A cikin aikin injiniya na aiki, akwai manyan hanyoyin kariya guda uku don lalata ƙarfe.
1.Hanyar fim mai kariya
Ana amfani da fim ɗin kariyar don ware ƙarfe daga matsakaicin da ke kewaye, don kaucewa ko rage jinkirin lalacewa ta hanyar lalata na waje akan karfe.Misali, fesa fenti, enamel, robobi da sauransu a saman karfe;ko amfani da murfin ƙarfe azaman fim ɗin kariya, kamar zinc, tin, chromium, da sauransu.
2.Hanyar kariya ta lantarki
Ana iya raba takamaiman dalilin lalata zuwa hanyar kariyar da ba ta yanzu da kuma sha'awar hanyar kariya ta yanzu.
Hanyar kariya ba ta yanzu ana kuma kiranta hanyar hadaya anode.Shi ne ya haɗa karfe wanda ya fi karfe aiki, irin su zinc da magnesium, zuwa tsarin karfe.Domin zinc da magnesium suna da ƙarancin ƙarfi fiye da ƙarfe, zinc, da magnesium sun zama anode na baturin lalata.lalacewa (anode hadaya), yayin da tsarin karfe yana kariya.Ana amfani da wannan hanya sau da yawa don wuraren da ba shi da sauƙi ko wuya a rufe murfin kariya, irin su tukunyar jirgi mai tururi, bututun karkashin kasa na harsashi na jirgi, tsarin injiniya na tashar jiragen ruwa, hanyoyi da gine-ginen gada, da dai sauransu.
Hanyar kariyar da aka yi amfani da ita a halin yanzu ita ce sanya wasu karafa mai jujjuyawa ko wasu karafa masu rarrafe kusa da tsarin karfe, irin su babban siliki da baƙin ƙarfe da gubar-azur, da haɗa madaidaicin sandar wutar lantarki na DC na waje zuwa tsarin ƙarfe mai kariya, da tabbatacce iyakacin duniya an haɗa zuwa refractory karfe tsarin.A kan karfe, bayan electrification, da refractory karfe zama anode kuma ya lalace, da kuma karfe tsarin zama cathode da aka kare.
3.Taijin Chemical
Ana ƙara ƙarfe na carbon da abubuwan da za su iya inganta juriya na lalata, kamar nickel, chromium, titanium, jan karfe, da sauransu, don yin ƙarfe daban-daban.
Ana iya amfani da hanyoyin da ke sama don hana lalata sandunan ƙarfe a cikin simintin da aka ƙarfafa, amma hanya mafi dacewa da tattalin arziƙi kuma mafi inganci ita ce inganta yawa da alkalinity na simintin da tabbatar da cewa sandunan ƙarfe suna da isasshen kauri na kariya.
A cikin samfurin hydration na siminti, saboda sinadarin calcium hydroxide na kusan 1/5, ƙimar pH na matsakaici shine kusan 13, kuma kasancewar calcium hydroxide yana haifar da fim ɗin wucewa akan saman sandar ƙarfe don samar da wani Layer mai kariya.A lokaci guda, calcium hydroxide kuma zai iya aiki tare da agogon yanayi CQ don rage alkalinity na kankare, fim ɗin wucewa zai iya lalata, kuma saman karfe yana cikin yanayin kunnawa.A cikin yanayi mai danshi, lalatawar lantarki na lantarki ya fara faruwa a saman sandar karfe, wanda ke haifar da tsagewar simintin tare da sandar.Saboda haka, ya kamata a inganta juriya na carbonization na kankare ta hanyar inganta ƙaddamar da kankare.
Bugu da ƙari, ions chloride suna da tasirin lalata fim ɗin wucewa.Sabili da haka, lokacin shirya simintin da aka ƙarfafa, ya kamata a iyakance adadin gishiri na chloride.
Lokacin aikawa: Oktoba-10-2022