Tus Qauv Hlau Antirust Cov Qauv Qhia Txog Cov Qauv Qhia Tawm Tsam: Ntsiab Lus Tseem Ceeb
Feb 13, 2025| Stainless hlau yog cov khoom siv tseem ceeb siv nyob rau hauv ntau hom kev lag luam, los ntawm kev tsim kho thiab tsheb mus rau kev ua zaub mov noj thiab khoom siv kho mob. Nws cov xeeb ceem feem ntau yog nws txoj kev tiv thaiv kom corrosion, uas yog qhov tseem ceeb rau kev ua kom muaj txiaj ntsig thiab ua haujlwm ntawm cov chaw hnyav. Txawm li cas los xij, tsis yog txhua tus hlwv ntawm cov hlau tsis muaj sib npaug raws li corrosion tsis kam. Qhov no yog qhov twg lub tswv yim ntawm antator lossis corrosion resistance qib nkag los ua si.
To taub cov txheej txheem sib koom tes rau cov qhab nia uas tsis muaj neeg antairs yog qhov tseem ceeb rau kev xaiv cov khoom kom tsim nyog rau cov ntawv thov tshwj xeeb. Hauv tsab xov xwm no, peb yuav tshawb cov qib sib txawv ntawm cov hlau stainless, lawv yuav ua li cas cais tawm ntawm lawv corrosion tsis kam, thiab yuav ua li cas xaiv txoj cai rau koj cov kev xav tau.
Dab tsi yog stainless hlau?
Stainless hlau yog ib qho kev ua los ntawm cov hlau, nrog tsawg kawg 10,5% chromium cov ntsiab lus. Qhov txheej roj chromium cov txheej oxide ntawm cov hlau ntawm cov hlau, tiv thaiv kev xeb thiab staining. Stainless hlau yog categories rau ntau hom raws nws cov lus sib xyaw thiab microstructure:Austenitic, Ferritic, Martensitic, Duplex,thiabnag lossis daus-tawvStainless hlau.
Txhua qeb muaj cov khoom tshwj xeeb haum rau cov ntawv thov tshwj xeeb. Piv txwv li,Austenitic Stainless hlauZoo li 304 thiab 316 yog cov corrosion heev, ua rau lawv zoo tshaj rau cov chaw dej noo thiab cov khoom corrosive. Ntawm qhov tod tes,tus ntaus rogCov qib kawm, xws li 410. yog qhov nyuaj thiab siv tau hauv cov ntawv thov uas yuav tsum muaj zog dua corrosion tsis kam.
Nkag siab txog kev tiv thaiv kev tiv thaiv lossis xeb tsis kam
Lo lus "antirust" yog hais txog cov khoom muaj peev xwm tiv thaiv kev corrosion thaum raug rau ntau yam kev ib puag ncig, xws li ya raws ib puag ncig, tshuaj lom neeg, lossis kub. Stainless hlau qhov tsis kam mus rau xeb thiab corrosion yog cuam tshuam ncaj qha los ntawm tus nqi ntawm chromium, npib tsib xee, thiab lwm yam hauv alloy.
Cov cheeb tsam sib txawv cuam tshuam rau stainless hlau nyob rau ntau txoj kev. Piv txwv li, cov ntug dej hiav txwv uas muaj cov ntsev ntsev ntau tuaj yeem ua rau muaj cov ntaub ntawv nrawm dua, thaum ib puag ncig uas muaj cov hlau tsis muaj tshuaj tiv thaiv cov hlau. Yog li, kev xeb tsis kam ntawm stainless hlau tsis yog ib-qhov loj-haum-txhua cov cuab yeej thiab nyob ntawm cov khoom muaj ntau yam, suav nrog kev sib xyaw ua ke thiab kev sib xyaw.
Cov tub ntxhais hluas antirust stainless hlau thiab qauv
Stainless hlau tau faib rau ntau qib raws nws txoj kev tiv thaiv kom corrosion thiab nws cov ntawv thov txhim kho. Cov qhab nia kawm tau qauv zoo li cas los ntawm cov koom haum Astm (American Society rau kev sim thiab cov ntaub ntawv), iso thoob ntiaj teb rau kev ntsuas), thiab din (deutsches internet).
1 .Common Stainless Hlau Qib
304 Stainless Hlau: Qhov no yog feem feem ntau siv stainless hlau qib, muab cov kev tiv thaiv corrosion zoo nyob rau hauv feem ntau cov chaw ib puag ncig. Nws feem ntau siv rau hauv chav ua noj ua noj, cov khoom ua lag luam ua tau zoo, thiab cov khoom vaj khoom txheem. Nws tuaj yeem tiv thaiv tau rau ib puag ncig huab cua, dej tshiab, thiab tshuaj me me.
