Dab tsi ntawm cov yeeb nkab steel yog ASTM A500 Class B?
ASTM A500 Class B steel yeeb nkabyog ib qho txias - tsim cov pa roj carbon steel structural yeeb nkab siv rau kev siv cov qauv siv dav dav. Nws muaj nyob rau hauv ob qho tib si welded thiab seamless daim ntawv, thiab nyob rau hauv ntau yam duab, xws li puag ncig, square, thiab rectangular.
Dab tsi yog "dub" txhais li cas hauv ASTM A500 Class B dub corrosion-cov kav hlau tsis muaj zog?
Hauv "ASTM A500 Class B dub corrosion{1}}cov kav hlau tsis muaj zog," "dub"hais txog qhov xwm txheej ntawm cov yeeb nkab steel, tshwj xeeb tshaj yog cov hlau oxide tsaus txheej tsim thaum lub sijhawm tsim khoom. Qhov "dub oxide" no tshwm sim thaum kub dov lossis kev kho cua sov. Nws tsis tau txhais hais tias cov hlau nws tus kheej yog xim dub, tab sis lub steel nto muaj qhov tshwj xeeb nto txheej yam tsis muaj txheej txheem txheej txheem.
Yuav ua li cas ASTM A500 Class B dub corrosion-resistant steel yeeb nkab ua tiav nws "corrosion resistance"?
Lub corrosion kuj ntawmASTM A500 Class B dub corrosion{1}}cov kav hlau tsis muaj zoglos ntawm cov txheej txheem dub oxide tiv thaiv ntawm nws qhov chaw. Cov txheej txheej ntuj no yog tsim thaum cov hlau raug kub thiab oxygen thaum lub sijhawm tsim khoom.
Nyob rau hauv lub tsev twg yog ASTM A500 Class B dub corrosion-resistant steel yeeb nkab feem ntau siv?
ASTM A500 Class B dub corrosion{1}}cov kav hlau tsis muaj zogfeem ntau yog siv nyob rau hauv load- bearing daim ntaub ntawv nyob rau hauv lub tsev, xws li high-nce tsev thav duab, ru tsev, thiab kab; cov tsev lag luam; cov chaw ua kis las; thiab chaw ntau pob. Nws kuj yog siv nyob rau hauv cov kev cuam tshuam infrastructure.
Yuav ua li cas yog tias yuav tsum muaj kev tiv thaiv corrosion ntau dua?
Txhawm rau ua kom muaj kev tiv thaiv corrosion ntau dua, cov ntaub ntawv qib siab tuaj yeem raug txiav txim siab, xws li titanium, npib tsib xee alloys, lossis tshwj xeeb stainless hlau, lossis siab -cov txheej txheem kev ua tau zoo thiab cov txheej txheem kho saum npoo tuaj yeem ua haujlwm. Qhov kev xaiv tshwj xeeb nyob ntawm qhov chaw corrosive; Qee zaum kev sib xyaw ua ke ntawm qib siab - qib hlau substrate nrog lub siab - txheej txheej yog qhov zoo tshaj plaws.
