Ukwelashwa kwangaphambili kokumboza kuhlanganisa ukwehlisa (ukwehlisa), ukususwa kokugqwala, ukwenza izingxenye ezintathu ze-phosphating.I-Phosphating iyisixhumanisi esiyinhloko, ukukhishwa kwe-degreasing kanye nokugqwala kuyinqubo yokulungiselela ngaphambi kwe-phosphating, ngakho-ke ekusebenzeni kokukhiqiza, akufanele nje sithathe umsebenzi we-phosphating njengokugxila, kodwa futhi siqale kusukela kuzidingo zekhwalithi ye-phosphating, senze umsebenzi omuhle ngaphezu kwalokho. uwoyela nokugqwala ukususwa, ikakhulukazi naka ithonya mutual phakathi kwabo.