Ib rab riam sib nqus, ntsia rau ntawm phab ntsa chav ua noj, tso cai rau koj tso riam rau nws. Qhov no tsis tsuas yog npaj cov riam, ua kom zoo nkauj ntawm ib puag ncig, txo kev nyab xeeb kev nyab xeeb, tab sis kuj tiv thaiv dej tsub zuj zuj thiab corrosion. Tab sis cov neeg tuav riam phom puas muaj kev nyab xeeb? Cia peb kawm ua ke!
Ib rab riam sib nqus yuav tsis tawg ntawm nws tus kheej tshwj tsis yog txhob txwm ua kom puas. Cov hlau nplaum yuav tsis ploj ntawm nws tus kheej. Nws ua haujlwm nrog feem ntau riam, tab sis nws yuav tsis nyiam riam ua los ntawm austenitic stainless hlau. Nws tsis muaj teeb meem nyiam riam ua los ntawm martensitic stainless hlau. Sib nqus riam tuav hauv chav ua noj tuaj yeem muaj kev nyab xeeb thiab yooj yim tuav cov riam, ua rau lawv nkag tau yooj yim. Qhov zoo tshaj plaws yog tias lawv khaws cov hniav kom qhuav thiab xeb - dawb. Yog li ntawd, lawv thiaj li nrov. Stainless hlau riam lawv tus kheej tsis yog sib nqus, tab sis lawv tuaj yeem nyiam los ntawm cov tuav riam phom sib nqus. Hlau ore, tom qab tau smelted nyob rau hauv ib lub qhov cub tawg kom tshem tawm impurities, ua hlau. Tom qab ntawd, tus nqi tsim nyog ntawm chromium ntxiv. Thaum cov ntsiab lus chromium nce mus txog ib feem pua, cov hlau corrosion kuj tau hloov pauv tam sim ntawd, los ntawm kev pheej hmoo rau xeb kom tsis xeb, thiab los ntawm tsis yog{11}}corrosive mus rau corrosion{12}}resistant. Martensitic stainless hlau muaj cov ntsiab lus carbon siab, thaum austenitic stainless hlau muaj cov ntsiab lus qis carbon. Thaum sib tsoo ob hom stainless hlau nrog lub log abrasive, ib qho uas ua rau ntau lub txim yog martensitic stainless hlau, thiab ib qho uas ua rau qis qis yog austenitic stainless hlau. Xwb, cov hlau nplaum tuaj yeem siv los nyiam ob hom stainless hlau; Ib qho uas nyiam rau cov hlau nplaum yog martensitic stainless hlau, thaum ib qho uas tsis nyiam yog austenitic stainless hlau. Yog tias ob hom stainless hlau raug quenched, ib qho uas muaj zog dua yog martensitic stainless hlau, thiab ib qho uas qis dua yog austenitic stainless hlau.
