Thaum lub npoo ntawm cov yeeb nkab steel hlau tau tshwm sim rau saum npoo ntawm cov xim av xeb (cov ntsiab lus), cov neeg xav tsis thoob: "stainless steel tsis xeb, xeb tsis yog stainless hlau, tej zaum yuav muaj teeb meem nrog hlau." Qhov tseeb, qhov no yog ib qho kev nkag siab tsis zoo ntawm kev tsis nkag siab ntawm stainless hlau. Stainless hlau kuj yuav xeb nyob rau hauv tej yam kev mob.
Stainless hlau muaj peev xwm tiv taus atmospheric oxidation-uas yog, stainlessness, thiab nws kuj muaj peev xwm corrode nyob rau hauv acid, alkali, thiab ntsev-uas yog, corrosion kuj. Txawm li cas los xij, qhov loj ntawm nws cov corrosion kuj hloov nrog nws cov hlau nws tus kheej cov tshuaj muaj pes tsawg leeg, ntxiv lub xeev, tej yam kev mob thiab ib puag ncig nruab nrab hom. Piv txwv li, 304 steel kav, nyob rau hauv qhov chaw qhuav thiab huv si, muaj qhov zoo tshaj plaws xeb tiv thaiv, tab sis txav mus rau thaj tsam ntawm ntug dej hiav txwv, hauv hiav txwv pos huab uas muaj cov ntsev ntau, nws yuav sai sai xeb; thaum 316 steel kav ua tau zoo. Yog li ntawd, nws tsis yog txhua yam ntawm stainless hlau uas tuaj yeem tiv taus corrosion thiab xeb hauv ib puag ncig.
Stainless hlau yog ib qho nyias nyias, ruaj khov thiab ruaj khov thiab ruaj khov thiab ruaj khov chromium -enriched oxide zaj duab xis (cov yeeb yaj kiab tiv thaiv) tsim los ntawm nws qhov chaw los tiv thaiv lub peev xwm ntawm oxygen atoms kom nkag mus thiab txuas ntxiv mus rau oxidize, thiab tau txais lub peev xwm los xeb. Thaum muaj ib qho laj thawj, cov yeeb yaj kiab no tau raug puas tsuaj tas li, thiab cov pa oxygen ntawm huab cua lossis kua yuav nkag mus ntxiv lossis cov hlau nruab nrab hlau atom yuav tawm mus ntxiv, tsim cov hlau oxide xoob, thiab cov hlau saum npoo yog rusting tas li. Muaj ntau hom kev puas tsuaj los ntawm qhov chaw no, thiab muaj ntau ntau yam hauv lub neej txhua hnub: cov hauv qab no:
1. Qhov saum npoo ntawm stainless hlau yog muaj nyob rau hauv hmoov av los yog alien hlau hais uas muaj lwm yam hlau ntsiab. Nyob rau hauv cov huab cua ntub, cov dej condensed nruab nrab ntawm cov adhesion thiab stainless hlau yog txuas nrog lub micro-battery, cov yeeb yaj kiab tiv thaiv puas, uas yog hu ua electrochemical corrosion.
2. Stainless hlau nto adheres rau cov kua txiv hmab txiv ntoo (xws li melon zaub, noodles, hnoos qeev, thiab lwm yam). Nyob rau hauv cov ntaub ntawv ntawm dej oxygen, nws tsim cov organic acids thiab corrodes cov hlau nto rau lub sij hawm ntev.
3. Qhov saum npoo ntawm stainless hlau nplaum muaj cov kua qaub, alkali, thiab ntsev (xws li dej alkaline thiab limesty dej txaws rau ntawm phab ntsa kho kom zoo nkauj), ua rau hauv zos corrosion.
4. Nyob rau hauv cov pa phem (xws li vulcosion ntau, carbon oxide, nitric oxide cua), condense dej, tsim sulfuric acid, nitric acid, thiab acetic acid kua ntsiab lus, ua rau cov tshuaj corrosion.
Cov xwm txheej saum toj no tuaj yeem ua rau muaj kev puas tsuaj rau cov hlau tsis muaj hlau tiv thaiv daim nyias nyias. Yog li ntawd, txhawm rau txhawm rau txhawm rau txhawm rau ruaj khov thiab lub teeb hlau nto thiab tsis xeb, peb pom zoo:
1. Nws yog ib qho tsim nyog los ntxuav lub ntsej muag ntawm cov hniav zoo nkauj stainless hlau kom tshem tawm cov kev sib txuas kom tshem tawm cov khoom siv sab nraud uas ua rau kev hloov kho.
2. 316 stainless steels yuav tsum tau siv nyob rau hauv seaside cheeb tsam, thiab 316 cov ntaub ntawv yuav tiv taus seawater corrosion.
3. Qee cov yeeb nkab stainless hlau cov khoom xyaw hauv kev ua lag luam tsis tuaj yeem ua tau raws li lub teb chaws tus qauv, ncav cuag 304