Stainless hlau hnab cuab yeej ua si lub luag haujlwm tsis tseem ceeb hauv kev lag luam. Lawv tsis yog tsuas yog lub luag haujlwm ntawm cov dej sib kis tau, tab sis kuj tau siv dav hauv ntau cov roj av xws li kev lag luam tshuaj lom neeg thiab kev lag luam corrosion. Nyob rau hauv xyoo tsis ntev los no, nrog kev txhim kho txuas ntxiv ntawm lub teb chaws cov khoom siv tsim kho, tib neeg tau tso rau tom ntej lub siab dua rau lub luj tshib luj tshib. Txawm li cas los xij, nyob rau hauv lub ntsej muag ntawm puas tau hloov pauv thiab cov pob zeb ua kom zoo nkauj ntawm stainless hlau luj, uas yog qhov tseem ceeb kom ntseeg tau tias nws lub neej pabcuam. Yog li ntawd, nws yog qhov tseem ceeb tshaj plaws los kawm seb yuav txhim kho lub corrosion tsis kam ntawm stainless hlau luj. Lub hom phiaj ntawm tsab xov xwm no yog los kawm txog ntau lub tswv yim los txhim kho cov corrosion verbows, vam tias yuav muaj txiaj ntsig kev lag luam rau kev lag luam muaj txiaj ntsig.
Cawv ntawm Stainless Hlau Lua log khoom xaiv ntawm nws corrosion tsis kam
Txheej txheem cej luam ntawm Cov Ntaub Ntawv Hlau Stainless
Stainless hlau yog ib qho muaj ntau yam ntawm ntau yam xws li hlau, chromium, thiab npib tsib xee. Nws nthuav tawm zoo tshaj plaws corrosion ua hauj lwm zoo, muaj kub tsis kam thiab cov khoom siv tshuab tshuab. Stainless hlau tau dav siv nyob rau hauv kev lag luam hauv tebchaws. Raws li cov lej sib txawv ntawm alloy, stainless hlau tuaj yeem faib rau hauv cov hlau tsis muaj stainless hlau, ferritic stainless hlau, martensitic stainless hlau thiab lwm pawg.
Kev sib piv ntawm corrosion tsis kam ntawm stainless hlau hnab nqa ntawm cov khoom sib txawv ntawm cov khoom sib txawv
Nyob rau hauv qee qhov kev mob corrosion tshwj xeeb, stainless hlau hnab cuab tau los ntawm cov khoom sib txawv qhia cov yam ntxwv sib txawv corrosion. Cov khoom siv hlau stainless hlau yog nquag ua rau pitting kev puas tsuaj rau cov acidic ib puag ncig vim muaj cov yeeb yaj kiab oxide rau saum npoo. Noj 304 stainless hlau ua piv txwv, nws qhia zoo corrosion, tab sis nws corrosion tsis kam yuav raug txo qis heev lossis chloride ion. Tsis tas li ntawd, rau antenenic stainless hlau, nws corrosion tsis kam raws li qhov kub nce siab. Lub corrosion tsis kam ntawm 316L stainless hlau nyob rau hauv chloride ib puag ncig tau txhim kho vim qhov sib ntxiv ntawm molybdenum.
Cov nyhuv ntawm cov ntsiab lus ntawm corrosion tsis kam
Hauv cov hlau stainless, chromium yog suav tias yog kev sib xyaw ua ke. Nws tuaj yeem tsim cov roj oxide nruj rau saum npoo ntawm stainless hlau, zoo tawm tsam kev txeeb chaw ntawm cov xov xwm corrosive. Thromate ions hauv stainless hlau yog qhov muaj kev phom sij yog rau tib neeg kev noj qab haus huv, yog li qee cov hlau lossis cov hlau tsis tau ntxiv rau hauv lawv cov tiam. Lub caij nickel pab txhim kho qhov tsis kam ntawm cov hlau tsis muaj xeb txhawm rau txhawm rau txo cov xov xwm. Piv txwv li cov hlau xws li Molybdenum thiab Vanadium kuj muaj qee qhov cuam tshuam rau. Los ntawm kev ntxiv molybdenum, corrosion tsis kam ntawm stainless hlau hauv chloride ib puag ncig tau txhim kho ntxiv.
Cov Khoom Siv Xaiv
Raws li cov chaw sib txawv ib puag ncig, peb yuav tsum xaiv tsim nyog stainless hlau raws li cov ntaub ntawv. Hauv cov cheeb tsam uas muaj cov khoom siv hluav taws xob siab xws li lub zog hluav taws xob, petharicals thiab lub zog siv hluav taws xob nrog muaj zog corrosion yuav tsum tau muab ua ntej. Piv txwv li, nyob rau hauv muaj cov chloride ions, molybdenum-muaj cov ntaub ntawv stainless hlau xws li 316L yog nyiam; Nyob rau hauv cov kub thiab siab mob, stainless hlau ua los ntawm kev kub siab alloys tuaj yeem txiav txim siab.
