Dab tsi cuam tshuam zinc dross muaj nyob rau ntawm galvanized txheej ntawm galvanized steel kav?

Thaum lub sij hawm kub-dip galvanizing, zinc dross nyob rau hauv molten zinc yog tov nyob rau hauv lub zinc da dej thiab yuav embedded nyob rau hauv lub galvanized txheej tom qab txheej steel yeeb nkab. Surrounded los ntawm cov zinc ntshiab, cov zinc dross hais ua raws li cov zinc txheej ntshiab. Tsis tas li ntawd, cov ntsiab lus hlau ntxiv nyob rau hauv cov zinc molten txo nws cov wettability rau saum npoo ntawm cov yeeb nkab steel, uas ua rau tsis sib xws ntawm cov txheej txheem galvanized. Yog li ntawd, galvanized txheej txheej saum npoo yuav ntxhib thiab tsis sib xws, nrog rau qhov pom ntawm qhov muag plooj, thiab nyob rau hauv cov xwm txheej hnyav, cov qog loj thiab me me tuaj yeem tsim. Zinc dross tsub kom lub brittleness ntawm cov ntshiab zinc txheej, ua rau galvanized txheej tev tawm thaum khoov; nws kuj ua rau cov ntsiab lus tsis tseeb thaum lub sij hawm kuaj tooj liab sulfate. Peb paub tias ntau impurities nyob rau hauv cov ntshiab zinc txheej, qhov tsawg corrosion-resistant nws ua. Ib yam li ntawd, zinc dross suav nrog hauv cov zinc txheej ntshiab tuaj yeem tsim cov nyhuv micro-galvanic, corroding ib puag ncig cov zinc txheej ua ntej. Ib qho kev nce ntawm zinc dross ua rau cov txheej tuab galvanized, yog li nce zinc noj. Piv txwv li, thaum lub sij hawm immersion yog 30 vib nas this thiab molten zinc kub yog 450 degree, qhov hnyav ntawm galvanized txheej ntawm cov yeeb nkab steel yog 330 grams ib cubic meter thaum cov hlau cov ntsiab lus nyob rau hauv. zinc molten yog 0.06%; Thaum cov ntsiab lus hlau nyob rau hauv molten zinc nce mus rau 0.25%, qhov hnyav ntawm txheej galvanized ntawm cov yeeb nkab steel nce mus rau 450 grams ib cubic meter.