Cov yam ntxwv cuam tshuam rau tus nqi ntawm SA 387 GR 11 steel daim hlau
SA387 Qib 11 Chav Kawm 1 yog ASME / ASTM chromium-molybdenum alloy steel phaj, teev rau siab -kub siab cov hlab ntsha thiab boilers, muab cov corrosion zoo / oxidation tsis kam vim nws ~ 1% Chromium thiab ~ 0.5% Molybdenum cov ntsiab lus, nrog rau Chav Kawm 1 qhia txog qib qis tensile, roj siv thiab qib 2. Kev lag luam rau cov tso tsheb hlau luam thiab cov kav dej uas xav tau lub zog ntawm qhov kub thiab txias (H2S) ib puag ncig, muab kev txhim kho tensile zog, kub tsis kam, thiab tiv thaiv{10}} xeb.
Muab qhov tshwj xeeb, tiag tiag- nqi sijhawm rau SA 387 Qib 11 phaj tsis tuaj yeem ua tau, vim tias cov nqi hlau muaj zog heev thiab hloov pauv raws li ntau lub khw thiab qhov project- tshwj xeeb yam. Txawm li cas los xij, kuv tuaj yeem piav qhia qhov hloov pauv tseem ceeb uas txiav txim siab tus nqi thiab muab lub hauv paus rau kev tau txais cov lus qhia meej.
Yam tseem ceeb cuam tshuam tus nqi:
Kev ua lag luam (tus tsav tsheb loj tshaj plaws):
Cov Nqi Khoom Siv Raw: Cov nqi rau cov hlau ore, cov khoom seem hlau, thiab lub zog (tshwj xeeb yog qhov tseem ceeb rau cov hlau alloy steel) hloov txhua hnub.
Ntiaj teb no Demand/Supply: Muaj kev lag luam nyob rau hauv cov sectors tseem ceeb (zog, petrochemicals) thiab kev lag luam thoob ntiaj teb ntws cuam tshuam cov nqi phaj.
Alloy Surcharges: Raws li chromium-molybdenum alloy, tus nqi raug cuam tshuam hnyav los ntawm kev lag luam tus nqi ntawm Chromium (Cr) thiab Molybdenum (Mo). Cov nqi ntxiv no tuaj yeem ua tau ntau heev thiab hloov kho txhua hli los ntawm cov mills.
Khoom Specifications:
Chav Kawm: Chav Kawm 2 (Normalized & Tempered) muaj ntau dua thiab feem ntau tsis tshua kim dua Chav Kawm 1 (Annealed) rau cov khoom lag luam txheem.
Loj & Quantity: Thickness, dav, ntev, thiab tag nrho cov kev txiav txim hnyav heev cuam tshuam tus nqi tsev. Mill- xaj kom muaj nuj nqis (piv txwv li, tag nrho cov cua sov, 20+ tons) yog pheej yig dua ib kg dua li me me, txiav - rau - qhov loj me los ntawm qhov chaw pabcuam.
Kev Ntsuas Cov Kev Ntsuas: Kev ntsuas ntxiv dhau qhov kev lees paub tus qauv (xws li, kev cuam tshuam kev ntsuas ntawm qhov kub thiab txias, txhim kho ultrasonic kuaj (UT) rau A578 Qib) ntxiv tus nqi.
Qhov chaw muab khoom:
Mill Direct (piv txwv li, ArcelorMittal, SSAB, Dillinger): Qhov zoo tshaj plaws rau qhov loj, qhov project- raws li kev txiav txim. Lub sijhawm ua haujlwm ntev.
Steel Service Center / Stockist: Qhov zoo tshaj plaws rau cov khoom me me, xa khoom sai, tab sis ntawm tus nqi.
Keeb Kwm: Hauv tsev (xws li US, EU) ntau lawm feem ntau raug nqi ntau dua li kev xa khoom (xws li los ntawm Is Nrias teb, Tuam Tshoj), tab sis suav nrog tsawg dua logistics / lub sij hawm xa tuaj thiab tej zaum yuav ua raws li "Buy America" hauv zos.
Tus nqi kwv yees (rau kev siv nyiaj txiag):
Raws li kev siv nyiaj txiag tsis zoo (raws li kev lag luam tsis ntev los no, yuav hloov pauv):
Base Phaj Nqi: Cov khoom nyoos "khoom" nqi rau carbon steel phaj.
Alloy Surcharge: Ib qho tseem ceeb ntxiv rau Cr-Mo cov ntsiab lus. Qhov no feem ntau tuaj yeem ua ob lossis peb npaug ntawm tus nqi pib.
Yam Ntau Yam: Tag nrho cov nqi rau SA387 Gr.11 phaj feem ntau poob hauv thaj tsam ntawm $ 2,500 txog $ 4,500 USD ib metric ton (los yog $ 1.15 txog $ 2.00 ib phaus), nyob ntawm qhov hnyav ntawm cov khoom saum toj no.