316 Stainless Hlau: Paub tias nws zoo tshaj qhov kev xeb, tshwj xeeb hauv cov tub rog marine thiab cov khoom muaj peev xwm tiv thaiv pitting thiab crevice corrosion hauv chloride ib puag ncig. Nws yog qhov zoo tagnrho rau cov khoom siv marine, ua tshuaj lom neeg thiab khoom siv kho mob.
430 stainless hlau: Thaum nws tsis muaj tib theem ntawm corrosion tsis kam raws li 304 lossis 316. 430 Stainless hlau muaj ntau dua hauv tsev neeg siv khoom lag luam thiab tsheb.
2. Qauv cov qauv kev tiv thaiv
Cov qauv zoo liASTM A240lossisISO 3506Muab cov lus qhia rau cov tuam txhab uas tsis muaj peev xwm ua tau raws cov qib kev ua tau zoo. Cov qauv txheej txheem no feem ntau stainless hlau raws li nws kev tiv thaiv ntawm ntau hom corrosion, xws li pitting, kev ntxhov siab corrosion, thiab kev nyuaj siab corrosion tawg. Kev nkag siab cov qauv pab tsim qauv thiab cov kws tsim khoom lag luam xaiv cov khoom raug rau cov ntawv thov tshwj xeeb.
Kev sib piv ntawm cov roj stainless me me raws li corrosion tsis kam
Nkag siab txog corrosion tsis kam ntawm txhua qib stainless hlau yog qhov tseem ceeb los xaiv cov khoom siv yog. Ntawm no yog qhov sib piv ntawm qee qhov ntawm feem ntau siv stainless hlau qib:
304 Stainless hlau tau dav siv vim nws sib npaug ntawm cov zoo corrosion zoo ua, lub zog, thiab muaj peev xwm. Nws tiv taus ntau yam huab cua chaw ib puag ncig thiab ntau yam tshuaj lom neeg. Txawm li cas los xij, nws tsis haum rau ib puag ncig uas muaj cov tshuaj ntau ntawm Chlorides (zoo li dej hiav txwv), uas tuaj yeem ua rau pitting thiab crevice corrosion sijhawm.
316 Stainless hlau muaj zoo corrosion tsis kam tshaj 304. Tshwj xeeb hauv chloride ib puag ncig. Qhov sib ntxiv ntawm Molybdenum ua rau nws muaj kev tiv thaiv heev rau pitting thiab corrose corrosion. Nws yog feem ntau siv nyob rau hauv cov ntawv thov marine, nrog rau hauv cov tshuaj thiab cov khoom lag luam muag tshuaj, qhov twg tsis kam rau cov tshuaj corrosive yog qhov tseem ceeb.
Thaum 430 stainless hlau muaj kev cuam tshuam rau corrosion hauv qhuav, tsis muaj chloride ib puag ncig, nws ua tau zoo hauv kev ua haujlwm hnyav, noo noo, muaj qhov tsawg rau 304 lossis 316 qib. Nws ib txwm siv rau hauv chav muab khoom siv hauv chav ua noj, kev hloov pauv cua sov, thiab qhov chaw tsheb uas tsis xav tau kev ua haujlwm siab.
Lwm cov qib tshwj xeeb
Kev ua haujlwm siab alloys nyiam2205 Duplex Stainless Hlaulossis17-4 pHyog tsim rau cov chaw muaj ib puag ncig. Duplex Stainless hlau, piv txwv li, muaj microstrite, muab cov roj ua kom zoo, ua rau lawv zoo tagnrho rau roj thiab roj av, thiab kev lag luam ua haujlwm.
Yuav ua li cas xaiv txoj cai ntawm lub hom phiaj stainless hlau rau cov khoom tiv thaiv antirust
Thaum xaiv cov hlau tsis xeb rau daim ntawv thov, nws yog qhov tseem ceeb los txiav txim siab ntau yam:
Kev kis tau ib puag ncig ib puag ncig: Txiav txim siab seb cov khoom siv yuav raug rau dej ntshiab, dej ntsev, lossis tshuaj hnyav. Piv txwv li, 316 stainless hlau yog qhov zoo rau cov ntawv thov marine, thaum 304 tuaj yeem siv hauv chav ua noj thiab ua zaub mov ua.
