Kurapa simbi dzine oxidation kuumbwa kwefirimu rekudzivirira oxide pamusoro pesimbi kuburikidza nekubatana neokisijeni kana ma oxidants, izvo zvinodzivirira ngura yesimbi. Nzira dze oxidation dzinosanganisira thermal oxidation, alkaline oxidation, uye acidic oxidation.
Kurapa simbi ne oxidation kuumbwa kwefirimu re protective oxide pamusoro pesimbi kuburikidza nekubatana ne oxygen kana oxidants, izvo zvinodzivirira ngura yesimbi. Nzira dze oxidation dzinosanganisira thermal oxidation, alkaline oxidation, acidic oxidation (yesimbi nhema), chemical oxidation, anodic oxidation (yesimbi dzisina ferrous), nezvimwewo.
Pisa zvigadzirwa zvesimbi kusvika 600 ℃ ~ 650 ℃ uchishandisa nzira yekupisa, wozozvishandisa nekupisa kwemhepo uye zvinoderedza kupisa. Imwe nzira ndeyekunyika zvigadzirwa zvesimbi mumunyu wesimbi wakanyungudutswa pa300 ℃ kuti zvirapwe.
Kana uchishandisa nzira yealkaline oxidation, nyika zvikamu zvacho mumushonga wakagadzirwa wozvipisa kusvika 135 ℃ kusvika 155 ℃. Nguva yekurapwa inoenderana nehuwandu hwekabhoni muzvikamu zvacho. Mushure mekurapwa kwezvikamu zvesimbi, zvisuke nemvura ine sipo ine 15g/L kusvika 20g/L pa60 ℃ kusvika 80 ℃ kwemaminitsi maviri kusvika mashanu. Wozosuka nemvura inotonhora neinodziya wozvipukuta kana kuzviomesa kwemaminitsi mashanu kusvika gumi (patembiricha ye80 ℃ kusvika 90 ℃).
Nzira ye3 yekuisa acid mu acid solution inosanganisira kuisa zvikamu mu acid solution yekurapa. Kana tichienzanisa ne alkaline oxidation method, acidic oxidation method inodhura zvishoma. Firimu rekudzivirira rinogadzirwa pamusoro pesimbi mushure mekurapa rine simba rekudzivirira ngura uye simba remakanika kupfuura firimu rakatetepa rinogadzirwa mushure mekurapa alkaline oxidation.
Nzira yekuoxidation yemakemikari inonyanya kukodzera kurapwa kweoxidation yesimbi dzisina ferrous dzakadai sealuminium, copper, magnesium, uye alloys dzadzo. Nzira yekugadzirisa ndeyekuisa zvikamu mumhinduro yakagadzirirwa, uye mushure mekuita oxidation pane imwe tembiricha kwenguva yakati, firimu rekudzivirira rinoumbwa, iro rinogona kucheneswa nekuomeswa.
Nzira yeanodizing imwe nzira yekubvisa oxidation yesimbi dzisiri dzesimbi. Inzira yekushandisa zvikamu zvesimbi seanode uye nzira dze electrolytic kugadzira mafirimu e oxide pamusoro pawo. Rudzi urwu rwefirimu re oxide rinogona kushanda sefirimu re passivation pakati pesimbi nefirimu re coating, pamwe nekuwedzera simba rekubatana pakati pe coating nesimbi, kuderedza kupinda kwehunyoro, uye nekudaro kuwedzera hupenyu hwe coating. Inoshandiswa zvakanyanya muchikamu chepasi chekupenda.
Nguva yekutumira: Zvita-16-2024
