sealing. Daim di ncauj du thiab sib xws yog qhov tseem ceeb rau kev sib txhuam tsawg thiab kev kaw zoo.
Kev Sib Thooj ntawm Lub Caij Nplooj Ntoos Hlav: Lub caij nplooj ntoos hlav yuav tsum tau dov raws li qhov qhia meej, kom ntseeg tau tias muaj kev faib zog sib npaug thoob plaws lub voj voog ntawm lub foob. Kev sib thooj ntawm ib pawg mus rau ib pawg tsis tuaj yeem sib tham tau.
Kev Tswj Xyuas Zoo: Txhua pawg khoom tsim tawm yuav tsum tau kuaj xyuas qhov loj me thiab daim ntawv pov thawj khoom siv. Kev taug qab los ntawm cov khoom siv raw mus rau cov khoom tiav ua rau muaj kev ntseeg siab tias zoo thiab ua raws li txoj cai (piv txwv li, nrog ROHS, REACH).
Xaus Lus: Qhia Txog Lub Cim Rau Qhov Tseeb Rau Kev Ntseeg Siab Tshaj Plaws
Cov foob pob hluav taws xob uas muaj lub caij nplooj ntoos hlav yog cov kev daws teeb meem uas tau ua pov thawj thiab muaj kev ntseeg siab rau cov ntawv thov uas cov elastomers txheem tsis ua haujlwm. Lawv lub peev xwm ua haujlwm hauv cov xwm txheej hnyav thaum txo cov nqi kho mus sij hawm ntev ua rau lawv yog kev nqis peev hauv kev tsim kho vaj tse ntse.
Kev vam meej nyob ntawm kev nkag siab txog cov kev xav tau tshwj xeeb ntawm daim ntawv thov thiab kev koom tes nrog tus neeg muag khoom uas paub txog cov yam ntxwv ntawm kev tshawb fawb txog cov ntaub ntawv thiab kev tsim khoom raug.
Npaj txhij los daws koj cov teeb meem kev sib khi uas nyuaj tshaj plaws?
Tiv tauj peb los tham txog koj daim ntawv thov.Peb pab neeg ua haujlwm txawj ntse tuaj yeem muab cov lus qhia raws li cov ntaub ntawv, cov qauv tsim tshwj xeeb, thiab cov qauv piv txwv kom ntseeg tau tias koj txoj haujlwm ua tiav.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-18-2025