Kuumbwa kweiyo inopisa-dip galvanized layer ndiyo nzira yekugadzira iron-zinc alloy pakati pe iron substrate uye yekunze yakachena zinc layer.Iyo iron-zinc alloy layer inoumbwa pamusoro peiyo workpiece panguva inopisa-dip plating, kuitira kuti simbi uye yakachena zinc layer zviri pedyo zvakanyanya.Kusanganiswa kwakanaka.Iyo nzira yemakoiri makuru egalvanized wireinogona kungorondedzerwa se: kana simbi yekushanda yakanyudzwa mumvura yakanyungudutswa yezinc, mhinduro yakasimba ye zinc uye α-iron (pakati pemuviri) inotanga kuumbwa pane interface.Iri ikristaro rinoumbwa nekunyungudutsa maatomu ezinc musimbi yepasi pakasimba.Maatomu maviri esimbi akasanganiswa, uye kukwezvana kuri pakati peatomu kudiki.
Naizvozvo, kana zinc yasvika pakuzara mumhinduro yakasimba, maatomu ezinc nesimbi anopararira mukati memumwe nemumwe, uye maatomu ezinc anopararira mukati (kana kupinda mukati) matrix yesimbi anotama mune matrix lattice, zvishoma nezvishoma anoumba alloy nesimbi, uye kupararira muSimbi mumvura yakanyungudutswa yezinki inoumba musanganiswa wesimbi inonzi FeZn13 ine zingi, inonyura muzasi mehari inopisa inonyungudutsa, uye inoita zinc slag.Kana iyo workpiece ichibviswa kubva kune zinc dipping solution, yakachena zinc layer inoumbwa pamusoro, iyo ine hexagonal crystal, uye yayo yesimbi haipfuuri 0.003%.
Kupisa-dip galvanizing, inozivikanwawo sehot-dipgalvanizing, inzira iyo simbi inonyudzwa mu zinc yakanyungudutswa kuti iwane simbi yekuputira.Nekukurumidza kusimudzira kwepamusoro-voltage simba rekufambisa, chekufambisa, uye kutaurirana, zvinodiwa zvekudzivirira zvezvikamu zvesimbi zviri kuwedzera nekukwira, uye kudiwa kwekupisa-dip galvanizing kuri kuwedzera zvakare.Kazhinji ukobvu hweiyo electro-galvanized layer i5-15 μm, ukuwo ukobvu hwekoiri hombe yakabatiswa waya layer kazhinji iri pamusoro pe35 μm, kunyangwe kukwira se200 μm.Hot-dip galvanizing ine kufukidzwa kwakanaka, dense coating, uye isina organic inclusions.
Sezvatinoziva tese, iyo zinc's anti-atmospheric corrosion inosanganisira kuchengetedzwa kwemuchina uye kudzivirira kwe electrochemical.Pasi pemamiriro ekuora kwemuchadenga, pane ZnO, Zn(OH)2 uye mabhaisikopo ekudzivirira ezinc carbonate ari pamusoro pe zinc layer, anonokesa kukora kwe zinc kusvika pamwero wakati.Iyo yekutanga firimu yekudzivirira (inozivikanwawo seye chena rust) yakakuvadzwa, uye firimu idzva richaumbwa.
Kana iyo zinc layer yakuvadzwa zvakanyanya uye ichiisa mungozi simbi substrate, zinki ichadzivirira electrochemically substrate, iyo yakajairika inogona ye zinc ndeye -0.76V, uye iyo inogoneka yesimbi ndeye -0.44V.Kana zingi nesimbi zvichigadzira bhatiri diki, zingi inonyungudika seanode, uye iron Inodzivirirwa se cathode.Zviripachena, hot-dip galvanizing iri nani pane electro-galvanizing mukukwanisa kwayo kurwisa kusvibiswa kwemhepo kwesimbi yesimbi.
Nguva yekutumira: 14-06-23