1.Dab tsi yog qhov "ductile-kub hloov pauv" ntawm cov hlau?
Saum toj no DBTT: Cov hlau yog ductile thiab undergoes yas deformation (elongation thiab dabtsi yog khoov) tsis tawg thaum cuam tshuam.
Hauv qab DBTT: Cov hlau yog nkig thiab tawg ncaj qha nrog me ntsis deformation thaum cuam tshuam.
2.Dab tsi yog cov tshuaj muaj pes tsawg leeg thiab hom substrate steel?
Ordinary low-carbon steel (xws li SPCC thiab DC01): Qhov no yog cov substrate feem ntau rau galvanizing. Nws ductile - mus rau - qhov hloov pauv kub yog qhov siab, kwv yees li -20℃txog -30℃. Qhov no txhais tau hais tias nws muaj kev pheej hmoo siab ntawm kev tawg tawg hauv qhov chaw txias heev hauv qab qhov kub no.
High-zoo qis- carbon steel / microalloyed steel: Los ntawm kev txo cov ntsiab lus ntawm cov teeb meem xws li carbon (C), phosphorus (P), thiab sulfur (S), thiab ntxiv microalloying ntsiab xws li niobium (Nb), vanadium (V), thiab titanium (Ti), ductile-rau- qhov hloov pauv kub ntawm cov hlau tuaj yeem txo qis dua. Galvanized coils ua los ntawm cov hlau no tuaj yeem tswj tau qhov hnyav ntawm qhov kub thiab txias li -40℃lossis txawm -50 degree.
Ultra-qis-kub steel (xws li nickel alloy steel): Ntxiv qee feem pua ntawm nickel (Ni) yog ib qho txiaj ntsig zoo tshaj plaws ntawm kev txhim kho steel qis-kub toughness. Nickel-muaj cov hlau tuaj yeem ua tiav cov ntaub ntawv zoo- mus rau- qhov hloov pauv hloov qis qis li -60℃lossis qis dua -100 degree, ua rau lawv feem ntau siv nyob rau hauv qhov chaw huab cua xws li liquefied natural gas (LNG) cia tanks.
3.Lub koom haum ntawm lub substrate steel yog dab tsi?
Kub-rolled baseplate: Nws qhov loj me me yog qhov ntxhib, ua rau cov khoom siv hluav taws xob ntau dua - qhov kub thiab txias hloov tsis zoo thiab qhov kub tsis zoo - tiv taus.
Txias-rolled baseplate: Tom qab txias dov thiab annealing, nws cov grain loj yog zoo thiab sib xws, ua rau ib tug qis dua ductile - brittle hloov kub thiab zoo dua low- kub toughness. Feem ntau cov galvanized coils siv txias -rolled baseplate.
4.Dab tsi cuam tshuam cov zinc txheej nws tus kheej?
Zinc yog inherently brittle nyob rau hauv chav tsev kub, tab sis nws toughness txo nyob rau hauv qis kub. Txawm li cas los xij, vim tias cov zinc txheej nyias nyias thiab ua tau zoo rau cov substrate, nws feem ntau tsis dhau los ua ib qho ntawm cov pob txha tawg tshwj tsis yog lub substrate nws tus kheej ua rau tawg tawg. Thaum cov kab nrib pleb zoo tuaj yeem tsim, lawv yuav tsis ua rau tag nrho daim ntawv tawg.
5.Qhov kev ceev faj yog dab tsi?
Txiav txim siab qhov ntsuas kub qis tshaj plaws uas koj cov khoom lossis cov qauv yuav raug, suav nrog cov xwm txheej xws li cua thiab cuam tshuam.
Tham nrog cov neeg muab khoom siv: Sib txuas lus rau koj qhov qis - qhov yuav tsum tau muaj qhov kub thiab txias ncaj qha rau cov chaw tsim khoom lossis cov chaw muag khoom. Lawv tuaj yeem pom zoo rau qib uas tsim nyog tshaj plaws raws li lawv cov qauv sab hauv thiab cov txheej txheem tsim khoom.
Tshawb xyuas cov ntaub ntawv pov thawj: Thaum yuav khoom, thov daim ntawv pov thawj cov khoom zoo los ntawm tus neeg muag khoom, uas feem ntau txheeb xyuas cov qib steel hauv paus thiab cov txiaj ntsig ntawm qhov kev xeem toughness (yog tias tsim nyog).