1. Cov ntsiab lus txhais thiab Alloy Tsim
12Cr2MoWVTiB is a multi-component composite-strengthened boiler tube specified in the GB 5310 standard. Nws yog lub martensitic tshav kub-} tiv taus hlau. Nws cov nomenclature thiab cov yam ntxwv muaj feem muaj raws li hauv qab no:
"12": Carbon Cov Ntsiab Lus 0.08 - 0.15% (cov pa roj hmab nruj tswj tsim);
"Cr2": chromium cov ntsiab lus 1.50- 2.00% (high-kub oxidation tsis kam);
"Mow": Molybdenum 0.50-0.70% + Tungsten 0.30-0.55% (cov tshuaj muaj zog zog);
"VTib": Vanadium 0.25-0.35% + titanium 0.08-0.15% + boron 0.005-0.010% (grain duas muaj zog zuj zus);
Cov kev tshwj xeeb: phosphorus tsawg dua lossis sib luag rau 0.020%, leej faj tsawg dua lossis sib npaug nrog 0.020℃kev ua kom cov ntaub ntawv tam sim no.
2. Cov kev ua tau zoo thiab zoo
Ultra - high -} Kev ua haujlwm ntev: tuaj yeem ua haujlwm ntev ntawm 620-650℃(tsim lub neej 100,000 teev);
Nkag los: lub sijhawm los tsoo ntau dua lossis sib npaug rau 40,000 teev ntawm 620℃/ 100 mpa;
Microstration tsim:
Cov yam ntxwv ua:
Vuam yuav tsum tau preheating ntawm 350 {- 400 degree, tom qab los ntawm post-weld tempering ntawm 760-780 degree;
Txias ua haujlwm yuav tsum muaj intermediate annealing (HB tsawg dua los yog sib npaug rau 220).
3. Cov ntawv thov raug
Ultra -} Scritical Balers: Thaum kawg SuperHeater (phab ntsa kub tshaj lossis sib npaug nrog 600 degree);
Nuclear Fais Fab Lub Tshuab: Txuas Txuas Rau Chav Generator hauv tiam IV reactors;
Cov Kev Siv Tshwj Xeeb:
Kev sib hloov cua sov hauv siab nyob rau hauv high -}} sulfur fluue gas ib puag ncig;
Siab - Cov kabmob sib xyaw ua ke hauv cov koog nrog cov pib nquag- Ups thiab kaw.
4. Sib Piv nrog cov ntaub ntawv zoo sib xws
vs . 12 cr2mog:
Tungsten - titanium {{1} boron componite Qhov Cuab lub zog: 30% siab dua siab} kub lub zog;
Qhov kub tshaj plaws ua haujlwm kub nce ntxiv los ntawm 50 degree;
Raug nqi kwv yees li 40-50% siab dua. vs. T92 (9CR-2W):
Cov ntsiab lus Chromium ntau dua, muaj zog ncu hluav taws xob tsis kam;
Zoo heev thermal fermal rog kev ua tau zoo (ΔT> 300 degree).
5. Kev Ua Lag Luam thiab Kuaj Cov Ntsiab Lus Tseem Ceeb
Cov Ntawv Pov Thawj Tseem Ceeb: Yuav tsum muaj kev kuaj rau Delta Ferrite cov ntsiab lus (tsawg dua los yog sib npaug rau 3%) thiab grain loj (ntau dua lossis sib luag rau qib 6);
Yuav tsum tau xeem:
100% ultrasonic + eddy tam sim no sib xyaw ua ke kom pom;
Hardness Gradient Testing (hla-}}}}}}}} section hardht nyuaj sib txawv tsawg dua los yog sib npaug rau 30 hb);