Yuav ua li cas cov thev naus laus zis ua rau cov corrosion tsis kam ntawm stainless hlau luj
Txheej txheem cej luam ntawm kev kho tshuab nto
Kev siv cov tshuaj tiv thaiv saum npoo xws li cov electroplating, polishing thiab passive yog txoj kev tseem ceeb los txhim kho cov corrosion tsis kam ntawm stainless hlau luj. Kab lus no rov qab saib cov txheej txheem tseem ceeb thiab lawv cov ntsiab cai thiab cov yam ntxwv nquag siv hauv kev kho mob ntawm cov hlau stainless tshib hauv tsev thiab txawv teb chaws. Txoj kev teeb txheej txheem txheej txheem no pab kom ua kom pom kev zoo ntawm stainless hlau, ua ib txheej tiv thaiv, thiab yog li txhim kho nws txoj kev tiv thaiv.
Txhim Kho ntawm corrosion tsis kam los ntawm cov txheej txheem electroplating
Tshuab hluav taws xob yog tsim kom muaj kev tiv thaiv nruj los ntawm plating hlau lossis alloy nyob rau saum npoo ntawm stainless hlau lossis sib tiv thaiv kev nkag mus rau cov tshuaj uas muaj kuab. Hom qauv no tuaj yeem siv dav hauv kev ua lag luam, tshwj xeeb tshaj yog nyob rau hauv kev tsim khoom thiab tsim cov khoom siv hauv corrosion-resistant thiab cov khoom siv tshuaj lom neeg. Piv txwv li, lub zinc txheej tuaj yeem ua rau zoo txhim kho txoj kev corrosion tsis kam ntawm stainless hlau hnab nqa khoom nyob rau hauv cov huab cua ntub dej.
Lub luag haujlwm ntawm polishing thiab passivation cov txheej txheem
Kev siv cov tshuab thev naus laus zis ua tau zoo txo cov nplaim hluav taws xob ntawm cov tshuaj ntawm cov khoom muaj kuab ntawm cov tshuaj uas xeb ntawm nws, thiab yog li maj mam txo tus nqi xeb. Tshuaj Nickel plating thiab tshuaj palladium plating yog ob txoj kev polishing. Kev siv cov thev naus laus zis hla tuaj yeem tsim cov txheej txheem passivation nyob rau saum npoo ntawm stainless hlau, yog li txuas ntxiv txhim kho kom xeb.
Cov Txheej Txheem Kho Cov Txheej Txheem Xaiv thiab Ntawv Thov
Thaum txiav txim siab txog cov thev naus laus zis saum npoo av, peb yuav tsum tob txog cov khoom siv, siv ib puag ncig thiab tus nqi ntawm lub luj tshib lub luj tshib. Yog hais tias cov corrosion tsis kam ntawm stainless hlau luj tshib yog neeg pluag, nws xav tau kom muaj saum npoo kho kom txhim kho nws corrosion tsis kam. Piv txwv li, hauv ib puag ncig ib puag ncig, 304 stainless hlau luj tuaj yeem kho nrog polishing tshuab; Rau cov sulphur-muaj ib puag ncig ib puag ncig, phosphatating, passivation lossis tshuaj lom neeg hloov cov qauv siv tau. Nyob rau hauv muaj cov chloride ions, peb yuav tsum txiav txim siab siv electroplating lossis cov txheej txheem passivation.
Cawv ntawm vuam txheej txheem ntawm corrosion tsis kam ntawm stainless hlau luj
Cawv ntawm vuam txheej txheem ntawm corrosion tsis kam
Thaum lub sij hawm vuam, ntau yam xws li impurities uas tuaj yeem ntxiv thiab hloov pauv qhov phom sij tiv thaiv ntawm cov hlau uas tsis muaj roj stainless. Thaum kev txheeb xyuas qhov kev sib raug zoo ntawm cov kev sib raug zoo thiab cov corrosion tsis kam ntawm stainless hlau luj tshib, yuav tsum tau txais kev sib cuam tshuam. Piv txwv li, tsis xws li cov kua oxide thiab cov impurities uas tshwm sim thaum lub sij hawm vuam yuav tsis muaj zog ntawm cov hlau tsis muaj zog; Cov nag lossis daus ntawm cov carbides ntawm cov kab ke ntawm cov ciam av uas muaj qoob loo thiab cov zaub mov thiab cov hlawsite cov qauv kev ua tau zoo rau cov khoom siv xeb ntawm cov khoom siv. Qhov coarsening ntawm nplej nyob rau hauv lub tshav kub-cuam tshuam rau nws corrosion tsis muaj zog.
