Ngokuyinhloko ihloselwe amapayipi ensimbi, ajwayele ukusabela kokugqwala, futhi kunengozi ethile efihliwe yokulimala kwemishini ngemva kokugqwala.Ngemva kokukhipha zonke izinhlobo zamafutha, ukugqwala, isikali, izindawo zokushisela nokunye ukungcola, kungathuthukisa kakhulu ukumelana nokugqwala kwensimbi.

Uma kukhona ukungcola ebusweni be-ipayipi lensimbi engagqwali, kufanele ihlanzwe ngomshini bese ikhishwa amafutha.Ukuba khona kwamafutha ebusweni kuzothinta ikhwalithi ye-pickling ne-passivation.Ngenxa yalesi sizathu, ukwehlisa amafutha akukwazi ukushiywa.Ungasebenzisa i-lye, ama-emulsifiers, izinyibilikisi eziphilayo kanye nesitimu.

I-passivation yisinyathelo sokugcina senqubo yokuhlanza amakhemikhali futhi iyisinyathelo esibalulekile.Inhloso yawo ukuvimbela ukugqwala kwezinto.Isibonelo, ngemva kokuba i-boiler ifakwe emanzini anosawoti, igezwe ngamanzi, futhi ihlanjululwe, indawo yensimbi ihlanzekile kakhulu, isebenze kakhulu, futhi ingaphansi kokugqwala kalula, ngakho-ke kufanele idluliswe ngokushesha ukuze yakhe ifilimu yokuzivikela endaweni yensimbi ehlanziwe ukuze kuncishiswe. ukugqwala.