Galvanized Plating
Zinc yana da ɗan kwanciyar hankali a cikin busasshiyar iska kuma ba shi da sauƙin canza launi.A cikin ruwa da yanayi mai laushi, yana amsawa tare da oxygen ko carbon dioxide don samar da oxide ko alkaline zinc carbonate film, wanda zai iya hana zinc daga ci gaba da zama oxidized kuma yana taka rawar kariya.
Zinc yana da saurin lalacewa a cikin acid, alkalis da sulfides.A galvanized Layer ne gaba ɗaya passivated.Bayan wucewa a cikin maganin chromic acid ko chromate, fim ɗin wucewar da aka kafa ba shi da sauƙi don hulɗa tare da iska mai laushi, kuma ana haɓaka ikon anti-lalata sosai.Don sassan bazara, sassa masu bakin ciki (kaurin bango <0.5m) da sassan ƙarfe waɗanda ke buƙatar ƙarfin injina, dole ne a aiwatar da cirewar hydrogen, kuma ba za a iya cire sassan jan ƙarfe da jan ƙarfe ba.
Matsakaicin yuwuwar tutiya yana da in mun gwada da kyau, don haka rufin zinc shine rufin anodic don ƙarfe da yawa.
Aikace-aikace: Yana sanya galvanizing da aka saba amfani dashi a yanayin yanayi da sauran wurare masu kyau.Amma ba don sassa na gogayya ba.
Cadmium plating
Sassan da ke hulɗa da yanayin ruwa ko ruwan teku kuma a cikin ruwan zafi sama da 70 ℃, rufin cadmium yana da kwanciyar hankali, yana da juriya mai ƙarfi, mai kyau mai kyau, yana narkar da sannu a hankali a cikin acid hydrochloric, amma yana da sauƙin narkewa a cikin nitric acid., wanda ba ya narkewa a cikin alkali, kuma oxides ba ya narkewa a cikin ruwa.
Rufin cadmium yana da laushi fiye da murfin zinc, haɓakar hydrogen na rufin yana da ƙananan, kuma mannewa yana da ƙarfi, kuma a ƙarƙashin wasu yanayi na electrolytic, murfin cadmium da aka samu ya fi kyau fiye da murfin zinc.Amma iskar da ake samu lokacin da cadmium ya narke mai guba ne, kuma gishirin cadmium mai narkewa shima guba ne.A karkashin yanayi na al'ada, cadmium shine suturar cathodic akan karfe da murfin anodic a cikin ruwa da yanayin zafi mai zafi.
Aikace-aikace: Ana amfani da shi musamman don kare sassa daga gurɓataccen yanayi na ruwan teku ko makamancin maganin gishiri da cikakken tururin ruwan teku.Yawancin sassan jirgin sama, na ruwa da na lantarki, maɓuɓɓugan ruwa, da sassa masu zare ana lulluɓe da cadmium.Ana iya gogewa, a sanya fosfat sannan a yi amfani da shi azaman madaidaicin fenti, amma ba za a iya amfani da shi azaman kayan tebur ba.
Chrome Plating
Chromium yana da ƙarfi sosai a cikin yanayi mai ɗanɗano, alkali, nitric acid, sulfide, carbonate mafita da Organic acid, kuma yana da sauƙi mai narkewa a cikin hydrochloric acid da sulfuric acid mai zafi.
A ƙarƙashin aikin kai tsaye, idan an yi amfani da Layer na chromium azaman anode, yana da sauƙin narkewa a cikin bayani na soda caustic.
Layer na chromium yana da ƙarfi mai ƙarfi, babban taurin, 800 ~ 1000V, juriya mai kyau, ƙarfin haske mai ƙarfi, da juriya mai zafi.Ya ragu sosai.Rashin lahani na chromium shine cewa yana da wuya, gaggautsa da sauƙin faɗuwa, wanda ya fi fitowa fili lokacin da aka yi masa wasu nau'ikan girgiza.
A lokaci guda, chrome yana porous.Karfe chromium yana da sauƙin wucewa a cikin iska don samar da fim ɗin wucewa, don haka canza yuwuwar chromium.Chromium akan ƙarfe don haka ya zama suturar cathodic.
Aikace-aikace: Ba shi da kyau a kai tsaye farantin chrome a saman sassan karfe a matsayin Layer anti-lalata.Gabaɗaya, Multi-Layer electroplating (watau jan karfe plating → nickel → chromium) na iya cimma manufar rigakafin tsatsa da ado.A halin yanzu, ana amfani da shi sosai don inganta juriya na lalacewa na sassa, gyaran gyare-gyare, hasken haske da fitilu na ado.
Sanya nickel
Nickel yana da kyakkyawan kwanciyar hankali na sinadarai a cikin yanayi da lebe, ba shi da sauƙi don canza launi, kuma yana da oxidized ne kawai lokacin da zafin jiki ya wuce 600 ° C.Yana narkewa a hankali a cikin sulfuric acid da hydrochloric acid, amma yana da sauƙin narkewa a cikin nitric acid.Yana da sauƙin wucewa a cikin nitric acid mai daɗaɗɗa don haka yana da kyakkyawan juriya na lalata.
Plating nickel yana da wuya, mai sauƙin gogewa, yana da haske mai haske kuma yana ƙara kyan gani.Rashin amfaninsa shine rashin ƙarfi, don shawo kan wannan rashin amfani, ana iya amfani da plating na ƙarfe da yawa, kuma nickel shine matsakaicin matsakaici.Nickel shine rufin cathodic don baƙin ƙarfe da murfin anodic don jan karfe.
Aikace-aikace: Yawancin lokaci ana amfani da su don hana lalata da haɓaka kayan ado, don haka ana amfani dashi gabaɗaya don kare kayan ado na ado.Sanya nickel a kan kayayyakin tagulla yana da kyau don hana lalata, amma saboda nickel ya fi tsada, ana amfani da alluran tagulla-tin da yawa maimakon nickel plating.
Lokacin aikawa: Oktoba-11-2022