Txij li thaum lub thicker qhov chaw tsim nyob rau saum npoo, ntom thiab complex Cheebtsam ntawm lub teev, xws li cov khoom pickling descaling kuj nyuaj.Xws li kev tshem tawm ntawm xoob oxide nplai raws li cov kauj ruam ntawm kev tshem cov tshauv dai ua.

1, Loose scale:
2, Pickling kev ua haujlwm: tom qab xoob nplai, feem ntau txuas rau qhov chaw ntawm txheej txheej grey dai, dai tshauv tom qab tshem tawm oxide passivation.
3, Tshem tawm cov hmoov tshauv dai cov kauj ruam: Cov khoom tom qab pickling passivation txheej txheem tsis zoo corrosion nyob rau hauv cov huab cua, xws li raug rau huab cua, qhov chaw ntawm lub nto xeb.Txhawm rau txhim kho cov corrosion tsis kam ntawm qhov chaw, qhov chaw yuav tsum tsim cov npoo av, zoo corrosion ua yeeb yam ntawm passive zaj duab xis, txhawm rau ua tiav lub hom phiaj ntawm corrosion tsis kam.Passivation zaj duab xis yog qhov zoo lossis qhov phem yuav cuam tshuam ncaj qha rau qhov zoo ntawm lub neej thiab qhov tsos, yam uas cuam tshuam rau qhov zoo ntawm passivation zaj duab xis muaj pes tsawg leeg thiab qhov zoo ntawm cov khoom tseem ceeb ntawm cov tshuaj passivation.