Me ya sa 7 jerin aluminum gami da wuya oxidize?

7075 aluminum gami, a matsayin 7 jerin aluminum gami da babban zinc abun ciki, ana amfani da ko'ina a cikin sararin sama, soja da kuma high-karshen masana'antu masana'antu saboda da m inji Properties da haske halaye. Duk da haka, akwai wasu ƙalubale lokacin yin jiyya na sama, musamman lokacin yin anodizing don haɓaka juriya na lalata da taurin saman.

Anodizing wani tsari ne na electrochemical ta hanyar da za a iya samar da fim din aluminum oxide a kan saman karfe don inganta juriya na lalacewa, juriya da lalata. Duk da haka, saboda babban abun ciki na zinc a cikin 7075 aluminum gami da halayen abun ciki na Al-Zn-Mg alloy, wasu matsalolin suna iya faruwa a lokacin anodizing:

1. Launi mara daidaituwa:The zinc kashi yana da mafi girma tasiri a kan hadawan abu da iskar shaka sakamako, wanda zai iya sauƙi kai ga fari gefuna, black spots, da m launuka a kan workpiece bayan hadawan abu da iskar shaka. Waɗannan matsalolin suna bayyana musamman lokacin ƙoƙarin oxidize shi zuwa launuka masu haske (kamar ja, lemu, da sauransu) saboda kwanciyar hankalin waɗannan launuka ba su da kyau.

2. Rashin isasshen mannewa na fim din oxide:Lokacin da aka yi amfani da tsarin gargajiya na sulfuric acid anodizing don bi da 7 jerin aluminum gami, saboda rashin daidaituwa da rarraba abubuwan haɗin gwiwar aluminum, girman micropores a saman fim ɗin oxide zai bambanta sosai bayan anodizing. Wannan yana haifar da bambance-bambance a cikin inganci da mannewa na fim din oxide a wurare daban-daban, kuma fim din oxide a wasu wurare yana da raunin mannewa kuma yana iya faduwa.

Don magance waɗannan matsalolin, dole ne a ɗauki wani tsari na anodizing na musamman ko inganta tsarin da ake ciki, kamar daidaita abubuwan da ke ciki, zafin jiki da yawa na electrolyte, wanda zai shafi inganci da aikin fim ɗin oxide. Alal misali, pH na electrolyte zai shafi girman girma da tsarin pore na fim din oxide; Yawan halin yanzu yana da alaƙa kai tsaye da kauri da taurin fim ɗin oxide. Ta hanyar sarrafa waɗannan sigogi daidai, ana iya daidaita fim ɗin aluminum na anodized wanda ya dace da takamaiman buƙatu.

Gwaje-gwaje sun nuna cewa bayan anodizing da 7 jerin aluminum gami, za a iya samun wani oxide fim da kauri na 30um-50um. Wannan fim din oxide ba zai iya kawai kare kariya na aluminum gami da tsawaita rayuwar sabis ba, amma kuma ya dace da ƙayyadaddun buƙatun aiki ta hanyar daidaita sigogin tsari. Hakanan za'a iya rina saman alloy ɗin aluminium bayan anodizing don shayar da kwayoyin halitta ko inorganic pigments don ba da launuka masu wadatar aluminium don saduwa da buƙatun ado daban-daban.

A takaice, anodizing ne mai tasiri wajen inganta aikin 7 jerin aluminum gami. Ta hanyar daidaita sigogin tsari, za a iya shirya fim mai kariya wanda ya dace da ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun buƙatun, wanda ya fadada filin aikace-aikacen na aluminum gami.