Thaum siv lub taub hau rauj, lub taub hau rauj ntaus cov khoom kom raug ntaus, thiab qee zaum hnav tshwm sim, yog li kev saib xyuas yuav tsum tau ncua qhov teeb meem hnav ntawm lub taub hau rauj. Thaum siv, yuav tsum muaj kev sib tshuam tapping, thiab tib lub sijhawm, cov khib nyiab yuav tsum tau ua raws li cov khoom lag luam hauv lub sijhawm, thiab tom qab ntawd siv txuas ntxiv. Thaum lub sijhawm ua haujlwm, cov khib nyiab thiab cov oxides ntawm qhov chaw ua haujlwm yuav tsum tau corroded rau ntawm qhov chaw kom tiv thaiv kev cuam tshuam ntawm peb tog.
Tom qab siv lub claw rauj, nws yuav tsum tau muab ntxuav kom huv si raws sijhawm, thiab nws yog nruj me ntsis txwv tsis pub khaws cia ua ke nrog corrosive xov xwm, kom lub neej kev pab cuam ntawm lub rauj yuav ntev dua. Tsuas yog nrog kev saib xyuas kom raug thiab ua raws li qee qhov kev ceev faj tuaj yeem ua lub luag haujlwm zoo.