Inqubo esetshenziswa ukuqeda isikhumba se-oxide nokugqwala ebusweni bensimbi ebusweni bensimbi nensimbi, kusetshenziswa izixazululo ezine-asidi, ichazwa njengokukhetha.
Ama-iron oxides afana ne-oxide scale kanye nokugqwala (Fe3O4, Fe2O3, FeO, njll.) abhekana nokusabela kwamakhemikhali ngezixazululo ze-asidi, enze usawoti oncibilika kusisombululo se-asidi futhi asuswe.
bhekana nokusabela kwamakhemikhali ngezixazululo ezine-asidi, okuholela ekwakhekeni kukasawoti oncibilikayo akhishwa kamuva.Ama-acids enqubweni yokuqoqa ahlanganisa i-sulfuric acid, i-hydrochloric acid, i-phosphoric acid, i-nitric acid, i-chromic acid, i-hydrofluoric acid, nama-asidi ayinhlanganisela.Ikakhulukazi, i-sulfuric acid ne-hydrochloric acid yizinqumo ezithandwayo.Izindlela zokukhetha ngokuyinhloko zihlanganisa ukucwiliswa kokucwiliswa, ukuvuthwa kwesifutho, nokususwa kokugqwala kwe-asidi.

Ngokuvamile, ukucwiliswa kokucwiliswa kuvame ukusetshenziswa, futhi indlela yokufutha ingasetshenziswa ekukhiqizeni ngobuningi

Izingxenye zensimbi zivame ukucwiliswa ku-10% kuya ku-20% (ngevolumu) isisombululo se-sulfuric acid ekushiseni kokusebenza kuka-40°C.Ukushintshwa kwekhambi lokukha amanzi kuba yimpoqo lapho okunensimbi kudlula u-80g/L futhi i-ferrous sulfate idlula u-215g/L esixazululweni.

Ngezinga lokushisa lekamelo,pickling steelngesisombululo se-hydrochloric acid esingu-20% kuya ku-80% (ivolumu) asijwayele ukugqwala kanye ne-hydrogen embrittlement.
Ngenxa yokubonakala kwe-corrosion proclivity yama-asidi ezinsimbi, kwethulwa ama-corrosion inhibitors.Ngemuva kokuhlanza, ingaphezulu lensimbi libonisa ukubukeka okumhlophe okusiliva, ngesikhathi esifanayo kudlula amandla ukuze kuthuthukiswe izimfanelo zokumelana nokugqwala kwensimbi engagqwali.

Ukwethemba lokhu kuchazwa kufakazela kuzuzisa.Uma kwenzeka kuqhamuka eminye imibuzo, sicela ungangabazi ukuxhumana.