Galvanized steel kav dej yog cov kav dej uas ua los ntawm cov hlau, thiab coated nrog zinc tiv thaiv kom tsis txhob xeb. Qhov no feem ntau yog ua los ntawm ntsaws cov kav dej hauv tus dab roj hmab zinc dej. ... Kev xeb kuj tseem tshwm sim rau steel thaum nws txuas ncaj qha rau tooj liab lossis tooj dag.
Galvanized steel yog cov pa roj carbon steel uas tau xeb nrog zinc. Cov txheej txheem feem ntau ntawm zinc txheej yog cov txheej txheem kub-dip.
Cov txheej txheem kub-dip muaj cov dej tawm hauv cov pa roj carbon hlau rau hauv cov xim da dej zinc dej (kwv yees li 680 degrees Fahrenheit). Thaum cov khoom siv tshem tawm los ntawm zinc da dej thiab txias cov tshuaj tiv thaiv rau cov pa oxygen hauv cov pa tawm. Cov tshuaj tiv thaiv ua rau cov zinc ua ib feem ntawm cov hlau (ib qho hlau-zinc alloy daim ntawv cog lus). Qhov saum npoo tiav tshiab zoo li muaj qhov ua tiav crystalline lossis spangled tiav.
Thaum qhov no yog daim ntawv tshaj plaws ntawm galvanization, nws feem ntau siv rau cov khoom lag luam steel uas yav dhau los tau tsim raws li lub thickness ntawm cov khoom kawg tsis yooj yim tswj. Lwm txoj kev ntawm cov txheej txheem galvanization yog txuas ntxiv galvanizing.
Kev ua kom tas mus li ntawm galvanizing siv cov zinc txheej rau saum npoo ntawm qhov txuas txuas txuas txuas ntawm cov kav hlau (coil) thaum nws dhau los ntawm zinc da dej. Lub kauj siv mus los nrawm ntawm kwv yees li 600 ko taw ib feeb.
Raws li lub kauj hlau tawm cov hlau da dej nws nqa nrog nws ib txheej ntxiv ntawm molten zinc. Cov zinc ntxiv tau muab tshem tawm nrog cov cua ntsig (rab riam cua) los tsim cov yam xav tau tuab. Cov khoom siv yog tom qab ntawd tso cai rau txias thiab spangled tiav yog tsim.
Nruam galvanizing tso cai rau kom paub meej ntau dua ntawm cov tuab thiab feem ntau yog siv rau cov khoom lag luam steel uas tseem tsis tau tsim los. Raws li cov txheej thickness ntau dua, qhov kev pheej hmoo ntawm kev poob qee cov tshuaj thaum lub sijhawm fabrication lossis txoj kev ua tseem nce ntxiv
