Lub ntsiab lus ntawm "Q" hauv P460Q cov khoom yog dab tsi?
HauvP460Q material (feem ntau pom raws li P460QH lossis P460QL), 'Q' txhais tau tias cov hlau yogQuenched thiab Tempered, txheej txheem kev kho cua sov kom zoo - nplej, siab - lub zog, weldable steels siv nyob rau hauv cov hlab ntsha siab, qhia txog kev txhim kho cov cuab yeej cuab tam, toughness, thiab qis - qhov kub thiab txias kev ua haujlwm. Lub 'P' qhia txog phaj, '460' yog qhov tsawg kawg nkaus tawm lub zog hauv MPa, thiab cov ntawv ntxiv xws li 'H' lossis 'L' qhia txog qhov ntsuas qhov ntsuas kub (xws li -20℃rau 'H', -40℃rau 'QL1').
P460Q yogAlloyed Micro{0}}Grained Steeluas ua tiav nws cov khoom siv kho tshuab los ntawm lub voj voog thermal ntawm quenching thiab tempering (Q + T). Cov txheej txheem no manipulates theem transformation ntawm cov hlau, feem ntau ua rau ib tug tempered martensite los yog bainite microstructure. Cov qauv no muab cov hlau nrog lub peev xwm tshwj xeeb los tswj cov hardness siab thaum tseem hloov tau txaus los tiv thaiv cov pob txha tawg ntawm qhov kub thiab txias.
Cov yam ntxwv tseem ceeb
Micro-Alloying:Muaj me me ntawmNiobium (Nb), Vanadium (V), thiab Titanium (Ti)uas ua raws li grain refiners.
Inclusion Control:Tus cwj pwm los ntawm qib qis heev ntawm Sulfur ($S \\le 0.010\\%$) thiab Phosphorus ($P \\le 0.020\\%$) kom ntseeg tau tias "huv" hlau.
Phase Stability:Lub tempering theem xyuas kom meej tias cov qauv martensitic ruaj khov, tiv thaiv cov khoom los ntawm nkig dhau.
Isotropic Properties:Qhov zoo -grained xwm xyuas kom meej tias txhua yam khoom zoo ib yam txawm hais tias cov kev taw qhia ntawm cov nplej (longitudinal vs. transverse).
Decoding lub npe
P:Denotes ua raws li covCov Lus Qhia Txog Cov Khoom Siv Siab (PED).
460:Mechanical pib rauElastic Deformation460 N / hli
Q:Metallurgical marker rau lubPhase Hloovtxoj kev (Quenching tom qab Tempering).
Kev sib piv
Vs. P460 NH:P460NH yog "Normalized." P460Q (Quenched thiab Tempered) feem ntau muaj lub zog muaj zog ntau dua thiab zoo dua qis - qhov kub thiab txias qhov tseem ceeb tshaj nws cov khoom sib xws.
Vs. ASTM A537 Chav Kawm 2:Qhov no yog qhov ze tshaj plaws Asmeskas sib npaug. Txawm hais tias zoo sib xws hauv lub zog, P460Q ua raws li European grain nruj dua - cov txheej txheem kho kom zoo.
Daim Ntawv Thov Kev Sib Tham
Cryogenic Separators:Siv rau hauv cov nroj tsuag ua cov pa roj uas muaj cov kua dej los ntawm kev kub siab thiab qis kub.
Nuclear Secondary Containment:Qhov tseem ceeb ntawm cov kav dej thiab cov hlab ntsha uas xav tau qhov siab tshaj plaws metallurgical ntseeg tau.
High -Stress Thaum tshav kub kub Exchangers:Qhov twg cov hlau yuav tsum nthuav dav thiab cog lus tsis tsim micro- tawg.
Dab tsi yog qhov siab tshaj plaws thickness muaj rau P460Q?
Cov txheej txheem ntau lawm rau P460Q feem ntau npog thicknesses txog 150mm .Txawm li cas los xij, cov mills tshwj xeeb tuaj yeem tsim cov phaj txog $ 250\\text{mm}$ rau qhov hnyav- engineering tej yaam num. Raws li cov thickness nce, cov kev xav tau ntawm lub zog yuav raug hloov kho raws li EN 10028-6 txhawm rau suav rau cov kev txwv lub cev ntawm kev tua cov ntu tuab tuab.
Dab tsi yog cov pa roj carbon txwv rau P460Q?
Cov ntsiab lus carbon hauv P460Q yog tswj hwm nruj thiab feem ntau capped ntawm 0.20%. Los ntawm kev txwv cov pa roj carbon, cov hlau tuav zoo heev weldability thiab ductility. Lub zog siab yog ua tiav los ntawm cov txheej txheem quenching thiab tempering thiab micro-alloying, ntau dua li cov pa roj carbon ntau uas yuav ua rau cov hlau nkig.
P460Q puas xav tau Post-Weld Heat Treatment (PWHT)?
PWHT feem ntau yuav tsum tau rau cov tuab -phab ntsa P460Q cov hlab ntsha los txo cov kev ntxhov siab uas seem ntawm vuam. Txawm li cas los xij, qhov kub ntawm PWHT yuav tsum tau ua tib zoo tswj kom nyob twj ywm hauv qab qhov kub ntawm qhov qub uas siv thaum lub sij hawm tsim khoom. Yog tias dhau lawm, cov hlau yuav poob nws cov txiaj ntsig siab, uas ua rau lub nkoj tsis zoo rau kev siv.
