Yayin da rigar ajiya tabo ko 'fararen tsatsa' ba safai ke lalata ikon kariya na rufin galvanized ba, cutar kyan gani ce wacce ke da sauƙin gujewa.

Tabon ajiyar rigar yana faruwa ne lokacin da sabbin kayan galvanized suka fallasa ga danshi kamar ruwan sama, raɓa ko raɗaɗi (ƙananan zafi), kuma su kasance a wurin da ke da iyakacin iska a saman saman.Waɗannan sharuɗɗan na iya yin tasiri yadda aka samar da patina mai kariya.

Yawancin lokaci, zinc yana fara amsawa tare da oxygen don samar da zinc oxide, sannan tare da danshi don samar da zinc hydroxide.Tare da kwararar iska mai kyau, zinc hydroxide sannan ya canza zuwa zinc carbonate don samar da kariya ga zinc, don haka yana rage yawan lalata.Duk da haka, idan zinc ba shi da damar samun iska mai gudana kyauta kuma ya kasance yana nunawa ga danshi, zinc hydroxide ya ci gaba da bunkasa a maimakon haka kuma ya haifar da tabon ajiya.

Farin tsatsa na iya tasowa cikin makonni ko ma na dare idan yanayin ya yi daidai.A cikin matsanancin yanayi na bakin teku, tabon ajiya kuma na iya faruwa daga ginanniyar gishirin da aka gina ta iska wanda ke sha damshi cikin dare.

Wasu karfen galvanized na iya haɓaka wani nau'in tabon ajiyar jika da aka sani da 'black spotting', wanda ke bayyana a matsayin duhu mai duhu tare da ko ba tare da farin tsatsa a kusa da shi ba.Irin wannan tabon ma'ajiyar rigar ya fi zama ruwan dare akan karfen ma'aunin haske kamar zanen gado, guraben ruwa da sassa na bakin ciki mai bango.Yana da wahalar tsaftacewa fiye da nau'ikan farin tsatsa na yau da kullun, kuma wani lokacin ana iya ganin tabo bayan tsaftacewa.