Galvanizing yana nufin fasahar jiyya ta fuskar bangon waya na sanya Layer na zinc a saman ƙarfe, gami ko wasu kayan don manufar kyakkyawa da rigakafin tsatsa. Babban hanyar ita ce galvanizing mai zafi mai zafi.
Zinc ne mai narkewa a cikin acid da alkali, don haka ake kira amphoteric metal.Zinc canje-canje kadan a bushe iska.A cikin m iska, da zinc surface zai samar da wani m asali zinc carbonate film.Containing sulfur dioxide, hydrogen sulfide da Marine yanayi, tutiya lalata juriya ne matalauta, musamman a high zafin jiki da kuma high zafi dauke da Organic acid yanayi, zinc shafi ne mai sauki ya zama misali corro.7. Domin karfe matrix, tutiya shafi nasa ne na anodic shafi, wanda aka yafi amfani da su hana lalata da karfe. Ayyukansa na karewa yana da dangantaka mai kyau tare da kauri na sutura.Kayan kariya da kayan ado na suturar zinc za a iya inganta su sosai ta hanyar wucewa, tabo ko sutura tare da wakili mai kariya.
Ka'idar ita ce ta hanzarta oxidize saman ƙarfe da samfuran ƙarfe don ƙirƙirar fim mai kariya mai ƙarfi oxide. Akwai hanyoyin da aka saba amfani da su na baƙar fata: al'ada alkaline dumama blackening da marigayi blackening a dakin da zafin jiki.Amma sakamakon dakin zafin jiki blackening tsari a kan low carbon karfe ne ba good.It ne mafi alhẽri to blacken A3 karfe da alkali.Alkalescent blackening ne subdivided da kuma biyu blackening na baƙin ƙarfe aka gyara, sun sake sake baƙar fata na baƙin ƙarfe. hydroxide da sodium nitrite.The zafin jiki da ake bukata domin blackening ne m, jere daga game da 135 digiri Celsius zuwa 155 digiri Celsius, kuma za ka samu mai kyau surface, amma yana daukan wani lokaci.A m aiki, da hankali ya kamata a biya ga ingancin tsatsa da man cire kafin blackening na workpiece, da passivation man nutsewa bayan blackening.The ingancin blackening daukan alkaline sau da yawa tare da wadannan ruwa oxidation matakai. Acid oxidation.Hanyar samar da fim din oxide akan saman karfe don hana lalata ana kiransa "bluing".Fim din oxide da aka kafa akan saman karfen baki bayan maganin "bluing", Layer na waje shine yafi ferric oxide kuma Layer na ciki shine ferrous oxide.
Ana amfani da ƙwanƙwasa mai ƙarfi a cikin mahimmancin haɗin gwiwa, batun mafi girman tashin hankali da shear.Mataki na ƙarshe a cikin aikin gyaran fuska shine magani mai zafi, wanda aka fi sani da quenching, don ƙara ƙarfin ƙugiya.Duk da haka, haɓakar hydrogen yana faruwa a sauƙaƙe a cikin tsarin galvanizing bolts.Hydrogen embrittlement yawanci halin da jinkirin karaya.Wannan yana rage ƙarfin ƙarfin ƙarfin ƙarfin ƙarfi. reheat magani na high-ƙarfi bolts ne in mun gwada da barga hadawan abu da iskar shaka film.It ba zai yi tsatsa a lokacin da shi ba a cikin lamba tare da m abubuwa.
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Lokacin aikawa: Satumba-09-2019