Kub Kub Bearing Steel (M50)
HOM: PROMISTEEL
Qib: M50, M50NiL, 80MoCrV42-16, 1.3551
Standard: AMS 6491, AMS 6278
MELTING PROCESS: VIM + VAR (ob chav nqus)
KHOOM: Forged Bar, Kub-Rolled Round Bar, Hlau Qws
HARDNESS: Ntau dua lossis sib npaug rau 61-63 HRC (Tom qab kho cua sov)
SERVICE TEMP: Txog 315℃(600℃F)
APPLICATION: Jet Engine Bearings, Gas Turbines, APUs
MOQ: 25 Tuj
M50 High Temperature Bearing Steelyog cov khoom siv tseem ceeb rau kev lag luam aerospace, tshwj xeeb tsim los ua haujlwm hauv ib puag ncig uas standard bearing steels (zoo li 52100) ua tsis tiav.
Thaum 52100 softens saum 150 degree,M50 (AMS 6491)tuav ib tug hardness ntawm>60 HRCntawm kev pabcuam kub txog li315℃(600℃F). Tsim tshwj xeeb ntawm covVIM-VAR (Nqus Induction Melting + Vacuum Arc Remelting)txheej txheem, peb cov M50 steel muaj qhov qis tshaj qhov ua tau suav nrog qib, kom ntseeg tau tias muaj kev qaug zog tseem ceeb rauaircraft cav main s qabthiabsiab - gas turbines ceev.
Cov khoom Dedaim ntawv sau npe
Peb muab aerospace- qib steel rooj sib tham nruj AMS specifications.
Table-1
Precision cov ntaub ntawv rau huab ib puag ncig.
InterKev Sib Piv Tebchaws Qib |
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| Lub Npe | AMS Txuj | UNS | DIN/EN | Hom |
| M50 | TIAB SA 6491 | T11350 | 80MoCrV42-16 (1.3551) |
Los ntawm Hardening |
| M50 NiL | TIAB SA 6278 | K91283 | - |
Case Hardening (Fracture Tough) |
| H10 Mod | - | - | - |
Carburizing High Temp |
Table-2
Molybdenum thiab Vanadium muab "Red Hardness" (Huab Kub Resistance).
Tshuajal Composition (Mass Fraction %) |
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| Qib | C | Cr | Mo | V | Ni | Mn |
| M50 | 0.80~0.85 | 4.00~4.25 | 4.00~4.50 | 0.90~1.10 | Tsawg dua los yog sib npaug li 0.15 | Tsawg dua los yog sib npaug li 0.35 |
| M50 NiL | 0.11~0.15 | 4.00~4.25 | 4.00~4.50 | 1.13~1.33 | 3.20~3.60 | Tsawg dua los yog sib npaug li 0.35 |
Nco tseg: P Tsawg dua lossis sib npaug rau 0.015, S Tsawg dua lossis sib npaug rau 0.008 (VIM-VAR zoo).
Table-3
Cov ntaub ntawv nyoos muab nrog Ultrasonic Testing (UT) Class A/AA.
Muab khoom Rkev & Formats |
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| Yam khoom | Qhov Loj (mm) | Kev Xa Khoom | Nto tiav |
| Forged Bar | Dia: 50 - 300 | Spheroidize Annealed | Peeled / tig |
| Round Bar | Dia: 10 - 100 | Kub Rolled / Annealed |
Nruab nrab tsis muaj av |
| Hlau Rod | Dia: 5.5 - 20 | Annealed / Pickled |
Kos / Polished |
Cov yam ntxwv tseem ceeb (Vim li cas VIM-VAR?)
VIM-VAR Kev huv huv
"Ob Nqus Nqus" melting tshem tawm cov pa yaj (Hydrogen, Nitrogen) thiab tsis yog{0}} cov khoom siv hlau. Qhov no tsis yog -kev sib tham tau rau aerospace bearings, txawm tias microscopic impurities tuaj yeem ua rau muaj kev puas tsuaj loj heev ntawm 30,000 RPM.
Siab kub Hardness
M50 khaws nws qhov tshwj xeeb hardness ntawm kev ua haujlwm kub qhov twg cov roj hluavtaws siv (txog 315℃/ 600℃F).
Lub Neej Zoo Kawg Nkaus
Kev faib tawm carbide tsis sib xws thiab ultra- suav nrog qis ua rau Rolling Contact Fatigue (RCF) lub neej siab dua li huab cua- melted steels.
M50NiL Option
Rau cov ntawv thov xav tautawg toughness, peb muabM50 NiL. Nws nta ib qho nyuaj carburized nto rau hnav tsis kam thiab cov ductile core los tiv thaiv cov kabmob sib tw los ntawm kev tawg ntawm kev kub ntxhov siab.
Tej kev siv
Cov khoom no yog nruj me ntsis rau siab -kev ua tau zoo daim ntawv thov:
- Aero-Engines:Main ncej bearings rau dav hlau cav thiab helicopter rotors.
- Auxiliary Power Units (APUs):Siab -cov kabmob ceev hauv lub tshuab fais fab.
- Gas Turbines:Bearings rau av -raws li lub zog tsim turbines.
- Turbochargers:High -kev ua tau zoo tsheb turbocharger ncej.
- Siab -Temp Gearboxes:Kev sib tw transmissions xav tau cua sov.
FAQ
Q1: VIM-VAR txhais li cas?
A1: Nws sawv cev rau Nqus Induction Melting ua raws li lub tshuab nqus tsev Arc Remelting. Nws yog tus nqi them ob npaug - txheej txheem melting uas ua rau cov hlau huv tshaj plaws. Rau M50 aerospace bearings, VIM-VAR yog qhov yuav tsum tau ua kom tau raws li AMS 6491 tus qauv.
Q2: M50 vs. M50NiL: Kuv yuav xaiv qhov twg?
A2: Xaiv M50 yog tias koj xav tau tus qauv siab - qhov kub thiab txias uas nyuaj rau txhua txoj hauv kev (los ntawm - hardening).
Xaiv M50NiL yog tias cov kabmob tig ntawm ultra-kev kub ceev uas lub zog centrifugal tuaj yeem tawg lub nplhaib. M50NiL muaj lub cev tawv, tawv (cov ntaub ntawv- hardening) uas tiv thaiv pob txha.
Q3: M50 puas tuaj yeem siv los ua riam?
A3: Thaum ua tau vim nws qhov nyuaj, M50 tsis zoo rau cov riam vim nws tsis muaj corrosion kuj ntawm 440C thiab nyuaj rau kev kho cua sov yam tsis muaj lub tshuab nqus tsev tshwj xeeb.
Q4: Puas yog M50 corrosion resistant?
A4: Tsis yog M50 yog cov cuab yeej steel hom alloy, tsis yog stainless hlau. Nws yuav xeb yog tias tsis lubricated. Yog tias koj xav tau qhov kub thiab txias ntxiv rau kev tiv thaiv corrosion, xav txog Cronidur 30 lossis XD15NW (hu rau peb kom muaj).
Cim npe nrov: Tuam Tshoj siab kub bearing steel (m50) manufacturers, lwm tus neeg
Tom ntej
Carburizing Bearing hlauKoj Tseem Yuav Zoo Li
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