Munguva yekufambisa simba, shongwe yesimbi chinhu chakakosha zvikuru. Munguva yekugadzirwa kwezvinhu zvesimbi shongwe yesimbi, nzira yekugadzira yekupisa-dip galvanizing inowanzogamuchirwa pamusoro pekuchengetedza pamusoro pezvigadzirwa zvesimbi kubva mukuora kwemhepo yekunze uye kwakasiyana nharaunda. Iko kushandiswa kwekupisa-dip galvanizing process kunogona kuwana yakanaka anti-corrosion athari. Nezvinodiwa zvepamusoro zvekufambiswa kwemagetsi, izvo zvinodiwa pakugadzirwa kwezvigadzirwa zvesimbi zvine galvanized zvakare zvakakwirira.
(1) Nheyo yekutanga yekupisa dip galvanizing
Kupisa dip galvanizing, inozivikanwawo sehot dip galvanizing, ndiyo imwe yedzakanakisa nzira dzekuputira dzekudzivirira simbi substrate. Mune zinc yemvura, mushure mekunge simbi yekushanda yaitwa nemuviri uye makemikari kurapwa, simbi yekushanda inonyudzwa muzinc yakanyungudutswa ine tembiricha ye440 ℃ ~ 465 ℃ kana kupfuura yekurapa. Iyo substrate yesimbi inopindirana neiyo zinc yakanyungudutswa kuti igadzire Zn Fe goridhe layer uye yakachena zinc layer uye inovhara iyo yese pamusoro pesimbi yekushanda. Iyo nzvimbo yakabatiswa ine kumwe kuoma, inokwanisa kumirisana nekukwesha kukuru uye kukanganisa, uye ine musanganiswa wakanaka nematrix.
Iyi nzira yeplating haina kungoita corrosion kuramba kwegalvanizing, asiwo ine Zn Fe alloy layer. Iyo ine zvakare yakasimba corrosion resistance iyo isingagoni kuenzaniswa ne galvanizing. Naizvozvo, iyi nzira yekuputira inonyanya kukodzera kune dzakasiyana siyana dzakasimba nharaunda dzinoparadza senge yakasimba asidhi, alkali uye mhute.
(2) Kuita maitiro ekupisa dip galvanizing
Iyo ine gobvu uye dense yakachena zinc layer pamusoro pesimbi, iyo inogona kudzivirira kusangana kwesimbi substrate nechero corrosion solution uye kudzivirira iyo substrate yesimbi kubva mukuora. Mumamiriro ekunze, iyo yakaonda uye dense zinc oxide layer inoumbwa pamusoro peiyo zinc layer, iyo yakaoma kunyungudika mumvura, saka inoita basa rakati mukudzivirira simbi matrix. Kana zinc oxide uye zvimwe zvikamu zviri mumhepo zvikaita insoluble zinc munyu, iyo anti-corrosion effect inonyanya kunaka.
Mushure mekupisa-dip galvanizing, simbi iyi ine Zn Fe alloy layer, iyo ine compact uye ine yakasarudzika corrosion resistance mumakungwa emunyu mhute mhepo uye maindasitiri mamiriro. Nekuda kwekubatana kwakasimba, Zn Fe inosanganiswa uye ine yakasimba kupfeka kuramba. Nekuti zinc ine yakanaka ductility uye alloy layer yakanyatsobatanidzwa kune substrate yesimbi, inopisa-dip galvanized workpiece inogona kuumbwa nekutonhora kwekurova, kukunguruka, kudhirowa kwewaya, kukotama, nezvimwewo pasina kukuvadza zinc coating.
Mushure mekupisa galvanizing, iyo simbi yekushanda yakaenzana neannealing kurapwa, iyo inogona kunyatso kuvandudza ma mechanic properties yesimbi substrate, kubvisa kushushikana kwesimbi workpiece panguva yekugadzira uye welding, uye inobatsira kushandura simbi workpiece.
Iyo yepamusoro yesimbi workpiece mushure mekupisa galvanizing inopenya uye yakanaka. Pure zinc layer ndiyo yakawanda yepurasitiki zinc layer mune inopisa-dip galvanizing. Zvimiro zvayo zvakangofanana neiyo zinc yakachena, uye ine ductility, saka inoshanduka.
Nguva yekutumira: Aug-26-2022
