Vim li cas rau xeb ntawm hlau tsis xaim hlau

Stainless hlau yog ib hom alloy nrog hlau ua cov ntsiab raw, nws corrosion kuj yog chromium caij hauv alloy. Chromium ntsiab ntawm cov hlau tsis muaj fais fab rau daim duab ntxoo thiab cov nplua nuj nplua nuj chromium oxide zaj duab xis (cov yeeb yaj kiab), cov yeeb yaj kiab tau thaiv qhov infiltration ntawm oxygen molecules, kom cov hlau tsis muaj zog los tiv thaiv corrosion. Txawm li cas los xij, yog tias zaj yeeb yaj kiab pheej tas lawm, cov pa oxygen nyob rau hauv cov huab cua lossis kua yuav tas mus rau los yog cov hlau ntws hauv cov hlau uas muaj tshwm tuaj rau ntawm oxid hlau oxide, qhov hlau yuav ua mus ntxiv. Ntab zaj duab xis ntawm cov khoom uas tsis muaj stainless hlau tau raug pov tseg nyob rau hauv ntau cov ntaub ntawv, hom nyob hauv txhua txhua hnub yog:

1. Cov hlau nplaum stocks nrog lwm cov ntsiab lus hlau ntawm hmoov av los yog lwm cov hlau sib txuas ntawm txuas, nyob rau hauv cov av huab cua, txuas txuas thiab stainless steel condensation dej, ob rau hauv micro-cell, triggering ib qho tshuaj electrochemical, kev tiv thaiv ntawm zaj duab xis puas lawm, hu ua electrochemical corrosion.

2. Cov pob txha lim dej tsis zoo (xws li qhob lauj kaub tais diav, kua zaub kua ntses, phlegm, thiab lwm yam), nyob rau hauv cov ntaub ntawv ntawm cov pa, ua rau cov organic acids, cov organic acid ntev ntawm cov hlau qhov hlau.

3. Cov hlau tsis zoo ntawm cov tawv nqaij uas muaj qaub ncaug, alkali, ntsev tshuaj (xws li kho kom zoo nkauj phab ntsa ntawm alkali dej, cov kua tshuaj tsuag dej), ua rau thaj tsam corrosion.

4. Nyob rau hauv huab cua (xws li ib qho dej sulfide, carbon dioxide, nitric oxide cua), rooj plaub ntawm cov dej yawm dej, tsim cov tshuaj sulfuric acid, nitric acid, acetic acid kua taw, ua paug tshuaj lom neeg.