Stainless hlau yog ib yam ntawm cov hlau nyhav siab uas tuaj yeem tiv taus corrosion hauv huab cua lossis hauv tshuaj lom neeg cov tshuaj lom neeg. Qhov laj thawj tseem ceeb yog vim li cas cov hlau tsis muaj xeb yog tshuaj tiv thaiv yog tias chromium hlau hauv nws cov lus muaj lub luag haujlwm zoo nkauj. Ntawm ib sab tes, cov xaim chromium nyias zaj duab xis yog tsim nyob rau saum npoo ntawm hlau kom cais tawm cov pa uas tau nkag rau hauv cov hlau los ntawm cov hlau; ntawm qhov tod tes, qhov sib ntxiv ntawm cov chromium ua rau kom muaj peev xwm ntawm cov hlau ua tau kua tov electrode.
Stainless hlau feem ntau muab faib ua:
1. Ferritic stainless hlau. Muaj li 12% mus rau 30% chromium. Nws qhov kev txhim kho corrosion, toughness thiab weldability nce nrog qhov nce ntawm chromium cov ntsiab lus, thiab nws qhov kev cuam tshuam rau chloride kev nyuaj siab corrosion zoo dua li lwm hom stainless hlau.
2. Austenitic stainless hlau. Nws muaj ntau dua 18% chromium, thiab tseem muaj kwv yees li 8% npib tsib xee thiab ib qho me me ntawm cov khoom xws li molybdenum, titanium thiab nitrogen. Kev ua tiav zoo, tiv taus corrosion los ntawm ntau yam xov xwm.
3. Austenitic-ferritic duplex stainless hlau. Nws muaj qhov zoo ntawm austenitic thiab ferritic stainless hlau, thiab muaj superplasticity.
4. Martensitic stainless hlau. Muaj zog, tab sis tsis zoo yas thiab weldability.