Pali makina, mankhwala, ndi electrochemical njira kuchotsa oxide sikelo ya ukhondo zosapanga dzimbiri mapaipi.

Chifukwa cha zovuta za oxide sikelo yopangidwa ndi mipope yachitsulo chosapanga dzimbiri, sikophweka kuchotsa sikelo ya oxide pamtunda, komanso kupanga pamwamba mpaka paukhondo komanso kusalala.Kuchotsa sikelo ya oxide pa mapaipi achitsulo chosapanga dzimbiri nthawi zambiri kumatenga masitepe awiri, imodzi ndi pretreatment, ndipo gawo lachiwiri ndikuchotsa phulusa ndi slag.

The oxide sikelo pretreatment wa ukhondo zosapanga dzimbiri chitoliro kumapangitsa oxide sikelo kutaya, ndiyeno n'zosavuta kuchotsa ndi pickling.Pretreatment akhoza kugawidwa m'njira zotsatirazi: alkaline nitrate kusungunuka mankhwala njira.Kusungunuka kwa alkaline kumakhala ndi 87% hydroxide ndi 13% nitrate.Chiŵerengero cha awiriwo mumchere wosungunuka chiyenera kuyang'aniridwa mosamala kuti mchere wosungunula ukhale ndi mphamvu yamphamvu kwambiri ya okosijeni, malo osungunuka, ndi kukhuthala kochepa.Popanga, sodium nitrate yokhayo imakhala yosachepera 8% (wt).Mankhwalawa amachitidwa mu ng'anjo yosamba mchere, kutentha ndi 450 ~ 470℃, ndipo nthawi ndi mphindi 5 za ferritic zitsulo zosapanga dzimbiri ndi mphindi 30 zachitsulo chosapanga dzimbiri cha austenitic.Mofananamo, chitsulo oxides ndi spinels angathenso okosijeni ndi nitrates ndi kutaya trivalent chitsulo okusayidi, amene mosavuta kuchotsedwa ndi pickling.Chifukwa cha kutentha kwambiri, ma oxides omwe amawonekera amachotsedwa pang'onopang'ono ndikumira mumadzi osambira ngati matope.Pansi pa ng'anjo.

Alkaline nitrate kusungunula njira pretreatment: nthunzi degreasing→Kutentha kwapakati (150-250).℃nthawi 20 ~ 30min)→wosungunuka mchere mankhwala→kuthira madzi→kutsuka madzi otentha.Chithandizo chamchere chosungunuka si choyenera pamisonkhano yokhala ndi mipata ya weld kapena crimping.Ziwalozo zikachotsedwa mung'anjo ya mchere wosungunuka ndikuzimitsidwa, fungo lopweteka la alkali ndi mchere limaphwanyidwa, kotero mtundu wa dontho wakuya uyenera kutengedwa kuti uzimitse madzi.Tanki yozimitsira madzi osalowa madzi.Pamene madzi azimitsidwa, choyamba nyamulani dengulo mu thanki, imani pamwamba pa nthaka yopingasa, kutseka chivundikiro cha thanki, ndiyeno tsitsani mbali zonse za dengulo m'madzi mpaka litamira.

Alkaline potaziyamu permanganate pretreatment: njira yothetsera ili ndi sodium hydroxide 100→125g/L, sodium carbonate 100→125g/L, potaziyamu permanganate 50g/L, yankho kutentha 95 ~ 105℃, mankhwala nthawi 2 ~ 4 ora.Ngakhale mankhwala amchere a potaziyamu permanganate sali abwino ngati amchere osungunula, ubwino wake ndiwakuti ndi woyenera pamisonkhano yokhala ndi seams welded kapena crimping.

Pofuna kumasula sikelo ya oxide, asidi amphamvu otsatirawa amatengedwa mwachindunji kuti ayambe kuchiritsidwa ndi njira yoviika.

Kuti asidi asasungunuke chitsulo choyambira, nthawi yomiza ndi kutentha kwa asidi ziyenera kuyang'aniridwa mosamala.