Le khasiukuthwala okubuthayoyingxenye ebalulekile yemishini eminingi yemishini. Njengesengezo sensimbi, uma kungasetshenziswa isikhathi eside noma asigciniwe kahle, kulula ukugqwala. Uma okuvuthiweIndandatho yokubulalaakwalashwa ngesikhathi, ukusebenza kwawo kuzothinteka. Namuhla sizokwethula izindlela eziningi zokususa ukugqwala kusuka kuIndandatho yokubulala

Ukuze ugcine indawo evuthayo ejikelezayo ihlanzekile, khetha i-solvent efanelekile yokuhlanza ngokwezindawo ezingaphezulu kwento yokulwa, ukuze igweme ukugqwala okukhulu. Ukuhlanza okungaphezulu kungathatha indlela yokuhlanza yokwelashwa kwamakhemikhali kanye nendlela yokuhlanza imishini. Lapho ingaphezulu lomile, yenza umsebenzi omuhle ngokulawula amazinga okushisa bese ulinda kuze kube yilapho iningi lendawo lisomile ngaphambi kokusula nge-gauze. Lapho usebenzisa uwoyela wokulwa nokugqwala, izindlela ezahlukahlukene kufanele zamukelwe ukusebenzisa izindlela ezahlukahlukene zokuthwala izakhiwo ezingaphezulu. Izibopho ezincane zingacwiliswa ngqo kumafutha okulwa nokugqwala. Uma uhlangabezana nesimo esikhethekile, ungakhetha indlela yokupenda, ukuze kube lula ukukhiqiza ukunqwabelana kwamafutha. Kunezici eziningi ezibangela ukugqwala kwensimbi. Ukwakheka kwamakhemikhali kwensimbi uqobo kungadala ukugqwala noma izinga lokushisa kanye nomswakama wemvelo lapho into ekhona nayo ingadala ukugqwala.

Enyeindlelaukucwilisa iukuthwala okubuthayophakathi kwa-toIthangi lokulwa nokugqwala: icwilisa Theukuthwala okubuthayoEsixazululweni samanzi samanzi ama-5% sodium nitrite kanye ne-0.6% sodium carbonate. Ngale ndlela, umphumela wokulwa nokugqwala kweukuthwala okubuthayo iyasebenza kakhulu.

Ngaphezu kwalokho, ungacela futhi umenzi ukuthi enze ukwelashwa kwe-galvaning noma kwe-phosphating lapho u-odaIndandatho yokubulala, okungavimbela ukugcwala.