Txog li 40 feem pua ​​​​ntawm cov zaub qoob loo tuaj yeem mus pov tseg vim qhov kev xav zoo nkauj ntawm qee lub khw muag khoom loj.Txawm hais tias cov zaub mov tsis zoo yuav tsis yog qhov pom kev zoo siab tshaj plaws, nws muaj cov khoom noj muaj txiaj ntsig zoo ib yam li nws cov khoom noj zoo kawg nkaus.

Kev puas tsuaj ntawm cov kabmob tuaj yeem siv tau ntau yam, los ntawm kev sib tw hauv kev sib tw, hnav los ntawm kev ua haujlwm tsis zoo, kev xeb vim yog cov tshuaj hnyav rau cov cim tsis tseeb brinelling tshwm sim los ntawm kev co zoo li qub.Thaum muaj kev ntxhov siab ntawm qhov chaw tuaj yeem ua rau muaj teeb meem tshwm sim xws li kub dhau, nce suab nrov, nce kev vibration lossis ntau lub zog txav, tsis yog txhua qhov kev coj tus kheej sab nraud taw qhia rau kev cuam tshuam hauv lub tshuab ua haujlwm.

Corrosion yog ib qho tshwm sim tshwm sim thiab ib hom kab mob ntawm kev puas tsuaj uas offshore roj thiab roj cog cov thawj coj yuav tsum sib cav nrog.Muaj kaum daim ntawv tseem ceeb ntawm corrosion, tab sis bearing corrosion feem ntau poob rau hauv ob pawg dav - noo noo corrosion los yog kev sib txhuam corrosion.Cov qub yog ib puag ncig tshwj xeeb, tab sis tuaj yeem tshwm sim ntawm txhua yam ntawm cov kabmob, tsim kom muaj kev ceeb toom oxide txheej raws li cov tshuaj tiv thaiv nrog cov hlau nto.

Piv txwv li, nyob rau hauv offshore mining, bearings feem ntau raug rau ya raws los yog me ntsis alkalinity vim lawv kev sib cuag nrog dej hiav txwv.Kev xeb me me tuaj yeem ua rau lub teeb pom kev zoo, tab sis nyob rau hauv cov xwm txheej hnyav dua, nws tuaj yeem ua rau etching ntawm cov kabmob, uas ua rau cov khoom siv xeb nkag mus rau hauv txoj kev sib tw.Vim li no, corrosion feem ntau hu ua tus yeeb ncuab ntuj ntawm bearings.

Corrosion tsis yog tsuas yog pom kev ceeb;nws tseem tuaj yeem cuam tshuam rau kev lag luam ' nyiaj txiag.Raws li kev tshawb fawb IMPACT ua los ntawmNACE International, lub ntiaj teb cov thawj coj tswj kev txhim kho corrosion, nws tau kwv yees tias 15-35 feem pua ​​​​ntawm txhua xyoo corrosion tuaj yeem tau txais kev cawmdim yog tias kev tswj xyuas corrosion zoo tau ua raws.Qhov no sib npaug rau kev txuag nyiaj ntawm US $ 375 thiab $ 875 billion ib xyoos ib zaug ntawm lub ntiaj teb.

Tus yeeb ncuab?

Nws yog tsis yooj yim sua kom tsis quav ntsej qhov tseem ceeb ntawm cov nqi corrosion, txawm li cas los xij, kev tiv thaiv corrosion yuav tsum tau txiav txim siab nrog rau lwm yam kev ua haujlwm xws li kev coj lub neej ntev thiab kev thauj khoom.

Xav txog qhov no ua piv txwv.Lub tshuab drilling yuav tsum tau ua haujlwm nrog qhov tseeb tab sis yuav tsum tau ua haujlwm hauv cov xwm txheej tsis zam txim.Vim muaj huab cua puag ncig ntawm cov roj thiab roj rigs, corrosion resistant bearings yuav raug pom zoo.Yog tias tus kws tsim qauv tsim qauv yuav xaiv rau cov kabmob uas muaj kev tiv thaiv zoo heev uas tau tsim los ntawm polyether ether ketone (PEEK), qhov no yuav tsum tsis txhob xeb hauv nws cov lem, tab sis qhov tseeb ntawm lub tshuab yuav raug cuam tshuam.Nyob rau hauv no scenario opting rau ib tug high precision stainless hlau bearing nrog superior roundness thaum tso cai rau ib co superficial corrosion tej zaum yuav preferable.

Thaum ntsuas qhov tsim nyog thiab qhov zoo ntawm cov bearings, nws yog ib qho tseem ceeb uas yuav tsum tau saib tshaj qhov zoo nkauj sab nraud.Kev tswj xyuas corrosion tsuas yog ib qho kev ua tau zoo, uas tsis tas yuav ua rau kev ua haujlwm tsis zoo lossis cuam tshuam rau cov kabmob sab hauv rollability.