Piv txwv li: Ib qho me me - xaj, txiav daim 1" tuab phaj los ntawm lub chaw pabcuam yuav raug nqi $ 4,500 / tuj, thaum lub zeb loj txiav rau 50 hli tuab phaj yuav yog $ 2,800 / ton.
Yuav Ua Li Cas Kom Tau Txais Cov Quote Zoo:
Txhawm rau kom tau txais tus nqi siv tau, koj yuav tsum muab cov neeg xa khoom nrog daim ntawv thov kom tiav (RFQ) suav nrog:
Daim Ntawv Qhia Tag Nrho: ASTM / ASME SA387 Qib 11, qhia rau Chav Kawm 1 lossis Chav Kawm 2.
Qhov Loj: Thickness (mm lossis hauv), Dav (mm lossis hauv), Ntev (mm lossis hauv).
Ntim: Tag nrho qhov hnyav (kg lossis lbs) lossis tus lej ntawm daim phiaj.
Kev kho cua sov: "Normalized & Tempered" (rau Cl. 2) lossis "Annealed" (rau Cl. 1).
Daim ntawv pov thawj: Standard Mill Test Certificate (MTC) rau EN 10204 Hom 3.1 lossis 3.2.
Cov Kev Xav Tau Ntxiv: Kev sim cuam tshuam (kub, lub zog), NDE (UT qib), cim tshwj xeeb.
Destination: Qhov chaw xa khoom (chaw nres nkoj, chaw ua haujlwm).
Kev Pom Zoo: Hu rau 3-4 lub chaw pabcuam steel muaj npe lossis mills nrog koj cov ncauj lus kom ntxaws RFQ rau kev sib tw, tus nqi lag luam tam sim no. Ib txwm paub meej tias cov khoom yuav raug muab nrog ASME SA-387 daim ntawv pov thawj zoo yog tias nws yog rau lub nkoj siab.
1. Cov tshuaj muaj pes tsawg leeg ntawm A387 Qib 5 txawv li qib 11 lossis qib 12 li cas?
A387 Qib 5 yog ntau dua -chromium alloy steel, feem ntau muaj nyob ib ncig ntawm 5% chromium thiab 0.5% molybdenum. Qhov no tso nws nyob nruab nrab ntawm Qib 11 ntau dua (~ 1.25% Cr) thiab Qib 22 (~ 2.25% Cr), muab nws qhov zoo sib xws ntawm oxidation tsis kam thiab nce siab -qhov kub thiab txias piv rau qis dua- qib alloy, thaum muaj peev xwm ua tau tus nqi ntau dua -{3} kev pab cuam ntau dua li steel.
2. Dab tsi yog Qhov Kev Pab Cuam Tshaj Plaws Hauv Tsev Kawm Ntawv Qib Siab 2?
Lub hom phiaj tseem ceeb ntawm A387 Qib 5 Chav Kawm 2 yog nyob rau hauv nws qhov kev tiv thaiv oxidation zoo dua thiab muaj zog tuav ntau dua ntawm qhov kub thiab txias feem ntau yog li ntawm 540℃mus rau 600℃(1000℃F txog 1112℃F), tshaj qhov muaj peev xwm ntawm Qib 11 lossis 12. Qhov no ua rau nws tsim nyog rau cov khoom siv hauv catalytic furnacetro lwm qhov kev pabcuam hnyav, kev hloov pauv ntawm cov khoom siv hluav taws xob, scaling thiab creep yog kev txhawj xeeb tseem ceeb.
3. Dab tsi yog qhov tseem ceeb ntawm Vuam thiab Fabrication Considerations rau A387 Gr.5 Cl.2?
Vuam A387 Qib 5 Chav Kawm 2 yuav tsum muaj cov txheej txheem nruj vim nws cov ntsiab lus alloy siab dua. Nws xav tau qhov yuav tsum tau ua kom sov (feem ntau yog 175-250℃/ 350-480℃F) thiab nruj tswj qhov kub thiab txias los tiv thaiv qhov nyuaj, tawg-sensitive microstructures. Tsis tas li ntawd, qhov yuav tsum tau ua tom qab Weld Heat Treatment (PWHT) nyob rau hauv thaj tsam ntawm 675-730℃(1250-1350℃F) yog qhov tseem ceeb kom npau taws rau thaj tsam weld, txo kev ntxhov siab, thiab rov ua kom corrosion.
4. Dab tsi yog Tus Txheej Txheem Kev Kho Hniav Kub Rau A387 Qib 5 Chav Kawm 2 Phaj?
A387 Qib 5 Chav Kawm 2 daim hlau tau muab rau hauv cov xwm txheej zoo li qub thiab Tempered. Normalizing muaj cua sov saum toj no qhov kev hloov pauv thiab cua txias kom ua kom zoo dua cov qauv nplej, ua raws li tempering ntawm sub- kub tseem ceeb kom ua tiav qhov kev pom zoo ua ke ntawm lub zog thiab cov khoom siv tau teev tseg hauv tus qauv (feem ntau yog qhov tsawg kawg nkaus lub zog ntawm 310 MPa / 45 ksi).
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.
