Muaj tsib yam yooj yim ntawmstainless hlau:austenitic, ferritic, martensitic, duplex, thiab nag lossis daus hardening.
(1) Austenitic stainless hlau tsis yog hlau nplaum, thiab cov qib sawv cev ntawm cov hlau yog 18% chromium ntxiv thiab qee qhov nyiaj npib tsib xee ntxiv los ua kom muaj kev tiv thaiv corrosion.Lawv tau siv dav hauv qib steel.
(2) Ferrite yog hlau nplaum, thiab chromium keeb yog nws cov ntsiab lus tseem ceeb, nrog rau feem ntawm 17%.Cov khoom no muaj oxidation zoo.
(3) Martensitic stainless hlau kuj yog sib nqus, cov ntsiab lus ntawm chromium feem ntau yog 13%, thiab nws muaj cov pa roj carbon uas tsim nyog, uas tuaj yeem ua kom tawv nqaij los ntawm quenching thiab tempering.
(4) Duplex stainless hlau muaj cov qauv sib xyaw ntawm ferrite thiab austenite, cov ntsiab lus ntawm chromium yog nyob nruab nrab ntawm 18% thiab 28%, thiab cov ntsiab lus ntawm nickel yog nruab nrab ntawm 4.5% thiab 8%.Lawv tiv taus chloride corrosion heev.Cov txiaj ntsig zoo.
(5)Cov ntsiab lus ntawm chromium nyob rau hauv nag lossis daus stainless hlau yog 17, thiab ib qho nyiaj npib tsib xee, tooj liab thiab niobium ntxiv, uas tuaj yeem ua kom tawv los ntawm nag lossis daus thiab kev laus.
Raws li cov qauv metallographic, nws tuaj yeem muab faib ua:
(1)Ferritic stainless hlau (400 series), chromium stainless hlau, feem ntau sawv cev los ntawm Gr13, G17, Gr27-30;
(2)Austenitic stainless hlau (300 series), chromium-nickel stainless hlau, feem ntau sawv cev los ntawm 304, 316, 321, thiab lwm yam;
(3)Martensitic stainless hlau (200 series), chromium-manganese stainless hlau, siab carbon ntsiab lus, feem ntau sawv cev los ntawm 1Gr13, thiab lwm yam.
Post lub sij hawm: Sep-28-2022