Pogwiritsa ntchito, mbali zachitsulo zimakhala ndi corrosion electrochemical and chemical corrosion chifukwa cha mphamvu ya malo ogwira ntchito. Ndizofala m'mafakitale kuti apititse patsogolo mawonekedwe azinthu zogwirira ntchito kudzera muukadaulo wamankhwala apamwamba komanso kupititsa patsogolo zotsutsana ndi dzimbiri za zida zogwirira ntchito. Nkhaniyi imabweretsa matekinoloje awiri apamtunda okhala ndi anti-corrosion properties: ukadaulo wa Dacromet surface treatment.

Ukadaulo waukadaulo wa Dacromet pamwamba ndiukadaulo wothira dzimbiri, womwe umagwiritsidwa ntchito kwambiri poteteza zinthu zachitsulo. Imagwiritsa ntchito njira yopangira ma electroless plating kuti iphimbe zitsulo pamwamba pake ndi wosanjikiza wa zokutira za inorganic ndi anti-corrosion properties. Nthawi zambiri kutentha kwa processing kumakhala pafupifupi 300 ° C. Kupaka uku kumapangidwa makamaka ndi ultrafine flaky zinc, aluminiyamu ndi chromium, zomwe zimatha kusintha kukana kwa dzimbiri kwazitsulo ndikutalikitsa moyo wawo wautumiki. Dongosolo la Dacromet limatha kupanga filimu wandiweyani wa 4 ~ 8 μm pamwamba pa chogwirira ntchito. Chifukwa cha kuchulukana kwa flake zinc ndi aluminiyamu, imalepheretsa zinthu zowononga monga madzi ndi okosijeni kuti zigwirizane ndi zitsulo. Panthawi imodzimodziyo, pa Dacromet processing , chromic acid imakhudzidwa ndi nthaka, ufa wa aluminiyamu ndi zitsulo zoyambira kuti apange filimu yochepetsetsa, yomwe imakhala ndi kukana kwa dzimbiri.

Nthawi zambiri, ukadaulo wa Dacromet pamwamba ndi njira wamba yochizira zitsulo. Ukadaulo wa Dacromet umagwiritsidwa ntchito makamaka poteteza anti-corrosion, makamaka zomangira ndi zomangira. Amagwiritsidwa ntchito kwambiri kukonza kuuma ndi kulimba kwa zinthu zachitsulo. Abrasiveness ndi kukana dzimbiri. Kwa zida zogwirira ntchito zolimba komanso zotsutsana ndi dzimbiri, ukadaulo wa Crow umagwira ntchito kwambiri. Posankha njira yoyenera yogwiritsira ntchito mankhwala apamwamba, iyenera kusankhidwa malinga ndi zofunikira zomwe zimagwiritsidwa ntchito.

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