Kev ntsuas los ua kom zoo dua cov vuam
Txhawm rau kom txo qhov tsis xws luag nyob rau hauv vuam, tswj lub tshuab hluav taws xob tshav kub lub tswv yim, peb tuaj yeem xav tau txais yuav cov thev naus laus zis roj ntau npaum li cas los ntawm cov roj av thaiv; nruj me ntsis tswj thiab tswj qhov tam sim no, voltage thiab vuam ceev thaum vuam; Ntxiv dag zog ua ntej vuam, thiab txias txias tom qab vuam.
Kev tshuaj xyuas thiab tiv thaiv tom qab vuam
Tom qab cov txheej txheem vuam ua tiav, Weld yuav tsum raug kuaj xyuas kom ntseeg tau tias tsis muaj qhov tsis xws luag. Ua ntej vuam muag, Weld yuav tsum tau kuaj xyuas qhov tsis xws luag xws li pores thiab tawg. Rau cov kev ua tsis tiav uas twb muaj lawm, yuav tsum tau ua sai sai. Cov ntaub ntawv xws li Vuam Rods, Brazing cov ntaub ntawv thiab cov fillers yuav tsum tau siv thaum kho. Tsis tas li ntawd, txhawm rau txhawm rau tiv thaiv kev tiv thaiv ntxiv, peb tuaj yeem xav txog kev siv cov hau kev xws li txau tshuaj tiv thaiv kab mob corrosion.
Ib puag ncig ib puag ncig cuam tshuam li cas rau corrosion tsis kam ntawm stainless hlau luj tshib, thiab ua li cas coj kev ntsuas los tiv thaiv lawv
Cov cawv ntawm ib puag ncig ntawm kev txhim kho corrosion
Lub corrosion tsis kam ntawm stainless hlau luj tshib yog cuam tshuam los ntawm ntau yam kev mob ib puag ncig xws li nruab nrab muaj pes tsawg leeg. Cov xwm txheej no tsis tuaj yeem hloov pauv lub cev thiab tshuaj ntawm cov ntaub ntawv stainless hlau, tab sis kuj txiav txim siab corrosiveness ntawm stainless hlau rau qee yam. Piv txwv li, qhov kev kub ib puag ncig kub yuav kho kom nrawm tus nqi corrosion ntawm stainless hlau; Tsawg tsawg kub yuav inhibit txoj kev loj hlob ntawm tus nqi stainless hlau, ua rau tawg lossis tawg. Yog tias cov av noo siab dhau lawm, ib txheej ntawm dej zaj duab xis yuav ua rau saum npoo ntawm stainless hlau, uas yuav ua kom nrawm tus nqi xeb; Ua kom muaj cov chloride ion cov ntsiab lus nyob rau hauv nruab nrab nyob rau hauv nruab nrab hauv lub corrosion luj tshib, tab sis thaum nws tshaj ib tug tseem ceeb nqi, tiv thaiv kev kho mob corrosion. Cov kua dej muaj cov tshuaj uas muaj kev sib haum xeeb yuav muaj cov nyhuv ncaj qha rau ntawm cov hlau hlau stainless
Xaiv thiab Kev Siv Cov Ntsuas Tiv Thaiv
Txhawm rau txhim kho cov corrosion tsis kam ntawm stainless hlau luj nyob rau hauv kev tiv thaiv kev tiv thaiv, peb tuaj yeem txiav txim siab siv ntau yam kev tiv thaiv kab mob thiab kev tiv thaiv corrosion. Kab lus no qhia tau ntau hom tshuaj corrosion-resistant cov ntaub ntawv thiab kev tshuaj xyuas lawv cov ntawv thov thiab kev sib piv rau cov khoom siv tiv thaiv corrosion hauv kev tsim khoom tiag tiag. Cov txheej txheem tiv thaiv corrosion muaj peev xwm los ua cov txheej tiv thaiv nruj, yog li tiv thaiv kev nkag mus rau kev nkag mus ntawm corrosive media; Corrosion-inhibing Txheej ci tuaj yeem ncua kev loj hlob ntawm cov yeeb yaj kiab oxide, qeeb lawv cov khoom siv hlau, thiab yog li txuas txoj haujlwm lub neej ntawm cov kav hlau. Corrosion inhibitors muaj peev xwm ua rau inhibit qhov kev nce qib ntawm cov tshuaj corrosion, uas pab kom qeeb tus nqi ntawm kev xeb.
