Cov pa roj carbon steel thiab stainless hlau yog ob hom hlau uas siv rau cov hom phiaj sib txawv hauv ntau qhov kev lag luam. Txawm hais tias ob qho tib si muaj hlau ua lawv cov khoom tseem ceeb, lawv muaj qhov sib txawv tseem ceeb ntawm cov tsos, kev tiv thaiv corrosion, hnav tsis kam thiab nqi. Cia peb delve rau hauv kev sib piv ntawm ob steels.
1. Qhov txawv ntawm qhov tshwm sim.
Stainless hlau yog tsim los ntawm cov hlau xws li chromium thiab npib tsib xee thiab nws muaj cov xim xim nyiaj ntau dua. Nws muaj lub ntsej muag du nrog lub zog hlau nplaum, ua rau nws zoo tagnrho rau cov ntawv thov uas xav tau qhov zoo nkauj tiav.
Ntawm qhov tod tes, cov pa roj carbon steel, uas yog tsim los ntawm cov pa roj carbon thiab hlau alloys, yog xim dub dua thiab muaj qhov rougher saum npoo piv rau stainless hlau. Cov pa roj carbon steel yuav tsis zoo li qhov pom kev zoo li cov hlau tsis muaj steel, tab sis nws ua haujlwm zoo hauv cov ntawv thov uas qhov tsos tsis yog qhov tseem ceeb.
2. Corrosion kuj.
Ib qho ntawm qhov sib txawv tseem ceeb ntawm carbon steel thiab stainless hlau yog lawv cov corrosion kuj. Txij li ob qho tib si muaj hlau, lawv oxidize thiab xeb yooj yim. Txawm li cas los xij, stainless hlau muaj qhov zoo ntxiv vim muaj chromium.
Chromium yooj yim reacts nrog oxygen los tsim ib txheej tiv thaiv ntawm chromium oxide nyob rau saum npoo ntawm stainless hlau. Cov txheej no ua raws li kev thaiv kev tiv thaiv ntxiv degradation thiab corrosion. Hauv qhov sib piv, cov ntsiab lus chromium tsawg ntawm cov hlau tsis yog qhov tsim nyog rau kev tsim cov txheej txheem tiv thaiv, ua rau nws muaj kev cuam tshuam rau corrosion ntau dua li cov hlau tsis muaj steel.
3. Hnav tsis kam.
Piv nrog rau cov hlau tsis muaj steel, carbon hlau feem ntau muaj qhov nyuaj dua, ua rau nws hnav ntau dua. Txawm li cas los xij, ntau dua hardness ntawm carbon steel los ntawm tus nqi ntawm qhov hnyav nce thiab txo cov yas. Stainless hlau, thaum tsis hnav resistant li carbon steel, muaj qhov sib npaug ntawm hardness thiab ductility uas ua rau nws haum rau ntau yam kev siv.
4. Nqe sib txawv.
Cov nqi khoom siv yog lwm qhov sib txawv ntawm cov pa roj carbon thiab stainless hlau. Kev tsim cov hlau tsis muaj steel muaj qhov sib ntxiv ntawm ntau yam alloys, xws li chromium thiab npib tsib xee, ua rau tus nqi siab dua li carbon steel.
Hauv qhov sib piv, carbon steel tsis xav tau qhov sib ntxiv ntawm ntau yam alloys, ua rau nws raug nqi ntau dua. Yog li ntawd, carbon steel feem ntau nyiam nyob rau hauv cov ntawv thov uas tus nqi yog qhov tseem ceeb.
Hauv kev xaus, ob qho tib si carbon thiab stainless hlau muaj lawv tus kheej cov txiaj ntsig thiab kev siv. Stainless hlau ua tau zoo nyob rau hauv qhov tsos thiab corrosion kuj, thaum carbon steel qhia ntau dua hnav tsis kam thiab pheej yig. Qhov kev xaiv ntawm ob yog nyob ntawm qhov kev xav tau tshwj xeeb ntawm qhov project lossis daim ntawv thov ntawm tes.
