Txoj Cai Ntawm Zinc Spraying Tshuab

Rau cam khwb cia hlau kav faus underground, ua hauj lwm nyob rau hauv cov av ib puag ncig, sab nrauv phab ntsa tsuas yog coated nrog asphalt kom tau raws li qhov yuav tsum tau ntawm kev tiv thaiv corrosion. Txawm li cas los xij, rau cov av uas muaj corrosive heev, xws li cov av swampy, av nkos, cov av uas muaj sulfate, cov khib nyiab cov av thiab cov av uas muaj kuab paug los ntawm cov dej, qhov kev tiv thaiv corrosion ntawm tsuas yog txheej asphalt yog qhov tsis txaus siab. Lub tuam txhab Fab Kis Musongqiao tau pib ua cov yeeb nkab simulation kev sib piv hauv xyoo 1949. Cov txiaj ntsig tau pom tias cov nyhuv tiv thaiv corrosion ntawm cov txheej txheem sib xyaw yog qhov zoo tshaj plaws tom qab cov yeeb nkab tau annealed kom khaws cov oxide nplai, thiab tom qab ntawd txau nrog zinc thiab tom qab ntawd. coated nrog asphalt. Zinc txheej muaj ob txoj haujlwm: 1. Txij li thaum lub electrochemical point ntawm zinc yog qis dua cov hlau, cov tshuaj tiv thaiv zinc tuaj yeem tiv thaiv cov yeeb nkab hlau los ntawm corrosion; 2. Thaum zinc txheej yog corroded los ntawm ntsev tov, insoluble compounds (Zinc phosphate, zinc chloride, zinc sulfate) npog lub nto ntawm cov yeeb nkab, yog li slowing lub intrusion ntawm corrosive xov xwm.