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P460Q tshuaj muaj pes tsawg leeg |
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Qib |
Cov ntsiab lus Max (%) |
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C |
Si |
Mn |
P |
S |
N |
B |
|
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P460Q |
0.18 |
0.50 |
1.70 |
0.025 |
0.015 |
0.015 |
0.005 |
|
Mo |
Cu |
Nb |
Ni |
Ti |
V |
Zr |
|
|
0.50 |
0.3 |
0.05 |
0.5 |
0.03 |
0.06 |
0.05 |
|
Carbon sib npaug: Ceq=【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
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Qib |
P460Q Mechanical Property |
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Thickness |
Yield |
Tensile |
Elongation |
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|
P460Q |
mm |
Min Mpa |
Mpa |
Tsawg% |
|
6-50 |
460 |
550-720 |
19% |
|
|
50-100 |
440 |
550-720 |
19% |
|
|
100-150 |
400 |
500-670 |
19% |
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1 Qhov txawv ntawm P460Q, P460QL1, thiab P460QL2 yog dab tsi?
Qhov sib txawv tseem ceeb yog qhov qis - qhov ntsuas kub ntawm qhov ntsuas kub. Thaum tag nrho peb sib koom tib lub zog tawm los, P460Q tau sim ntawm -20C}, P460QL1 ntawm -40C, thiab P460QL2 ntawm -60C}. Cov "L" variants qhia superior toughness rau cov cuab yeej ua hauj lwm nyob rau hauv kev loj hlob ntau heev, freezing ib puag ncig tej yam kev mob.
2Puas yuav tsum tau preheating ua ntej vuam P460Q?
Yog lawm, preheating yuav luag ib txwm xav tau thaum vuam P460Q, feem ntau yog li ntawm 100C txog 150C. Preheating slows tus nqi cua txias ntawm lub pas dej ua ke thiab cov cua sov nyob ib puag ncig- thaj chaw cuam tshuam, uas pab hydrogen dim thiab tiv thaiv kev tsim ntawm nkig theem uas tuaj yeem ua rau txias tawg tom qab vuam.
3 Dab tsi yog cov ntawv thov tseem ceeb ntawm P460Q?
P460Q feem ntau yog siv rau hauv siab - cov khoom siv muaj zog. Qhov no suav nrog cov neeg tuav cov pa roj kheej kheej (Horton Spheres), siab -siab chav boilers, refinery reactors, thiab hydroelectric penstocks. Nws lub zog siab ua rau nws zoo tagnrho rau cov nkoj uas nyob ruaj ruaj thiab thauj mus los uas tswj kev siab sab hauv thaum txo qhov hnyav tag nrho ntawm cov qauv yog qhov tseem ceeb.
4 Vim li cas phosphorus thiab Sulfur cov ntsiab lus khaws cia qis heev?
Phosphorus thiab Sulfur yog khaws cia nyob rau theem qis heev (0.020% thiab 0.010% feem) kom ntseeg tau tias cov hlau purity siab. Cov sulfur ntau dhau ua rau muaj kev sib koom ua ke uas ua rau nkig, thaum phosphorus ua rau muaj kev pheej hmoo ntawm qhov txias - luv. Cov qib qis ua kom cov hlau ductility thiab ua kom muaj zog zoo heev thaum tsim thiab vuam ua haujlwm.
5 Dab tsi yog Asmeskas sib npaug rau P460Q?
Qhov sib npaug ze tshaj plaws hauv Asmeskas yog ASTM A537 Chav Kawm 2 lossis ASME SA537 Chav Kawm 2. Cov no kuj tau quenched thiab tempered carbon-manganese-silicon steel daim hlau npaj rau fusion-welded siab hlab ntsha. Txawm hais tias cov qauv sib txawv me ntsis hauv kev txwv alloying thiab kev sim cov txheej txheem, lawv muab cov kev ua haujlwm zoo sib xws hauv kev siv high-siab engineering.
6Dab tsi yog qhov zoo tshaj plaws rau P460Q daim hlau?
Rau P460Q daim hlau, cov txheej txheem saum npoo feem ntau suav nrog cov txheej txheem zeb tiav los ntawm kev kub dov, nrog rau kev xaiv kev kho mob xws litxhaj tshuaj blasting, kua qaub ntxuav, los yog painting, raws li cov phaj no tau siv rau hauv cov hlab ntsha siab thiab siab - cov khoom siv kub, yog li kev npaj saum npoo tsom rau kev huv thiab tsim nyog rau kev tsim khoom, es tsis yog ultra- kev ua kom zoo.
7 Yam tsawg kawg nkaus lub zog yuav tsum muaj rau qib no?
Raws li EN 10028-6 tus qauv, P460Q yuav tsum ua kom muaj qhov cuam tshuam tsawg kawg nkaus ntawm lub zog ntawm 27J siv Charpy V-notch specimen. Qhov kev ntsuam xyuas no yog ua los ntawm qhov ntsuas kub -20C kom ntseeg tau tias cov khoom tuaj yeem tiv taus qhov poob siab tam sim ntawd yam tsis muaj kev tawg, uas yog qhov tseem ceeb rau kev nyab xeeb siab.
Yog xav paub ntxiv txogP460Q GNEE cov khoom, koj tuaj yeem xa email rau toinfo@gneesteels.com . Peb zoo siab tshaj los pab koj.
