Kev txiav txim siab tseem ceeb rau SA387 Qib 5 Chav Kawm 2 Kev Muag Khoom los ntawm Tuam Tshoj
SA387 Qib 5 Chav Kawm 2yog chrome-molybdenum alloy steel phaj (ASME SA387 / ASTM A387) tsim los rau siab -kub, siab- cov ntawv siv siab xws li boilers thiab cov hlab ntsha siab, muab lub zog zoo thiab corrosion kuj vim nws cov chromium (Cr) thiab molybdenum (Mo) cov ntsiab lus, nrog rau Chav Kawm 2 qhia txog lub zog tshwj xeeb. Nws yog cov hlau weldable, zoo tagnrho rau kev lag luam uas xav tau cov khoom siv zoo rau cov xwm txheej hnyav, nrog cov ntsiab lus tseem ceeb suav nrog ~ 4-6% Chromium thiab ~ 0.4-0.7% Molybdenum, ntxiv rau kev txwv nruj ntawm Carbon, Manganese, Phosphorus, thiab Sulfur.
Nyob rau hauv Suav teb, SA387 Qib 5 Chav Kawm 2 yog tsim los ntawm ib pab pawg neeg loj, siab heev steel mills nrog lub peev xwm los tsim high-alloy, tshav kub-kho siab hlab ntsha steels rau cov kev siv tseem ceeb.
1. Certification & Quality validation
ASME Daim Ntawv Pov Thawj:Paub meej tias lub zeb tuav tau ASME Tshooj II "S" daim ntawv tso cai pov thawj los tsim SA-387 khoom. Tsis yog txhua lub tuam txhab suav teb tau lees paub ASME rau qib tshwj xeeb no.
Kev xeem & Cov ntaub ntawv:Yuav tsum tau Daim Ntawv Qhia Tag Nrho Mill Test (MTRs) nrog cov lej ntsuas cua sov, thiab txheeb xyuas cov kev xeem ntxiv (piv txwv li, kev sim cuam tshuam, UT, HIC / SSC yog tias xav tau). Suav mills tuaj yeem ua raws li cov qauv GB (piv txwv li, 14Cr1MoR yog qib zoo sib xws), tab sis cov tshuaj lom neeg / tshuab muaj peev xwm txawv me ntsis ntawm ASTM.
Thib peb-Kev soj ntsuam tog:Siv cov neeg soj ntsuam thoob ntiaj teb lees paub (piv txwv li, SGS, BV, TÜV) los txheeb xyuas qhov zoo thiab kev sim ntawm lub zeb.
2. Cov ntsiab lus lag luam
Kev Ua Lag Luam Tseem Ceeb:Suav- tsim qib 5 Chav Kawm 2 feem ntau yog siv hauv cov haujlwm hauv tsev (refineries, thee chemical plant) lossis xa tawm mus rau tus nqi- cov lag luam tseem ceeb hauv Asia, Africa, lossis Middle East.
International Project Txais:Rau cov ntawv thov tseem ceeb hauv kev lag luam sab hnub poob (xws li EU, North America), cov ntaub ntawv los ntawm Suav mills tuaj yeem ntsib kev tshuaj xyuas ntxiv lossis xav tau kev pom zoo tshwj xeeb ntawm cov neeg siv khoom / engineering vim muaj keeb kwm sib txawv hauv qhov zoo sib xws.
Export txwv:Qee cov qib siab -qib alloy steels tej zaum yuav raug rau kev xa tawm los yog quotas.
3. Sib npaug Suav Standard
Qhov ze tshaj GB (Suav) sib npaug yog 14Cr1MoR, tsim los rau qhov zoo sib xws siab -kub hydrogen kev pabcuam. Txawm li cas los xij, nws tsis yog qhov tseeb tiag - tshuaj muaj pes tsawg leeg thiab kev kho cua sov yuav tsum txawv. Rau qhov tseeb SA387 Gr 5 Cl 2, lub zeb yuav tsum ua rau ASTM specification.
Cov lus pom zoo rau kev yuav khoom
Qhia meej meej:Hauv kev xaj xaj, qhia meej meej "SA387 Qib 5 Chav Kawm 2 rau ASTM / ASME SA-387" thiab sau tag nrho cov kev xeem uas xav tau (xws li Charpy cuam tshuam ntawm qhov kub thiab txias, UT, HIC).
Txheeb Xyuas Cov Ntawv Pov Thawj:Thov ua pov thawj ntawm lub zeb daim ntawv pov thawj ASME thiab kev ua haujlwm tsim cov qib tshwj xeeb no.
Koom Nrog Thaum Ntxov:Koom nrog koj pab neeg ua haujlwm engineering lossis kev tshuaj xyuas los tshuaj xyuas lub tshuab tsim khoom thiab kuaj cov txheej txheem.
Xav txog Logistics:Lub sij hawm txhuas yuav luv dua li European / Nyiv mills, tab sis qhov tseem ceeb ntawm kev xa khoom, kev xa khoom xa tuaj, thiab muaj peev xwm qeeb hauv kev lis kev cai / cov ntaub ntawv.
