Hav nyob ntawd! Raws li tus neeg muag khoom ntawm graphite thrust bearings, kuv tau txais ib pawg ntawm cov lus nug tsis ntev los no txog cov kev cai lubrication rau cov khoom zoo nkauj no. Yog li, kuv xav tias kuv yuav siv sijhawm ob peb feeb los rhuav tshem koj thiab tshem tawm qhov tsis meej pem.
Ua ntej tshaj, cia peb tham txog dab tsi graphite thrust bearing yog dab tsi thiab nws ua li cas. Lub graphite thrust bearing yog ib hom kabmob uas tau tsim los tswj cov axial loads, uas yog cov khoom thauj uas ua rau tib lub sijhawm. Cov kabmob no yog tsim los ntawm graphite, cov khoom siv uas paub txog nws tus kheej - lubricating zog, kub tsis kam, thiab tsis tshua muaj kev sib txhuam coefficient. Lawv feem ntau siv nyob rau hauv ntau yam kev siv, xws li twj tso kua mis, compressors, thiab turbines.
Tam sim no, tej zaum koj yuav xav tias, "Yog tias graphite yog tus kheej - lubricating, vim li cas kuv thiaj li yuav tsum txhawj txog lubrication?" Zoo, thaum graphite muaj qee qhov zoo ntawm lubricating zoo, tseem muaj cov xwm txheej uas ntxiv lubrication tuaj yeem pab tau.
Vim Li Cas Ntxiv Lubrication?
Ib qho ntawm cov laj thawj tseem ceeb los txiav txim siab ntxiv lubrication yog txo qhov hnav thiab tsim kua muag ntawm cov kabmob. Txawm hais tias graphite yog cov khoom siv ruaj khov, kev sib txhuam tas li tseem tuaj yeem ua rau nws degrade dhau sijhawm. Los ntawm kev siv cov roj nplua nyeem, koj tuaj yeem tsim cov yeeb yaj kiab nyias ntawm cov kabmob, uas yuav pab txo qis kev sib cuag ncaj qha thiab yog li txo tus nqi hnav.
Lwm qhov laj thawj yog txhawm rau txhim kho kev ua haujlwm ntawm cov kabmob hauv cov xwm txheej hnyav. Piv txwv li, nyob rau hauv siab - kub los yog siab - daim ntawv thov ceev, tus kheej - lubricating zog ntawm graphite tej zaum yuav tsis txaus kom cov kabmob khiav zoo. Lub lubricant tsim nyog tuaj yeem txhim kho cov kabmob muaj peev xwm los daws cov teeb meem nyuaj no, kom ntseeg tau tias kev ua haujlwm ruaj khov.
Hom Lubricants rau Graphite Thrust Bearings
Ntau hom roj nplua nyeem tuaj yeem siv nrog graphite thrust bearings, txhua tus nrog nws tus kheej cov txheej txheem ntawm qhov zoo thiab qhov tsis zoo.
Roj
Roj yog ib qho kev xaiv nrov rau lubricating graphite thrust bearings. Nws yooj yim rau kev thov thiab muab lub sijhawm ntev - lubrication. Roj muaj cov thickener, uas yuav pab kom nws nyob rau hauv qhov chaw thiab tiv thaiv raug nyem tawm ntawm cov kabmob. Muaj ntau hom roj muaj nyob, xws li lithium - raws, calcium - raws, thiab roj hluavtaws.
Lithium - roj raws li tau siv dav vim tias lawv muaj kev ua haujlwm zoo tshaj qhov kub thiab txias thiab muaj dej tsis zoo. Calcium - cov roj raws li paub txog lawv cov kev tiv thaiv corrosion zoo. Synthetic greases, ntawm qhov tod tes, yog tsim los ua tau zoo nyob rau hauv huab cua txias, xws li kub los yog siab loads.
Roj
Roj yog lwm qhov kev xaiv rau lubricating graphite thrust bearings. Nws muab cov cua kub zoo dua li roj, uas tuaj yeem ua tau zoo nyob rau hauv siab - ceev lossis siab - daim ntawv thov kub. Muaj ntau hom roj, nrog rau cov roj ntxhia, roj hluavtaws, thiab cov roj zaub.
