Q1: Dab tsi yog qhov tseem ceeb cov khoom siv tshuaj lom neeg muaj cai rau 12cr1movg steel yeeb nkab?
Cov pa roj carbon cov ntsiab lus ntawm 12cr1movg steel yeeb nkab yog tswj hwm ntawm 0.08% thiab 0.15% kom ntseeg tau zoo weldability thiab siab-kub lub zog. Lub chromium (CR) cov ntsiab lus yog 1.00% rau 1.50%, muab cov oxidation thiab corrosion tsis kam. Lub Molybdenum (MO) cov ntsiab lus yog 0.25% rau 0.35%, txhim kho siab qhov siab-kub creep tsis kam. Vanadium (V) Cov ntsiab lus yog 0.15% rau 0.30%, ua kom cov noob nplej loj thiab txhim kho kev nruj. Phosphorus (p) thiab sulfur (cov sulfur (cov sulfur (s) txwv rau hauv qab 0.025% thiab 0.010%, feem ntau, kom txo brittleness. Cov yam ntxwv muaj pes tsawg leeg ua rau nws haum rau kev kub siab thiab cov khoom siv hluav taws xob siab, xws li cov roj fais fab thiab cov khoom siv petrochemical.
Q2: Cov khoom siv tshuab dab tsi ntawm 12cr1movg steel yeeb nkab? 12Cr1Movg steel yeeb muaj chav-kub tawm los ntawm ntau dua los yog sib npaug ntawm 440-640 MPa ntau dua los yog sib luag rau 19%. Thaum muaj kub kub (piv txwv li, 550 degree), nws lub zog endurental hard mus txog ntau dua lossis sib npaug rau 90 MPa (100,000-teev beepacture). Kev Cuam Tshuam Cov Khoom Siv Hluav Taws Xob yuav tsum muaj chav nyob kub uas cuam tshuam rau ntau dua lossis muaj sib npaug rau 31 J kom muaj kev nyab xeeb hauv qhov kev nyab xeeb tsawg. Hardness yog tswj hwm HB Tsawg dua lossis sib npaug rau 170, ntsuas lub zog thiab cov txheej txheem. Cov khoom no ua rau nws cov ntaub ntawv zoo tshaj plaws rau kev kub kub, cov khoom siv siab-cov kabmob.
Q3: Dab tsi yog qhov sib txawv ntawm 12cr1movg thiab 15crmog cov kav dej steel?
12Cr1Movg muaj cov ntsiab lus chromium qis dua (1.00% -1.50% dua li ntawm 550%, tab sis 12Cr1Movg muaj zog nkag Kuj . 12} cr1movg yog 5% -10% kim dua 15crmog vim nws tus nqi siab dua. Nyob rau hauv cov nqe lus ntawm daim ntawv thov, 12Cr1Movg feem ntau siv nyob rau hauv supercritical boilers, thaum muaj 15crmog yog siv nyob rau hauv cov khoom siv subcritical.
Q4: Cov khoom kub npaum li cas yog 12Cr1Movg steel yeeb tau haum rau?
Cov qauv tsim tawm qhov ntsuas kub ntau ntawm 12Cr1Movg yog -20℃rau +580 degree, thiab nws tuaj yeem tiv taus kub txog 600℃rau lub sijhawm luv luv. Nws lub zog nkag thiab oxidation tiv taus zoo heev nyob rau hauv 450℃mus 580℃ntau yam. Hauv kev muaj dej tsawg (xws li -20 degree), muaj kev cuam tshuam lub zog ntawm 31j lossis siab dua yuav tsum tau los tiv thaiv kev tawg. Qhov siab tshaj 600 degree, siab dua-qib P91 / P92 yog pom zoo. Thermal cov teeb meem qaug zog yuav tsum tau saib tshwj xeeb hauv kev ua haujlwm nrog cov kev hloov pauv ntau zaus.
Q5: What are the delivery conditions for 12Cr1MoVG steel pipe? 12Cr1MoVG steel pipes are typically delivered in the normalized (N) and tempered (T) condition, with normalizing temperatures ranging from 930°C to 960°C and tempering temperatures ranging from 680°C to 730°C. Thick-walled pipes (>30 hli) yuav xav tau quenching thiab tempering thiab quenching). Txias kev kos cov kav dej yuav tsum muaj kev ntxhov siab annealing (600℃rau 650 degree). Kev kho cua sov curves thiab cov khoom siv kho tshuab cov cuab yeej yuav tsum muaj thaum ua zaub mov xa tuaj. Cov ntawv thov tshwj xeeb yuav xav tau cov ntaub ntawv ntsuas kub ntxiv kom kub.
