ASTM A514 Qib Fyog qhov siab - tawm los, quenched thiab tempered alloy steel phaj feem ntau yog siv rau cov qauv siv uas qhov hnyav txuag thiab siab zog yog qhov tseem ceeb. Nws yog ib feem ntawm tsev neeg ntawm cov hlau feem ntau raug xa mus los ntawm lub npe lag luam T-1 steel.
Ntsiab Specifications
Yield Strength: Yam tsawg kawg 100 ksi (kwv yees . 690 MPa) rau thicknesses txog 2.5 ntiv tes.
Tensile Strength: Feem ntau 110-130 ksi.
Qhov xwm txheej: Muab xa mus rau hauv lub xeev quenched thiab tempered kom ua tiav nws siab - lub zog thiab cov khoom siv tawv tawv.
Thickness Range: Cov qauv muaj rau Qib F yog feem ntau mus txog 2.5 nti (63.5 mm).
Dab tsi cuam tshuam rau tus nqi ntawm A514 Qib E?
Tus nqi ntawm A514 Qib E (feem ntau ua lag luam sau npe "T1 Hom E") cuam tshuam los ntawm cov txheej txheem nyuaj ntawm cov khoom, xws li cov khw muag khoom thoob ntiaj teb mus rau cov ntsiab lus tshwj xeeb. Nws yog cov khoom lag luam zoo tshaj plaws uas ua rau tus nqi tseem ceeb tshaj li cov qauv hlau zoo li A36.
Hauv qab no yog cov ncauj lus kom ntxaws ntxaws ntawm cov tseem ceeb cuam tshuam:
1. Raw Material & Alloy Nqi (Tus Thawj Tsav Tsheb)
Qhov no yog qhov feem ntau volatile thiab cuam tshuam qeb.
Base Steel Nqe: khi rau tus nqi ntawm cov hlau ore thiab prime seem steel.
Alloying Elements: A514 Qib E's chemistry yog alloy -intensive. Kev hloov pauv hauv kev lag luam thoob ntiaj teb rau cov ntsiab lus no muaj kev cuam tshuam ncaj qha thiab tam sim ntawd:
Chromium (Cr), Molybdenum (Mo), Nickel (Ni): Qhov tseem ceeb rau lub zog thiab hardenability. Lawv cov nqi yog volatile.
Boron (B): Ntxiv nyob rau hauv feeb kom muaj nuj nqis (0.0005-0.005%) tab sis yog ib qho tseem ceeb thiab feem ntau kim additive uas dramatically nce hardenability.
Manganese, Silicon, thiab lwm yam.
Cov Nqi Zog: Kev tsim cov alloys thiab cov hlau nws tus kheej yog lub zog loj heev - siv zog.
2. Tus nqi tsim khoom & ua haujlwm (Tus nqi-Ntxiv hwm)
Quenching & Tempering (Q&T) Txheej Txheem: Qhov no tsis yog tus qauv kub -cov khoom dov. Cov txheej txheem Q&T yuav tsum tau tshwj xeeb, siab - lub tshuab hluav taws xob, tswj qhov kub thiab txias, thiab kev tuav pov hwm ntxiv, ntxiv tus nqi ntau.
Kev Ua Haujlwm Zoo & Kev Ntsuas: Ua kom tau raws li tus qauv ASTM A514 yuav tsum tau kuaj nruj thiab raug nqi:
Yuav tsum tau kuaj qhov cuam tshuam: Charpy V- ntsuas ntsuas ntawm -50℃F (-46 degree) rau txhua qhov cua sov (melt).
Daim ntawv pov thawj tag nrho Mechanical & Chemical: Txhua lub phaj yog muab nrog cov ncauj lus kom ntxaws Mill Test Report (MTR).
Mill Economics: Cov nqi khiav haujlwm, cov sijhawm tsim khoom, thiab kev ua haujlwm ntawm cov mills tshwj xeeb uas tsim cov qib no.
3. Kev Lag Luam Dynamics & Supply Chain
Ntiaj teb no thiab Sector-Specific Demand: Xav tau los ntawm kev lag luam tseem ceeb-kev tsim kho, mining, crane manufacturing, thiab cov khoom hnyav- tsav tus nqi. Ib qho boom hauv infrastructure lossis mining nce kev sib tw rau cov phaj muaj.
Supply Concentration: Tsawg heev mills thoob ntiaj teb muaj peev xwm tsim quenched & tempered alloy phaj rau qhov specification no. Lub hauv paus khoom siv tsawg no cuam tshuam rau tus nqi zog thiab muaj nyob.
Txoj Cai Kev Lag Luam & Cov Nqi Se: Hauv kev lag luam xws li Teb Chaws Asmeskas, Tshooj 232 tariffs (lossis lwm yam kev ntsuas kev lag luam) ntawm cov hlau tuaj txawv teb chaws cuam tshuam rau tus nqi ntawm ob qho tib si txawv teb chaws thiab txawv teb chaws A514 phaj los ntawm kev hloov pauv kev sib tw.
Freight & Logistics: Tus nqi thauj cov phaj hnyav los ntawm lub zeb mus rau qhov chaw pabcuam lossis kawg -neeg siv, cuam tshuam los ntawm cov nqi roj thiab kev cuam tshuam ntawm cov saw hlau.
