Passivation Ntawm Stainless Hlau Yeeb Nkab

Corrosion tsis kam yog qhov kev ua tau zoo ntawm cov hlau tsis muaj steel thiab cov kav hlau tsis muaj steel uas txawv ntawm lwm hom hlau thiab cov kav hlau zoo tib yam. Kev tiv thaiv corrosion ntawm stainless hlau nyob ntawm nws cov tshuaj muaj pes tsawg leeg, qhov chaw saum npoo thiab ib puag ncig. Nyob rau hauv tej yam kev mob ntawm kev siv, uas yog, tom qab lub steel hom thiab ib puag ncig tej yam kev mob raug txiav txim, lub prerequisite rau kom ntseeg tau corrosion kuj yog tsim ib tug uniform thiab tuab passivation zaj duab xis rau ib tug huv si thiab du nto, thiab lub zos kev puas tsuaj ntawm passivation zaj duab xis yog. lub hauv paus ua rau lub zos corrosion. vim li cas.

Cov yam ntxwv ntawm kev tsim cov zaj duab xis passivation: Cov zaj duab xis passivation tsim nyob rau saum npoo ntawm stainless hlau ntawm chav tsev kub tsis yog "tiag" oxide zaj duab xis, thiab nws cov qauv ntawm lub cev thiab tshuaj tseem tsis tau lees paub tag nrho. Nws yog feem ntau hu ua composite oxide los yog hydrogen oxide zaj duab xis. Cov zaj duab xis passivation tsim spontaneously nyob rau saum npoo ntawm ntshiab stainless hlau nyob rau hauv cov huab cua los yog lwm yam oxygen-muaj ib puag ncig muaj nws tus kheej-kho cov khoom. Chav tsev kub, purification thiab aerobic ib puag ncig yog peb lub ntsiab lus tseem ceeb lossis cov ntsiab lus rau kev tsim cov yeeb yaj kiab passivation. Cov kav hlau tsis muaj steel thiab tag nrho cov khoom siv hlau tsis huv yog raug rau kev ua kom huv los yog kev kho mob ua ntej tawm hauv lub Hoobkas los tsim cov purification zaj duab xis rau saum npoo kom ntseeg tau tias lawv cov corrosion kuj.

Kev kis kab mob thiab kev puas tsuaj ntawm cov zaj duab xis passivation: Lub passivation nto ntawm cov yeeb nkab steel hlau yog qhov ua tau ib zaj duab xis nyias nyias uas muaj qhov tuab ntawm tsuas yog 1-3 nanometers. Nws cov kab mob hauv zos thiab kev puas tsuaj yog qhov ua rau cov hlau tsis muaj corrosion.

Kev tiv thaiv zaj duab xis passivation: Thaum lub sijhawm tsim khoom, khaws cia, kev thauj mus los thiab siv cov kav hlau tsis muaj steel, tshwj xeeb tshaj yog thaum rov ua dua, yuav tsum tau them nyiaj rau kev tiv thaiv ntawm qhov chaw passivation zaj duab xis kom tiv thaiv kev sib tsoo, tiv tauj nrog carbon steel strapping lossis slings, thiab forklift brackets. Kev khaws cia hauv av, dej phwj tuaj, thiab lwm yam.

Stainless hlau kav yuav tsum tau ntxuav los ntawm cov txheej txheem tshwj xeeb xws li pickling thiab descaling, passivation los yog electropolishing ua ntej tawm hauv lub Hoobkas kom tshem tawm oxide scale, hlau ions thiab lwm yam txawv teb chaws teeb meem ntawm qhov chaw kom tau ib tug passivated nto. Cov tshuaj inert thiab passivated nto ib txwm tsim nyob rau saum npoo ntawm cov kav dej huv stainless hlau hauv huab cua lossis lwm qhov chaw uas muaj cov pa oxygen yog qhov tseem ceeb rau kev tiv thaiv corrosion ntawm stainless hlau kav.