Khoom Profile
ASTM A335 GR. P9 yog ib tug seamless ferritic alloy steel yeeb nkab tsim rauCov kev pabcuam txuas ntxiv ntawm qhov kub thiab txias thiab siabCov. Nrog txog9% chromium thiab 1% molybdenum, Nws zaum hauv 9C-1MO tsev neeg uas tau siv dav hauv lub hwj chim, Pethychemical cua sov, cov khoos phis tawj, thiab cov txheej txheem kub.
NtawmLub Paj Tij Pos Octal, P9 kav yog muab rauQub thiab tempered mob, tag nrho sim, thiab traceable rau cua sov / batch, haum rau cov kav dej, chav kub}} {} {}
Khoom siv hauv paus thiab metallurgy
Tsis zoo li cov pa roj carbon hlau, P9 yog tsim kom tau lub zog thiab kev ntseeg sab nraud tom qabNtau txhiab teevntawm cov ntsuas kub siab.
- Chromium (~ 9%)Ua ib qho kev cog lus, adherentCriao-filmNyob rau saum npoo, qeeb nplai thiab oxidation nyob rau hauv kub chav los yog sib xyaw - roj cua cua.
- Molybdenum (~ 1%)Ntxiv dag zog rau Ferrititalic matrix thiab ncua kev nkag dag los ntawm kev tshem tawm cov zog.
- Tom qabnormalizing + tempering, cov hlau qhia atempered ferrite-carbide qauvNrog cov ciaj ciam av thiab tswj cov carbides nyob ruaj khov (feem ntau M₂₃c₆ / M₆C) raws li cov neeg muaj zog thiab tsis txhob muaj qoob loo muaj zog thiab tsis txhob muaj qoob loo tawg thaum lub sijhawm ntev ntev.
Yog li, nyob rau hauv high - kub kev pab (superheater coils (kho cov nyiaj hloov pauv qis dua li p5 / P11-hom alloys.
Tshuaj & Neeg Kho Mob Yuav Tsum
Tshuaj lom neeg tshuaj tua kab (cov khoom raug)
| Lub ntsiab | Cov ntsiab lus,% | Lub luag hauj lwm |
|---|---|---|
| Chromium (cr) | 8.0 – 10.0 | Oxidation / scaling tsis kam, siab - temp ruaj khov |
| Molybdenum (mo) | 0.90 – 1.10 | Creep thiab tawg lub zog |
| Carbon (c) | Tsawg dua los yog sib npaug rau 0.15 | Hloov kho hardness thiab tensile |
| Manganese (mn) | 0.30 – 0.60 | Kub Ua Haujlwm |
| Silicon (si) | Tsawg dua los yog sib npaug rau 1.00 | Txhawbxidation Kuj |
| Phosphorus (p), leej faj (s) | Tsawg dua los yog sib npaug rau 0.025 | Khaws cov qauv thiab tawv |
Cov Khoom Siv Neeg Kho Tshuab (ASTM A335 P9)
- Lub zog tensile:Ntau dua los yog sib npaug rau 415 MPa
- Paib lub zog:Ntau dua los yog sib npaug rau 205 MPa
- Elongation:Ntau dua los yog sib npaug rau 30%
- Hardness:Tsawg dua los yog sib npaug rau 163 hbw
Cov txiaj ntsig no yog rau qhov qub -}}}} temper temper thiab yog npaj los muab cov npoo txaus rau kev tsim khoom kub thiab kub thiab txias.
Kev Tsim Kho Kev Lag Luam & Kev Kho Tshav Kub
Txhawm rau kom muaj 9cr - 1mo chemistry.} Pa tsuag moture {} pa tsuag spects ib txoj kev sib xyaw ua ke
- Billet & Tho
Huv si (} mo bilhets yog rhuab mus rau qhov kom raug kub (nyob ib ncig ntawm 1100-1150 degree)
- Kub Rolling / Txias Teeb Duab
Phab ntsa tuab yog coj mus rau cov sijhawm txiav txim (SCH 10 - SCH 160). Nruab nrab ib txwm ua tej zaum yuav raug siv thaum txo qis lossis kaw kev thev taus yog koom nrog.
