Qhov cuam tshuam ntawm Lead (Pb) hauv Molten Zinc ntawm Kub-Dip Galvanizing

Lead (Pb), nrog lub cubic lattice qauv thiab ib tug grey tsos, muaj ib tug atomic hnyav ntawm 207.21, ib tug melting point ntawm 327 degree, thiab ib tug boiling point ntawm 1540 degree . Hauv kev kub-dip galvanizing, txhuas tsis muaj qhov tseem ceeb rau cov txheej txheem galvanized, thiab nws cov ntsiab lus zoo dua tsis pub tshaj 0.3% (sib npaug rau cov ntsiab lus txhuas hauv Zn-4 qib zinc), vim tias nws muaj peev xwm muaj hluav taws xob ntau dua thaum ua ke nrog zinc, yog li txo cov corrosion kuj ntawm galvanized txheej. Thaum cov ntsiab lus txhuas ntau tshaj 0.5%, nws tsis tsuas yog exacerbates qhov tsis zoo ntawm corrosion tab sis kuj ua rau cov galvanized txheej zoo li dull thiab lifeless. Cov kev kuaj sim tau lees paub tias cov hlau lead tsuas yog muaj nyob rau hauv cov txheej txheem zinc ntshiab thiab tsis tuaj ntawm cov hlau-zinc alloy txheej. Yog li ntawd, txhuas raws li cov khoom siv alloy ntawm zinc tsis muaj qhov cuam tshuam loj rau cov tshuaj tiv thaiv hlau-zinc. Qee lub chaw tsim khoom qhia cov hmoov txhuas rau hauv lub lauj kaub galvanizing, tsim ib txheej tuab li 10-30 centimeters nyob rau hauv qab. Lub hom phiaj ntawm qhov no yog los tiv thaiv zinc slag los ntawm kev daws teeb meem thiab ua raws li cov hlau hauv qab vim cua sov, thiab pab txhawb kev tshem tawm cov zinc slag thaum lub sij hawm skimming vim cov hlau lead tsis tshua muaj zog. Txawm li cas los xij, qee lub tsev lag luam tau tso tseg siv lead ua rau ntau yam laj thawj. Ua ntej, txhuas tsis tuaj yeem rov qab tau zoo, nce nqi. Qhov thib ob, feem ntau ntawm galvanizing lauj kaub tam sim no ntiav sab cua sov. Ib qho tseem ceeb ntawm cov cua sov yog pauv ntawm sab sauv ntawm sab phab ntsa ntawm lub lauj kaub galvanizing, ua rau qhov kub ntawm lub lauj kaub hauv qab qis dua, ua rau kev tiv thaiv hauv qab tsis tsim nyog. Thib peb, kev tso tawm ntawm cov hlau lead vapor ua rau muaj kev phom sij rau kev noj qab haus huv rau cov neeg ua haujlwm thiab ua rau ib puag ncig.