SA387 Qib 22 Chav Kawm 1 feem ntau siv nyob qhov twg?
SA387 Qib 22 Chav Kawm 1feem ntau yog siv rau hauv kev tsim kho ntawm cov hlab ntsha tseem ceeb thiab cov khoom siv uas ua haujlwm nyob rau hauv qhov kub thiab txias, siab siab, thiab corrosive lossis hydrogen- ib puag ncig nplua nuj, feem ntau nyob rau hauv lub zog thiab petrochemical sectors. Nws qhov tshwj xeeb annealed (softened) mob ua rau nws qhov kev xaiv zoo tshaj plaws thaum kev tsim cov khoom tsim thiab kev tsim hnyav yuav tsum tau ua thaum tsim khoom.
1. Petroleum Refining & Petrochemical Kev Lag Luam (Feem ntau Daim Ntawv Thov)
Qhov no yog lub lag luam tseem ceeb rau Qib 22 Chav Kawm 1 vim nws txoj kev ua haujlwm zoo heev rau High-Tub kub Hydrogen Attack (HTHA).
Hydroprocessing units:
Hydrocracker Reactors & Separators: Daim ntawv thov tseem ceeb. Cov hlab ntsha no ua cov roj hnyav nyob rau hauv siab hydrogen siab (txog 3,000 psi) thiab kub (700℃F-850℃F / 370℃-450 degree). Qib 22's 2.25Cr-1Mo muaj pes tsawg leeg yog tsim tshwj xeeb los tiv thaiv hydrogen embrittlement thiab decarburization.
Hydrotreater Reactors: Rau desulfurization thiab denitrification.
Catalytic Reforming Units: Reactors thiab kub exchangers.
High-Tsuas Kub, Siab-Hloov (HTHP) Thaum tshav kub kub Exchangers: Hloov cov cua sov ntawm cov txheej txheem ntws hauv kev pabcuam hnyav.
2. Kev tsim hluav taws xob (Fossil & Nuclear)
Fossil Roj Nroj Tsuag: Siab- cov khoom siv boiler siab, lub tshuab nqus tsev, thiab lub taub hau uas ua haujlwm ntawm cov cua kub superheated.
Nuclear Fais fab nroj tsuag: Qee lub hauv paus thiab theem nrab system Cheebtsam yuav tsum muaj kev ncaj ncees thiab hluav taws xob tiv thaiv.
3. Kev ua tshuaj lom neeg
Siab -Pressure Reactors rau cov txheej txheem synthesis (piv txwv li, ammonia, methanol).
Cov Vev Xaib Siab raug rau cov tshuaj lom neeg nruj heev ntawm qhov kub siab.
Vim li cas thiaj xaiv CLASS 1 Tshwj xeeb? Fabrication Driver
Nyob rau hauv cov ntawv thov no, engineers qhia Class 1 (Annealed) tshaj qhov muaj zog Class 2 (Normalized & Tempered) rau tej fabrication.qhov zoo:
| Hom Lub Npe | Vim Li Cas Xaiv Chav Kawm 1 (Annealed) |
|---|---|
| Heavy, Dished & Hemispherical taub hau | Qhov zoo tshaj plaws ductility tso cai rau qhov txias txias los yog kub ua rau hauv cov duab nyuaj (xws li, lub taub hau reactor) tsis muaj tawg. |
| Thick{0}}Walled Plhaub nrog Tight Radii | Yooj yim rau yob thiab khoov thaum lub cylindrical plhaub fabrication. |
| Complex, Integral Cheebtsam | Zoo dua haum rau hnyav machining thiab tsim cov nozzles, flanges, thiab lwm yam txuas los ntawm cov khoom siv phaj. |
| Lub nkoj nrog Extensive Vuam & Kho | Lub softer, ntau uniform annealed qauv yuav zam tau ntau dua thaum lub sij hawm kho cov txheej txheem weld. |
Kev Lag Luam Kev Lag Luam -tawm: Tus tsim lub nkoj lees txais qis dua li - xa lub zog hauv kev sib pauv kom yooj yim dua, muaj kev nyab xeeb ntawm kev tsim cov khoom nyuaj. Qhov kawg lub zog thiab creep tsis kam yog tom qab ntawd ua tiav los ntawm qhov yuav tsum tau ua Post-Weld Heat Treatment (PWHT) ntawm lub nkoj ua tiav, nqa cov khoom siv hauv chav kawm 1 raws li qhov yuav tsum tau ua.
Cov txheej txheem xaiv cov khoom tseem ceeb rau cov ntawv thov no:
Qhov kub thiab txias:Qhov zoo tshaj plaws rau kev kub ceev ntawm ~ 500 ° F txog 1050 ° F (260 ° txog 565 ° F).
Ib puag ncig:Qhov tseem ceeb rau kev pabcuam hydrogen ib nrab siab raws li API RP 941 (Nelson Curve) cov lus qhia.
Siab:Siv rau kev tsim siab -siab, qhov twg nws lub zog tom qab PWHT tso cai rau tuab - seem ntim.
