Lub ntsiab
12Cr1Movg yog qhov siab - kub, chromium- molybdenum {steel hlau dav siv nyob rau hauv lub zog tiam thiab petrochemical kev lag luam thiab petrochemical. Lub "G" nyob rau hauv nws lub npe sawv rau "Boiler" (los ntawm Suav Txheem, zoo ib yam li "P" hauv qhov kev siv thoob ntiaj teb), qhia tias nws yog thawj zaug hauv high- cov siab boiler tshuab thiab cov hlab ntsha siab.
Nws cov yam ntxwv tseem ceeb yog nws cov zoo heevCrep Lub Zogthiaboxidation tsis kamThaum nce qhov kub siab (txog li ~ 580℃lossis 1076℃f), ua rau nws zoo tagnrho rau supertheater thiab kev thim rov qab cov leeg hauv cov nroj tsuag fais fab.
1. Tshuaj lom neeg sib xyaw (ib txwm% los ntawm qhov hnyav)
Qhov muaj pes tsawg leeg yog qhov tseeb tswj kom ua tiav cov neeg xav tau thiab siab - cua sov. Cov hauv qab no yog ua raws cov qauv hauv SuavGB 5310.
| Lub ntsiab | Cov ntsiab lus (%) | Sau ntawv |
|---|---|---|
| Carbon (c) | 0.08 - 0.15 | Muab zog. |
| Silicon (si) | 0.17 - 0.37 | Deagidizer thiab lub zog ua kom zoo nkauj. |
| Manganese (mn) | 0.40 - 0.70 | Txhim kho lub zog thiab cov tawv tawv. |
| Chromium (cr) | 0.90 - 1.20 | Yuam sij rau high - kub lub zog thiab oxidation / corrosion tsis kam. |
| Molybdenum (mo) | 0.25 - 0.35 | Txhim kho lub zog thiab creep tsis kam ntawm cov kub. |
| Vanadium (V) | 0.15 - 0.30 | Cov ntaub ntawv ruaj khov carbides, txhim kho kev ua lub zog. |
| Phosphorus (p) | Tsawg dua los yog sib npaug rau 0.025 | Impurity, tswj kom tiv thaiv emgrittlement. |
| Sulphur (s) | Tsawg dua los yog sib npaug rau 0.025 | Impurity, tswj tau tiv thaiv kom tsis txhob muaj kev ncua luv luv. |
| Npib tsib caug (ni) | Tsawg dua los yog sib npaug rau 0.25 | Residual keeb. |
| Tooj Liab (Cu) | Tsawg dua los yog sib npaug rau 0.20 | Residual keeb. |
2. Cov Cuab Yeej Siv Tshuab (rau GB 5310)
Cov khoom sib txawv sib txawv me ntsis raws li lub xeev kho cua sov (li qub & tempered) thiab cov yeeb nkab loj.
| Ntiag tug | Tus nqi |
|---|---|
| Lub zog tensile (RM) | Ntau dua los yog sib npaug rau 470 MPa (68,200 psi) |
| Yield zog (RP0.2) | Ntau dua los yog sib npaug rau 255 mpa (37,000 psi) |
| Elongation (a) | Ntau dua los yog sib npaug rau 21% |
| Kev Cuam Tshuam Lub Zog (AKV) | Ntau dua los yog sib npaug rau 35 J @ 20 degree |
Hardness:Feem ntau yog li ntawm 135 txog 180 HB.
3. Cov yam ntxwv tseem ceeb & Cov txiaj ntsig
Zoo heev Creep Zog:Qhov no yog nws cov khoom tseem ceeb tshaj plaws. Nws tuaj yeem tiv thaiv tsis muaj kev ntxhov siab ntau ntawm cov kub rau ncua sijhawm (piv txwv li 100,000 teev) yam tsis muaj kev deormation.
Zoo siab - kub oxidation tiv:Cov Ntsiab Lus Chromium Cov Ntsiab Lus Ib Txheej Oxide Txheej (Cr₂o₃) uas qeeb qeeb qeeb oxidation (scaling) ntawm qhov kub.
Zoo thermal stability:Lub microstructure tseem ruaj nyob hauv qab ntev -}} Todle raug rau kev kub siab, tiv thaiv emgrittlement.
Zoo weldability:Nws tuaj yeem muab welded siv cov txheej txheem tsim nyog thiab piv rau cov tub lim hlau (piv txwv li} b2} kub}} Weld cua sov kev kho (duab) feem ntau yuav tsum muaj.
4. Cov ntawv thov tseem ceeb
12Cr1MoVG pipes are almost exclusively used in high-temperature and high-pressure environments:
Fais fab nroj tsuag Boilers:
Soj Ntsuam Superheater
Ua Kev Txiav Txim Siab
Cov Kav Hauv Paus tseem ceeb
High - kub heer laer kav
Petrochemical Kev Lag Luam:
Tub Rog Tshav Kub Kub
Cov piping hauv cov khoom siv hluav taws xob thiab cov tshuaj lom neeg ua ke uas ua haujlwm ntawm qhov kub siab.
SiabTsim los rau high - kev pab kub.
5. Cov qauv thiab cov qhab nia sib npaug
12Cr1Movg feem ntau yog cov khoom siv suav nrog, tab sis nws tau nyob ze sib txig sib luag hauv lwm cov qauv thoob ntiaj teb.
| Lub hom phiaj | Teem nqi | Sib npaug / zoo ib yam |
|---|---|---|
| Tuam Tshoj / GB | 12Cr1Movg | Thawj qhov kev tsim qauv. |
| ISO / DIN | 13Crmo4-5 | Ib tug zoo nkauj nyob sab Europe sib npaug. |
| ASTM (USA) | A335 P12 | Ib qib zoo sib xws, tab sis tshuaj muaj tshuaj muaj qhov sib txawv me me. |
| En (Tebchaws Europe) | 16mo3 | Ib qho zoo sib xws Molybdenum hlau, tab sis nrog qis cr. |
| JIS (Nyiv) | Zaum 22 | Cov roj chromium zoo sib xws - molybdenum hlau. |
Nco tseg:Thaum cov qib kawm tau zoo sib xws, lawv tsis yog ib txwm hloov dua siab ncaj qha. Kev xaiv cov khoom yuav tsum yog raws cov qauv tsim tshwj xeeb thiab kev ua haujlwm ntawm txoj haujlwm.
6. Kev Tsim Kho Thiab Kev Kho Kub
Txheej txheem tsim khoom:Tsim litsis ntseLos ntawm cov txheej txheem xws li kub extrusion lossis teb thau teb, kom tsis txhob muaj kev sib tw weld, uas yog qhov muaj peev xwm tsis muaj zog nyob rau hauv siab siab.
Kev Kho Cua Sov:Cov kav dej tau muab rau hauvQub & Temperedmob.
Normalizing:Rhaub rau ~ 950 - 980℃thiab huab cua txias los kho cov qauv nplej.
Tempering:Rov ua kom tau ~ 720-750℃thiab txias kom ua tiav qhov kev xav tau ntawm lub zog thiab tawv.
Lub ntsiab
12Cr1Movg Seamless Steel Yeeb Nkabyog qhov tseem ceeb heev - kev ua haujlwm cov khoom rau lub zog hluav taws xob. Nws cov khoom sib xyaw ntawm chromium, molybdenum, thiab vanadium muab nws superior ntev- Lub zog ntawm qhov ntsuas pa hluav taws xob kom sai. Thaum koj pom daim ntawv tsim no, koj tuaj yeem lees paub nws yog npaj rau qee qhov kev xav tau tshaj plaws- kub luam kub kav hauv lub ntiaj teb.
