Yam cuam tshuam rau tus nqi ntawm SA387 Qib 11 Chav Kawm 2
SA387 Qib 11 Chav Kawm 2yog ib tug normalized thiab tempered chromium-molybdenum (Cr-Mo) alloy steel phaj tshwj xeeb yog tsim los rau kev tsim kho ntawm welded siab hlab ntsha thiab siab - kub Cheebtsam nyob rau hauv xav tau kev pab cuam.
Tus nqi ntawm SA387 Qib 11 Chav Kawm 2 steel phaj yog cuam tshuam los ntawm kev sib xyaw ua ke ntawm kev lag luam thoob ntiaj teb, cov khoom siv tshwj xeeb, thiab kev yuav khoom thauj khoom. Kev nkag siab txog cov xwm txheej no yog qhov tseem ceeb rau kev siv nyiaj kom raug thiab kev yuav khoom.
I. Kev Lag Luam & Kev Lag Luam Kev Lag Luam
1.Raw Material & Alloy Surcharges (Feem ntau Volatile Factor):
Base Steel Nqe: khi rau ntiaj teb hlau ore, seem hlau, thiab nqi zog.
Alloy Surcharges: Raws li Chromium-Molybdenum steel, nws tus nqi raug cuam tshuam los ntawm cov nqi lag luam txhua hli ntawm Ferrochrome (Cr) thiab Molybdenum (Mo). Cov nqi ntxiv no feem ntau tuaj yeem ua ob lossis peb npaug ntawm tus nqi pib ntawm lub phaj thiab yog tus tsav tsheb tseem ceeb ntawm lub hli - mus rau - hli tus nqi hloov pauv.
2.Ntiaj teb Supply & Demand:
Kev Ua Lag Luam: Kev thov los ntawm cov haujlwm tseem ceeb xws li roj & roj refining, petrochemicals, thiab hluav taws xob tsim hluav taws xob cuam tshuam tus nqi. Kev ua haujlwm siab ua rau tus nqi nce.
Ntshuam / Export Dynamics: Kev lag luam cov cai, tariffs, thiab cov nqi thauj khoom los ntawm cov teb chaws tsim khoom loj (xws li, EU, USA, Is Nrias teb, Nyiv, Tuam Tshoj) cuam tshuam rau cheeb tsam muaj thiab nqi.
II. Khoom & Specification Factors
3.Plate Dimensions:
Thickness: Cov phaj tuab feem ntau muaj tus nqi siab dua ib kilogram vim yog siv ntau dua dov thiab kev kho cua sov.
Dav/Length: Tsis yog - tus qauv lossis qhov loj loj heev yuav raug nqi them.
1. Order Quantity:
Mill Orders: Ntau qhov ntau (piv txwv li, 20+ metric tons, tag nrho cov cua sov) ruaj ntseg tus nqi qis tshaj.
Stockist/Service Center Orders: Me me, txiav- mus rau- cov khoom loj tuaj ntawm tus nqi tseem ceeb ntawm ib kg vim kev ua, khoom muag, thiab tuav.
3. Kev kho cua sov & kev mob:
Chav Kawm 2 (N&T) yog tus qauv, tab sis ib qho kev xav tau rau kev kho cua sov ntxiv (xws li, simulated PWHT, tempering tshwj xeeb) ntxiv tus nqi.
Yog tias yuav Chav Kawm 1 (Annealed) rau kev kho cua sov tom qab, tus nqi pib pib sib txawv.
4.Testing & Certification Requirements:
Daim ntawv pov thawj Standard (MTC rau 3.1/3.2) suav nrog.
Kev Xeem Ntxiv ntxiv tus nqi:
Kev ntsuas cuam tshuam (Charpy V-Notch): Qhia qhov ntsuas kub thiab lub zog.
Enhanced NDE: Ultrasonic Testing (UT) mus rau ASTM A578 Qib (piv txwv li, Qib II lossis III rau cov ntawv thov tseem ceeb).
Thib peb-Kev tshuaj xyuas tog & tshwj xeeb cim.
III. Kev Muag Khoom & Logistics Factors
Khoom Taub Hau & Keeb Kwm:
Hauv tsev vs. Ntshuam: Hauv tsev (piv txwv li, EU, US) phaj feem ntau raug nqi ntau dua li kev xa khoom (piv txwv li, los ntawm Asia) tab sis muaj cov sij hawm luv luv, txo qis kev pheej hmoo, thiab ua raws li cov cai hauv zos (xws li "Buy America").
Mill vs. Distributor: Yuav ncaj qha los ntawm lub zeb yog pheej yig dua rau tej yaam num loj tab sis muaj sij hawm ntev txhuas. Distributors muab kev yooj yim thiab xa sai ntawm tus nqi siab dua.
Lub Sijhawm Lead & Ceev:
Lub sij hawm ua tus txheej txheem (8-12 lub lis piam) yog kev lag luam tshaj plaws.
Kev nrawm lossis "qhov chaw" yuav los ntawm Tshuag yog tus nqi them.
Logistics & Delivery:
Tus nqi rau kev xa khoom, kev tuav pov hwm, kev tuav pov hwm, thiab lub luag haujlwm ntshuam (yog tias tsim nyog).
Tus nqi kwv yees (Illustrative)
Raws li daim ntawv qhia kev siv nyiaj ntxhib, tag nrho cov nqi rau SA387 Gr.11 Cl.2 phaj feem ntau nyob nruab nrab ntawm:
$2,800 - $5,000 USD ib metric ton
(los yog $ 1.25 - $ 2.25 ib phaus)
Lower End: Siv rau loj - ntim zeb txiav txim ntawm tus qauv thickness nrog tsawg kawg nkaus kev sim.
