67. Dab tsi yog qhov zoo thiab qhov tsis zoo ntawm kev ntxiv txhuas rau zinc kua?

67. Dab tsi yog qhov zoo thiab qhov tsis zoo ntawm kev ntxiv txhuas rau zinc kua? (1) Cov txiaj ntsig ntawm kev ntxiv cov hmoov txhuas zinc muaj xws li txo lub sijhawm yaj, txo qis corrosion ntawm galvanized pots, yooj yim tshem tawm slag, thiab tiv thaiv adhesion ntawm zinc slag thiab lub lauj kaub hauv qab. Tsis tas li ntawd, txoj kev no tseem ua haujlwm rau kub -dip galvanized nyias steel daim hlau kom ua tiav cov qauv zoo nkauj.
Daim ntawv thov ntawm cov hlau lead txhim kho zinc da dej lub wettability rau hlau nyob rau hauv galvanized steel, kom ntseeg tau tias uniform faib thoob plaws hauv cov yeeb nkab nto. Cov txheej txheem no txhim kho cov tsos thiab gloss ntawm cov txheej txheem galvanized (nyob rau hauv tus qauv txhuas cov ntsiab lus ntawm 0.2% -0.25%, sib npaug rau cov ntsiab lus ntawm cov hmoov txhuas ntawm Zn-4 qib). Thaum cov zinc da dej muaj cov qib hlau siab (piv txwv li, zinc sludge tseem ceeb), ntxiv cov hmoov lead hauv cov nqi tsim nyog tuaj yeem txhawb nqa nws cov wettability.
(2) Qhov tsis zoo ntawm kev ntxiv cov hlau lead rau zinc da dej: Ua ntej, nws txo qhov fluidity ntawm zinc da dej. Raws li pom nyob rau hauv daim duab 3-19, zinc da dej qhia qhov tsis zoo tshaj plaws fluidity thaum cov ntsiab lus txhuas yog 0.5%, thiab tsuas yog thaum cov ntsiab lus txhuas nce mus txog 2% cov fluidity rov qab mus rau cov zinc ntshiab.
Qhov thib ob, cov ntsiab lus txhuas ntau dhau tsis tsuas yog ua tsis tiav qhov ua tiav ntawm cov txheej txheem galvanized raws li tau hais ua ntej, tab sis ua rau nws tig tsaus grey. Yog li, cov ntsiab lus txhuas feem ntau txwv rau qis dua 0.5%, nrog rau qib feem ntau yog nyob ib ncig ntawm 0.24%. Qhov no yog piv txwv los ntawm chav tsev galvanizing rau sawb hlau ntawm Wuhan Iron thiab Steel Company lub txias - dov cog. Tsis tas li ntawd, cov ntsiab lus ntawm cov hlau lead ntau dua nyob rau hauv cov txheej txheem galvanized yuav cuam tshuam rau corrosion kuj; Txawm li cas los xij, qee cov kws tshawb fawb tau sib cav tias qhov cuam tshuam tsis zoo.