4. Kev yuav khoom-Cov yam ntxwv tshwj xeeb (Koj cov ntsiab lus xaj)
Cov xwm txheej no txiav txim siab tus nqi kawg uas tau hais rau tus neeg yuav khoom.
Ntim: Mill- ncaj qha tsheb thauj khoom (TL) ntau npaum li cas pheej yig dua ib phaus dua li ib lub phaj yuav los ntawm lub chaw pabcuam steel.
Thickness & Size: Standard thicknesses (e.g., 1") and sizes are most economical. Oversized plates, non-standard thicknesses, or extremely thick plates (>2 ") tau txais cov nqi them vim muaj kev sib tw ntau dua thiab kev kho cua sov.
Kev Ua Ntxiv / Ntawv Pov Thawj: Puas yog qhov kev txiav txim xav tau?
Kev Ntsuas Ultrasonic (UT)?
Kev Npaj Tshwj Xeeb Ntug (piv txwv li, beveling rau vuam)?
Thib peb-kev tshuaj xyuas lossis ntawv pov thawj?
Cov ntaub ntawv qhia txog hardness?
Txhua qhov ntxiv- ntawm qhov kev pabcuam nce nqi.
Lub Sijhawm Lead: "Spot" lossis maj xaj xaj kom tus nqi siab dua qhov kev txiav txim muab tso ua ntej uas tuaj yeem teem sijhawm rau hauv lub tshuab ua haujlwm.
Khoom Siv Chemistry
|
SI |
FE |
MN |
CR |
MO |
TSI |
B |
V |
C |
|
0.28% |
98.0% |
0.85% |
0.48% |
0.2% |
0.02% |
0.003% |
0.05% |
0.27 – 0.30% |
1. Dab tsi yog A514 Qib F steel siv rau?
A514 Qib F feem ntau yog siv rau hauv siab - muaj zog cov qauv siv xws li cov khoom siv hnyav, crane booms, mining machinery, thiab txuas hniav uas yuav tsum muaj lub zog zoo tshaj - rau - qhov hnyav piv.
2. Lub zog tawm ntawm A514 Qib F yog dab tsi?
Rau cov phaj siab txog 1.25 ntiv tes (31.75 hli) tuab, qhov tsawg kawg nkaus lub zog yog 100 ksi (690 MPa). Rau cov phaj tuab, lub zog tawm los txo qis, feem ntau mus txog 90 ksi (620 MPa) txog 2.5 ntiv tes.
3. A514 Qib F puas tuaj yeem welded?
Yog lawm, nws tuaj yeem welded, tab sis nws yuav tsum muaj cov txheej txheem nruj xws li preheating, siv qis -hydrogen electrodes, thiab feem ntau tshaj tawm -weld tshav kub kho kom tsis txhob tawg vim nws cov hardenability siab.
4. A514 Qib F txawv li qib E li cas?
Qhov sib txawv tseem ceeb yog nyob rau hauv chemistry: Qib F muaj qis carbon thiab alloy cov ntsiab lus (thiab tsis muaj boron), uas ua rau weldability zoo dua thiab qis dua carbon sib npaug, thaum ob qib muab tib yam tsawg kawg nkaus yield zog.
5. Lub hardness ntawm A514 Qib F yog dab tsi?
Lub hardness ntau yam rau A514 Qib F yog kwv yees li HBW 280-340 (Brinell) lossis HRC 29-36, tab sis hardness tsis yog cov cuab yeej teev hauv ASTM tus qauv.
6. Puas yog A514 Qib F zoo ib yam li T1 steel?
Yog lawm, A514 Qib F feem ntau raug xa mus rau "T1 Hom F" lossis "hloov T1." Lub npe "T1" Ameslikas los ntawm cov cim lag luam, tab sis feem ntau nws yog siv rau tsev neeg ntawm siab - lub zog, quenched thiab tempered steels.
7. Cov European sib npaug ntawm A514 Qib F yog dab tsi?
Qhov sib npaug European ze tshaj plaws yog S690QL lossis S690Q / QL1 raws li EN 10025-6, uas muaj qhov zoo sib xws 690 MPa yield zog thiab quenched & tempered mob.
8. Koj puas tuaj yeem nplaim hluav taws txiav A514 Qib F?
Yog lawm, tab sis nws yuav tsum tau ua kom sov (feem ntau 300-500℃F) thiab tswj kom txias kom tsis txhob tawv thiab tawg ntawm ntug txiav. Plasma lossis waterjet txiav yog feem ntau nyiam lwm txoj hauv kev.
9. Cov tshuaj muaj pes tsawg leeg ntawm A514 Qib F yog dab tsi?
Nws muaj cov ntsiab lus qis dua (max 0.20%) piv rau Qib E, nrog rau kev txo qis ntawm chromium, molybdenum, thiab tsis muaj boron, uas ua rau qis carbon sib npaug rau kev txhim kho weldability.
10. Vim li cas thiaj xaiv A514 Qib F dhau qib E?
Xaiv Qib F thaum weldability thiab fabrication yooj yim yog qhov tseem ceeb tshaj plaws rau cov qauv complex, raws li nws cov leaner chemistry txo qhov kev pheej hmoo ntawm vuam -txog tawg piv rau qib siab dua - alloy Qib E.
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.
