Puas yog tus nqi ntawm cov hmoov xeb los ntawm ASTM A588 kab hlau rhuav phab ntsa cuam tshuam rau lawv cov kev ua tau zoo?

 

Cov hmoov xeb xeb tsuas yog xoob ntawm cov hlau oxide tsim thaum lub sij hawm pib oxidation, thiab cov txheej txheem shedding tsis erode los yog puas steel matrix ntawm ASTM A588 panels. Qhov txias / kub dov- tsim cov khoom siv kho tshuab (lub zog, rigidity, cuam tshuam tsis kam) thiab kev ncaj ncees ntawm cov ntaub thaiv phab ntsa vaj huam sib luag tseem nyob ruaj khov, thiab tsis muaj qhov txo qis hauv load-cov kabmob, cua tsis kam lossis deformation tsis kam rau cov ntaub ntawv tsis- cov ntaub ntawv phab ntsa.

 

Rust hmoov shedding yog ibtsim nyog precursorRau kev tsim ntawm ASTM A588's tiv thaiv patina. Cov txheej oxide xoob tshem tawm kom nthuav tawm cov hlau tshiab, uas tom qab ntawd ua rau huab cua thiab noo noo los ua qhov ntom ntom, Cu / Cr / Ni- nplua nuj patina sib koom nrog cov matrix. Tus nqi ntawm cov hmoov xeb pov tseg tsuas yog qhia txog qhov nrawm ntawm qhov pib oxidation (txog rau ib puag ncig / kev kho saum npoo), tsis yog kev poob ntawm kev tiv thaiv - muaj peev xwm corrosion- ib zaug patina paub tab tsim, tus nqi corrosion ntawm A588 tseem nyob ntawm tus qauv qis (tsawg dua lossis sib npaug ntawm 0.01 mm / xyoo) tsis hais cov hmoov nplej.

 

ASTM A588's tsim 50+ xyoo kev pab cuam lub neej rau sab nraum zoov architectural daim ntaub ntawv yog txiav txim los ntawm lub ruaj khov tiv thaiv patina, tsis yog thawj nto oxidation khoom (xeb hmoov). Txawm tias nyob rau hauv siab -cov av noo / ntug dej hiav txwv ib puag ncig uas muaj xeb hmoov ntau dua, qhov kawg patina paub tab qhov ceev, ruaj khov thiab tiv thaiv cov nyhuv tsis cuam tshuam. Cov txheej txheem shedding tsis ua rau cov khoom poob uas cuam tshuam rau lub vaj huam sib luag thickness los yog ntev -lub sij hawm durability, thiab cov ntaub thaiv phab ntsa tuaj yeem tswj nws lub neej kev pab cuam raws li tsim.

 

Tsuas yog cov nyhuv ntawm xeb hmoov nyiaj yog nyob rauteeb meem pom kev thiab tu ib ntus, tsis yog lub vaj huam sib luag ua haujlwm tau zoo: ntau cov hmoov xeb tuaj yeem ua rau me ntsis staining ntawm cov khoom siv hauv tsev (iav, pob zeb, txhuas) thaum pib 3-12 lub hlis, thiab xav tau kev tu yooj yim lossis kev tiv thaiv ib ntus. Qhov no yog qhov teeb meem zoo nkauj ntawm qhov chaw uas tuaj yeem txo tau los ntawm kev kho huab cua ua ntej -kev kho huab cua, pob tshab sealer lossis kev tiv thaiv ib ntus, thiab ploj tag nrho thaum lub patina matures (tsis muaj xeb hmoov ntxiv).