Iyo oxidation kurapwa kwesimbi ndiko kuumbwa kweinodzivirira oxide firimu pamusoro pesimbi kuburikidza nekudyidzana neokisijeni kana oxidants, iyo inodzivirira simbi corrosion. Iyo oxidation nzira dzinosanganisira thermal oxidation, alkaline oxidation, uye acidic oxidation.
Iyo oxidation kurapwa kwesimbi ndiko kuumbwa kweinodzivirira oxide firimu pamusoro pesimbi kuburikidza nekudyidzana neokisijeni kana oxidants, iyo inodzivirira simbi corrosion. Iyo oxidation nzira dzinosanganisira thermal oxidation, alkaline oxidation, acidic oxidation (yesimbi nhema), kemikari oxidation, anodic oxidation (yesimbi isiri-ferrous), nezvimwe.
Kupisa zvigadzirwa zvesimbi kusvika 600 ℃ ~ 650 ℃ uchishandisa thermal oxidation nzira, wobva wazvibata nehutsi hunopisa uye zvinoderedza vamiririri. Imwe nzira ndeyekunyudza zvigadzirwa zvesimbi mune yakanyungudutswa alkali simbi munyu paanenge 300 ℃ kurapwa.
Paunenge uchishandisa nzira yealkaline oxidation, nyudza zvikamu mumhinduro yakagadzirwa uye kudziisa kusvika 135 ℃ kusvika 155 ℃. Nguva yekurapa inobva pane carbon content muzvikamu. Mushure mekugadzirisa oxidation yezvikamu zvesimbi, sukurudza nemvura ine sipo ine 15g/L kusvika 20g/L pa60 ℃ kusvika 80 ℃ kwemaminetsi maviri kusvika mashanu. Wobva waageza nemvura inotonhora uye inopisa zvichiteerana woiomesa kana kuomesa kwemaminitsi mashanu kusvika gumi (patembiricha ye80 ℃ kusvika 90 ℃).
Iyo 3 acid oxidation nzira inosanganisira kuisa zvikamu muine acidic mhinduro yekurapwa. Kuenzaniswa nealkaline oxidation nzira, acidic oxidation nzira inodhura zvakanyanya. Iyo firimu inodzivirira inogadzirwa pamusoro pesimbi mushure mekurapwa ine yakakwira corrosion kuramba uye simba remagetsi kupfuura firimu rakatetepa rinogadzirwa mushure me alkaline oxidation kurapwa.
Iyo kemikari oxidation nzira inonyanya kukodzera kurapwa kweoxidation yeasina-ferrous simbi sealuminium, mhangura, magnesium, uye alloys avo. Iyo nzira yekugadzira ndeyekuisa zvikamu mumhinduro yakagadzirirwa, uye mushure meimwe oxidation reaction pane imwe tembiricha kweimwe nguva yenguva, firimu rinodzivirira rinoumbwa, iro rinogona kubva racheneswa nekuomeswa.
Anodizing nzira ndiyo imwe nzira yeoxidation yeasina-ferrous simbi. Ndiyo nzira yekushandisa simbi zvidimbu seanode uye electrolytic nzira dzekugadzira oxide mafirimu panzvimbo yavo. Rudzi urwu rweoxide firimu runogona kushanda senge passivation firimu pakati pesimbi uye yekuputira firimu, pamwe nekuwedzera simba rekubatanidza pakati pemachira nesimbi, kuderedza kupinda kwehunyoro, uye nekudaro kuwedzera hupenyu hwebasa rejasi. Inoshandiswa zvakanyanya muchikamu chepasi chekupenda.
Nguva yekutumira: Zvita-16-2024
