Koj puas tau xav txog qhov sib txawv ntawm cov pa roj carbon thiabsilicon carbide mechanical sealsHauv tsab blog no, peb yuav kawm txog cov yam ntxwv thiab kev siv ntawm txhua yam khoom. Thaum kawg, koj yuav nkag siab meej txog thaum twg yuav tsum xaiv cov pa roj carbon lossis silicon carbide rau koj cov kev xav tau sealing, ua rau koj muaj peev xwm txiav txim siab tau zoo hauv koj cov haujlwm.
Cov Khoom ntawm Cov Pa roj carbon Seal Faces
Cov pa roj carbon yog cov khoom siv feem ntau siv raucov ntsej muag foob kho tshuabvim nws cov yam ntxwv tshwj xeeb. Nws muaj cov yam ntxwv zoo heev rau kev ua kom lubrication, uas pab txo qhov kev sib txhuam thiab kev hnav ntawm cov ntsej muag foob thaum lub sijhawm ua haujlwm. Cov pa roj carbon kuj ua rau muaj kev ua haujlwm zoo thermal conductivity, uas ua rau nws yaj cov cua sov tau zoo thiab tiv thaiv kom tsis txhob muaj qhov kub ntau dhau ntawm qhov sib txuas sealing.
Lwm qhov zoo ntawm cov roj carbon seal ntsej muag yog lawv lub peev xwm los ua kom haum rau qhov tsis zoo me me lossis qhov tsis sib xws ntawm qhov chaw sib phim. Qhov kev hloov pauv no ua kom lub foob kaw ruaj khov thiab txo qhov xau. Carbon kuj tiv taus ntau yam tshuaj lom neeg, ua rau nws tsim nyog siv rau hauv ntau yam kev siv hauv kev lag luam.
Cov Khoom ntawm Silicon Carbide Seal Faces
Silicon carbide (SiC) yog lwm qhov kev xaiv nrov rau cov ntsej muag foob vim nws qhov tawv thiab tiv taus kev hnav. Cov ntsej muag foob SiC tuaj yeem tiv taus cov xwm txheej ua haujlwm hnyav, suav nrog kev siab siab, kub, thiab cov khoom siv abrasive. Cov khoom siv thermal conductivity siab pab tshem tawm cua sov, tiv thaiv kev hloov pauv thermal thiab tswj kev ruaj khov ntawm lub foob.
Cov ntsej muag ntawm SiC kuj muaj kev tiv thaiv tshuaj lom neeg zoo heev, ua rau lawv tsim nyog siv rau hauv cov chaw muaj xeb. Qhov du ntawm SiC txo qhov kev sib txhuam thiab kev hnav, ua rau lub neej ntawm lub foob pob hluav taws xob ntev dua. Tsis tas li ntawd, SiC lub modulus siab ntawm elasticity muab kev ruaj khov ntawm qhov ntev, ua kom ntseeg tau tias cov ntsej muag ntawm lub foob tseem tiaj tus thiab sib luag thaum lub sijhawm ua haujlwm.
Qhov Sib Txawv Ntawm Carbon thiab Silicon Carbide
Kev Sib xyaw thiab Qauv
Cov roj hmab foob pob ua los ntawm cov pa roj carbon yog ua los ntawm graphite, ib hom roj carbon uas paub txog nws cov khoom siv roj thiab tiv taus cua sov thiab tshuaj lom neeg. Feem ntau graphite yog impregnated nrog resin lossis hlau los txhim kho nws cov khoom siv kho tshuab.
Silicon carbide (SiC) yog ib yam khoom siv ceramic uas tawv thiab tsis yooj yim hnav uas muaj silicon thiab carbon. Nws muaj cov qauv crystalline uas ua rau nws muaj zog heev, thermal conductivity, thiab tshuaj lom neeg ruaj khov.
Kev Nyuaj Siab thiab Kev Hnav Tsis Taus
Silicon carbide nyuaj dua li carbon, nrog Mohs hardness ntawm 9-9.5 piv rau 1-2 rau graphite. Qhov hardness siab no ua rau SiC tiv taus kev hnav abrasive heev, txawm tias nyob rau hauv cov ntawv thov uas nyuaj nrog cov khoom siv abrasive.
Cov roj hmab carbon, txawm hais tias mos dua, tseem tiv taus kev hnav zoo hauv qhov chaw tsis muaj kev sib txhuam. Qhov xwm txheej ntawm graphite uas nws tus kheej lubricating pab txo qhov kev sib txhuam thiab kev hnav ntawm cov ntsej muag ntawm lub foob.
Kev Tiv Thaiv Kub
Ob qho tib si carbon thiab silicon carbide muaj cov khoom kub zoo heev. Cov foob carbon feem ntau tuaj yeem ua haujlwm ntawm qhov kub txog li 350 ° C (662 ° F), thaum cov foob silicon carbide tuaj yeem tiv taus qhov kub siab dua, feem ntau tshaj 500 ° C (932 ° F).
Lub thermal conductivity ntawm silicon carbide siab dua li ntawm carbon, uas tso cai rau SiC seals kom dissipate cua sov zoo dua thiab tswj qhov kub ua haujlwm qis dua ntawm qhov sealing interface.