Hauv cov ntsiab lus
koj yuav pom SA387 Qib 22 Chav Kawm 1 daim hlau nyob rau hauv qhov tseem ceeb tshaj plaws, tuab - cov phab ntsa reactors thiab exchangers nyob rau hauv cov roj refinery los yog ib tug chemical nroj tsuag, tshwj xeeb tshaj yog nyob rau hauv lub cheeb tsam cov duab yog complex heev los ntawm cov harder Class 2 cov ntaub ntawv. Nws yog "chaw tsim khoom-tus phooj ywg" version ntawm siab -kev ua tau zoo 2.25Cr-1Mo alloy.
SA387 Qib 22 Chav Kawm 1 yog dab tsi?
SA387 Qib 22 Chav Kawm 1 yog ib qho annealed chromium-molybdenum alloy steel phaj tsim los rau siab- kub siab kev pab cuam lub nkoj, nrog ib tug muaj pes tsawg leeg ntawm 2.25% Cr thiab 1% Mo los tiv thaiv oxidation thiab hydrogen nres nyob rau hauv refinery thiab fais fab nroj tsuag daim ntaub ntawv.
Dab tsi yog cov yam ntxwv ntawm SA387 Qib 22 Chav Kawm 1?
Nyob rau hauv nws cov mob annealed, SA387 Qib 22 Chav Kawm 1 feem ntau muaj lub zog tensile ntawm 415-585 MPa (60-85 ksi), qhov tsawg kawg nkaus tawm lub zog ntawm 205 MPa (30 ksi), thiab siab ductility, ua rau nws tsim nyog rau kev tsim hnyav ua ntej kev kho cua sov kawg.
SA387 Qib 22 Chav Kawm 1 feem ntau siv nyob qhov twg?
Nws yog dav siv nyob rau hauv hydroprocessing reactors, hydrocrackers, tshav kub exchangers, thiab siab -kub siab hlab ntsha nyob rau hauv petrochemical thiab fais fab kev lag luam, tshwj xeeb tshaj yog qhov yuav tsum tau tiv thaiv hydrogen nres thiab creep.
SA387 Qib 22 Chav Kawm 1 txawv li cas ntawm Chav Kawm 2?
Chav Kawm 1 yog nkag rau hauv lub xeev annealed kom zoo formability, thaum Class 2 normalized thiab tempered rau siab dua li - xa lub zog. Chav kawm 1 raug xaiv thaum xav tau kev tsim khoom ua ntej ua ntej PWHT zaum kawg.
Post-weld heat treatment (PWHT) yog dab tsi rau SA387 Qib 22 Chav Kawm 1?
PWHT yog qhov yuav tsum tau ua thiab feem ntau ua tiav ntawm 1250-1300℃F (675-705 degree) txhawm rau txo cov kev ntxhov siab ntawm vuam, tiv thaiv hydrogen-induced cracking, thiab rov qab corrosion kuj nyob rau hauv qhov vuam cheeb tsam rau high-temperature kev pab cuam.
Dab tsi yog cov khoom sib npaug rau SA387 Qib 22 Chav Kawm 1?
Cov khoom sib npaug muaj xws li UNS K21590, European 10CrMo9-10 (1.7380), thiab generic designation 2.25Cr-1Mo steel. Txawm li cas los xij, qhov sib npaug sib npaug yog nyob ntawm kev kho cua sov thiab cov ntawv pov thawj uas yuav tsum tau ua.
SA387 Qib 22 Chav Kawm 1 puas tuaj yeem siv rau hauv kev pabcuam hydrogen?
Yog lawm, nws 2.25% chromium thiab 1% molybdenum cov ntsiab lus muab kev tiv thaiv zoo rau siab -kub hydrogen nres (HTHA), ua rau nws xaiv tus qauv rau hydrogen ua units hauv refineries.
Dab tsi yog cov txheej txheem tsim thiab machining rau SA387 Qib 22 Chav Kawm 1?
Vim nws qhov kev mob annealed, nws muaj qhov zoo txias formability tab sis yuav tsum tau preheating rau kub sib sau thiab tswj machining kom tsis txhob ua hauj lwm hnyav heev, nrog rau cov cuab yeej haum rau alloy steels.
Cov qauv dab tsi tau lees paub SA387 Qib 22 Chav Kawm 1 daim hlau?
Cov phaj tau ntawv pov thawj rau ASME SA387 / SA387M thiab ASTM A387 / A387M cov qauv, nrog cov ntawv tshaj tawm zeb xeem (MTRs) muab cov khoom siv tshuaj lom neeg thiab khoom siv rau EN 10204 3.1 lossis 3.2.
SA387 Qib 22 Chav Kawm 1 piv rau Qib 11 lossis Qib 5 li cas?
Piv rau qib qis -alloy qib zoo li Qib 11 (1.25Cr-}0.5Mo) lossis Qib 5 (5Cr-0.5Mo), Qib 22 muaj qhov zoo tshaj qhov kub thiab txias zog thiab hydrogen tsis kam, tab sis yuav tsum tau nruj dua vuam thiab kev kho cua sov tswj.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
