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Kev Xaiv thiab Cov Tswv Yim Siv Rau Cov Bearings Dov Hauv Cov Kev Ua Haujlwm Tshwj Xeeb

 

Hauv cov txheej txheem kev lag luam niaj hnub no, kev siv covdov bearingstau ntev nthuav dav dhau ntawm cov ntawv thov kis tau tus mob ib txwm muaj, txuas ntxiv mus rau cov xwm txheej tshwj xeeb xws li kub thiab qis, thauj khoom siab, xeb, nqus tsev, thiab kev co hnyav. Cov kabmob txheem feem ntau tawm tsam kom ua tau raws li cov kev cai ua haujlwm hnyav no, xav tau kev txhim kho hauv kev tsim khoom siv, kev tsim qauv, kev siv tshuab lubrication, thiab kev daws teeb meem sealing kom ua tiav kev txhawb nqa txhim khu kev qha.

 

Kub heevCov chaw ib puag ncig yog ib txwm muaj nyob rau hauv metallurgy, iav tsim, thiab turbomachinery, qhov twg bearings yuav tsum ua haujlwm tas li saum 200 ° C. Nyob rau hauv cov xwm txheej no, qhov kev pheej hmoo ntawm kev mos ntawm cov hlau bearing ib txwm nce ntxiv, thiab cov tawb yog qhov yooj yim rau kev puas tsuaj. Cov kev daws teeb meem feem ntau siv cov hlau kub-tempered (xws li SUJ2-HT), cov hlau-hardened (xws li JIS-SCM420H), lossis cov hlau tiv taus cua sov (xws li M50 thiab Inconel 718), ua ke nrog cov khoom siv ceramic dov (Si₃N₄) los txo qhov thermal nthuav dav thiab qhov hnyav. Rau kev lubrication, cov txheej txheem roj nplaum khoom ua haujlwm siab (xws li MoS₂ thiab DLC) lossis cov roj kub kub feem ntau siv. Hauv qee kis, cov txheej txheem txias roj-cua txawm tias siv. Hauv cov chaw cryogenic lossis cryogenic, xws li cov twj tso kua roj liquefied natural gas (LNG) thiab cov txheej txheem spacecraft propulsion, cov khoom siv embrittlement thiab cov roj nplaum solidification yog cov teeb meem loj. Cov kabmob feem ntau yog ua los ntawm cov hlau tsis xeb austenitic (xws li cryogenically kho AISI 440C) lossis cov hlau nickel-based, lubricated nrog cov roj ester qis-viscosity lossis perfluoropolyether (PFPE) lubricants kom ntseeg tau tias muaj kev ua haujlwm zoo txawm tias nyob rau qhov kub qis dua -196 ° C.

 

Rau cov chaw hnyav thiab muaj kev cuam tshuam, xws li cov tshuab mining, cov tshuab dov, thiab cov gearbox loj, cov bearings xav tau kev rigidity siab heev thiab lub neej qaug zog.Ob chav kab cylindrical roller bearings, plaub-kab tapered roller bearings, los yogcov kabmob kheej kheejfeem ntau siv rau hauv cov ntawv thov no. Lub peev xwm thauj khoom tau txhim kho los ntawm kev ua kom zoo dua cov qauv roller, kev tswj hwm kev thauj khoom ua ntej, thiab kev kho kom zoo dua ntawm qhov chaw xws li carbonitriding.

 

Hauv cov chaw muaj xeb, xws li cov twj siv tshuaj lom neeg thiab cov khoom siv kho dej hiav txwv, cov hlau bearings ib txwm muaj xeb yooj yim. Cov kev daws teeb meem suav nrog cov hlau tsis xeb (xws li X65Cr13 thiab 1.4122),cov kabmob ceramic hybrid, lossis cov txheej txheem tiv thaiv corrosion (xws li electrophoresis lossis PVD txheej) ntawm cov nplhaib sab hauv thiab sab nraud, ua ke nrog cov qauv sealing tag nrho (xws li cov roj hmab sib cuag lossis cov hlau labyrinth seals) kom cais cov xov xwm nkag mus.

 

Tsis tas li ntawd xwb, nyob rau hauv cov ntawv thov ceev ceev xws li cov spindles hluav taws xob ceev ceev thiab cov compressors centrifugal, cov bearings yuav tsum sib npaug sib npaug ntawm kev sib txhuam qis, kev tsim cua sov tsawg, thiab kev ruaj khov dynamic.Angular contact pob bearings(tshwj xeeb tshaj yog cov uas muaj cov pob ceramic ua ntej lawm) tau dhau los ua qhov kev xaiv tseem ceeb, ua ke nrog roj-cua lubrication lossis tshuaj tsuag txias thev naus laus zis kom tswj tau qhov kub nce siab.

 

Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias kev xaiv cov kabmob rau cov xwm txheej tshwj xeeb tsis tuaj yeem cia siab rau cov qauv txheem xwb; yuav tsum muaj kev ntsuam xyuas raws li cov xwm txheej ua haujlwm tiag tiag, suav nrog cov khoom thauj, kev hloov pauv ceev, kev teeb tsa, kev ua yuam kev sib dhos, thiab lub sijhawm txij nkawm. Muaj ntau daim ntawv thov siv lub tswv yim ntawm "kev tsim cov kabmob," qhov twg cov chaw tsim khoom muab kev tsim qauv tshwj xeeb, kev saib xyuas kev sib xyaw ua ke, thiab txawm tias cov kev pabcuam tag nrho lub neej.

 

Raws li cov khoom siv hauv kev lag luam txhim kho mus rau qhov ua tau zoo, lub neej ntev thiab tsis tas yuav saib xyuas, cov kabmob dov rau cov xwm txheej ua haujlwm tshwj xeeb tab tom hloov pauv mus rau cov ntaub ntawv sib xyaw, cov qauv ntse thiab kev sib xyaw ua ke, txuas ntxiv muab kev txhawb nqa tseem ceeb rau kev ua haujlwm ruaj khov ntawm cov khoom siv hauv cov chaw ib puag ncig hnyav.

Yog tias koj xav paub ntau ntxiv txog cov ntaub ntawv ntawm cov kabmob, thov hu rau peb:

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