Ukuguqulwa Kokunamathela Kwensimbi Enguthayela

Ama-iron phosphates noma imikhiqizo ye-cleaer-coater ikhiqiza ama-conversion coating amancane noma angatholakali ezindaweni ezingaphezulu ze-zinc. Imigqa eminingi yokuqedela ye-multimetal isebenzisa ama-phosphates ensimbi aguquliwe ahlinzeka ngokuhlanza, futhi ashiye i-micro-chemical etch kuma-zinc substrates ukuze anikeze izakhiwo zokunamathela.

Omasipala abaningi kanye nezifunda manje zinemikhawulo kuma-PPM e-zinc, okuphoqa abaqedi bensimbi ukuthi banikeze ukwelashwa kwanoma yiziphi izixazululo lapho kucutshungulwa khona ama-zinc substrates.

I-zinc phosphate conversion coating, mhlawumbe, i-coating yekhwalithi ephezulu kakhulu engakhiqizwa endaweni enothayela. Ukuze kukhiqizwe i-zinc phosphate coating ku-galvanized, ama-agent asheshisayo akhethekile ayadingeka ukuze kusebenze indawo engaphezulu ngokwanele ukuze bathole ukunamathela kwe-zinc phosphate. Lezi ezinengilazi zidalwe isenzo samakhemikhali okugeza ezintweni ezingaphezulu. I-crystalline zinc phosphate empeleni "ikhule" endaweni ehlanzekile ye-substrate. Esigabeni esiyisikhombisa se-zinc phosphating unit, izigaba ezahlukahlukene ziyi:

1. Isicoci se-alkaline.
2. Isicoci se-alkaline.
3. Hlanza ngamanzi ashisayo.
4. Isixazululo se-Zinc phosphate processing.
5. Hlanza ngamanzi abandayo.
6. Thumela ukwelashwa (kungaba i-chromium noma uhlobo lwe-nonchromium).
7. Hlanza ngamanzi ahlanzekile.

Iyunithi enezigaba eziyisithupha izoqeda isigaba 1, kanti iyunithi yezigaba ezinhlanu izosusa izigaba 1 no-7. Endleleni yokufaka isifutho samandla, izingxenye ezizogqunywa zilengiswe emhubheni kuyilapho isixazululo simpontshwa ethangini lokubamba. futhi ufafaze ngaphansi kwengcindezi ezingxenyeni. Isixazululo sokumboza siphinde sijikelezwe ngokuqhubekayo.Endleleni yokucwiliswa kwesicelo, izingxenye ezizogcotshwa ngemva kokuhlanzwa zivele zicwiliswe esixazululweni sesisombululo se-phosphating esiqukethwe ethangini lensimbi engagqwali.Indlela yokusebenzisa yokwesula ngesandla inomkhawulo wokusetshenziswa ubuchwepheshe bokuguqula ukuguqulwa.Izingubo ze-Phosphate zivame ukusetshenziswa ngokusebenzisa izigaba ezinhlanu, eziyisithupha, noma eziyisikhombisa. I-phosphatesolution ibanjwe phakathi kwezinga lokushisa eliphakathi kuka-100 kuya ku-160°F (38 kuya ku-71°C) ukuze lifuthwe; 120 kuya ku-200°F (49 kuya ku-93°C) ukuze ucwiliswe; noma izinga lokushisa legumbi lokusula ngesandla. Isisindo se-zinc phosphate coating esetshenziswayo kufanele sibe ngu-150 kuya ku-300 mg./sq. I-ft.Isikhathi sokucubungula imizuzwana engama-30 kuya kwengama-60 ngokufuthwa kanye nemizuzu engu-1 kuya kwemi-5 ngokucwiliswa sivamile.Izixazululo ze-Phosphating zine-concentration of 4 kuya ku-6% ngevolumu futhi zisetshenziswa ekucindezeleni okufuthwayo okuqinisekile kwe-5 kuya ku-10 psi.I-zinc phosphate ukugcoba cishe kungenye yezingubo ezingcono kakhulu zesisekelo sikapende kunsimbi yama-galvanized. Isixazululo sokucutshungulwa kwe-chromium phosphate asikhiqizi isisekelo sikapende esifanele esinamekelweni sensimbi.