SA213 T92 seamless steel yeeb nkab yog siab -kawg alloy steel yeeb nkab raws li tus qauv ASME A213, belongs rau 9Cr-1Mo-V-Nb-W martensitic tshav kub{11}}resistant steel. Nrog rau qhov zoo heev - kub lub zog, nkag mus, thiab corrosion kuj, nws tau dhau los ua cov khoom tseem ceeb rau supercritical thiab ultra supercritical fais fab nroj tsuag boilers, thiab kuj yog siv nyob rau hauv siab - kub thiab high-pressure scenarios xws li petrochemicals.
1. Cov yam ntxwv tseem ceeb thiab muaj txiaj ntsig zoo:Cov qauv tsim: Raws li 9% chromium (Cr) thiab 1.8% tungsten (W), ntxiv nrog cov kab hlau rhuav tshem xws li molybdenum (Mo), vanadium (V), niobium (Nb), thiab ib nrab txhim kho boron (B) ntxiv rau refine grain ciam teb thiab txhim kho siab - kub stability. Piv nrog rau cov tsoos T91 steel, T92 nce qhov kev cia siab ntawm 600℃los ntawm li 30% thiab nce siab - kub lub zog los ntawm 20% los ntawm kev nce cov ntsiab lus tungsten thiab txo cov molybdenum piv. Microstructure: Tempered martensite qauv yog tsim tom qab normalizing + tempering kho. MX hom carbonitride (carbonitride ntawm V thiab Nb) yog sib npaug ntawm cov martensite Flat noodles ciam teb, zoo pinning dislocation, ncua grain ciam zawv zawg ntawm qhov kub thiab txias, thiab txhim kho creep resistance.
Performance indicators, AsChav tsev kub tensile zog Ntau dua los yog sib npaug rau 620MPa, yield zog Ntau dua los yog sib npaug rau 440MPa, elongation Ntau dua los yog sib npaug li 20%; Lub zog tawg yog ntau dua los yog sib npaug rau 90MPa tom qab 100000 teev ntawm 650 degree, thiab qhov hardness tswj ntawm 190-250HB. Kev loj hlob ntawm oxide txheej yog qeeb thaum siv mus ntev. Tom qab ua haujlwm rau 50000 teev nyob rau hauv qhov ntsuas qhov ntsuas ntawm 605 degree, qhov hardness tsuas yog txo los ntawm 2HRC
2.Production process and quality control manufacturing process: Siv hluav taws xob arc rauv smelting + sab nrauv refining (LF + VD) los tswj cov impurities, lub raj yog ua rau hauv capillary los ntawm kev sib hloov perforation, kub extruded ntawm 1180 degree, thiab tom qab ntawd raug rau normalizing (1040-1080 degree) + tempering (730 degree) kev kho kom zoo tshaj plaws. Cov kev lag luam hauv tsev xws li Baosteel thiab Panzhihua Hlau thiab Hlau tau ua tiav cov txheej txheem hauv zos, nrog cov khoom siv phab ntsa thickness kam rau ua tswj nyob rau hauv ± 5% thiab ovality Tsawg dua los yog sib npaug rau 0.6%. Cov kev cai vuam: Nws yog ib qho tsim nyog yuav tsum ua raws li ASME BPVC IX specification. Nws raug nquahu kom siv ER90S-B9 welding hlau nrog 80% Ar{15}}% CO ₂ shielding gas, thiab cov khoom siv hluav taws xob raug txwv rau 15-25kJ / cm. Tom qab vuam, nws yog ib qho tsim nyog yuav tsum tau txais 300℃× 2h dehydrogenation kho thiab 750-780℃tag nrho tempering kom tsis txhob muaj kev pheej hmoo ntawm hom IV tawg.
