1.Puas yog xim-coated coil ib yam khoom uas tiv taus acids thiab alkalis?
Ua ntej thiab qhov tseem ceeb tshaj plaws, nws yuav tsum paub meej tias lub hom phiaj tsim qauv ntawm cov xim -coated coils yog huab cua tsis kam (UV hluav taws xob, nag thiab cua) thiab zoo nkauj. Lawv cov organic coatings feem ntau muaj tsis muaj zog tiv thaiv cov acids thiab alkalis. Lawv tsim nyog rau qhov tsis muaj zog corrosion nyob rau hauv atmospheric ib puag ncig tab sis tsis ncaj, ntev -lub sij hawm sib cuag nrog acidic los yog alkaline kua los yog siab -concentration acidic los yog alkaline vapors.
2.Dab tsi yog peb yam tseem ceeb uas cuam tshuam rau lub sijhawm acid thiab alkali tsis kam?
Tsis muaj zog acids/bases, tsis tshua muaj concentrations: xws li dilute acetic acid, citric acid, qis-cov tshuaj ntxuav tu, thiab dej nag (feem ntau tsis muaj zog acidic). High- cov txheej txheem zoo tuaj yeem tiv taus cov no tau ntev nrog kev cuam tshuam tsawg.
Qhov nruab nrab ntawm cov kua qaub thiab cov hauv paus: xws li cov khoom siv tu thiab cov pa phem hauv huab cua hauv thaj chaw tshuaj lom neeg (acid pos, alkali pos huab). Cov no yuav ua rau cov txheej txheem maj mam poob nws cov gloss, chalk, thiab muag muag, ua rau nws lub neej luv luv ntawm xyoo mus rau lub hlis lossis ntau lub lis piam.
Muaj zog acids / bases, siab concentrations: xws li concentrated sulfuric acid, hydrochloric acid, thiab sodium hydroxide daws. Cov no yuav ua rau cov txheej txheem ua kom muaj cov tshuaj tiv thaiv sai sai hauv feeb mus rau cov xuab moos, ua rau pom kev tawg, tawg, thiab tev tawm, ua rau poob nws txoj haujlwm tiv thaiv.
3.Dab tsi yog qhov raug mob thiab ib puag ncig?
Hu rau txoj kev:
Qee zaus splashes vs. immersion ntev: txawv heev. Kev tu tam sim ntawd tom qab luv luv - kev sib cuag yuav muaj kev cuam tshuam me ntsis; ntev immersion yuav inevitably ua rau tsis ua hauj lwm sai.
Gas theem (vapor/mist) vs. theem ua kua: High concentrations ntawm acid thiab alkali vapors yog sib npaug zos rau coatings thiab tseem nyuaj rau tiv thaiv.
Kub: Rau txhua txhua 10℃qhov kub thiab txias, cov tshuaj tiv thaiv tus nqi kwv yees li ob npaug. Cov kub kub zoo heev ua kom cov txheej txheem corrosion ntawm cov txheej txheem los ntawm cov kua qaub thiab alkalis.
Mechanical stress: Nyob rau hauv lub xub ntiag ntawm acids thiab alkalis, yog hais tias lub txheej yog ib txhij raug kev nyuaj siab los ntawm cua loads, vibration, los yog kub txawv, nws yuav ua rau kom tawg thiab tev ntawm txheej.
4.Dab tsi yog qhov tsis muaj zog ntawm zinc- txhuas txheej?
Acids yaj zinc plating: Txawm tias muaj micropores nyob rau hauv cov txheej, cov kua qaub nkag mus rau hauv corrosion sai, poob ntawm cathodic tiv thaiv, thiab tiam ntawm hydrogen gas, ua rau blistering.
Alkalis corrode aluminium-zinc plating: Aluminium, tshwj xeeb, reacts nyob rau hauv alkaline ib puag ncig.
Txiav ntug thiab qhov chaw puas yog qhov tseem ceeb tsis muaj zog: Ib qho kev txiav tawm ua rau cov hlau rhiab heev plating ncaj qha rau acidic lossis alkaline ib puag ncig, ua rau muaj kev xeb sai thiab dav. Txhua qhov kev txiav yuav tsum nruj nruj nrog cov kua qaub- thiab alkali- tiv taus cov sealants lossis cov txheej tshwj xeeb.
5.Dab tsi yog cov kev xaiv thiab cov lus qhia?
Tsis muaj kev ua neej nyob thoob ntiaj teb: Tsis txhob nug "Nws yuav kav ntev npaum li cas?", tab sis txheeb xyuas "Qhov txheej twg yuav kav ntev dua hauv ib puag ncig tshwj xeeb?"
Kev xaiv cov khoom siv yog qhov tseem ceeb:
Nyob rau hauv ib puag ncig uas muaj kua qaub los yog alkali paug, PVDF fluorocarbon txheej yog tib qho kev xaiv tsim nyog.
Qhia meej tsis suav nrog cov txheej txheem xws li PE.
Design yog qhov tseem ceeb:
Tsis txhob siv cov xim -coated steel los xij ntawm cov qauv uas cov kua qaub lossis alkali tuaj yeem sib sau.
Tsim kom muaj qhov cua thiab tso pa tawm rau cov kua qaub thiab alkali vapors.
Kev tiv thaiv yog qhov tseem ceeb:
100% sealing thiab corrosion tiv thaiv rau tag nrho cov machined txiav thiab drilled qhov yog ib tug nthuav dav uas txiav txim siab zoo los yog tsis ua hauj lwm.
Tsim kom muaj kev tu thiab tu tsis tu ncua kom tshem tawm cov kab mob ntawm qhov chaw.