57. Dab tsi yog qhov chaw ntawm cov khoom siv alloy hauv lub lauj kaub galvanized?

Cov peev txheej ntawm ntau yam khoom siv alloy hauv cov kua zinc tuaj yeem muab faib ua peb hom tseem ceeb. Ua ntej, natural inclusions inevitably tam sim no nyob rau hauv kev lag luam zinc los yog remelted zinc, xws li txhuas, hlau, cadmium, tooj liab, arsenic, antimony, thiab tin. Thib ob, txhob txwm tshaj tawm cov ntsiab lus tshwj xeeb alloying rau zinc kua rau lub hom phiaj tshwj xeeb, piv txwv li, sib txawv ntawm cov ntsiab lus txhuas los hloov kho qhov chaw tiav lossis microstructure ntawm txheej galvanized. Thib peb, cov impurities uas tsis tuaj yeem zam, suav nrog cov kab mob thiab cov av uas tuaj yeem nkag mus rau hauv lub lauj kaub galvanizing thaum lub sij hawm remelting los yog thaum ntxuav cov zinc residue hauv pem teb.