Xyuas kom cov khoom siv raug xaiv yog thawj kauj ruam - thiab qhov no yog qhov tseem ceeb rau ob qho tib si cov tshuab loj thiab cov khoom me me, xws li cov kabmob.Hmoov zoo, cov neeg saib xyuas chaw nyob sab ntug dej hiav txwv tuaj yeem hnyav txog lawv cov kev tsim qauv thiab tuaj yeem xaiv los tiv thaiv corrosion ntawm theem tsim.Nov yog peb txoj hauv kev tswj kev tiv thaiv corrosion los xav txog:

A-Kev xaiv khoom

Stainless hlau yog qhov kev xaiv pom tseeb tshaj plaws rau kev tiv thaiv corrosion thiab yog dav siv hauv kev lag luam offshore roj thiab roj.Nws kuj muaj lwm yam khoom zoo xws li durability thiab kub tsis kam.440 qib stainless hlau bearings muaj kev tiv thaiv zoo hauv qhov chaw ntub dej thiab feem ntau siv rau hauv cov ntawv thov xws li kev lag luam khoom noj thiab dej haus.Txawm li cas los xij, 440 qib stainless hlau bearings muaj qhov tsis zoo rau cov dej ntsev thiab ntau cov tshuaj muaj zog, yog li rau qhov hnyav offshore ib puag ncig 316 stainless hlau yuav raug txiav txim siab.Txawm li cas los xij, raws li 316 stainless hlau tsis tuaj yeem thermally hardened, 316 bearings tsuas yog haum rau cov khoom siv qis thiab qis qis.Lawv cov kev tiv thaiv corrosion yog qhov zoo tshaj plaws thaum muaj cov pa oxygen txaus yog li cov kabmob no feem ntau yog siv los ntawm cov kab dej, hauv cov dej hiav txwv ntws los yog qhov twg cov bearings tuaj yeem ntxuav tom qab submersion hauv dej hiav txwv.

Lwm qhov kev xaiv khoom siv yog ceramic.Tag nrho cov kabmob ceramic ua los ntawm zirconia lossis silicon nitride nrog PEEK tawb tuaj yeem muab kev tiv thaiv corrosion ntau dua thiab feem ntau siv tag nrho submerged.Ib yam li ntawd, cov kabmob yas, nrog 316 stainless hlau lossis iav pob, muab kev tiv thaiv corrosion zoo heev.Cov no feem ntau yog tsim los ntawm acetal resin (POM) tab sis lwm cov ntaub ntawv muaj rau cov kua qaub thiab alkalis muaj zog xws li PEEK, polytetrafluoroethylene (PTFE) thiab polyvinylidene fluoride PVDF.Zoo li 316 qib bearings, cov no yuav tsum tsuas yog siv rau hauv cov khoom siv qis thiab cov ntawv thov tsis tshua muaj siab.

Lwm qib ntawm armor tiv thaiv corrosion, yog txheej tiv thaiv.Chromium thiab npib tsib xee plating muab kev tiv thaiv corrosion zoo nyob rau hauv ib puag ncig corrosive heev.Txawm li cas los xij, cov coatings thaum kawg yuav cais tawm ntawm cov kabmob thiab xav tau kev saib xyuas tas li.Qhov no tsis yog qhov kev xaiv zoo tshaj plaws rau kev siv offshore.

B-Lubricants

Lub lubricant muab ib zaj duab xis nyias ntawm cov chaw sib cuag hauv cov kabmob kom txo tau kev sib txhuam, dissipate tshav kub thiab inhibit corrosion ntawm cov khoom thiab raceways.Deg roughness thiab lubrication zoo yog qhov tseem ceeb heev cuam tshuam rau qhov kev ntxhov siab ntawm qhov chaw yuav tshwm sim los yog tsis.

Kev xaiv rau qhov tseeb lubricant tseem ceeb.Nyob rau hauv ib qho chaw uas superficial corrosion yuav tshwm sim nyob rau sab nraud ntawm cov kabmob, nws yuav tsum tsis txhob raug tso cai tshwm sim rau sab hauv.SMB Bearings tuaj yeem muab cov kabmob kaw nrog cov roj tsis muaj dej uas muaj cov tshuaj tiv thaiv corrosion.Cov roj nplua nyeem no tiv thaiv qhov chaw sab hauv ntawm cov kabmob thiab tuaj yeem sib phim rau cov kev thov tshwj xeeb ntawm ntug dej hiav txwv.Tag nrho cov kabmob ceramic feem ntau tau teev tseg yam tsis muaj lubrication tab sis tuaj yeem lubricated nrog cov roj dej tsis zoo rau lub neej ntev.

C-Seals

Nyob rau hauv ib puag ncig hnyav, kev tiv thaiv kev kis kab mob yog qhov tseem ceeb tshaj plaws, yog li kev xaiv rau lub foob tiv thaiv yog qhov zoo los xyuas kom cov kab mob tsis nkag mus rau hauv cov kabmob.Rau cov khoom siv uas tuaj yeem raug cov dej noo, lub foob tiv thaiv kuj yuav ua rau muaj kev tiv thaiv dej ntxiv.Qhov no yuav tsum tsis txhob muaj roj ntxuav tawm ntawm cov kabmob, tso cai rau nws ua nws txoj haujlwm hauv lubricating thiab tiv thaiv sab hauv ntawm cov kabmob.Lwm qhov kev xaiv yog ib daim ntaub thaiv hlau tab sis qhov no muab kev tiv thaiv kom tsis txhob ya raws.

Los ntawm kev ntsuam xyuas qhov chaw ua haujlwm, xav tau lub neej ntev thiab kev thauj khoom uas yuav tsum tau siv rau cov kabmob, qhov zoo tshaj plaws bearing tej zaum yuav txo qis 'wonky zaub' thiab tsis yog ib qho uas tseem saib zoo nkauj rau ntev tshaj plaws.Los ntawm kev xav txog cov kabmob tag nrho ntawm ib puag ncig kev ua haujlwm, cov kws tsim qauv tuaj yeem ntsuas seb qhov kev xaiv rau kev tswj xyuas kev tsim qauv yuav yog tus nqi zoo tshaj plaws, ua kom cov kabmob muaj sia nyob thiab txhawb nqa lub tshuab ua haujlwm.