Ngemva kokuba insimbi iphathwe nge-oxidizing medium, izinga lokugqwala kwensimbi liphansi kakhulu kunalelo lensimbi yokuqala engaphenduliwe, ebizwa ngokuthi i-passivation yensimbi.
Ngokuvamile, i-passivation empeleni iphendulela indawo yensimbi esebenzayo ibe indawo engasebenzi ngokusabela kwamakhemikhali esixazululo se-passivation, ukuze kuvinjelwe izinto ezibhubhisayo zangaphandle ukuthi zisabele endaweni yensimbi futhi kuzuzwe inhloso yokwelula isikhathi sokugqwala kwensimbi. (Kungakho umkhiqizo kulula ukugqwala ngaphambi kokudlula, kodwa hhayi ngemva kokudlula. Isibonelo, insimbi izoncibilika ngokushesha ekunciphiseni i-nitric acid, kodwa umkhuba wokuncibilika ku-nitric acid egxilile cishe iyama ngokuphelele; I-Aluminium ayizinzile ekuxubeni i-nitric acid, kodwa iziqukathi ze-aluminium zingasetshenziswa ukugcina i-nitric acid egxilile.
Isimiso se-passivation
Umgomo we-passivation ungachazwa ngethiyori yefilimu emincane, okungukuthi, kucatshangwa ukuthi i-passivation ibangelwa ukuxhumana phakathi kwensimbi ne-oxidizing medium, ezokhiqiza ifilimu encane kakhulu (mayelana ne-1nm), eminyene, embozwe kahle. endaweni yensimbi, engaxhunywa ngokuqinile endaweni yensimbi. Le filimu ikhona njengesigaba esizimele, ngokuvamile inhlanganisela ye-oxygen nensimbi.
Ingakwazi ukuhlukanisa ngokuphelele insimbi endaweni ebolayo, futhi ivimbele insimbi ukuthi ingathintani ngokuqondile nendawo ebolayo, ukuze insimbi iyeke ukuncibilika futhi yakhe isimo sokungenzi lutho ukuze kuzuzwe injongo yokuvimbela ukugqwala nokugqwala.
Izimpawu nezinzuzo ze-passivation:
Isixazululo se-stainless steel passivation asishintshi usayizi, umbala nokubukeka kwezikulufu; Ayikho ifilimu kawoyela enamathiselwe, futhi ukumelana nokugqwala kungcono futhi kuzinzile (ukwelashwa kwe-passivation kuyisinqumo esingcono kakhulu sokuthatha indawo yokwelashwa kwendabuko okulwa nokugqwala ukuze kucwiliswe uwoyela ophikisana nokugqwala). Asikho isidingo semishini ekhethekile kanye nezimo eziqinile zokucubungula, kuphela iziqukathi ezimbalwa zepulasitiki noma amathangi ensimbi engagqwali, futhi izindleko ziphansi (2/3 ngaphansi kokucubungula ukukhishwa); Ukusebenza kulula, okuhlangabezana kakhulu nezidingo zamabhizinisi, futhi kuqinisekisa ukuthi wonke umuntu angakwenza, wonke umuntu angakwenza, futhi angakwenza nganoma yisiphi isikhathi. Vele ucwilise izikulufu kusixazululo sensimbi engenasici yomkhiqizo we-Senyuan imizuzu engama-30 ekamelweni lokushisa.
I-Passivation:
Ngemuva kokuthi isikulufu sesidlulile, kuzokwakhiwa ifilimu eliminyene kakhulu le-passivation elinembobo enhle phezu kwesikulufu, elingenza isikulufu simelane nokugqwala, kuze kufike emahoreni angaphezu kuka-500 okuhlolwa kwesifutho sikasawoti.
Inqubo ye-Screw passivation:
Okokuqala gcoba izikulufu-zihlambulule ngamanzi agelezayo-zisebenze-zihlanza ngamanzi agelezayo-zidlulise (imizuzu engaphezu kwe-30)-zihlanza ngamanzi agelezayo-zihlanza ngamanzi a-ultrapure-zomise futhi uzipakishe.
Isikhathi sokuthumela: Nov-29-2022