Kub-dip galvanizing yog cov txheej txheem metallurgical. Los ntawm qhov kev xav ntawm microscopic, cov txheej txheem kub-dip galvanizing muaj ob qhov sib npaug sib npaug: thermal equilibrium thiab zinc-hlau txauv equilibrium. Thaum steel workpieces raus hauv molten zinc ntawm kwv yees li 450 degree, lub workpieces ntawm chav tsev kub nqus cua sov los ntawm zinc kua. Raws li qhov kub ntawm cov workpieces nce siab tshaj 200 degree, kev sib cuam tshuam ntawm zinc thiab hlau maj mam ua pom tseeb, nrog zinc infiltrating saum npoo ntawm cov hlau workpieces.
Raws li qhov kub ntawm cov khoom ua haujlwm maj mam nce mus txog ntawm cov zinc molten, ib txheej txheej hlau nrog ntau cov zinc-hlau sib piv cov ntaub ntawv rau ntawm qhov chaw ntawm lub workpieces, tsim cov txheej txheej txheej ntawm zinc txheej. Nyob rau tib lub sijhawm, cov txheej txheem sib txawv ntawm cov txheej txheem sib txawv ntawm cov txheej txheem sib txawv. Los ntawm qhov kev xav macroscopic, cov txheej txheem no tshwm sim raws li kev tso dej ntawm cov khoom ua haujlwm rau hauv cov zinc molten, ua rau zinc ntog. Thaum cov tshuaj tiv thaiv zinc-hlau maj mam nce mus txog qhov sib npaug, zinc nto calms. Thaum lub workpieces raug tshem tawm ntawm molten zinc thiab lawv qhov kub thiab txias maj mam txo qis dua 200 degree, zinc-hlau cov tshuaj tiv thaiv nres, thiab kub-dip galvanized txheej yog tsim nrog ib tug txiav txim thickness.
Lub hauv paus tseem ceeb cuam tshuam rau lub thickness ntawm zinc txheej muaj xws li cov ntsiab lus ntawm lub hauv paus hlau, nto roughness ntawm cov hlau, cov ntsiab lus thiab tis ntawm active yam xws li silicon thiab phosphorus nyob rau hauv cov hlau, kev nyuaj siab nyob rau hauv cov hlau, geometric qhov ntev. ntawm lub workpiece, thiab kub-dip galvanizing txheej txheem.
Ob qho tib si thoob ntiaj teb tam sim no thiab Suav cov qauv rau kub-dip galvanizing categorize steel thicknesses rau hauv ib ntus, qhia qhov nruab nrab thiab hauv zos yam tsawg kawg nkaus thicknesses ntawm zinc txheej uas yuav tsum tau ua kom tiav los xyuas kom meej corrosion kuj. Workpieces nrog txawv steel thicknesses yuav tsum sib txawv npaum li cas ntawm lub sij hawm kom ncav cuag thermal equilibrium thiab zinc-hlau pauv equilibrium, ua rau sib txawv txheej thicknesses.
Qhov nruab nrab txheej thickness teev nyob rau hauv cov qauv yog raws li nyob rau hauv industrial ntau lawm kev derived los ntawm cov aforementioned galvanizing mechanism, thaum lub zos thickness yuav siv sij hawm mus rau hauv tus account lub unevenly faib ntawm zinc txheej thickness thiab empirical qhov tseem ceeb yuav tsum tau rau corrosion kuj ntawm lub txheej.