3.Core daim ntawv thov thaj chaw hauv kev lag luam fais fab:Cov khoom tseem ceeb xws li superheaters, reheaters, thiab cov kav dej tseem ceeb ntawm supercritical (SC) thiab ultra supercritical (USC) fais fab cog boilers, uas tuaj yeem tiv taus qhov kub thiab txias ntawm 600-650℃thiab siab siab tshaj 25MPa rau lub sijhawm ntev. Piv txwv li, tom qab siv T92 rau cov kav dej tseem ceeb ntawm 1000MW chav tsev hauv Huaneng Yuhuan Fais Fab Kev Cog Lus, qhov nyuaj ntawm tsuas yog 7HB tom qab 8 xyoo ntawm kev ua haujlwm ruaj ntseg. Hauv kev lag luam petrochemical, kev kub siab thiab kev kub siab cov tshuaj tiv thaiv cov kav dej, cov kav dej tawg thiab lwm yam xwm txheej, qhov kev tiv thaiv rau HCl corrosion tau nce ntau dua 3 zaug tom qab kev kho aluminium infiltration. Cov xwm txheej tshwm sim: khib nyiab hluav taws xob tsim hluav taws xob, 700℃qib siab supercritical chav ua qauv ua qauv qhia, cov yeeb nkab sib xyaw ua ke tsim los ntawm npib tsib xee raws alloy, haum rau kev ua haujlwm nruj dua
4.Market Status thiab Development Trends Supply and Demand Scale:Qhov kev thov txhua xyoo hauv tsev yuav tsum tshaj 80000 tons los ntawm 2025 (nrog rau kev tsim hluav taws xob chaw nres tsheb suav txog 75%), thiab lub ntiaj teb kev lag luam loj yog kwv yees li 150000 tons, nrog kev loj hlob txhua xyoo ntawm 8%. Cov neeg xa khoom tseem ceeb hauv tsev yog Baosteel, Panzhihua Hlau thiab Hlau, thiab Tianjin Steel Yeeb Nkab. Sumitomo Hlau los ntawm Nyiv thiab Valourek los ntawm lub teb chaws Yelemees tuav qee qhov kev ua lag luam siab - kawg. Nqe thiab Tus Nqi: Cov nqe lus hais txog kev lag luam hauv tsev yog li 50000 txog 80000 yuan / tuj, uas yog 30% siab dua P91 steel, tab sis tag nrho cov nqi ntawm lub neej (xws li lifespan thiab tu) yog qhov zoo dua. Kev hloov kho thev naus laus zis: Los ntawm microalloying (ntxiv Co thiab Cu) thiab tswj cov txheej txheem dov thiab txias, kev ua haujlwm kub tuaj yeem nce mus txog 650 degree; Kev sib xyaw ntawm nano oxide dispersion strengthening (ODS) thev naus laus zis thiab T92 qhia tau hais tias lub zog tuaj yeem txhim kho ntxiv los ntawm 25% ntawm 650℃raws li cov ntaub ntawv kuaj.
Technical Parameters
|
Element |
Cov ntsiab lus ntau |
Element |
Cov ntsiab lus ntau |
|---|---|---|---|
|
C |
0.07–0.13 |
Cr |
8.50–9.50 |
|
Mn |
0.30–0.60 |
Mo |
0.30–0.60 |
|
Si |
Tsawg dua los yog sib npaug li 0.50 |
W |
1.50–2.00 |
|
V |
0.15–0.25 |
Nb |
0.04–0.09 |
|
N |
0.03–0.07 |
B |
0.001–0.006 |
|
P |
Tsawg dua lossis sib npaug li 0.020 |
S |
Tsawg dua lossis sib npaug li 0.010 |
|
Ni |
Tsawg dua lossis sib npaug li 0.40 |
Al |
Tsawg dua lossis sib npaug li 0.040 |
|
Performance Index |
Txheem tus nqi |
|---|---|
|
Tensile zog |
Ntau dua lossis sib npaug li 585 MPa |
|
Yield zog |
Ntau dua lossis sib npaug li 415 MPa |
|
Elongation |
Ntau dua lossis sib npaug li 20% |
|
Max Hardness |
Tsawg dua lossis sib npaug li 250 HB |
High -Tsub kub cev lub cev:
|
Kub |
Elastic Modulus (GPa) |
Thermal Expansion Coefficient (10⁻⁶ / degree) |
Thaum tshav kub kub tshwj xeeb (J / kg·K) |
|---|---|---|---|
|
20 degree |
191 |
- |
420 |
|
100 degree |
184 |
11.4 |
430 |
|
300 degree |
173 |
12.1 |
480 |
|
500 degree |
152 |
12.9 |
580 |
|
600 degree |
98 |
13.1 |
630 |
Cov ntawv thov tseem ceeb
SA213 T92 seamless steel kav yog dav siv nyob rau hauv siab - kub thiab siab - siab industrial teb nrog nruj kev nyab xeeb yuav tsum tau:
- Ultra-supercritical & supercritical thermal fais fab nroj tsuag boiler superheaters, reheaters thiab chav pipeline systems
- Petrochemical siab -kub tshuaj tiv thaiv hlab ntsha, tshav kub exchangers thiab siab -pressure fluid xa pipelines
- Muaj lub cub hluav taws kub -kub flue kav, chaw nres tsheb fais fab cov khoom siv cua sov
- Siab -kub kub siab pipeline tej yaam num hauv metallurgy, lub zog thiab lwm yam kev lag luam hnyav
FAQ
Q1: Dab tsi yog qhov txawv ntawm SA213 T92 thiab T91 seamless kav?
