Yuav ua li cas zinc plated ruaj ntseg rau steel?

Kev tsim cov zinc txheej ntawm cov kav hlau muaj kev sib cuam tshuam ntawm lub cev thiab tshuaj lom neeg ntawm cov kav hlau thiab cov zinc molten. Thaum zinc nyob hauv lub xeev ua kua, nws tuaj yeem erode thiab yaj feem ntau cov hlau tsis hais lawv cov ntsiab lus melting. Noj cov "qhuav" ntawm kub-dip galvanizing ua piv txwv, steel kav coated nrog zinc chloride flux yog preheated rau ib tug kub ntawm 200-250 degree nyob rau hauv ib tug qhuav qhov cub ua ntej yuav dipped rau hauv zinc molten ntawm 480-500 degree. Ua ntej, cov yeeb nkab steel absorbs ib tug loj npaum li cas ntawm tshav kub instantaneously, ua rau cov zinc cov kua nyob rau hauv nws nto dheev txias thiab solidify, tsim ib tug khoom txheej txheej. Vim lub nruam thiab ntau cov khoom cua sov, lub plhaub no melts sai sai. Thaum qhov kub ntawm cov yeeb nkab steel sib npaug nrog qhov kub ntawm cov zinc molten, hlau thiab zinc pib sib cuam tshuam. Yog li ntawd, cov txheej txheem tiag tiag ntawm galvanizing steel kav nrog zinc koom nrog cov kauj ruam hauv qab no: cov khoom hlau tawg; kev sib xyaw ntawm cov hlau thiab zinc los ua cov hlau-zinc alloy compound, uas ua rau cov hlau-zinc alloy txheej; nyob rau sab nrauv ntawm cov hlau-zinc alloy txheej, ib txheej zinc ntshiab yog txuas nrog. Thaum txias, cov zinc txheej ntshiab crystallizes, nrog rau sab hauv ntawm zinc txheej bonding rau steel yeeb nkab substrate. Yog li, cov txheej txheem kub-dip galvanizing feem ntau yog txheej txheem ntawm kev tsim cov zinc-plated txheej los ntawm diffusion.