### 1. Yuav tiv thaiv li 304 stainless hlau los ntawm xeb?
Txhawm rau tiv thaiv 304 stainless hlau los ntawm xeb, koj yuav tsum tswj nws cov txheej tiv thaiv passive. Cov kauj ruam tseem ceeb suav nrog:
* ** KEV UA SI: ** Ntxuav cov xab npum thiab dej me kom tshem tawm cov av, av, thiab ntsev uas tuaj yeem tsoo cov txheej passive.
* ** Zam kev ua kom nruj: ** Ua kom deb ntawm ib puag ncig muaj kev ntxhov siab, zoo li tshuaj tsuag hiav txwv lossis tshuaj tsuag hiav txwv hnyav} i
* ** Siv cov cuab yeej tsim nyog: ** Huv nrog tsis {0 eg, cov ntaub mos txwv}
* ** Kev txiav txim siab: ** Txiav txim siab passivation, cov txheej txheem tshuaj lom neeg uas tshem tawm cov hlau dawb thiab txhim kho lub ntuj chromium oxide txheej.
* ** Xaiv cov qib yog: ** rau cov qib kev txhim kho ib puag ncig, siv cov qib siab dua li 316 stainless hlau tsis muaj 304.
### 2. Tus yeeb ncuab ntawm stainless hlau?
Tus yeeb ncuab tshaj plaws ntawm stainless hlau yog ** chlorides **. Chloride ions, pom hauv ntsev (dej hiav txwv, tsib - iching ntsev, thiab txawm tias muaj qee yam khoom noj khoom haus), yog kev txhoj huv. Lawv tuaj yeem nkag rau cov kev tiv thaiv cov roj chomium oxide txheej, ua rau pitting corrosion thiab crevice corrosion, uas yog cov qauv kev tawm tsam uas tuaj yeem ua rau kev puas tsuaj.
### 3. Cov hlau yuav tsum tsis txhob siv nrog cov hlau tsis muaj hlau?
Koj yuav tsum zam kev sib cuag ncaj qha ntawm stainless hlau thiab ** tsawg dua nobric (ntau anodic (ntau anodic) metals ** xws li ** CARBON STEECH ** zoo li ** ALLOX ** Thaum cov hlau no txuas nrog hauv qhov muaj hluav taws xob (zoo li dej) yog tsim. Lub stainless hlau (cathohode) yog kev tiv thaiv, tab sis lwm cov hlau (anode) yuav corrode ntawm tus nqi nrawm nrawm. Yog tias lawv yuav tsum tau siv ua ke, siv insulating cov ntaub ntawv los ua kom tawg hluav taws xob.
### 4. Qhov twg uas tsis muaj xeb yuav tsis xeb?
Tsis muaj tus hlau stainless yog 100% xeb -}}}}}}} Cov ntaub ntawv pov thawj *, tab sis qee qhov muaj xeb- * resistant *. Feem ntau cov qib paub txog kev tiv thaiv corrosion yog ** 316 Stainless hlau ** (feem ntau hu ua "marine- qib" stainless). Nws muaj molybdenum, uas ua rau nws tsis kam mus rau chlorides thiab acids. Rau cov cheeb tsam hnyav, zoo li 904L) thiab zoo li 2205) yog siv, uas yog cov tiv taus xeb.
### 5. Tshuaj tua tau rhuav tshem?
Ob peb chement tuaj yeem rhuav tshem cov txheej passive thiab corrode stainless hlau:
* ** HYFOFRLLLICOR acid (HF): ** Qhov no muaj kev txhoj puab heev thiab yuav nrawm thiab corrode stainless hlau.
* ** Muaj cov yeeb yaj kiab muaj zog: ** Raws li tau hais, Chlorides los ntawm cov kua qaub hydrochloric acid lossis calcium chloride tuaj yeem ua rau pitting hnyav.
* ** SULFFURIC thiab phosphoric acids: ** Thaum qee qhov siab ua kom muaj kev nyab xeeb, muaj kev kub siab dua thiab muaj kuab heev rau cov qib kawm zoo li 304.
* ** BLICE (sodium hypochlorite): ** Zoo oleidizing thiab chloride {{mess} nplua nuj, nws tuaj yeem ua rau pitting thiab kev ntxhov siab corrosion tawg.
