Lub ntsiab
Todermog yog aSuav Txheem Chomium - molybdenum (cr - mo) Alloy Steelsiv tshwj xeeb rau high - kev pab kub. Lub "G" hauv nws cov qauv sawv ntsug rau "Gang" (钢), lub ntsiab lus "steel yeeb nkab rau high- Siab boilers." Nws yog txhais los ntawm Suav tus qauvGB 5310.
Cov hlau no yog cov haujlwm ua haujlwm thiab cov tsiaj txhu sib txuam nrog nws ua ke muaj zog, weldability, thiab nkag mus rau qhov kub thiab txias.
Lub npe rhuav tshem: 12Crmog
12: Kwv yees cov ntsiab lus carbonntau pua ntawm ib feem pua (0.08-0.15% C).
Cr: Qhia tias muaj ntawmYeebsab (~0.80-1.10%).
Mo: Qhia tias muaj ntawmMolybdenum (~0.45-0.60%).
G: Txhais tau tias nws siv rau qhov siab {{}}} siab cov hlab ("laib").
Cov qhab nia sib npaug hauv lwm cov qauv:
ASTM / ASME: A213 T2, A335 P2
DIN:13Crmo4-5
JIS:Zaum 22
Tshuaj lom neeg tshuaj lom neeg (raws li GB 5310)
| Lub ntsiab | Cov ntsiab lus (%) |
|---|---|
| Carbon (c) | 0.08 - 0.15 |
| Silicon (si) | 0.17 - 0.37 |
| Manganese (mn) | 0.40 - 0.70 |
| Chromium (cr) | 0.80 - 1.10 |
| Molybdenum (mo) | 0.45 - 0.60 |
| Phosphorus (p) | Tsawg dua los yog sib npaug rau 0.025 |
| Sulphur (s) | Tsawg dua los yog sib npaug rau 0.025 |
| Npib tsib caug (ni) | Tsawg dua los yog sib npaug rau 0.30 |
| Tooj Liab (Cu) | Tsawg dua los yog sib npaug rau 0.20 |
Cov yam ntxwv tseem ceeb & Cov txiaj ntsig zoo
Zoo heev - kub lub zog:Khaws nws cov tshuab zog ntawm cov kub feem ntau txog li 560℃(1040℃f). Qhov no tiv thaiv kev deformation thiab tsis ua tiav nyob rau hauv kev kub siab thiab tshav kub.
Zoo creep resistance:Creep yog qhov qeeb, deformation discormation ntawm cov ntaub ntawv nyob rau hauv kev ntxhov siab tas li ntawm qhov tshwm sim kub, uas yog qhov tseem ceeb rau cov khoom siv nrog ntev tsim.
Oxidation tsis kam:Cov ntsiab lus Chromium cov ntaub ntawv ruaj khov, txheej txheem tiv thaiv oxide ruaj khov (croo₃) nyob rau saum npoo, uas ua rau qeeb qeeb oxidation (scaling) hauv ib puag ncig.
Zoo Weldability thiab Formaty:Nws tuaj yeem tsim tau yooj yim welded siv tsim nyog ua ntej {{0} {} {}} {{1} {}}} {1} Nws haum rau fabricating cov pa luam yeeb.
Zoo thermal stability:Lub microstructure tseem ruaj ntseg ntev ntev ntawm lub sijhawm ntev ntawm cov kub, kom ua tau zoo sib xws.
Cov Cuab Yeej Siv Cov Neeg Kho Tshuab (tom qab siv cov dab tsi & tempering)
| Ntiag tug | Tus nqi |
|---|---|
| Lub zog tensile (RM) | Ntau dua los yog sib npaug rau 415 MPa (60,000 psi) |
| Yield zog (RP0.2) | Ntau dua los yog sib npaug rau 205 MPa (30,000 PSI) |
| Elongation (a) | Ntau dua los yog sib npaug rau 21% |
| Kev nyuaj | Tsawg dua los yog sib npaug rau 156 HB |
Cov Kev Siv Cov Ntawv Siv
12CLMO Seamless kav yog feem ntau siv nyob rau hauv cov ntawv thov tseem ceeb hauv qab no:
Siab - Siab Lub Siab Boiles Tubes:
Soj Ntsuam Superheater
Ua Kev Txiav Txim Siab
Evaporator Leeg
Cov Kav Hauv Paus tseem ceeb
Hab Fower Tsob Nroj Piping Tshuab:
Txuas cov kav dej rau boilers thiab turbines.
Petrochemical Kev Lag Luam:
Tub Rog Tshav Kub Kub
Cov piping hauv kev ua kom zoo nkauj thiab tshuaj chemical rau high - kub txheej txheem.
Siab Hlaws RaugRau siab - kev pab kub.
Cov txheej txheem tsim khoom
Raws li atsis ntseYeeb nkab, nws yog tsim khoom tsis muaj welded seam. Thawj cov txheej txheem suav nrog:
Kub Rolling:Cov khoom siv hlau hluav taws xob yog rhaub thiab tho los ntawm lub chaw kom tsim lub pob zeb khoob (Bloom), uas yog tom qab ntawd elongated thiab dov mus rau qhov yuav tsum tau loj.
Ciav Txias:Rau kev ua kom nruj me ntsis thiab qhov chaw ua si smoother ua tiav, kub}}} Rolled yeeb tuaj yeem ua ntxiv los ntawm kev txias txias los ntawm kev txias txias.
Cov kav dej yeej ib txwm muab rau hauvThaum tshav kub kub -} kho mob(li qub thiab tempered) kom ua tiav cov khoom siv yam xav tau thiab microstructure.
Cov kev txiav txim tseem ceeb rau kev siv
Kev Kho Cua Sov:Qhov tsim kho tshav kub kom zoo (normalizing & tempering) yog qhov tseem ceeb rau kev tsim cov khoom uas xav tau.
Vuam:Yuav tsum tau ceev faj cov txheej txheem:
Ua ntej - cua sovyog yuav tsum tau tiv thaiv kev tawg.
Kev siv sib txuam lossis sib piv cov hlau (piv txwv li, er80s- b2).
Post - Weld Kev Kho Tshav Kub (PWHT)Yuav luag txhua tus yuav tsum daws kev ntxhov siab thiab rov kho microstructure nyob rau hauv cov tshav kub {}}} bein cuam tshuam thaj chaw (Haz).
Txwv:Thaum zoo heev rau nws cov kev xav tau ntau, nws tsis haum rau ib puag ncig corrosive heev lossis rau cov cua sov uas muaj zog ntau yam zoo li muaj hnub nyoog muaj hnub nyoog muaj 12crmog, P91, lossis P92 yuav tsum muaj.
Lub ntsiab
Nyob rau hauv essence,12CLMOG Seamless Steel Yeeb NkabYog tus ntseeg tau thiab tus nqi -}} molybdenum {}} kub thiab siab {3} {} txoj kev pab siab. Nws qhov sib npaug ntawm lub zog, cov ntxig nkag, thiab kev ua haujlwm weldability ua rau cov haujlwm muaj kev nyab xeeb thiab muaj zog {5} {kub cov chaw ua haujlwm.
