Dab tsi yog Zinc Phosphate Coatings

Zinc phosphate txheej yog preffered nyob rau hauv cov ntaub ntawv ntawm yuav tsum tau muaj corrosion kuj ntau dua li hlau phosphate. Nws tuaj yeem siv los ua lub hauv paus rau kev pleev xim (tshwj xeeb tshaj yog rau thermosetting hmoov txheej), ua ntej kev kos duab txias / txias txias ntawm cov hlau thiab ua ntej daim ntawv thov kev tiv thaiv roj / lubrication.
Qhov no feem ntau yog txoj kev xaiv thaum lub neej ntev nyob rau hauv corrosive tej yam kev mob yuav tsum tau. Txheej kuj zoo heev nrog zinc phosphate vim hais tias cov crystals tsim ib tug ntxeem tau nto uas muaj peev xwm nqus tau thiab mechanically cuab lub txheej zaj duab xis. Ntawm qhov tod tes, zinc phosphate systems feem ntau xav tau ntau theem kev kho mob, yog qhov nyuaj rau tswj thiab kim dua rau nruab thiab khiav lag luam. Zinc zaj duab xis feem ntau tso rau ntawm 200-500 milligrams ib square feet. Tag nrho lub sij hawm xav tau yog li 4 feeb rau ib qho tshuaj tsuag.
Rau underpaint zinc phosphate coatings, txheej hnyav nws txawv ntawm 2 - 6 g / m². Tsis xav tau ntau dua coatings hnyav. Txheej hnyav ntawm zinc phosphate txheej ua ntej txias txias / txias deformation ua haujlwm ntawm cov hlau yuav tsum siab dua, nws txawv ntawm 5 - 15 g / m². Rau cov txheej txheem ntawm cov hlau / hlau yuav tsum tau kho nrog roj lossis siv quav ciab, txheej hnyav muaj qhov siab tshaj plaws ntawm 15 - 35 g / m².