Kev Tiv Thaiv Tshuaj
Silicon carbide tsis muaj zog tshuaj lom neeg thiab tiv taus kev tawm tsam los ntawm feem ntau cov kua qaub, cov hauv paus, thiab cov kuab tshuaj. Nws yog ib qho kev xaiv zoo heev rau kev kaw cov xov xwm uas muaj zog heev lossis cov xov xwm uas ua rau muaj kev kub ntxhov.
Cov pa roj carbon kuj muaj kev tiv thaiv tshuaj lom neeg zoo, tshwj xeeb tshaj yog rau cov organic compounds thiab cov kua qaub thiab cov hauv paus uas tsis yog oxidizing. Txawm li cas los xij, nws yuav tsis haum rau cov chaw oxidizing muaj zog lossis cov ntawv thov nrog cov xov xwm pH siab.
Tus nqi thiab qhov muaj
Cov roj hmab sib xyaw ua ke uas muaj cov pa roj carbon feem ntau pheej yig dua li cov roj hmab sib xyaw ua ke uas muaj cov roj hmab silicon carbide vim tias cov khoom siv raw pheej yig dua thiab cov txheej txheem tsim khoom yooj yim dua. Cov roj hmab sib xyaw ua ke uas muaj cov pa roj carbon muaj ntau thiab tuaj yeem tsim tau ntau yam qib thiab kev teeb tsa.
Cov ntsaws ruaj ruaj silicon carbide yog cov khoom tshwj xeeb dua thiab feem ntau tuaj ntawm tus nqi siab dua. Kev tsim cov khoom SiC zoo xav tau cov txheej txheem tsim khoom siab heev thiab kev tswj hwm zoo nruj, ua rau tus nqi nce ntxiv.
Thaum Twg Yuav Siv Cov Khoom Siv Carbon Seal
Cov ntsej muag foob carbon yog qhov zoo tagnrho rau cov ntawv thov uas muaj qhov siab thiab kub qis mus rau nruab nrab. Lawv feem ntau siv rau hauv cov twj tso kua dej, cov khoom sib tov, thiab cov khoom sib xyaw uas cov khoom siv sib khi tsis yog abrasive lossis corrosive heev. Cov foob carbon kuj tseem tsim nyog rau kev sib khi cov kua uas muaj cov khoom tsis zoo, vim tias cov khoom siv carbon nws tus kheej muab cov roj nplua nyeem.
Hauv cov ntawv thov uas muaj ntau zaus pib-nres lossis qhov twg lub qhov (shaft) muaj kev txav mus los axial, cov pa roj carbon seal ntsej muag tuaj yeem ua raws li cov xwm txheej no vim lawv cov khoom siv lubricating thiab muaj peev xwm ua raws li qhov tsis sib xws me ntsis hauv qhov chaw sib phim.
Thaum Twg Yuav Tsum Siv Silicon Carbide Seal
Cov ntsej muag foob silicon carbide yog qhov nyiam siv rau hauv cov ntawv thov uas muaj kev kub siab, kub, thiab cov khoom siv abrasive lossis corrosive. Lawv feem ntau siv rau hauv cov txheej txheem kev lag luam uas nyuaj, xws li kev tsim roj thiab roj av, kev ua tshuaj lom neeg, thiab kev tsim hluav taws xob.
Cov foob SiC kuj tsim nyog rau kev kaw cov kua dej ntshiab siab, vim tias lawv tsis ua rau cov xov xwm raug kaw. Hauv cov ntawv thov uas cov xov xwm kaw tsis muaj cov khoom siv lubricating tsis zoo, SiC tus coefficient qis ntawm kev sib txhuam thiab kev tiv thaiv kev hnav ua rau nws yog qhov kev xaiv zoo heev.
Thaum lub foob pob hluav taws xob raug kev hloov pauv ntau zaus lossis kev kub ntxhov, SiC qhov kev ua tau zoo ntawm thermal conductivity thiab dimensional stability pab tswj kev ua haujlwm ntawm lub foob pob thiab lub neej ntev. Tsis tas li ntawd, SiC seals yog qhov zoo tagnrho rau cov ntawv thov uas xav tau lub neej ntev thiab kev saib xyuas tsawg kawg nkaus vim lawv qhov ruaj khov thiab tiv taus kev hnav.
Cov Lus Nug Feem Ntau
Cov khoom siv foob twg feem ntau siv?
Cov pa roj carbon feem ntau siv rau hauv cov khoom siv kho tshuab vim nws cov nqi qis dua thiab kev ua tau zoo txaus hauv ntau daim ntawv thov.
Cov roj hmab carbon thiab silicon carbide puas siv tau sib pauv tau?
Qee zaum, yog, tab sis nws nyob ntawm qhov xav tau ntawm daim ntawv thov tshwj xeeb, xws li qhov kub thiab txias, siab, thiab kev sib xws ntawm cov kua dej.
Xaus lus
Thaum xaiv cov roj hmab sib khi ua los ntawm carbon thiab silicon carbide, xav txog cov kev cai tshwj xeeb rau kev siv. Silicon carbide muaj qhov nyuaj thiab tiv taus tshuaj lom neeg, thaum carbon muab kev khiav dej qhuav zoo dua.
Lub sijhawm tshaj tawm: Lub Xya Hli-15-2024