Higher End: Siv rau me me, txiav- rau- qhov loj me los ntawm cov chaw pabcuam, cov phaj tuab, lossis kev txiav txim uas yuav tsum muaj kev sim ntau yam thiab UT.
Kev pom zoo rau tus nqi raug
Yuav kom tau txais ib daim ntawv cog lus ruaj khov, muab cov neeg xa khoom nrog cov ncauj lus kom ntxaws Thov rau Quotation (RFQ) qhia meej:
Tag Nrho Npe: SA387 Qib 11 Chav Kawm 2.
Dimensions: Thickness, Dav, Length, Quantity (kg los yog pieces).
Delivery Condition: Normalized thiab Tempered.
Kev Xeem Xeem: Kev ntsuas qhov ntsuas kub / lub zog, qib UT, hom ntawv pov thawj.
Destination: Qhov chaw xa khoom.
Xaus:Thaum lub Cr / Mo alloy surcharge yog qhov tseem ceeb ntawm qhov sib txawv, tus nqi kawg yog qhov sib xyaw ntawm cov kev qhia tshwj xeeb, ntim ntim, thiab cov khoom siv xaiv. Ib txwm tau txais ntau nqe lus nrog cov RFQ zoo ib yam rau kev sib piv kev lag luam tiag.
1. SA387 Qib 11 Chav Kawm 2 yog dab tsi?
SA387 Qib 11 Chav Kawm 2 yog ib qho qub thiab tempered chromium-molybdenum (1¼Cr-½Mo) alloy steel phaj tsim los rau siab -kub siab cov hlab ntsha, muab lub zog siab dua li Chav Kawm 1 thaum tswj kev zoo weldability thiab creep kuj nyob rau hauv refinery kev pab cuam.
2. Cov khoom siv kho tshuab ntawm SA387 Qib 11 Chav Kawm 2 yog dab tsi?
Nyob rau hauv nws qhov normalized thiab tempered mob, SA387 Qib 11 Chav Kawm 2 muab lub zog tensile ntawm 485–620 MPa (70–90 ksi) thiab qhov tsawg kawg nkaus tawm lub zog ntawm 275 MPa (40 ksi), ua rau nws haum rau siab - kev nyuaj siab, elevated - kub tsim
3. SA387 Qib 11 Chav Kawm 2 txawv li cas ntawm Chav Kawm 1?
Class 2 yog normalized thiab tempered rau siab dua li -suplied zog, thaum Class 1 yog annealed rau siab tshaj formability; ob leeg sib koom tib yam tshuaj muaj pes tsawg leeg tab sis raug xaiv raws li fabrication xav tau kev pab thiab tsim kom muaj kev ntxhov siab.
4. Qhov kev pabcuam siab tshaj plaws rau SA387 Qib 11 Chav Kawm 2 yog dab tsi?
SA387 Qib 11 Chav Kawm 2 feem ntau yog siv hauv kev pabcuam txuas ntxiv mus txog 595℃(1100℃F), qhov twg nws cov ntsiab lus chromium thiab molybdenum muab kev tiv thaiv zoo rau oxidation thiab hydrogen nres.
5. Dab tsi yog cov ntawv thov rau SA387 Qib 11 Chav Kawm 2 daim hlau?
Qib no yog siv dav hauv hydrotreaters, hydrocrackers, heat exchangers, thiab lwm yam siab -kub siab cov hlab ntsha hauv petrochemical refineries thiab fais fab - tiam.
6. Cov txheej txheem vuam dab tsi yuav tsum tau ua rau SA387 Qib 11 Chav Kawm 2?
Vuam yuav tsum tau qis -hydrogen electrodes, preheating (150–205℃/ 300–400℃F), thiab yuav tsum tau post-weld heat treatment (PWHT) nyob ib ncig ntawm 620–690℃(1150–1275℃F) los tiv thaiv kev tawg thiab rov ua kom corrosion.
7. Qhov sib npaug European qib rau SA387 Qib 11 Chav Kawm 2 yog dab tsi?
Qhov sib npaug nyob sab Europe zoo tshaj plaws yog 13CrMo4-5 (1.7335) raws li EN 10028-2, uas muaj cov ntsiab lus zoo sib xws thiab feem ntau muab nkag rau hauv ib qho xwm txheej thiab tempered.
8. SA387 Qib 11 Chav Kawm 2 piv rau Qib 22 li cas?
Qib 11 (1.25Cr-0.5Mo) muaj qis dua - qhov kub thiab txias zog thiab hydrogen tsis kam tshaj Qib 22 (2.25Cr-1Mo), ua rau nws muaj txiaj ntsig zoo rau kev pab cuam nruab nrab hauv kev ua kom zoo thiab cov txheej txheem tshuaj lom neeg.
9. Charpy cuam tshuam dab tsi rau SA387 Qib 11 Chav Kawm 2 yog dab tsi?
Charpy V-notch impact test feem ntau teev los ntawm cov neeg yuav khoom; Cov kev xav tau ntau tshaj yog 20 J (15 ft-lb) qhov nruab nrab qhov nruab nrab ntawm qhov kub ntawm +10℃F thiab -20℃F (–12℃txog -29 degree) rau kev siv lub nkoj siab.
10. Qhov txawv ntawm SA387 Qib 11 Chav Kawm 2 thiab AISI 4130 yog dab tsi?
Thaum ob qho tib si yog Cr-Mo steels, SA387 Qib 11 Chav Kawm 2 yog cov khoom siv phaj rau cov hlab ntsha siab nrog cov kev cai nruj thiab kev sim, qhov AISI 4130 yog lub hom phiaj dav dav / bar alloy nrog cov khoom sib txawv thiab kev siv.
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.
