1.Dab tsi yog lub hauv paus ntsiab lus tom qab corrosion kuj ntawm cov xim -coated steel coils?
Kev tiv thaiv corrosion ntawm pre-coated steel coils feem ntau yog nyob ntawm cov organic txheej (xim) ntawm lawv qhov chaw. Cov txheej no ua raws li lub cev tsis muaj zog, cais cov hlau sab hauv los ntawm ib puag ncig sab nraud. Yog li ntawd, lub peev xwm los tiv thaiv cov kua qaub thiab alkali corrosion nyob ntawm cov tshuaj stability ntawm no organic txheej.
2.Yuav ua li cas cov kua qaub-tiv taus yog xim-coated steel coils?
Zuag qhia tag nrho kev ua tau zoo: kwv yees zoo. Cov txheej txheem polyester feem ntau muaj kev tiv thaiv zoo rau diluted, tsis yog - oxidizing acids (xws li sulfuric acid thiab hydrochloric acid pos huab hauv cov huab cua, thiab kua qaub nag).
Tolerance Range: Feem ntau tolerable nyob rau hauv acidic ib puag ncig nrog ib tug pH ntawm 4 thiab saum toj no.
Limitations thiab Risks:
Muaj zog oxidizing acids (xws li concentrated sulfuric acid thiab nitric acid) yuav ua rau cov organic coatings sai heev.
High concentrations ntawm acid los yog ntev kev sib cuag ncaj qha nrog acidic daws yuav ua rau lub txheej kom soften, hlwv, thiab poob nws gloss, thaum kawg ua rau txheej tsis ua hauj lwm.
Acid los nag- thaj chaw muaj kev lag luam lossis thaj chaw ntug dej hiav txwv yog cov ntawv thov raug rau cov xim -coated coils, ua kom pom lawv cov kua qaub tiv thaiv.
3.Yuav ua li cas alkali- tiv taus cov xim -coated coil?
Zuag qhia tag nrho kev ua tau zoo: Tsis zoo. Qhov no yog ib qho tsis muaj zog ntawm cov organic coatings.
Yog vim li cas: Lub ntsiab Cheebtsam ntawm cov organic coatings yog resins xws li polyester thiab epoxy. Cov ester bonds nyob rau hauv lawv cov qauv molecular yog nquag saponification nyob rau hauv alkaline tej yam kev mob, ua rau yaig, softening, tsis adhesion, thiab txawm tev ntawm txheej.
Kev kam rau siab: Feem ntau, nws tsuas tuaj yeem zam qhov tsis muaj zog alkaline ib puag ncig nrog tus nqi pH qis dua 8.
Limitations thiab Risks:
Txawm tias muaj cov khoom alkaline xws li cov cement thiab txiv qaub dej tuaj yeem ua rau cov txheej txheem puas tsuaj yog tias lawv nkag mus rau hauv kev sib cuag ncaj qha los yog ua raws li cov txheej txheem ntev. Yog li ntawd, nyob rau hauv kev tsim kho tshiab, xim -coated steel los xij yuav tsum tsis txhob sib cuag ncaj qha nrog cov cement nto uas tsis qhuav tag.
Alkaline Cheebtsam hauv cov tshuaj ntxuav kuj tuaj yeem ua rau cov txheej txheem puas.
4.Dab tsi yog qhov tseem ceeb cuam tshuam rau acid thiab alkali tsis kam?
Txheej hom (Qhov tseem ceeb tshaj plaws)
Standard Polyester: General -lub hom phiaj, tiv taus cov acids tsis muaj zog, tab sis tsis zoo alkali tsis kam.
Silicone-Modified Polyester: Cov huab cua zoo dua, acid thiab alkali tsis kam zoo ib yam li lossis zoo dua me ntsis piv rau cov polyester li niaj zaus.
High- Durability Polyester/PVC: Cov huab cua zoo heev, kev ruaj ntseg tshuaj zoo dua, muaj zog tiv taus acid los nag thiab chalking, tab sis tseem tsis muaj zog alkalis.
PVC Plastisol: Txheej tuab, zoo dua lub cev thaiv kev cuam tshuam, thiab cov kua qaub thiab alkali zoo dua li polyester zoo tib yam.
Epoxy Txheej: Feem ntau zoo tshuaj tiv thaiv (xws li alkali tsis kam), tab sis huab cua tsis zoo; feem ntau siv los ua primer.
Txheej zoo thiab Thickness
Qhov sib txawv ntawm cov txheej thickness ntau dua thiab qhov zoo dua, qhov zoo dua nws cov nyhuv thaiv thiab muaj zog dua nws cov tshuaj tiv thaiv corrosion.
Ib puag ncig tej yam kev mob
5.Dab tsi yog lub hom phiaj tsim qauv ntawm cov xim -coated steel rolls?
Xim -coated steel coils yog cov khoom siv hauv tsev thiab cov khoom siv zoo heev, tab sis lawv lub hom phiaj tseem ceeb tsim yog los tiv thaiv atmospheric corrosion (xws li nag, av noo, thiab hluav taws xob ultraviolet), tsis yog cov khoom siv tshuaj tiv thaiv tshwj xeeb. Cov xim zoo ib yam-coated steel coils yuav tsum tsis txhob siv nyob rau hauv ib puag ncig uas muaj kev pheej hmoo ntawm cov kua qaub thiab alkali corrosion, xws li cov nroj tsuag tshuaj, electroplating rhiav, thiab chaw soj nstuam. Thaum xaiv cov ntaub ntawv, nws yog ib qho tseem ceeb uas yuav tau sab laj nrog cov neeg tsim khoom raws li qhov tseeb ib puag ncig los xaiv cov txheej txheem txheej txheej uas tsim nyog.