Cov txheej txheem tseem ceeb ntawm Kev Kho Hlau Oxidation

Kev kho oxidation ntawm cov hlau yog tsim los ntawm kev tiv thaiv oxide zaj duab xis ntawm cov hlau los ntawm kev sib cuam tshuam nrog cov pa oxygen lossis oxidants, uas tiv thaiv cov hlau corrosion. Cov txheej txheem oxidation muaj xws li thermal oxidation, alkaline oxidation, thiab acidic oxidation

Kev kho oxidation ntawm cov hlau yog tsim los ntawm kev tiv thaiv oxide zaj duab xis ntawm cov hlau los ntawm kev sib cuam tshuam nrog cov pa oxygen lossis oxidants, uas tiv thaiv cov hlau corrosion. Cov txheej txheem oxidation muaj xws li thermal oxidation, alkaline oxidation, acidic oxidation (rau dub hlau), tshuaj oxidation, anodic oxidation (rau non-ferrous hlau), thiab lwm yam.

Thaum tshav kub kub cov khoom siv hlau rau 600 ℃ ~ 650 ℃ siv cov txheej txheem thermal oxidation, thiab tom qab ntawd kho lawv nrog cov pa kub thiab txo cov neeg ua haujlwm. Lwm txoj hauv kev yog raus cov khoom siv hlau hauv molten alkali hlau ntsev ntawm kwv yees li 300 ℃ rau kev kho mob.

Thaum siv cov txheej txheem alkaline oxidation, muab cov khoom tso rau hauv cov tshuaj npaj thiab ua kom sov rau 135 ℃ txog 155 ℃. Lub sijhawm ntawm kev kho mob yog nyob ntawm cov ntsiab lus carbon hauv cov khoom. Tom qab kev kho oxidation ntawm cov khoom hlau, yaug lawv nrog xab npum dej uas muaj 15g / L txog 20g / L ntawm 60 ℃ txog 80 ℃ rau 2 mus rau 5 feeb. Tom qab ntawd yaug lawv nrog dej txias thiab dej kub raws li thiab tshuab ziab los yog qhuav rau 5 mus rau 10 feeb (ntawm qhov kub ntawm 80 ℃ txog 90 ℃).

Txoj kev 3 acid oxidation yuav tsum muab cov khoom tso rau hauv cov kua qaub rau kev kho mob. Piv nrog alkaline oxidation txoj kev, acidic oxidation txoj kev yog ntau yig. Cov yeeb yaj kiab tiv thaiv tsim tawm ntawm cov hlau nto tom qab kev kho mob muaj kev tiv thaiv corrosion ntau dua thiab cov neeg kho tshuab lub zog dua li cov zaj duab xis nyias tsim tom qab kev kho alkaline oxidation

Txoj kev oxidation tshuaj yog tsim nyog rau kev kho oxidation ntawm cov hlau tsis muaj hlau xws li txhuas, tooj liab, magnesium, thiab lawv cov alloys. Txoj kev ua haujlwm yog muab cov khoom tso rau hauv cov tshuaj npaj, thiab tom qab qee qhov oxidation cov tshuaj tiv thaiv ntawm qhov kub thiab txias rau qee lub sijhawm, cov yeeb yaj kiab tiv thaiv yog tsim, uas tuaj yeem ntxuav thiab qhuav.

Txoj kev Anodizing yog lwm txoj hauv kev rau oxidation ntawm cov hlau tsis muaj hlau. Nws yog cov txheej txheem ntawm kev siv hlau qhov chaw ua anodes thiab electrolytic txoj kev los tsim oxide zaj duab xis rau ntawm lawv qhov chaw. Hom oxide zaj duab xis no tuaj yeem ua ib zaj duab xis passivation ntawm cov hlau thiab txheej zaj duab xis, nrog rau kev ua kom lub zog sib txuas ntawm cov coatings thiab hlau, txo cov kev nkag mus ntawm cov dej noo, thiab yog li txuas ntxiv kev pab cuam lub neej ntawm coatings. Nws yog dav siv nyob rau hauv qab txheej ntawm painting.