ASTM A387 Qib 5 Chav Kawm 2yog chromium-molybdenum alloy steel phaj tau teev tseg rau kev siv lub nkoj siab. Nws muaj lub zog zoo thiab nkag siab tsis kam ntawm qhov kub siab. Cov khoom siv feem ntau yog normalized thiab tempered kom ua tau raws li qhov xav tau ntawm cov khoom siv kho tshuab, ua kom muaj kev ntseeg siab nyob rau hauv siab - qhov kub thiab txias qhov chaw.
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A387 Gr.5 CL.2Tshuaj muaj pes tsawg leeg |
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Qib |
Cov ntsiab lus Max (%) |
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C |
Si |
Mn |
P |
S |
Cr |
Mo |
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A387 Gr.5 Cl.1 |
0.15 |
0.55 |
0.25-0.66 |
0.035 |
0.035 |
3.90-6.10 |
0.40-0.70 |
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Qib |
A387 Gr.5 CL.2Mechanical Property |
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Thickness |
Yield |
Tensile |
Elongation |
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A387 Gr.5 Cl.2 |
mm |
Min Mpa |
Mpa |
Tsawg% |
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t Tsawg dua lossis sib npaug li 50 |
310 |
515-690 |
18 |
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50<> |
- |
- |
- |
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ua
1. Melting thiab Casting
Melting: Ua los ntawm Electric Arc Furnaces (EAF) lossis Basic Oxygen Furnaces (BOF).
Refining: Feem ntau siv lub tshuab nqus tsev degassing kom tshem tawm cov impurities thiab gases (hydrogen/nitrogen), ua kom lub cev huv si.
Chemistry: Precisely alloyed nrog 4.00-6.00% Chromium thiab 0.45-0.65% Molybdenum.
2. Kub Rolling
Steel slabs yog rhuab mus rau kwv yees li 1,700℃F (926 degree) thiab dhau los ntawm ntau lub chais kom ua tiav cov phaj tuab kawg, feem ntau yog li ntawm 6mm txog 300mm.
3. Kev kho cua sov (tseem ceeb rau chav kawm 2)
Chav Kawm 2 xav tau kev kho cua sov tshwj xeeb kom ua tiav lub zog tensile siab dua (75-100 ksi) piv rau Chav Kawm 1.
Normalizing: Ua kom sov siab tshaj qhov ntsuas kub tseem ceeb kom ua kom zoo dua cov qauv nplej, ua raws li cua txias.
Tempering: Reheated rau qhov tsawg kawg nkaus ntawm 1,300℃F (705 degree) kom ua tau raws li qhov xav tau ductility thiab lub zog sib npaug.
Lwm txoj kev: Thaum tso cai, ua kom txias txias (kua quenching) los ntawm austenitizing kub raws li tempering yuav siv tau.
4. Fabrication (Machining & Forming)
Txiav: Cov phaj raug txiav kom loj siv cov nplaim, ntshav, lossis laser txiav.
Kev Tsim: Mechanical shaping lossis drilling yog ua raws li kev tsim cov nkoj tshwj xeeb.
Vuam: Tsim los rau siab weldability; Txawm li cas los xij, Post-Weld Heat Treatment (PWHT) feem ntau yuav tsum tau los daws kev ntxhov siab thiab tiv thaiv kev tawg ntawm thaj chaw vuam.
5. Kev tshuaj xyuas thiab kev sim
Txhawm rau txheeb xyuas kev ua raws li ASTM / ASME cov qauv, cov kev sim hauv qab no tau ua:
Mechanical: Tensile tests thiab Charpy V-Ntch impact tests.
Tsis yog-Kev puas tsuaj: Ultrasonic Examination (UT) thiab Magnetic Particle Examination kom pom qhov tsis xws luag sab hauv lossis saum npoo.
Daim ntawv pov thawj: Txhua lub phaj feem ntau yog muab daim ntawv pov thawj Mill Test (MTC).
qhov zoo
1. Exceptional High -Tsub Ua Haujlwm
Thermal Stability: Nws tuav nws cov neeg kho tshuab kev ncaj ncees thiab cov qauv tsim ntawm qhov kub siab txog 1000℃F (538 degree).
Creep Resistance: Cov ntsiab lus molybdenum ua rau nws ua haujlwm kom qeeb deformation (creep) nyob rau hauv siab - kev nyuaj siab, siab - cua sov.
2. Superior Corrosion thiab Oxidation Resistance
Tshuaj Tiv Thaiv: Cov ntsiab lus chromium siab (4.00-6.00%) muab kev tiv thaiv zoo tiv thaiv oxidation thiab ntau hom kev xeb, nrog rau pitting thiab crevice cracking.
