Khoom Txheej txheem cej luam
ASTM A335 QIB P11 belongs rau lubTsawg Alloy Cr - mo steel tsev neeg (1-1.5% CR, 0.5% MO)engherered tshwj xeeb rau kev siv nyob rau hauvhigh - kub thiab high -}} lub tshuab siab siabCov .it sawv cev rau qhov sib npaug ntawm cov tshuab zog, oxidation tsis kam, thiab cov coility fab xws li cov kab tsheb super, thiab chav siab hloov chaw. Los ntawm kev sib tw metallurgical, tusFerritic-tempered Micrubtructurentawm P11 tshwj xeeb ib qho kev faib tawm nplua ntawm carbides (predominantly m₂₃c₆ thiab m₆c), uas ua rau nwsnkag reep - rupplate lub neej thiab seem ruaj khov.
Chromium txhawb nqa aNTIM OXIDE Nplai (Cr₂o₃)Tsim, tiv thaiv cov cim thiab oxidation txog 600℃(1110℃f), thaum Molybdenum ntxiv dag zog rau lub siab ferrite thiab slows disloter.
Ua ke, cov ntsiab feem ntau muab:
- Ntev - sij hawmcov quavnyob rau hauv pab tau load thiab ntsuas kub.
- Kev ruaj ntseg oxide ruaj nraus ua kom muaj kev tiv thaiv sab nrauv thiab kev coj tus cwj pwm.
- Zoo tshajhwj txwvThiab tsis tshua muaj kev phom sij rau embrittlement tom qab thermal cycling.
- Tswj cov roj carbon qib uas tswj kev nruj thiab tiv thaiv kev sib tsoo cov qoob loo coarsening.
Vim hais tias ntawm no metallurgical stability, astm A335 P11 tseem yog ib qho ntawm cov ntaub ntawv feem ntau rauTube Boiler, Superheaters, Thiab Txheej Txheem Pipingnyob rau hauv lub hwj chim tiam thiab kho kom dawb.
Tshuaj lom neeg thiab neeg kho tshuab
| Lub ntsiab | % Ntau | Lub Chaw Ua Haujlwm Tseem Ceeb |
|---|---|---|
| Carbon (c) | 0.05 – 0.15 | Ua kom muaj zog thiab creep tsis kam |
| Manganese (mn) | 0.30 – 0.60 | Txhim kho cov haujlwm kub thiab ductility |
| Silicon (si) | 0.50 – 1.00 | Txhim kho oxidation tsis kam |
| Phosphorus (p) | Tsawg dua los yog sib npaug rau 0.025 | Kev tswj hwm brittleness |
| Sulphur (s) | Tsawg dua los yog sib npaug rau 0.025 | Kev pab cuam luam ntawv |
| Chromium (cr) | 1.00 – 1.50 | Cov ntawv tiv thaiv oxide zaj duab xis |
| Molybdenum (mo) | 0.44 – 0.65 | Txhim kho siab - lub zog kub |
Neeg kho txhua yam
Tensile ntau dua los yog sib npaug rau 415 MPa • Tawm mus rau 205 MPa • Elongation ntau dua lossis muaj kev sib luag tsawg dua li 163 HBW
Kev Tsim Kho & Kev Kho Kub
ASTM A335 P11 Pipes yog tsim los ntawmSeamless kub extrusion lossis cold drawtion, xyov homogeneous microstructure thiab meej txoj kev tswjfensional.
Txhua kauj ruam ntawm kev tsim cov txheej txheem tsim khoom yog cov saib xyuas zoo kom tswj tau metallical sib xws thiab txo cov kev tsis taus sab hauv.
Ntau lawm & kev ua ntu zus
Cillet Cua Sov & Tho- AllOy bille yog rhuab rau 1100-1150℃thiab pierced siv cov kev cog lus teb los ua lub ntsej muag khoob nrog cov nplej zom.
Kub lossis txias tas- Cov kav dej yog dov lossis kos rau cov phab ntsa tuab kawg, ua raws li los ntawm huab cua txias lossis nruab nrab ib txwm muaj.
Normalization (940-980 Qib)- Caw cov nplej ferritic, Dissolves Subregated Carbides, thiab txhim kho kev ua kom muaj zog.
Tempering (675-755 degree)- Relieves sab hauv kev ntxhov siab, restores ductility, thiab stickilizes carbide morpide morpide rau cov creep kam.