Cov roj ntxhia yog muab los ntawm cov roj av thiab tsis tshua muaj nqi. Lawv muaj zoo lubricating zog tab sis tej zaum yuav tsis haum rau siv nyob rau hauv huab mob. Cov roj hluavtaws, ntawm qhov tod tes, yog tsim los kom muaj cov yam ntxwv ua tau zoo, xws li oxidation zoo dua thiab qis viscosity ntawm qhov kub thiab txias. Cov roj zaub yog ib qho kev xaiv zoo rau ib puag ncig, tab sis lawv yuav muaj kev txwv tsis pub ua haujlwm hauv siab - daim ntawv thov kub.
Daim Ntawv Thov Lubrication
Kev siv cov roj nplua nyeem kom raug yog qhov tseem ceeb rau kev ua kom nws cov txiaj ntsig zoo. Thaum siv roj, nws yuav tsum tau thov tusyees rau cov kabmob nto. Koj tuaj yeem siv rab phom roj los yog txhuam kom siv cov roj. Nco ntsoov tsis txhob dhau - roj cov kabmob, vim qhov no tuaj yeem ua rau nws dhau los thiab txo nws txoj haujlwm.
Yog tias koj siv roj, koj tuaj yeem siv lub tshuab lubrication, xws li cov roj da dej lossis cov roj pos huab. Cov roj da dej cuam tshuam nrog submerging cov kabmob nyob rau hauv cov roj reservoir, thaum cov roj pos huab cua txau cov roj zoo rau ntawm cov kabmob.
Kev txiav txim siab rau kev siv sib txawv
Cov kev xav tau lubrication rau graphite thrust bearings tuaj yeem sib txawv nyob ntawm daim ntawv thov. Piv txwv li, hauv daim ntawv thov kev ua zaub mov, koj yuav tsum siv cov roj nplua nyeem uas yog zaub mov - qib thiab muaj kev nyab xeeb rau kev sib cuag nrog zaub mov. Hauv kev siv aerospace, cov roj nplua nyeem yuav tsum tuaj yeem tiv taus qhov kub thiab txias.
Tsis tas li ntawd, kev khiav hauj lwm tej yam kev mob, xws li ceev, load, thiab kub, kuj plays lub luag hauj lwm nyob rau hauv kev txiav txim rau lub lubricant tsim nyog. Rau siab - daim ntawv thov ceev, lub lubricant uas tsis muaj viscosity feem ntau yog nyiam, vim nws tuaj yeem ntws tau yooj yim dua ntawm cov kabmob. Rau siab - load daim ntawv thov, lub lubricant nrog siab - load - nqa peev yog tsim nyog.
Yam khoom Graphite
Yog tias koj txaus siab rau lwm cov khoom siv graphite, peb kuj muab Graphite Saw Hniav thiab Graphite Thermal Sheet. Cov khoom no, zoo li peb cov graphite thrust bearings, yog ua los ntawm siab - graphite zoo thiab yog tsim los ua kom tau raws li qhov xav tau ntawm ntau yam kev lag luam. Thiab yog tias koj nyob hauv kev txiav thiab sib tsoo ua lag luam, peb cov cuab yeej pob zeb diamond tej zaum yuav yog qhov koj tab tom nrhiav.
Xaus
Hauv kev xaus, thaum graphite thrust bearings muaj nws tus kheej - lubricating zog, ntxiv lubrication tuaj yeem muab cov txiaj ntsig tseem ceeb ntawm kev txo qis hnav, txhim kho kev ua haujlwm, thiab ua kom muaj kev ruaj ntseg. Kev xaiv ntawm cov roj nplua nyeem nyob ntawm cov yam ntxwv xws li daim ntawv thov, kev ua haujlwm, thiab kev xav tau ib puag ncig.
Yog tias koj nyob hauv kev lag luam rau graphite thrust bearings lossis muaj lus nug txog lawv cov kev xav tau lubrication, tsis txhob yig mus cuag. Peb nyob ntawm no los pab koj nrhiav cov kev daws teeb meem zoo tshaj plaws rau koj cov kev xav tau. Txawm hais tias koj yog ib tug me me - scale chaw tsim tshuaj paus lossis ib lub lag luam loj, peb tau txais kev txawj ntse thiab cov khoom los txhawb koj txoj haujlwm. Yog li, cia peb pib sib tham thiab saib seb peb tuaj yeem ua haujlwm ua ke kom tau raws li koj qhov kev xav tau ntawm cov kabmob thiab lubrication.
Cov ntaub ntawv
"Bearing Lubrication Handbook" los ntawm SKF
"Mechanical Design Handbook" los ntawm Robert C. Juvinall thiab Kurt M. Marshek