Mushure mekunge simbi yabatwa neoxidizing medium, chiyero chekuora kwesimbi chakanyanya kuderera pane chepakutanga simbi isina kugadzirwa, iyo inonzi passivation yesimbi.
Kazhinji kutaura, passivation inoshandura iyo inoshanda simbi pamusoro kuita inert surface kuburikidza nekemikari reaction ye passivation solution, kuitira kudzivirira kunze kunoparadza zvinhu kubva pakusangana nepamusoro pesimbi uye kuzadzisa chinangwa chekurebesa simbi yekuora nguva. (Ndosaka chigadzirwa chiri nyore kuita ngura pamberi pe passivation, asi kwete mushure mokunge passivation. Somuenzaniso, iron ichakurumidza kunyunguduka mu dilute nitric acid, asi chiitiko chekunyunguduka mu concentrated nitric acid inenge yamira zvachose; Aluminium haina kugadzikana mu dilute nitric acid, asi aruminiyamu midziyo inogona kushandiswa kuchengeta concentrated nitric acid.
Principle of passivation
Nheyo yekupfuura inogona kutsanangurwa neiyo yakaonda firimu dzidziso, ndiko kuti, inofungidzirwa kuti passivation inokonzerwa nekudyidzana pakati pesimbi uye oxidizing svikiro, iyo inoburitsa yakanyanya kutetepa (inenge 1nm), dense, yakavharwa zvakanaka passivation firimu. pamusoro pesimbi, iyo inogona kusungirirwa zvakasimba kune simbi yesimbi. Iyi firimu iripo sechikamu chakazvimirira, kazhinji musanganiswa weokisijeni nesimbi.
Inogona kuparadzanisa zvachose simbi kubva kune inoparadza, uye kudzivirira simbi kuti isasangana zvakananga neyakaora svikiro, zvekuti simbi inomira kunyungudika uye inoumba passive state kuti iite chinangwa chekudzivirira ngura uye ngura.
Hunhu uye zvakanakira passivation:
Stainless simbi passivation solution haichinje saizi, ruvara uye kutaridzika kwe screws; Iko hakuna firimu remafuta rakanamirwa, uye kuramba kwecorrosion kuri nani uye kwakagadzikana (passivation treatment ndiyo yakanakisa sarudzo yekutsiva yechinyakare anti-corrosion kurapwa kuti inyove anti-ngura mafuta). Iko hakuna kudikanwa kwemidziyo yakakosha uye yakasimba yekugadzirisa mamiriro, mashoma epurasitiki midziyo kana simbi isina tsvina matangi anodiwa, uye mutengo wakaderera (2/3 pasi peiyo yekubuda kunze); Iko kushanda kuri nyore, kunosangana zvakanyanya nezvinodiwa zvemabhizinesi, uye kunovimbisa kuti munhu wese anogona kuzviita, munhu wese anogona kuzviita, uye anogona kuzviita chero nguva. Ingonyudza masiruu muSenyuan brand Stainless simbi passivation solution kwemaminetsi makumi matatu pane tembiricha.
Passivation:
Mushure mekunge sikuruwa yapfuudzwa, firimu rakanyanya dense passivation rine kuvharika kwakanaka richaumbwa pamusoro pesiruu, iyo inogona kuita kuti sikururu isaore nekuora, inosvika maawa anopfuura 500 emunyu wekupfapfaidza bvunzo.
Screw passivation process:
Chekutanga degrease screws-sukurudza nemvura inoyerera-activate them-sukurudza ivo nemvura inoyerera-passivate them (kweanopfuura maminetsi makumi matatu) -sukurudza nemvura inoyerera-sukurudza nemvura yeultrapure-iomesa uye uiise.
Nguva yekutumira: Nov-29-2022