- Normalizing (kwv yees . 900} - 950 degree)
Ua kom tau cov neeg nplua nuj, yaj tsis yog - cov khaub ncaws hnav zoo nkauj, tshem tawm sab hauv kev ntxhov siab los ntawm kev sib sau.
- Tempering (kwv yees . 675} - 760 degree)
Restores ductiles thiab locks nyob rau hauv lub ntiav carbide faib khoom thiaj li hais tias nkaus plupture cov khoom sib tw ua ke TTM xav tau.
- Kev Tswj Xyuas Zoo
- Ultrasonic / Eddy - tam sim no ndt ntawm cov yeeb nkab lub cev thiab xaus
- Hydrostatic Kev Ntsuam Xyuas
- Hardness thiab cov neeg kho mob ntsuas ib pob
- En 10204 3.1 / 3.2 Daim Ntawv Pov Thawj Rau Kev Ua Lag Luam
Qhov tshwm sim yog cov yeeb nkab nrog nplua, tusyees tembides thiab ib qho ruaj khov ferritic matrix {}}}} term muaj kev pabcuam kub.
Kev Tshaj Tawm Sab Nraum
| Chaw ua uas tsis tau haus | Raug |
|---|---|
| Sab nraud ntawm lub taub | ½ "- 24" (12.7 - 610 hli) |
| Phab Ntsa Thickness | SCH 10 - SCH 160 (INCRATE WT) |
| Qho ntev | Txog li 12 m, srl / drl / txiav - rau {2} ntev |
| Xaus | Beveled rau vuam, lossis tiaj |
| Kev thev | Od ± 1%, wt ± 10% (lossis raws li kev txiav txim) |
Qhov tshwj xeeb ntev thiab nruj tus nqi tuaj yeem sib tham txog rau cov dej num boiler / hrsg.
Siab - kev pab kub
Thaum hlau kub nce mus rau600-700 DEGREE, P9 khaws ob yam uas qis dua qib pib poob:
- Nto- Cr -} nplej rich oxide zaj duab xis slows slows, yog li cov raj foling thiab phab ntsa thinning yog qeeb qeeb.
- Nkag ruaj khov- Nrog mo nyob rau hauv kev daws teeb meem thiab cov carbides, cov alloy tuaj yeem ncav cuag cov qhov ua tau zoo ntawm qhov uas yuav tsum tau ua rau 1000 teev.
Yog vim li cas p9 yog ib txwm teev rau:
- Lub hwj huam nroj tsuag:SuperHeater thiab Rab Rabe Rabes, Chav Head, Kub Cov Kab Cub Kub Chav
- Lub tshuab hluav taws xob / petrochemical cua sov:Reformer Tube, Hloov Cov Kab, Kub - roj piping
- High - kub txheej txheem ntoo:Cov Hluav Taws Xob Tshav Kub Kub, Manifolds, Reactor Pub Cov Khaub Ncaws
- Roj & Roj Cov Chav Ua Hluav Taws Xob:Chav txhaj tshuaj, hydrogen - Ua cov kab ua haujlwm hauv qab kub thiab kos kauj vab
Piv nrog P5 / P11, P9 muabZoo oxidation tswj thiab qeeb me microstration coarsening, uas feem ntau txhais lus kom kuaj tau ntev dua.
Octal Yeeb Nkab Khoom & Ntaub Ntawv
- Ntau lawm rauASTM A335 / ASME SA-335thiab cuam tshuam iso / en xav tau
- Kev xa tawm hauvQub thiab Temperedyam tseem ceeb
- Mechanical, ndt, hydrostaticKev xeem ntawv rau txhua pob
- 3.1 / 3.2 daim ntawv pov thawjyuav tau
- Cov ntim haum rau kev xa tawm thiab ntev - deb tsheb thauj
- Project -} Qhab QA / QC txhawb nqa rau lub zog, chaw ua haujlwm ntxiv thiab tshuaj lom neeg cog khoom
