Dab tsi yog cov khoom sib npaug rau SA387 Qib 22 Chav Kawm 1?
SA387 Qib 22 Chav Kawm 1
SA387 Qib 22 Chav Kawm 1 yog ib qho annealed 2.25Cr-1Mo alloy steel phaj tsim rau siab -kub siab cov hlab ntsha, muab nyob rau hauv ib tug softened mob los muab siab tshaj plaws ductility thiab formability rau complex fabrication ua ntej zaum kawg post-weld kev kho cua sov tsim nws cov kev pab cuam lub zog.
Qhov sib npaug thoob ntiaj teb ncaj qha rau SA387 Qib 22 Chav Kawm 1 yog cov khoom siv uas haum rau nws cov 2.25Cr-1Mo muaj pes tsawg leeg thiab yog npaj rau kev siv lub nkoj zoo sib xws. Txawm li cas los xij, tag nrho qhov sib npaug tsuas yog siv tau thaum cov khoom siv (annealed) thiab ntawv pov thawj (siab nkoj phaj txheem) tau lees paub.
| Standard / cheeb tsam | Kev Cai Sib Tw | Daim ntawv tseem ceeb ntawm qhov sib npaug |
|---|---|---|
| ASME(USA) | SA387 Qib 22 Chav Kawm 1 | Qhov yuav tsum tau code specification. Txhua qhov sib npaug yuav tsum tau ua raws li qhov no rau ASME stamp cov nkoj. |
| UNS(USA) | K21590 | Unified Numbering System identifier rau 2.25Cr-1Mo muaj pes tsawg leeg. |
| EN / DIN(Tebchaws Europe) | 10CrMo9-10 (1.7380) | Qhov ze tshaj plaws European siab lub nkoj hlau nyob rau hauv EN 10028-2. Nws yog qhov sib npaug ntawm kev ua haujlwm, tab sis nws cov lus teev tseg thiab cov khoom tsis zoo ib yam. Nws yog feem ntau siv rau hauv cov ntawv thov zoo sib xws. |
| GB(Tuam Tshoj) | 12Cr2Mo1R | Suav siab lub nkoj phaj txheem. Tus "R" txhais tau hais tias lub thawv / lub nkoj steel. Qhov no yog qhov sib npaug heev hauv cov haujlwm Asian. |
| Lub npe Alloy | 2¼Cr-1Molos yog2.25Cr-1Mo | Lub universal kev lag luam shorthand raws li nws nominal muaj pes tsawg leeg. |
Cov kev sib txawv tseem ceeb rau kev sib npaug zoo
1."Class 1" (Annealed) yog qhov tseem ceeb: Feem ntau cov ntawv xa mus rau "Qib 22" lossis "2.25Cr-1Mo" xav tias qhov normalized thiab tempered (Class 2) mob, uas yog qhov feem ntau. Koj yuav tsum qhia meej "Class 1" lossis "Annealed Condition" kom tau txais cov khoom raug, softer. Cov European 10CrMo9-10 feem ntau yog muab nyob rau hauv ib tug normalized thiab tempered los yog normalized mob, yog li ib tug annealed kub kho yuav tsum tau thov tshwj xeeb.
2.Material Standard txhais cov khoom: Ib qho sib npaug yuav tsum yog los ntawm cov txheej txheem ntawm lub nkoj siab, tsis yog cov qauv txheej txheem. Piv txwv li:
Qhov tseeb: EN 10028-2 (Cov khoom lag luam tiaj tus rau lub hom phiaj siab).
Tsis yog Direct Equivalent: Ib qho bar lossis forging tus qauv nrog cov chemistry zoo sib xws (xws li AISI 422, A182 F22). Cov no muaj cov khoom sib txawv thiab cov txheej txheem tsim khoom.
3.Lub luag haujlwm ntawm Daim Ntawv Pov Thawj: Rau ASME Code siab lub nkoj, lub phaj yuav tsum tau ntawv pov thawj raws li lub rooj sib tham SA387. Lub rooj sib tham phaj tsuas yog 10CrMo9-10 lossis 12Cr2Mo1R yuav xav tau kev kuaj ntxiv thiab pov thawj los ntawm cov chaw tsim khoom kom raug lees paub raws li SA387 sib npaug raws li ASME Code Case lossis tus neeg siv khoom Cov Khoom Siv Khoom Siv Daim Ntawv Pov Thawj.
Summary of Recommended Approach
Rau kev yuav khoom thiab engineering:
1.Cov Khoom Siv Tseem Ceeb: SA387 Qib 22 Chav Kawm 1 (Annealed).
2.Common Txais Hloov (yog tias pom zoo): EN 10028-2: 10CrMo9-10 muab nyob rau hauv annealed (+A) mob.
3.Common Acceptable Substitute (Asia-focused): GB 713: 12Cr2Mo1R muab nyob rau hauv annealed mob.
Nco ntsoov xyuas kom meej tias qhov sib npaug ntawm qhov kev kho cua sov, cov khoom siv kho tshuab ntawm chav tsev thiab qhov kub siab, thiab cov ntawv pov thawj ua tau raws li cov qauv tsim tshwj xeeb ntawm koj qhov project. Txoj cai kawg rau qhov sib npaug hauv kev ua haujlwm code yog nyob ntawm qhov project tus neeg ua haujlwm lub luag haujlwm thiab Tus Kws Tshuaj Xyuas Tso Cai.
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 lub nkoj kev pab cuam, nrog rau cov muaj pes tsawg leeg ntawm 2.25% Cr thiab 1% Mo los tiv thaiv oxidation thiab hydrogen nres 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 ntau hardening, 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 rau cov ntawv tshaj tawm zeb xeem (MTRs) muab cov khoom siv tshuaj thiab cov khoom siv ib puag ncig EN 10204 3.1 lossis 3.2.
SA387 Qib 22 Chav Kawm 1 piv rau Qib 11 lossis Qib 5 li cas?
Muab piv rau qib qis dua -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.
