Qhov muaj pes tsawg leeg ntawm A514 qib F yog dab tsi?
Cov ntaub ntawv khoomtion ntawmA514 qib F
ASTM A514 Qib F yog quenched thiab tempered alloy steel phaj siv nyob rau hauv cov qauv siv uas yuav tsum tau muaj zog yield zog ua ke nrog zoo formability thiab toughness. A514 Qib F muaj qhov tsawg kawg nkaus lub zog ntawm 100 ksi thiab tej zaum yuav raug txiav txim nrog ntxiv Charpy V-notch toughness test.
Daim ntawv thov
Cov ntawv thov rau A514 Qib F suav nrog cov tsheb thauj mus los, cov khoom siv tsim kho, crane booms, mobile aerial work platforms, khoom siv ua liaj ua teb, tsheb hnyav thiab chassis.
Alloy steel phaj A514 Qib F, A514GrF muaj ntau hom hlau alloy xws li Nickel, Chromium, Molybdenum, Vanadium, Titanium, Zirconium, Copper thiab Boron thaum dov. Cov tshuaj sib xyaw ua ke ntawm kev ntsuas cua sov yuav tsum ua raws li cov lus hauv qab no.Raws li cov khoom xa tuaj, siab zog steel phaj ASTM A514 Qib F yuav tsum nyob rau hauv quenched thiab tempered.Tension test thiab Hardness test yuav tsum tau ua nyob rau hauv lub zeb thaum dov. Tag nrho cov txiaj ntsig kev ntsuas qhov tseem ceeb rau cov qauv hlau phaj A514GrF yuav tsum sau rau ntawm daim ntawv pov thawj zeb xeem.
Alloy steels raug xaiv los ntawm AISI plaub-tus lej. Lawv teb tau ntau dua rau kev kho cua sov thiab kho tshuab dua li carbon steels. Lawv suav nrog ntau hom steels uas muaj ntau tshaj qhov txwv ntawm Va, Cr, Si, Ni, Mo, C thiab B hauv cov pa roj carbon steel.
Cov ntaub ntawv hauv qab no muab cov ntsiab lus ntxiv txog AISI A514 qib F alloy steel.
Tshuaj muaj pes tsawg leeg & Mechanical khoom
Tshuaj muaj pes tsawg leeg
Cov tshuaj muaj pes tsawg leeg ntawm AISI A514 qib F alloy steel yog teev nyob rau hauv cov lus hauv qab no.
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A514 Qib F tshuaj muaj pes tsawg leeg |
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A514 Qib F |
Cov ntsiab lus Max (%) |
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|
C |
Mn |
P |
S |
Si |
Ni |
Cr |
Mo |
V |
Ti |
Zr |
Cu |
B |
Nb |
|
|
0.10-0.20 |
0.60-1.00 |
0.035 |
0.035 |
0.15-0.35 |
0.70-1.00 |
0.40-0.65 |
0.40-0.60 |
0.03-0.08 |
- |
- |
0.15-0.50 |
0.001-0.005 |
- |
|
Carbon sib npaug: Ceq=【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
Lub cev muaj zog
Cov lus hauv qab no qhia txog lub cev ntawm AISI A514 qib F alloy hlau.
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Qib |
A514 Qib F Mechanical Property |
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|
Thickness |
Yield |
Tensile |
Elongation |
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|
A514 qib F |
mm |
Min Mpa |
Mpa |
Tsawg% |
|
20 |
690 |
760-895 |
18 |
|
|
20-65 |
690 |
760-895 |
18 |
|
|
65-150 |
620 |
690-895 |
18 |
|
1. Dab tsi yog qhov yuav tsum tau ua kom muaj zog toughness rau A514 Qib F?
A514 Qib F feem ntau yuav tsum muaj qhov tsawg kawg nkaus Charpy V-notch cuam tshuam lub zog ntawm 54 Joules (40 ft- lbs) ntawm -40℃(-40℃F), kom ntseeg tau cov pob txha zoo heev hauv qhov chaw txias thiab cov ntawv thov kev thauj khoom.
2. A514 Qib F daim hlau tuaj yeem txiav txim siab npaum li cas?
Nws yog feem ntau tsim nyob rau hauv thicknesses txog li 100 hli (4 nti) thaum tuav tag nrho los ntawm - thickness zog, tab sis qee lub mills tuaj yeem muab cov phaj tuab nrog cov khoom kho kom zoo.
3. Dab tsi muab cov hlau uas pom zoo rau vuam A514 Qib F?
Vuam yuav tsum muaj kev sib tw siab - zog, qis-hydrogen electrodes xws li E11018 lossis E12018 kev faib tawm, nrog nruj ua raws li preheat (300-400℃F) thiab interpass kub tswj los tiv thaiv hydrogen cracking.
4. Puas yog A514 Qib F xav tau tom qab-weld heat treatment (PWHT)?
Yog lawm, PWHT tau pom zoo rau feem ntau cov khoom siv welded los txo cov kev ntxhov siab uas seem thiab rov ua kom tawv nqaij hauv tshav kub- thaj tsam cuam tshuam, tshwj xeeb tshaj yog rau cov ntu tuab thiab cov pob qij txha nruj heev.
5. A514 Qib F puas tuaj yeem yog nplaim taws- txiav yam tsis muaj kev ceev faj tshwj xeeb?
Nplaim txiav yuav tsum tau preheating rau 200-300℃F ua ntej txiav los tiv thaiv hardening thiab micro-cracking raws ntug txiav, tshwj xeeb tshaj yog rau thicknesses saum 2 ntiv tes.
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.
