Kudetsa ndi njira yodziwika bwino yopangira mankhwala pamwamba. Mfundo yake ndi kupanga filimu ya oxide pamwamba pazitsulo kuti isungunuke mpweya ndikukwaniritsa cholinga chopewa dzimbiri.
Pali njira ziwiri zodziwika bwino zakuda, imodzi ndi kutentha kwa alkaline ndipo ina ndikuda kutentha kwa chipinda. Komabe, zotsatira zakuda pa kutentha kwa chipinda pazitsulo zochepa za carbon si zabwino. Kudetsa kwa alkaline kumagawika, ndipo pali kusiyana pakati pakuda kumodzi ndi kuwiri kwakuda.
A wosanjikiza wokongola, wandiweyani ndi dzimbiri umboni wakuda chitsulo okusayidi filimu aumbike pamwamba pakapita nthawi. Amagwiritsidwa ntchito kwambiri pa wotchi, pointer, hairspring, screw, chipolopolo cha zida ndi zida zina zamakina.
Popanga makina, yankho la NaOH nthawi zambiri limagwiritsidwa ntchito kutentha chogwirira ntchito kuti chide. Makulidwe a filimu yakuda ya oxide yomwe imapangidwa ndikuda ndi 0.5-1.5 μ m, ndipo kukana kwake kwa dzimbiri kumakhala kotsika kuposa mafilimu ena amankhwala. Mu nkhungu ya hardware, mankhwala omwe amagwiritsidwa ntchito kwambiri ndi kutentha kwa kutentha.
Ukadaulo wamtunduwu umagwiritsidwa ntchito mu Ruitai Company mtundu watsopano wa ODM 5 zidutswa zitsulo zosapanga dzimbiri zakudakhitchini mpeni seti, kugwiritsa ntchito ndondomeko yakudayi kungapangitse chidacho kuti chisawonongeke komanso chiteteze dzimbiri.

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