Mayelana nokuthi ipayipi lensimbi elicwiliswe kanjani, inqubo yokufaka uthayela wediphu eshisayo iphumela kusibopho se-metallurgical phakathi kwe-zinc nensimbi enochungechunge lwamaalloyi e-iron-zinc ahlukile. Ulayini we-hot-dip galvanizing ojwayelekile usebenza kanje:
1. Insimbi ihlanzwa kusetshenziswa isisombululo se-caustic. Lokhu kususa amafutha/amafutha, ukungcola, nopende.
2. Isixazululo sokuhlanza i-caustic siyahlanzwa.
3. Insimbi ifakwe emanzini ane-asidi ukuze isuse isikali sokugaya.
4. Ikhambi le-pickle liyahlanzwa.
5. I-flux, ngokuvamile i-zinc ammonium chloride isetshenziswa ensimbi ukuze kuvinjelwe i-oxidation yendawo ehlanziwe lapho ichayeka emoyeni. I-flux ivunyelwe ukuba yome phezu kwensimbi kanye nezinsiza ohlelweni lokumanzisa kwe-zinc nokunamathela ensimbi.
6. Insimbi icwiliswa kubhavu we-zinc oncibilikisiwe futhi igcinwe lapho kuze kube yilapho izinga lokushisa lensimbi lilingana nelokugeza.
7. Insimbi ipholiswa ethangini lokucisha ukuze kuncishiswe izinga lokushisa layo futhi ivimbele ukusabela okungafuneki kwento esanda kwakhiwa nomkhathi.
Ngobuchwepheshe, uthayela kuyinqubo yokumboza insimbi nensimbi ngongqimba lwezinc ngokucwilisa insimbi kubhavu we-zinc encibilikisiwe ezingeni lokushisa elicishe libe ngu-840 °F (449 °C). Lapho itholakala emkhathini, i-zinc ehlanzekile (Zn) ihlangana ne-oxygen (O2) ukuze yakhe i-zinc oxide (ZnO), ephinde ihlangane ne-carbon dioxide (CO2) yakhe i-zinc carbonate (ZnCO3), ngokuvamile okumpunga okufiphele, okuqinile. impahla evikela insimbi ngaphansi ekugqwaleni okwengeziwe ezimweni eziningi. Ngokuvamile, ipayipi elifakwe uthayela elishisayo linenani eliphakeme lentengo yamapayipi ensimbi kunezinye izinhlobo ezijwayelekile zamapayipi asetshenziswayo ngenxa yezindleko zawo eziphezulu zokukhiqiza emakethe.
Ezisetshenziswa ezingokoqobo, njengezinye izinhlelo zokuvikela ukugqwala, ukwenza uthayela kuvikela ikakhulukazi imikhiqizo yensimbi ngokusebenza njengesithiyo phakathi kwepayipi lensimbi nomkhathi. Kodwa-ke, i-zinc iyinsimbi enamandla kakhulu e-electronegative uma iqhathaniswa nensimbi. Lesi yisici esiyingqayizivele sokwenza ama-galvanizing. Ikakhulukazi, lapho uthayela lonakalisiwe futhi umkhiqizo wensimbi uvezwe emkhathini, i-zinc ingaqhubeka nokuvikela insimbi ngokugqwala kwe-galvanic. Ngaphezu kwalokho, uma lokhu kunamathela kwenzeka kuklwejwa noma kugoqwe, ukuzivikela kwesibili kwe-zinc kuyadingeka ukuze kuvikelwe insimbi ngesenzo se-galvanic. Emshinini wokugaya, ubukhulu be-zinc kulawulwa inani lesikhathi ingxenye ngayinye ecwiliswa ngayo kubhavu we-zinc oncibilikisiwe kanye nesivinini ekhishwa ngaso. Igama elithi “ukucwilisa kabili” libhekisela ezingxenyeni ezinkulu kakhulu ukuba zingangena eketelani elifaka uthayela futhi kufanele zicwiliswe umkhawulo owodwa ngesikhathi. Ayibhekiseli ekugqineni koqweqwe olwengeziwe. Njengomkhiqizi ochwepheshe wepayipi lensimbi e-China, sizibophezele ekukhiqizeni izinhlobo ezahlukene zamapayipi ensimbi kumaphrojekthi akho. Ukuze uthole ulwazi olwengeziwe, ungasithinta noma nini.
Thumela umlayezo wakho kithi:
Isikhathi sokuthumela: Jul-30-2018
