An buga 2018-12-22Maganin jiyya na Dacromet shine maganin ruwa mai tarwatsewa wanda ya ƙunshi flakes na zinc, flakes na aluminum, chromic acid anhydrous, ethylene glycol, zinc oxide, da sauransu, yana da diamita na micrometers huɗu zuwa biyar da kauri na micrometers huɗu zuwa biyar.Bayan da aka bi da workpiece an nutsar da ko fesa a cikin magani ruwa, saman workpiece ne thinly manne da wani shafi ruwa, sa'an nan mai tsanani zuwa game da 300 ° C a cikin curing tanderun yin hexavalent chromium a cikin shafi Layer The Organic al'amarin. kamar ethylene glycol an rage don samar da ruwa-insoluble, amorphous nCrO3 da mCr2O3.Karkashin aikinsa, takardar zinc da takardar aluminium an haɗa su tare, kuma yawancin yadudduka an tattara su a saman kayan aikin.Rufin, tare da anhydrous chromic acid a cikin rufin Dacromet, oxidizes saman kayan aikin don haɓaka mannewar murfin zuwa saman kayan aikin.
Tsarin rigakafin tsatsa na rufin Dacromet gabaɗaya ana ɗaukar su kamar haka:
1. Sarrafa kariyar sadaukar da kai na zinc foda;
2. A chromic acid samar da wani m oxide fim a kan surface na workpiece wanda ba a sauƙi lalata a lokacin aiki;
3. Rubutun da ke kunshe da dubun yadudduka na zinc da aluminum sheets suna samar da aikin kariya, wanda ya kara yawan isowar mai kutse a saman kayan aikin.
Hanyar da ta wuce.Electro-galvanizing an lullube shi kai tsaye tare da Layer na zinc akan saman karfe.Lalata halin yanzu yana da sauƙin gudana tsakanin yadudduka.Musamman a muhallin fesa gishiri, ana rage yawan abin da ake amfani da shi don samun sauƙin amfani da zinc.Ana samar da tsatsa mai fari a farkon matakin sarrafawa.Ko jajayen tsatsa.Maganin Dacromet ya ƙunshi wani yanki na zinc wanda aka rufe da mahadi na chromic acid, kuma ƙaddamarwa yana da matsakaici, don haka yana da kyakkyawan juriya na lalata.Zane-zanen zinc da aka rufe da yadudduka an sanya su don samar da garkuwa, kuma ana sarrafa yawan hazo na zinc har ma a cikin gwajin feshin gishiri.Haka kuma, tun da sinadarin chromic acid a cikin fim ɗin bushewa na Dacromet ba ya ƙunshi ruwa mai kristal, ƙarfin zafinsa da juriya na lalata bayan dumama yana da kyau.
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Lokacin aikawa: Janairu-13-2022