Tus nqi thiab muaj: Cov qib nyiam 304 tau raug nqi ntau dua 316. Tab sis tsis tuaj yeem ua tau zoo nyob rau hauv ib puag ncig corrosive. Xav txog cov kev lag luam-tawm ntawm tus nqi thiab kev ua tau zoo.
Cov Khoom Siv Neeg Kho Tshuab: Yog tias lub zog yog qhov tseem ceeb raws li corrosion tsis kam, qib nyiam17-4 pHTej zaum yuav tau, raws li lawv muab ob lub zog siab thiab zoo tsis kam rau kev ntxhov siab corrosion tawg.
Los ntawm kev txuam nrog txoj cai qib nrog cov kev mob ib puag ncig thiab kev ua tau zoo, koj tuaj yeem paub meej txog kev ua kom ntev thiab ntseeg tau ntawm cov hlau stainless.
Yuav ua li cas thiaj tswj tau stainless hlau rau qhov kev ua tau zoo tshaj plaws
Thaum stainless hlau yog inherently resistant rau corrosion, kev saib xyuas tsis tu ncua pab tswj nws cov tsos thiab kev ua tau zoo:
Kev ntxuav thiab txij nkawm
Kev ntxuav tu tsis tu ncua txwv tsis pub cov tsim av ntawm av, ntsev, thiab tshuaj lom neeg uas tuaj yeem ua rau muaj kev xeb. Me npuaj thiab dej yog feem ntau txaus rau kev ntxuav feem ntau stainless hlau chaw. Rau cov tawv ncauj ntau dua lossis xeb, ib qho tshwj xeeb stainless hlau yas huv yuav siv tau.
Cov Khaub Ncaws Tiv Thaiv thiab Kho
Nyob rau hauv ib puag ncig corrosive heev, kev tiv thaiv ntxiv zoo lipassivationLos yog txheej nrog cov yeeb yaj kiab tiv thaiv tuaj yeem txhim kho cov khoom uas tiv thaiv corrosion. Passivation cuam tshuam nrog kev kho cov hlau stainless nrog rau nitric acid daws teeb meem los txhim kho cov chromium oxide txheej, txhim kho nws corrosion tsis kam.
Xaiv txoj cai ntawm tus qauv hlau rau nws cov khoom siv tshuaj tiv thaiv yog qhov tseem ceeb kom paub tseeb tias koj cov khoom ua haujlwm zoo nyob rau lub sijhawm. Tej yam zoo li cov kev mob ib puag ncig, hom tshwj xeeb ntawm corrosion kis, thiab cov neeg kho tshuab xav tau ntawm koj daim ntawv thov kev txiav txim siab. Los ntawm kev nkag siab ntau cov qib thiab lawv cov corrosion tsis kam muaj peev xwm, koj tuaj yeem paub cov kev paub uas txhim kho cov hlau ntev thiab ua tau zoo ntawm koj cov hlau stainless.
Raws li cov hlau tsis muaj roj stainless txuas ntxiv, cov alloys tshiab thiab kev kho mob yuav muaj txawm tias muaj kev ua tau zoo dua hauv huab. Nyob twj ywm qhia txog qhov kev tsim tawm tshiab tshaj kom koj cov khoom ntawm qhov ua ntej thiab kev ntseeg tau.
Yog tias koj tsis paub tseeb tias qhov kev xaiv twg yog qhov zoo tshaj rau koj qhov project,Hu rau peb pab neeg Rau cov tswv yim tshaj lij thiab kev pab. Txuas mus xyuas peb cov khoom lag luam lossis tshawb peb cov lus qhia ntxaws ntxaws rau cov ntaub ntawv ntxiv.
Cov Lus Nug
Q1: Puas tuaj yeem 304 stainless hlau xeb?
Txawm hais tias 304 stainless hlau yog resistant rau corrosion, nws tuaj yeem xeb hauv qee qhov xwm txheej, tshwj xeeb yog nthuav tawm cov kab mob chlorides lossis cov khoom siv hnyav ua lub sijhawm.
Q2: Cov qib ua tau zoo tshaj plaws ntawm stainless hlau rau cov chaw ua tub rog?
316 stainless hlau yog qhov kev xaiv zoo tshaj plaws rau cov ntawv thov marine vim nws tsis kam rau kev xeb hauv dej hiav txwv thiab chloride ib puag ncig.
Q3: Vim li cas 316 stainless hlau ntau dua 304?
316 Stainless hlau muaj molybdenum, uas muab kev txhim kho kom xeb, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig ntau, ua rau nws kim dua 304 stainless hlau.