Yuav ua li cas zinc plated ruaj ntseg rau steel?

Kev tsim cov zinc txheej ntawm cov kav hlau muaj kev sib txuam 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. Siv cov txheej txheem "qhuav" kub-dip galvanizing ua piv txwv, cov kav hlau steel coated nrog zinc chloride hnyav yog preheated rau qhov kub ntawm 200-250° C nyob rau hauv ib lub qhov cub kom qhuav ua ntej yuav immersed zinc molten ntawm 480-500 °C. Thaum xub thawj, cov kav dej steel nqus cov cua kub sai sai, ua rau cov kua zinc ntawm cov yeeb nkab saum npoo kom khov sai, ua rau lub plhaub sab nraud. Vim muaj cov khoom siv hluav taws xob tas mus li thiab ntau, lub plhaub no melts sai sai. Thaum qhov kub thiab txias ntawm cov kav hlau mus txog qhov 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 ua raws li cov kauj ruam no: cov 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 adhering rau steel yeeb nkab substrate. Yog li, cov txheej txheem kub-dip galvanizing feem ntau cuam tshuam nrog kev tsim cov zinc txheej los ntawm diffusion.