Pasi pemamiriro echisikigo, 10-20A oxide firimu ichaumbwa pamusoro pezvikamu zvesimbi nekuda kwekusangana neokisijeni mumhepo.Munguva yekugadzirwa kwemafirimu echisikigo, zvichienderana nemamiriro emuviri esimbi pachayo, nzvimbo yepasi uye oxidation mamiriro, mamwe emafirimu eoxide akaumbwa akatetepa, mamwe ane dense uye akakwana, uye mamwe akasununguka uye haana kukwana.Muzviitiko zvakawanda, firimu reoxide rakagadzirwa harigone kudzivirira simbi kubva pakuora.
Kune dzakawanda nzira dzekurapa oxidation dzesimbi, dzinosanganisira alkaline kemikari oxidation, alkali-isina oxidation, tembiricha yakakwira gasi oxidation uye electrochemical oxidation.Parizvino, iyo alkaline makemikari oxidation nzira inoshandiswa zvakanyanya muindasitiri.(Uyewo acid oxidation nzira)
Hunhu hweiyo oxide firimu: yakanaka ruvara, hapana hydrogen embrittlement, elasticity, nhete firimu (0.5-1.5um), hapana chakakosha pakukura uye nekurongeka kwezvikamu, uye zvakare ine imwe mhedzisiro yekubvisa kushushikana kunogadzirwa mushure mekupisa. kurapwa.
Blackening kurapwa imhando yepamusoro oxidation kurapwa nzira.Nhengo dzesimbi dzinoiswa mune yakanyatsogadziriswa mhinduro yealkali uye oxidant, inopisa uye yakasvibiswa pane imwe tembiricha, kuitira kuti jira reyunifomu uye gobvu resimbi rinoumbwa uye rakanyatsobatanidzwa kune nheyo yesimbi.Maitiro eiyo ferric oxide firimu inonzi blackening.Pamusana pesimba rezvinhu zvakasiyana-siyana mukushanda, ruvara rwefirimu iyi ibhuruu-dema, dema, tsvuku-tsvuku, tani, nezvimwewo.
Chinangwa che blackening treatment chinonyanya kuve nemapoinzi matatu anotevera:
1. Anti-ngura mugumisiro pamusoro simbi pamusoro.
2. Wedzera kunaka uye kupenya kwesimbi yepamusoro.
3. Kupisa panguva yekusviba kunobatsira kuderedza kushungurudzika mubasa rekushanda.
Nekuda kwekuti kusviba kurapwa kune mhedzisiro yataurwa pamusoro, mutengo wakaderera, uye mhando yakakwira, inoshandiswa zvakanyanya musimbi pamusoro pekurapa uye kudzivirira ngura pakati pemaitiro.
Nguva yekutumira: Aug-24-2022