Stainless hlau yog ib yam khoom siv nrog lub ci ci ze rau ntawm daim iav. Nws yog ib qho nyuaj thiab txias rau qhov kov. Nws yog cov khoom siv zoo nkauj avant-garde thiab muaj cov yam ntxwv zoo xws li corrosion kuj, formability, compatibility thiab lub zog. Nws yog siv hauv kev lag luam hnyav thiab kev lag luam teeb. , kev lag luam khoom siv niaj hnub thiab lub tsev kho kom zoo nkauj thiab lwm yam kev lag luam.
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Stainless acid-resistant steel yog hu ua stainless hlau. Nws yog tsim los ntawm ob ntu: stainless hlau thiab acid-resistant steel. Hauv luv luv, cov hlau uas tuaj yeem tiv taus atmospheric corrosion yog hu ua stainless hlau, thaum hlau uas tuaj yeem tiv taus tshuaj lom neeg nruab nrab yog hu ua acid-resistant steel. Feem ntau hais lus, hlau nrog cov ntsiab lus chromium ntau dua 12% muaj cov yam ntxwv ntawm cov hlau tsis muaj steel. Stainless hlau tuaj yeem muab faib ua tsib pawg raws li nws cov microstructure tom qab kev kho cua sov: ferritic stainless hlau, martensitic stainless hlau, austenitic stainless hlau, Austenitic-ferritic duplex stainless hlau thiab nag lossis daus hardening stainless hlau.
Keeb kwm ntawm stainless hlau
Stainless hlau yog ib hom hluavtaws hlau uas yog tsim los ntawm hlau. Nws muaj kev tiv thaiv corrosion zoo heev thiab tsis yooj yim rau xeb. Nyob rau hauv thaum ntxov 1820s, tus kws tshawb fawb Askiv Faraday tau tsim cov khoom tsim, uas yog thawj kauj ruam ntawm kev yug ntawm stainless hlau. Qhov no yog cov hlau hluavtaws uas ntxiv ob peb feem pua ntawm chromium rau hlau los txhim kho nws cov corrosion kuj thiab tiv thaiv nws los ntawm xeb. Txawm li cas los xij, kev siv cov hlau tsis muaj steel siv ntau xyoo dhau los, thiab tom qab ntau yam kev tshawb fawb thiab kev txhim kho los ntawm ntau tus kws tshawb fawb, niaj hnub no stainless hlau tau tsim.
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Dab tsi yog stainless hlau
Stainless hlau yog cov hlau hluavtaws uas muaj hlau ua cov khoom tseem ceeb thiab tom qab ntawd ntxiv cov khoom siv xws li chromium lossis tweezers. Muaj ntau hom stainless hlau, uas yog cov hlau hluavtaws muaj 13% lossis 18% chromium, thiab cov hlau hluavtaws muaj 18% chromium thiab 8% npib tsib xee, uas feem ntau hu ua 13 chromium series, 18 chromium series, thiab 18-8 series. . Stainless hlau. Raws li qhov no, cov ntsiab lus ntawm chromium los yog npib tsib xee yog ntxiv, thiab molybdenum, tooj liab, titanium, thiab lwm yam ntxiv los txhim kho corrosion kuj, yog li ua tau ntau hom stainless hlau.
Hais txog cov khoom siv, qhov sib txawv loj tshaj plaws ntawm cov hlau tsis muaj steel thiab hlau yog cov hlau tsis muaj corrosion kuj zoo heev, uas yog, nws tsis yooj yim rau xeb, thiab yog vim li cas rau qhov no yog tias nws muaj cov khoom xws li chromium thiab npib tsib xee. Vim hais tias cov khoom chromium sib txuas nrog cov pa oxygen hauv huab cua kom ntxiv dag zog rau cov kub-plated nto thiab tsim cov yeeb yaj kiab uas tsis yog oxidized (hu ua oxide scale). Cov yeeb yaj kiab no tsis tsuas yog tiv thaiv oxidation, tab sis kuj tiv thaiv qhov chaw los ntawm ntau yam corrosion, thaum npib tsib xee-molybdenum txhim kho thiab ntxiv dag zog rau cov yeeb yaj kiab uas tsis yog oxidation. Yog li ntawd, qhov corrosion kuj ntawm stainless hlau, uas yog, qib ntawm xeb kuj, feem ntau txiav txim los ntawm tus nqi ntawm chromium, npib tsib xee, molybdenum, thiab lwm yam.