Sour Service Suitability: Nws muaj txiaj ntsig zoo nyob rau hauv ib puag ncig uas muaj hydrogen sulfide (kev pabcuam qaub), ua rau nws xaiv rau cov roj thiab roj refineries.
3. Lub zog siv tshuab siab (Class 2 Advantage)
Lub zog tensile ntau dua: Chav Kawm 2 muab lub zog siab dua (75-100 ksi) dua li Chav Kawm 1, tso cai rau kev tsim cov khoom sib dua, sib zog uas tseem tuaj yeem tiv taus siab.
Impact Toughness: Nws dhau qhov kev sim nruj kom ntseeg tau tias muaj zog thiab tsis kam ua kom tawg tawg, txawm tias nyob rau hauv ib puag ncig nyuaj.
4. Cov yam ntxwv ntawm Fabrication zoo heev
Weldability: Nws yog tshwj xeeb tsim los ua weldable, tso cai rau kev tsim kho ntawm cov hlab ntsha nyuaj thiab cov boilers yam tsis muaj kev cuam tshuam cov alloy cov khoom siv tshuab.
Formability: Txawm hais tias nws lub zog siab, cov hlau tuaj yeem tsim ua ntau yam duab thiab ntau thiab tsawg uas yuav tsum tau muaj rau cov khoom siv tshwj xeeb.
5. Economy Efficiency
Durability thiab Longevity: Nws tsis kam mus rau qhov hnyav ib puag ncig ua rau lub neej ntev dua rau cov khoom siv, txo qhov zaus ntawm kev saib xyuas thiab kev hloov pauv.
Tus nqi-Kev ua tau zoo: Piv rau cov nqi kim dua -alloy lwm txoj kev, nws muab ib qho kev sib npaug, siab -kev ua tau zoo uas ua tau raws li kev siv nyiaj txiag nruj.
Cov Ntawv Thov Kev Lag Luam tseem ceeb
Petrochemical Kev Lag Luam:Fabrication ntawm siab - cov hlab ntsha siab, cov khoom siv hluav taws xob, cov khoom sib cais, thiab cov tank cia.
Roj Refining:Kev tsim kho cov yees, cov catalytic cracking units, thiab hydrogenation units.
Kev tsim hluav taws xob:Siv nyob rau hauv industrial boilers thiab pressurized khoom tsim los rau siab kub kev pab cuam.
Natural Gas & Fertilizer Production:Kev tsim cov roj tso tsheb hlau luam, cov kav xa hluav taws xob, cov khoom siv ammonia synthesis, thiab urea synthesis towers.
Cov cuab yeej tshwj xeeb:kev tsim cov reactors, cov khoom siv rauv, thiab cov kav dej.
Thov kom muaj kev tshaj lij rau A387 Qib 5 Chav Kawm 2 los ntawm GNEE Steel.
Puas yog ASTM A387 Qib 5 Chav Kawm 2 haum rau vuam?
Yog lawm, ASTM A387 Qib 5 Chav Kawm 2 yog suav tias yog yooj yim weldable siv cov txheej txheem vuam. Preheating thiab post-weld heat treatment yog pom zoo kom tiv thaiv hydrogen-induced cracking thiab xyuas kom meej cov khoom uas xav tau nyob rau hauv lub tshav kub- cuam tshuam cheeb tsam.
ASTM A387 Qib 5 Qib 2 piv rau ASTM A387 Qib 91 li cas?
ASTM A387 Qib 5 Qib 2 muaj chromium thiab molybdenum qis dua qib 91, siab -lub zog ferritic alloy steel. Qib 91 muab kev nkag siab zoo heev ntawm qhov kub thiab txias, thaum Qib 5 Chav Kawm 2 yog qhov tsim nyog rau kev nce siab hauv nruab nrab - qhov kub siab ntawm cov hlab ntsha.
Dab tsi yog qhov ntsuas kub ua ntej tau pom zoo rau vuam ASTM A387 Qib 5 Chav Kawm 2?
Preheating kub rau ASTM A387 Qib 5 Chav Kawm 2 feem ntau yog li ntawm 200℃F mus rau 300℃F. Qhov no yuav pab txo qis qhov txias ntawm qhov vuam thiab cua sov- thaj tsam cuam tshuam, txo qhov kev pheej hmoo ntawm kev tawg thiab ua kom lub suab vuam zoo.
Dab tsi yog qhov txawv ntawm ASTM A387 Qib 5 Chav Kawm 1 thiab Chav Kawm 2?
Qhov sib txawv tseem ceeb yog nyob rau hauv lawv cov qib zog thiab kev kho cua sov. Chav Kawm 2 muaj lub zog ntau dua thiab feem ntau xav tau kev kho cua sov ntau dua kom ua tiav cov khoom xav tau. Chav Kawm 1 feem ntau yog siv rau hauv cov ntawv thov tsawg dua, thaum Chav Kawm 2 yog qhov nyiam rau siab dua -siab lossis siab dua- qhov kev pabcuam kub.