Kev hloov kho ib puag ncig
Nyob rau hauv tus txheej txheem ntawm kev tsim stainless hlau luj lub luj tshib, qhov cuam tshuam ntawm kev siv ib puag ncig ntawm lawv corrosion kuj yuav tsum tau txiav txim siab nyob rau hauv qhov tob. Feem ntau, siv cov ntaub ntawv nrog muaj zog corrosion tsis kam tuaj yeem tsim nyog rau lub neej kev pabcuam, thiab rau qee qhov xwm txheej tshwj xeeb, nws yog ib qho tseem ceeb rau kev xaiv cov ntaub ntawv nrog kev ua haujlwm zoo dua. Piv txwv li, hauv cov khoom siv dej nrog cov tshuaj uas muaj cov dej, cov ntaub ntawv nrog cov khoom siv ntau dua xws li Duplex Stainless hlau yog qhov kev xaiv tau zoo; Nyob rau hauv lub ntsej muag ntawm qhov kub thiab kub siab ib puag ncig, peb yuav tsum txiav txim siab siv cov khoom kub siab xws li kub taub hau kub.
Yuav ua li cas thiaj tswj tau thiab saib xyuas lub corrosion tsis kam ntawm stainless hlau luj lub sijhawm siv
Kev kuaj xyuas tsis tu ncua thiab txij nkawm
Txhawm rau kom ntseeg tau tias kev nyab xeeb ntawm stainless hlau luj lub sijhawm siv, peb yuav tsum ua kev tshuaj ntsuam xyuas thiab kho kom zoo nkauj. Stainless hlau hnab yuav tsum nruj me ntsis tshuaj xyuas thiab tsim nyog ua ntej lawv tuaj yeem muab tso rau hauv ntau lawm. Qhov kev tshuaj xyuas npog cov chaw ntawm stainless hlau luj lub luj tshib, qhov zoo ntawm welded pob qij txha, thiab zawm hniav ntawm kev sib txuas. Los ntawm kev kuaj xyuas ib txwm, tsis xws luag lossis qhov tsis txaus ntseeg hauv kev tsim qauv thiab tsim qauv ntawm stainless hlau hnab tuaj yeem nrhiav tau thiab tshem tawm raws sijhawm. Rau cov teeb meem tshwm sim, peb yuav tsum ua ntsuas kev ntsuas sai sai.
Daim Ntawv Thov Kev Kho Mob Tshuab
Siv cov qib siab nrhiav tau cov thev naus laus zis xws li electrochemical tsis tshua muaj txheej txheem, peb tuaj yeem taug qab cov khoom siv stainless hauv lub sijhawm, yog li muab cov khoom lag luam rau kev ua haujlwm tom ntej. Cov ntawv txheeb xyuas no thiab sib piv ntau txoj kev kuaj corrosion Cov kev sib txuas ntawm cov thev naus laus zis tau siv dav hauv thaj teb kev lag luam raug rau nws cov kev ua haujlwm siab thiab yooj yim.
Coj txij nkawm raws li kev soj ntsuam cov txiaj ntsig
Raws li cov ntaub ntawv tswj hwm corrosion, peb tuaj yeem siv kev saib xyuas sai li xws li kev tu thiab hloov cov ntu puas. Hauv kev saib xyuas ntawm lub raj raj, kev saib xyuas tshwj xeeb yuav tsum tau them rau kev kuaj pom thiab kho cov ntu sib txawv. Piv txwv li, yog tias cov pob corrosive tau pom nyob rau saum npoo ntawm lub luj tshib lub luj tshib, sib txawv tu cov qauv xws li pickling tuaj yeem siv; Yog tias muaj kev ntxhov siab cov ntsiab lus hauv raj dej, arc vuam siv tau rau kev kho. Yog tias tawg lossis lwm yam tsis xws luag tshwm sim hauv lub vuam ib feem, lawv yuav tsum tau kho lossis hloov sai.
Hauv cov ntsiab lus, nyob rau hauv thiaj li yuav txhim kho rau corrosion tsis kam ntawm stainless hlau luj, peb yuav tsum tau kho cov khoom siv, kev tiv thaiv kev tiv thaiv, kev saib xyuas ib puag ncig, kev saib xyuas ib puag ncig. Los ntawm ua tib zoo xaiv cov ntaub ntawv siv tshuab stainless hlau, txhim kho cov kev kuaj xyuas cov chaw ib puag ncig, thiab kho kom meej tias lawv cov haujlwm ruaj khov thiab txhim khu kev qha. Nyob rau tam sim no, stainless hlau laujricows tau siv dav hauv kev lag luam tshuaj thiab tau ua tiav cov txiaj ntsig zoo thiab muaj txiaj ntsig zoo. Saib mus rau yav tom ntej, nrog kev nce qib txuas ntxiv ntawm cov khoom siv science thiab corrosion tiv thaiv corrosion, yog li muab cov kev daws teeb meem rau kev lag luam.
