Kub dip galvanizing ntawm steel phaj tseem hu ua kub dip galvanizing.Zinc ingots yog yaj nyob rau hauv lub tropics thiab qee cov ntaub ntawv pab tau ntxiv rau hauv kub dip galvanizing.Tom qab ntawd cov hlau daim phiaj yog tsau rau hauv lub tank galvanizing thiab txheej txheej galvanizing yog txuas rau steel phaj.Lub zog ntawm kub dip galvanizing nyob ntawm nws cov corrosion kuj, thiab adhesion thiab hardness ntawm galvanized ntawv yog zoo dua.Tus nqi ntawm galvanized steel phaj tom qab galvanizing.Yog li qhov no yog qhov dav dav ntawm zinc.
Cov txheej txheem kub dip galvanizing txheej yog tsim los ntawm kub dip galvanizing txheej, uas yog tsim los ntawm hlau zinc alloy ntawm hlau matrix thiab nto ntshiab zinc txheej.Cov duab ntawm lub workpiece yog tsim los ntawm cov hlau zinc alloy txheej nyob rau hauv kub dip, thiaj li hais tias cov hlau thiab ntshiab zinc txheej kov zoo heev.Thaum cov hlau workpiece yog immersed nyob rau hauv ib tug molten zinc tov, thawj zinc thiab hlau (lub cev) yog tsim nyob rau hauv lub interface.Qhov no yog ib qho siv lead ua los ntawm zinc atoms hauv cov khoom hlau hlau.Thaum ob lub hlau atoms sib xyaw ua ke, lub zog gravitational ntawm cov atoms tsawg heev.
Yog li, thaum zinc txaus nyob rau hauv cov khoom yaj, ob lub atoms ntawm zinc thiab hlau disperse nrog ib leeg.Cov zinc atoms nyob rau hauv cov hlau matrix yog txav mus rau hauv lub lattice ntawm lub matrix, thiab cov hlau ntsiab yog maj mam tsim rau hauv alloys.Cov zinc muaj pes tsawg leeg ntawm hlau thiab intermetallic compound FeZn13 nyob rau hauv molten zinc tov thiab hauv qab ntawm kub galvanized ntawv yuav siv tau raws li zinc slag.Cov zinc txheej ntshiab uas muaj zinc leaching tov yog hexagonal siv lead ua.
Thaum qhov kub thiab txias khiav ntawm tib qhov kub thiab qhov kub tib yam yog khaws cia, qhov nyiaj ntawm cov hlau yaj tsis zoo ib yam.Nyob ib ncig ntawm 500, qhov poob ntawm cov hlau nce nrawm nrog qhov sib ntxiv ntawm qhov kub thiab qhov rwb thaiv tsev.Nws qis dua lossis siab dua 480 ~ 510c, thiab qhov poob ntawm cov hlau epitaxial qeeb qeeb, thiab nws nyuaj rau kev ntes nrog lub sijhawm.Yog li ntawd, txhua leej txhua tus yuav hu 480 ~ 510c lub malignant melting tsam.
Nyob rau hauv qhov kub thiab txias no, zinc tov yog hnyav heev corroded rau lub workpiece thiab zinc lub lauj kaub, thiab cov hlau yog poob ntawm 560 degrees Celsius ntxiv kom pom tseeb, thiab zinc yuav yog cov hlau substrate saum 660 degrees Celsius, zinc slag yuav ntxiv. sai sai, plating tsis tuaj yeem siv.Yog li, electroplating yog nqa tawm nyob rau hauv thaj tsam ntawm 430 ~ 450 degrees Celsius.
Post lub sij hawm: 24-11-22