Cov ntsiab lus
Thaum Tuam Tshoj muaj peev xwm tsim tau SA387 Qib 5 Chav Kawm 2, nws qhov kev lees paub hauv cov haujlwm tseem ceeb thoob ntiaj teb yog nyob ntawm ntau lub npe zeb, ntawv pov thawj ASME siv tau, thiab nruj thib peb- pov thawj tog. Cov neeg yuav khoom yuav tsum tau ua ntej mills xws li Baosteel lossis Wuyang Steel nrog kev paub txog kev xa tawm thiab npaj los nqis peev hauv kev ruaj ntseg zoo. Rau lub hom phiaj- daim ntawv thov tseem ceeb (xws li, offshore, siab - siab H₂ kev pabcuam), ntau lub tuam txhab engineering tseem nyiam cov khoom tsim los ntawm EU lossis Japanese mills.
1. Dab tsi yog SA387 Qib 5 Chav Kawm 2?
Teb: SA387 Qib 5 Chav Kawm 2 yog chromium-molybdenum alloy steel phaj specification rau cov hlab ntsha siab, tshwj xeeb hauv kev kho cua sov kom zoo rau cov khoom zoo dua qub.
2.Dab tsi yog cov tshuaj muaj pes tsawg leeg ntawm SA387 Gr5 Cl 2?
Teb: Nws muaj pes tsawg leeg muaj xws li Chromium (4.00-6.00%), Molybdenum (0.45-0.65%), nrog siab tshaj plaws rau carbon (0.15%), Manganese (0.30-0.60%), Silicon (0.50%), Phosphorus, thiab Sulfur.
3.Yuav ua li cas SA387 Qib 5 Chav Kawm 2 txawv ntawm Chav Kawm 1?
Teb: Qhov sib txawv tseem ceeb yog kev kho cua sov yuav tsum tau ua. Qib 5 Chav Kawm 2 yuav tsum tau muab nkag rau hauv cov xwm txheej zoo li qub thiab tempered, ua kom muaj cov txheej txheem microstructure tshwj xeeb thiab cov khoom siv kho tshuab zoo ib yam, thaum Chav Kawm 1 muaj kev hloov kho cua sov ntau dua.
4.Dab tsi yog cov khoom siv kho tshuab ntawm SA387 Qib 5 Chav Kawm 2?
Teb: Nws muaj lub zog tensile yam tsawg kawg nkaus ntawm 515-690 MPa (75-100 ksi) thiab qhov tsawg kawg nkaus yield zog ntawm 310 MPa (45 ksi). Qhov normalized thiab tempered mob feem ntau muab zoo toughness.
5.Dab tsi yog SA387 Qib 5 Chav Kawm 2 siv rau?
Teb: Nws yog siv nyob rau hauv siab -kub hydrogen kev pab cuam nyob rau hauv roj av refineries, xws li nyob rau hauv hydroprocessing reactors, hydrocrackers, thiab lwm yam siab hlab ntsha raug rau sulfidic corrosion.
6.Dab tsi yog qhov yuav tsum tau kho cua sov rau SA387 Gr5 Cl 2 khoom?
Teb: Raws li qhov tshwj xeeb, SA387 Qib 5 Chav Kawm 2 daim hlau yuav tsum tau ua kom zoo (rhuab mus rau qhov ntsuas kub zoo tshaj qhov kev hloov pauv) thiab tom qab ntawd tempered (reheated rau ib qho kub hauv qab qhov kev hloov pauv).
7.Dab tsi yog ncej-weld kev kho cua sov (PWHT) rau SA387 Qib 5 Chav Kawm 2?
Teb: Welded fabrications yuav luag txhua zaus yuav tsum tau PWHT, feem ntau ua nyob rau hauv qhov kub thiab txias ntawm 1250-1350℃F (677-732 degree), kom txo tau kev ntxhov siab thiab kub siab rau thaj tsam kub.
8.Dab tsi muab hlau siv rau vuam SA387 Qib 5 Chav Kawm 2?
Teb: Vuam feem ntau siv AWS E502-XX lossis E505-XX chav kawm electrodes (piv txwv li, E502-16) rau kev sib xyaw ua ke, nrog kev tswj nruj ntawm preheat (feem ntau 300-400℃F / 149-204 degree) thiab interpass kub.
9.Qhov kev pabcuam siab tshaj plaws rau SA387 Qib 5 Chav Kawm 2 yog dab tsi?
Teb: Nws yog feem ntau siv rau kev pabcuam txuas mus ntxiv ntawm cov hlau kub txog li 1200℃F (649 degree) hauv qhov chaw refinery uas muaj hydrogen thiab sulfur.
10.Vim li cas SA387 Qib 5 Chav Kawm 2 nyiam rau qee lub nkoj?
Teb: Chav 2 yog qhov zoo dua yog tias tus qauv tsim yuav tsum tau lees paub, zoo ib yam khoom siv thiab txhim kho toughness los ntawm cov normalized thiab tempered microstructure, tshwj xeeb tshaj yog rau qhov tseem ceeb, tuab -section siab hlab ntsha.
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.
