Umphezulu wentsimbi oye wadutyulwa ngokuqhushumba kunye nokususwa komhlwa awunawo amabala e-oyile abonakalayo, kwaye akukho kukhululeka.
iziqhotyoshelwano ezifana nesikhumba se-oxide, umhlwa, iingubo zepeyinti, njl.
Emva kokudubula ukudubula kunye nokususwa kwe-rust, umphezulu wentsimbi kufuneka ungabikho kwi-oyile ebonakalayo, isikali, i-rust, i-rust coating, kunye nokungcola, kwaye intsalela kufuneka ifakwe ngokuqinileyo.
Umphezulu wentsimbi oye wadubula kunye nokususwa komhlwa kufuneka ungabinazincamatheli ezibonakalayo ezifana namabala e-oyile, isikali, umhlwa, kunye neepeyinti zokugquma, kwaye nayiphi na imikhondo eseleyo kufuneka ibe ngamabala amancinci kuphela ngendlela yamachaphaza okanye imigca.
Umphezulu wentsimbi emva kokudutyulwa kokudubula kunye nokususwa komhlwa akunazincamathelisi ezibonakalayo ezifana ne-oyile, izikali ze-oxide, i-rust, kunye neepeyinti zepeyinti, kwaye umphezulu ubonisa i-uniform kunye ne-metallic luster engaguqukiyo.