T92 steel ntxiv tungsten thiab optimized boron alloying ntsiab nyob rau hauv lub hauv paus ntawm T91, uas ho txhim kho siab - kub creep kuj thiab thermal stability. T91 yog qhov tsim nyog rau kev ua haujlwm kub hauv qab 580 degree, thaum T92 tuaj yeem ua haujlwm ruaj khov ntawm 600-620 degree, nrog 30% ntev dua -lub neej kev pab cuam nyob rau hauv ultra-qhov kub thiab txias, thiab yog qhov tsim nyog rau ultra-supercritical zog tsim khoom.
Q2: Dab tsi yog txheej txheem kev kho cua sov yog siv rau T92 kav?
Peb txais cov qauv kev kho cua sov ntawm 1040-1080 degree, nrog lub sijhawm tuav los ntawm 2 feeb ib millimeter ntawm phab ntsa thickness (tsawg kawg 20 feeb), ua raws li kev kho mob tempering. Cov txheej txheem no tshem tawm cov kev ntxhov siab sab hauv, kho cov qauv nplej, zam kev loj hlob txawv txav, thiab ua kom cov khoom ruaj khov thiab siab - qhov kub thiab txias ntawm cov yeeb nkab.
Q3: Cov ntawv pov thawj twg tuaj yeem muab tau?
Peb tuaj yeem muab cov ntaub ntawv soj ntsuam tag nrho ntawm lub Hoobkas, suav nrog cov ntaub ntawv txheeb xyuas tshuaj lom neeg, daim ntawv qhia txog kev ntsuas cov cuab yeej, ultrasonic tsis -cov ntaub ntawv kuaj kev puas tsuaj, daim ntawv tshaj tawm kev soj ntsuam qhov ntev, thiab ASME / ASTM tus qauv ntawv pov thawj. Thib peb-kev tshuaj ntsuam xyuas tog (SGS, BV) tau txais raws li cov neeg siv khoom xav tau.
Q4: Puas tuaj yeem hloov kho qhov ntau thiab tsawg?
Yog lawm. Peb txhawb customized sab nraud txoj kab uas hla, phab ntsa thickness thiab tsau -ntev txiav. Lub caij no, peb muab cov kev pabcuam sib sib zog nqus xws li cov yeeb nkab kawg beveling, threading, dabtsi yog khoov, tiv thaiv -kev kho xeb thiab polishing nto kom tau raws li kev xav tau ntawm ntau yam engineering.
Q5: Lub sijhawm xa khoom thiab ntim khoom yog dab tsi?
Qhov ntau thiab tsawg yog nyob rau hauv Tshuag nrog 3-7 hnub xa khoom sai; customized loj yuav siv sij hawm 10-15 hnub ua hauj lwm. Cov khoom lag luam tau ntim nrog cov yeeb yaj kiab tsis muaj dej tsis muaj dej + lub hnab ntim khoom + lub thawv ntoo (rau me me - txoj kab uas hla cov kav dej) los tiv thaiv xeb, kev sib tsoo thiab deformation thaum lub sijhawm ntev - kev thauj mus los deb, txhawb nqa hiav txwv thiab huab cua.
Q6: Cov kev ua haujlwm zoo li cas yog T92 kav dej haum rau?
Nws yog tshwj xeeb uas tsim los rau siab - kub thiab siab - siab ua hauj lwm ib puag ncig, muaj feem xyuam rau ntev - lub sij hawm ua hauj lwm nyob rau hauv chav kub kub 580℃-600℃thiab hlau kub 600℃-620℃. Nws muaj kev tiv thaiv zoo rau siab -kub oxidation, thermal qaug zog thiab creep deformation, yoog mus rau huab cua ua haujlwm ntawm ultra-supercritical power units .
Q7: Puas yog SA213 T92 sib npaug rau lwm cov qib steel thoob ntiaj teb?
SA213 T92 sib raug rau UNS K92460, thiab sib tw EN 10216-2 tus qauv specification. Nws yog sib npaug rau SA335 P92 qib nyob rau hauv cov yeeb nkab daim ntawv thov scenarios, thiab yog ib tug universal siab -kawg tshav kub-resistant alloy steel qib nyob rau hauv lub ntiaj teb no hwj chim thiab petrochemical industries.
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