Soj Ntsuam & Kev Kuaj- suav nrog ultrasonic lossis eddy - ndt tam sim no, hydrostatic siab ntsuas, kev ntsuas hardness, thiab kev ntsuas.
Qhov no ob - theem theem kev kho mob ua kom muaj anplua {{0} nplej ferrite - carbide matrixUas resistions purrittlement thiab tswj cov neeg kho tshuab muaj zog thaum lub sijhawm ntev {}} kev pab.
Rau Welded Tshuab, Post - Weld Kev Kho Tshav Kub (PWHT) kom ntseeg tauMicrostration Kev Kho Dua Tshiab thiab Hydrogen ntxhov siab nyem, tseem ceeb rau kev nyab xeeb siab - kev ua haujlwm kub.
Qhov ntau yam
| Chaw ua uas tsis tau haus | Cov Khoom Nquag Yog |
|---|---|
| Sab nraud ntawm lub taub | 12.7 - 610 hli (½ 24 hauv) |
| Phab Ntsa Thickness | 1.2 - 100 hli |
| Qho ntev | Txog li 12 m (srl / drl / txiav ntev) |
| Of thev | ± 1 % |
| Wht kam rau | ± 10 % |
| Ncaj | Tsawg dua los yog sib npaug rau 0.8 mm / m |
Muaj nyob rau hauvtiaj, beveled, lossis xov xausraws li kev teeb tsa cov cai.
High - kub} qhov kub thiab txias & cov ntawv thov
Ntawm kev ua haujlwm kub nce siab600 degree, Astm A335 P11 qhia txog qhov sib npaug tshwj xeeb ntawmOxidation Kuj, Thermal Stability, Thiab Mechanical Ceev.
Qhov tsim ntawm kev nruam cov chromium - rich oxide txheej thiab hlau poob thaum lub sij hawm ntev ntev, thaum Molybdenum ua rau muajCreep Lub Zog Ua Kom Tuav Thiab Kuj Mus Rau Microvoid Coalescence.
No txoj kev ua yeeb yam tshwj xeeb zoo nyob rau hauv ib puag ncig kev kawm rauthermal cycling, chav oxidation, thiab siab siab hloov, tswj ob qho tib si nruj thiab Weld Brightity.
Qhov Zoo
- Creep Zog Tuav Tseg:Txhim khu kev qha tensile thiab rupture tsis ntau tshaj ntau txhiab teev.
- Thermal rog tsis kam:Nplua {{0} nplej yog microstructure txo kev tawg los ntawm kev nthuav tawm- mjte} {mject}} kev cog lus mus.
- Tsawg thermal nthuav dav:Qhov seem tsis ruaj khov khaws cia weld sib ncag hauv cov tshuab raj loj.
- Nto Kev Tiv Thaiv:Ruaj xim oxide zaj duab xis ua kom muaj kev soj ntsuam thiab ncua kev kuaj ncua ntxiv.
Cov Ntawv Thov
- Lub zog tiam:Cov leeg Boiler, Cov Coils Super, heaveatre.
- Kev Ua Ntawv Teev Tseg & Petrochemical Nroj Tsuag:Txheej Txheem thiab Hloov Piping, Reformer Tube.
- Muaj cov txheej txheem txheej txheem:Chav manifolds thiab siab - h siab} siab cov tshuab ua siab.
- Siab Hlab:Rau ntev - tsis muaj kev pab kub thiab kev ntxhov siab cycling.
Soj ntsuam, ntawv pov thawj & khoom siv
Txhua P11 Pipes raug sim thiab ntawv pov thawj raws liASTM A335 / A999thiabASME SA335 Cov Qauv.
Txhua qhov kev xa khoom nrogCov Ntawv Pov Thawj Ua Lag Luam (En the610204 3.1 / 3.2), kom ua tiav cov cuab chim tag nrho thiab ua raws.
Kuaj cov qauv muaj xws li:
- Ultrasonic lossis hydrostatic soj ntsuam rau phab ntsa suab.
- Tensile, Hardness, Flattening, thiab khoov pov thawj dabtsi.
- Yeem radorography lossis cuam tshuam kev xeem raws li cov kev qhia tshwj xeeb.
Octal Yeeb muabQeb Qhab 50 QC, cov ntaub ntawv rauCov txheej txheem welding tsim nyog (WPS / PQR), thiab thoob ntiaj teb logistics kom ntseeg tau tias muaj kev xa khoom EPC thiab EPC thiab cov haujlwm thoob ntiaj teb.
