Galvanized karfe bututu, yana da dual abũbuwan amfãni daga lalata juriya da kuma dogon sabis rayuwa, da kuma farashin ne in mun gwada da low, don haka yanzu da amfani kudi ne samun mafi girma da kuma mafi girma, amma wasu masu amfani ba su kula a lokacin da waldi galvanized bututu, shi ya sa. wasu matsalolin da ba dole ba, don haka menene matsalolin ya kamata a kula da su lokacin walda bututun galvanized?
01 Jigon shine don gogewa
Dole ne a goge Layer na galvanized a walda, in ba haka ba kumfa, trachoma, walda na karya, da sauransu. Har ila yau, zai sa waldawar ta lalace kuma ta rage tsauri.
02 Welding halaye na galvanized karfe
Galvanized karfe ne gaba ɗaya mai rufi da Layer na Zinc a waje da low carbon karfe, da galvanized Layer ne kullum 20um kauri. Zinc yana da wurin narkewar 419°C da wurin tafasar kusan 908°C. A lokacin walda, zinc yana narkewa ya zama wani ruwa da ke yawo a saman narkakkar tafkin ko kuma a tushen walda. Zinc yana da babban ƙarfi mai ƙarfi a cikin baƙin ƙarfe, kuma ruwan zinc zai lalata ƙarfen walda da zurfi tare da iyakar hatsi, kuma zinc tare da ƙarancin narkewa zai samar da “karfe mai ruwa”. A lokaci guda kuma, zinc da baƙin ƙarfe na iya samar da mahadi na tsaka-tsakin tsaka-tsakin tsaka-tsaki, kuma waɗannan matakan ɓarna suna rage filastik na ƙarfe na walda kuma suna haifar da tsagewa a ƙarƙashin aikin damuwa. Idan welded ɗin fillet ɗin suna walda, musamman maɗaɗɗen fillet na haɗin gwiwa na T-haɗin gwiwa, ana iya samun fashewar shiga ciki. A lokacin da galvanized karfe ne welded, da zinc Layer a kan tsagi surface da gefen za a oxidized, narkewa, evaporated da farin hayaki da tururi za a volatilized a karkashin mataki na baka zafi, wanda zai sauƙi sa weld pores. ZnO da aka kafa saboda iskar oxygen yana da babban wurin narkewa, sama da kusan 1800°C. Idan sigogi sun yi ƙanƙanta a lokacin aikin walda, zai haifar da haɗawar ZnO slag, kuma a lokaci guda. Tun da Zn ya zama deoxidizer. Samar da FeO-MnO ko FeO-MnO-SiO2 ƙarancin narkewar oxide slag. Abu na biyu kuma, saboda fitar da sinadarin Zinc, yawan fararen hayaki yana raguwa, wanda ke da ban haushi da illa ga jikin dan Adam. Saboda haka, dole ne a goge Layer na galvanized a wurin waldi kuma a zubar da shi.
03 Kula da tsarin walda
A pre-welding shiri na galvanized karfe ne guda da cewa na talakawa low-carbon karfe. Ya kamata a lura cewa girman tsagi da galvanized Layer na kusa ya kamata a kula da hankali. Domin shigar azzakari cikin farji, da tsagi size ya kamata ya dace, kullum 60 ~ 65 °, tare da wani rata, kullum 1.5 ~ 2.5mm; domin rage shigar da zinc a cikin weld, galvanized tsagi a cikin tsagi na iya zama Solder bayan an cire Layer.
A cikin ainihin aikin, beveling na tsakiya, babu wani tsari mai banƙyama da aka karɓa don sarrafawa mai mahimmanci, kuma tsarin waldawa na Layer biyu yana rage yiwuwar shigar da bai cika ba. Ya kamata a zaɓi sandar walda bisa ga kayan tushe na bututun ƙarfe na galvanized. Don ƙananan ƙananan ƙarfe na carbon, ya fi dacewa don zaɓar J422 saboda la'akari da sauƙi na aiki.
Hanyar walda: A lokacin walda na farko Layer na weld dinkin a Multi-Layer waldi, kokarin narke da zinc Layer da kuma sanya shi vaporize, ƙafe da kuma kubuta daga weld dinka, wanda zai iya ƙwarai rage ruwan tutiya saura a cikin weld kabu. Lokacin walda fillet ɗin walda, kuma a yi ƙoƙarin narkar da Layer na zinc a saman Layer na farko kuma ya sanya shi tururi da ƙafe don tserewa walda. Hanyar ita ce matsar ƙarshen na'urar zuwa gaba game da 5 ~ 7mm, lokacin da zinc Layer Bayan narkewa, komawa zuwa matsayin asali kuma ci gaba da ci gaba. Don walƙiya a kwance da walƙiya a tsaye, idan aka yi amfani da gajerun na'urorin lantarki irin su J427, yanayin ƙaddamarwa zai zama kaɗan; idan aka yi amfani da fasahar sufuri ta gaba da gaba, za a iya samun ingancin walda mara lahani.
Lokacin aikawa: Maris 15-2023