ASTM A387 Qib 5 Qib 2 piv rau ASTM A387 Qib 9 li cas?
ASTM A387 Qib 5 Chav Kawm 2 muaj cov ntsiab lus chromium qis dua qib 9, ua rau qis qis dua - qhov kub thiab txias tsis kam. Qib 9, nrog cov chromium siab dua, yog qhov zoo dua rau kev nce siab ntau dua - qhov kub thiab txias, thaum Qib 5 Chav Kawm 2 yog siv nyob rau hauv nruab nrab siab - qhov kub siab ntawm cov hlab ntsha.
Dab tsi ncej-weld kev kho cua sov yuav tsum tau rau ASTM A387 Qib 5 Chav Kawm 2?
Tom qab-weld kev kho cua sov rau ASTM A387 Qib 5 Chav Kawm 2 feem ntau cuam tshuam nrog qhov kub thiab txias ntawm 1100℃F thiab 1200℃F. Qhov no txo qis qhov seem seem, txhim kho toughness, thiab kho cov khoom siv kho tshuab tom qab vuam.
Dab tsi yog qhov txawv ntawm ASTM A387 Qib 5 Chav Kawm 2 thiab ASTM A516 Qib 70?
ASTM A387 Qib 5 Chav Kawm 2 yog chromium-molybdenum alloy steel tsim los rau siab- kev pabcuam kub, thaum ASTM A516 Qib 70 yog carbon steel rau qis rau nruab nrab kub siab cov hlab ntsha. Qib 5 Chav Kawm 2 muaj kev nkag siab zoo dua, thaum Qib 70 muab qhov zoo ntawm qhov kub thiab txias.
ASTM A387 Qib 5 Chav Kawm 2 piv rau ASTM A285 Qib C li cas?
ASTM A387 Qib 5 Chav Kawm 2 yog cov hlau alloy nrog chromium thiab molybdenum, muab cov qib siab tshaj - qhov kub thiab txias piv rau ASTM A285 Qib C, carbon hlau. Qib 5 Chav Kawm 2 yog siv nyob rau hauv qhov xav tau ntau dua thermal ib puag ncig, thaum Qib C yog qhov tsim nyog rau qis dua -kub siab ntawm cov hlab ntsha.
Dab tsi yog qhov txawv ntawm ASTM A387 Qib 5 Chav Kawm 2 thiab ASME SA387 Qib 5 Chav Kawm 2?
ASTM A387 Qib 5 Chav Kawm 2 thiab ASME SA387 Qib 5 Chav Kawm 2 yog cov khoom siv tib yam. SA387 yog ASME tsim los ntawm ASTM A387 rau kev siv boiler thiab cov hlab ntsha siab, kom ua raws li ASME cov qauv rau kev tsim kho thiab ntawv pov thawj.
ASTM A387 Qib 5 Chav Kawm 2 piv rau ASTM A387 Qib 11 Chav Kawm 2 li cas?
ASTM A387 Qib 5 Chav Kawm 2 muaj cov ntsiab lus chromium thiab molybdenum qis dua qib 11 Chav Kawm 2, uas ua rau qis qis qis dua - qhov kub thiab txias tsis kam. Qib 11 Chav Kawm 2 yog qhov zoo dua rau kev siv siab dua -kub thiab siab dua - kev siv siab, thaum Qib 5 Chav Kawm 2 yog siv rau cov mob hnyav me ntsis.
Dab tsi yog qhov txawv ntawm ASTM A387 Qib 5 Chav Kawm 2 thiab ASTM A387 Qib 22?
ASTM A387 Qib 5 Chav Kawm 2 muaj cov ntsiab lus qis dua piv rau Qib 22, uas muaj cov chromium thiab molybdenum ntau dua. Qib 22 muaj lub zog nkag siab zoo dua thiab siv rau hauv qhov hnyav dua siab dua - qhov kub thiab txias, thaum Qib 5 Chav Kawm 2 yog siv hauv cov kev pabcuam thermal tsawg dua.
Dab tsi yog qhov txawv ntawm ASTM A387 Qib 5 Chav Kawm 2 thiab ASTM A36 steel?
ASTM A387 Qib 5 Chav Kawm 2 yog ib qho tshwj xeeb alloy hlau rau siab -kub siab cov hlab ntsha, thaum ASTM A36 yog ib qho dav - lub hom phiaj carbon steel. Qib 5 Chav Kawm 2 muaj qhov ua kom sov zoo dua thiab muaj zog nkag, qhov A36 yog siv rau hauv cov qauv siv ntawm qhov kub thiab txias.