Kupisa dip galvanizing, inozivikanwawo sehot dip galvanizing uye inopisa dip galvanizing, inzira inoshanda yekudzivirira ngura yesimbi, inonyanya kushandiswa kune zvivakwa zvesimbi uye zvivakwa mumaindasitiri akasiyana siyana.Iko kunyudza zvikamu zvesimbi zvakanyungudutswa mu zinc yakanyungudutswa inenge 500 ℃ kunamatira zinc layer kune pamusoro pezvikamu zvesimbi, nekudaro kuzadzisa chinangwa chekudzivirira ngura.Kupisa dip galvanizing process flow: chigadzirwa chapedza kunhonga - kuwachisa mvura - kuwedzera simbi yekuwedzera - kuomesa - kuturika plating - kutonhodza - kurapa - kuchenesa - kukwenenzvera - kupedza kupisa dip galvanizing 1. Dip galvanizing inogadzirwa kubva kune yekare dip galvanizing nzira. , uye ine nhoroondo yemakore anopfuura 170 kubvira France yakaisa dip galvanizing kuindasitiri muna 1836. Mumakore makumi matatu apfuura, nekukurumidzira kusimukira kwesimbi inotonhora yakakungurutswa, indasitiri yekupisa yekunyungudutsa yakasimukira pamwero mukuru.
Kupisa dip galvanizing, inozivikanwawo sekuti hot dip galvanizing, inzira yekuwana yekubatisa simbi pazvikamu zvesimbi nekunyudza mu zinc yakanyungudutswa.Nekukurumidza kukura kwepamusoro-voltage simba rekufambisa, kutakura, uye kutaurirana, zvinodiwa zvekuchengetedzwa kwezvikamu zvesimbi zviri kuwedzera, uye kudiwa kwekupisa dip galvanizing kuri kuwedzerawo.
Kushanda kwekudzivirira
Kazhinji, ukobvu hwemarata dhizaini ndeye 5 ~ 15 μ m.Iyo inopisa-dip galvanized layer iri pa 35 μ Pamusoro pe m, kunyange kusvika pa 200 μ m. Dip galvanizing inopisa ine kugona kuvhara kwakanaka, kuvharika kwakakora, uye hakuna organic inclusions.Zvinonyatsozivikanwa kuti maitiro ekudzivirira kwe zinc kumhepo yemhepo anosanganisira kudzivirira kwemuchina uye kudzivirira kwe electrochemical.Pasi pemamiriro ekuora kwemuchadenga, pamusoro pezinc layer ine ZnO, Zn (OH) 2, uye basic zinc carbonate protective films, iyo pamwero yakati inoderedza kukora kwezingi.Kana iyi firimu inodzivirira (inozivikanwawo sewhite rust) yakakanganiswa, ichaita firimu idzva.Kana iyo zinc layer yakakuvadzwa zvakanyanya uye ichiisa mungozi iyo iron substrate, zinc inopa electrochemical kudzivirira kune substrate.Izvo zvinogoneka zvezinc ndeye -0.76V, uye chiyero chesimbi chinogona kuita -0.44V.Kana zinc nesimbi zvichigadzira bhatiri diki, zinc inonyungudika seanode, uye iron inodzivirirwa secathode.Zviripachena, iyo airspheric corrosion resistance ye inopisa dip galvanizing pa base metal iron iri nani pane iya ye electrogalvanizing.
Zinc coating yekugadzira maitiro
Kuumbwa kweiyo inopisa dip galvanized layer inzira yekugadzira iron zinc alloy pakati pesimbi substrate uye yakachena zinc layer kunze kweZ. Iyo iron zinc alloy layer inoumbwa pamusoro peiyo workpiece panguva inopisa dip plating, iyo. inobvumira kusanganiswa kwakanaka pakati pesimbi uye yakachena zinc layer.Maitiro acho anogona kungotsanangurwa sezvizvi: Kana iyo iron workpiece yakanyudzwa mumvura yakanyungudutswa yezinc, zinc uye zinc zvinotanga kuumbwa pane interface α Iron (body core) yakasimba melt.Iri ikristaro rinoumbwa nekunyungudutsa maatomu ezinc munzvimbo yakasimba yesimbi yepasi.Maatomu maviri esimbi akasanganiswa, uye kukwezvana kuri pakati peatomu kudiki.Naizvozvo, kana zinc yasvika pakuzara mukunyunguduka kwakasimba, maatomu maviri ekutanga ezingi nesimbi anopararira kune rimwe nerimwe, uye maatomu ezinc anopararira mukati (kana kupinda mukati) matrix yesimbi anotama mureti rematrix, zvishoma nezvishoma achigadzira alloy nesimbi. , nepo simbi uye zingi zvakapararira mumvura yakanyungudutswa yezinki nesimbi yakasimba-yakasimba inoumba intermetallic compound FeZn13, iyo inonyura muzasi kwehari inopisa inopisa, ichiita zinc slag.Kana iyo workpiece ichibviswa kubva kune zinc dipping solution, yakachena zinc layer inoumbwa pamusoro, iyo ine hexagonal crystal.Iyo iron yemukati haina kupfuura 0.003%.
Misiyano yehunyanzvi
Kudzivirirwa kwekuora kwekupisa kunopisa kwakakwira zvakanyanya kudarika kutonhora kwe galvanizing (inozivikanwawo se galvanization).Kupisa galvanizing hakuzoiti ngura mumakore mashomanana, nepo kutonhora kunopisa kunopera mumwedzi mitatu.
Iyo electrogalvanizing process inoshandiswa kuchengetedza simbi kubva mukuora."Pachave nechakanaka chekudzivirira chesimbi pamipendero uye pamusoro pechigadzirwa, icho chinowedzera chikamu chakanaka kune chinoshanda.Mazuva ano, mabhizinesi makuru ari kuwedzera zvinodikanwa zvezvikamu zvechigadzirwa uye tekinoroji, saka zvakafanira kugadzirisa tekinoroji panguva ino. "
Nguva yekutumira: Mar-22-2023