Yog vim li cas rau corrosion ntawm hluav taws xob cua sov raj

Yog vim li cas rau corrosion ntawm hluav taws xob cua sov raj

Stainless hlau kuj tuaj yeem xeb nyob rau hauv qee yam mob. Stainless hlau muaj peev xwm tiv taus atmospheric oxidation, uas yog xeb kuj, thiab kuj muaj peev xwm tiv thaiv corrosion nyob rau hauv xov xwm uas muaj acids, alkalis, thiab ntsev, uas yog corrosion kuj. Tab sis nws cov corrosion kuj txawv nrog cov tshuaj muaj pes tsawg leeg, kev sib nrig sib lub xeev, kev siv tej yam kev mob, thiab hom ntawm ib puag ncig nruab nrab ntawm cov hlau nws tus kheej. Thaum raug cov tshuaj chlorine los yog hnyav ib puag ncig, tshwj xeeb tshaj yog thaum cov txheej txheem passivation ntawm nws qhov chaw yog mechanically lossis chemically puas, nws yog feem ntau xeb dua li niaj zaus. Piv txwv li, 304 steel kav muaj cov xeb zoo heev nyob rau hauv qhov chaw qhuav thiab huv si, tab sis thaum tsiv mus rau thaj chaw ntug dej hiav txwv, lawv sai sai xeb hauv hiav txwv huab cua uas muaj cov ntsev ntau; Txawm li cas los xij, 316 steel kav ua tau zoo. Yog li ntawd, tsis yog txhua hom stainless hlau tuaj yeem tiv taus corrosion thiab xeb hauv ib puag ncig.

(Kev sib txuas: Cov hlau tsis muaj zog corrosion kuj txo qis nrog qhov nce ntawm cov ntsiab lus carbon. Feem ntau cov hlau tsis muaj cov ntsiab lus carbon tsawg, thiab qee cov hlau tseem muaj cov ntsiab lus carbon hauv qab 0.03% (xws li 00Cr12 Lub ntsiab alloying nyob rau hauv stainless hlau yog chromium, uas yog lub hauv paus ntsiab lus uas ua rau cov hlau tsis muaj corrosion kuj. oxide zaj duab xis nyob rau saum npoo ntawm cov hlau, uas tuaj yeem tiv thaiv corrosion ntxiv ntawm cov hlau substrate. Ntxiv nrog rau chromium, feem ntau siv alloying ntsiab muaj xws li npib tsib xee, molybdenum, titanium, niobium, tooj liab, nitrogen, thiab lwm yam. siv rau cov qauv thiab cov khoom ntawm stainless hlau

Txoj kev kho xeb rau stainless hlau

1. Cov txheej txheem tshuaj:

Siv cov tshuaj tsuag los yog kua qaub ntxuav kom pab cov xeb xeb kom rov ua dua los ua cov chromium oxide zaj duab xis, thiaj li ua kom rov ua kom cov corrosion kuj. Siv cov kua qaub kua qaub rau saum npoo kom kho, nrog rau zaj duab xis tuab ntawm {{0}}.5-2mm. Lub sijhawm tshuaj tiv thaiv dav dav yog 3-10 feeb lossis ntau dua. Thaum siv qis dua 0 degree lossis ntawm thaj chaw uas muaj cov tawv oxide tuab, lub sijhawm yuav tsum raug ncua kom tsim nyog. Nws yog qhov zoo tshaj plaws los txhuam ob peb zaug thaum lub sijhawm kho. Tom qab cov oxide saum npoo ntawm daim tawv nqaij raug tshem tawm tag, yaug nws nrog dej huv (cov dej txiv qaub lossis dej alkaline zoo dua) kom tsis txhob xeb. Tom qab pickling, nws yog ib qho tseem ceeb kom yaug kom zoo nrog dej huv thiaj li tshem tawm tag nrho cov pa phem thiab acid residues. Tom qab tag nrho cov txheej txheem, siv cov cuab yeej polishing los rov polish thiab foob nrog polishing ciab. Rau cov cheeb tsam uas muaj xeb me ntsis, 1: 1 sib xyaw ntawm cov roj av thiab cov roj cav kuj tuaj yeem siv los so cov pob xeb nrog cov ntaub huv.

2. Mechanical method:

Kev tua blasting, tua blasting nrog iav los yog ceramic hais, immersion, txhuam, thiab polishing. Nws muaj peev xwm tshem tawm cov kab mob uas tshwm sim los ntawm cov khoom siv yav dhau los tshem tawm, cov ntaub ntawv polishing, lossis cov ntaub ntawv pov tseg uas siv cov cuab yeej siv tshuab. Txhua hom kev ua qias tuaj, tshwj xeeb tshaj yog cov hlau txawv teb chaws, tuaj yeem dhau los ua qhov chaw ntawm corrosion, tshwj xeeb tshaj yog nyob rau hauv qhov chaw ntub dej. Yog li ntawd, nws yog qhov zoo tshaj plaws rau cov tshuab ntxhua khaub ncaws kom ua tiav kev tu hauv qab qhuav. Kev siv cov txheej txheem siv tshuab tsuas tuaj yeem ntxuav qhov chaw thiab tsis tuaj yeem hloov kho corrosion ntawm cov khoom nws tus kheej. Yog li ntawd, nws raug nquahu kom siv cov cuab yeej polishing los rov polish thiab foob nrog polishing siv quav ciab tom qab kho tshuab.

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