Carburizing Bearing hlau
HOM: PROMISTEEL
QIB: 8620, 4320, G20CrNiMo, 20CrNiMo, 1.6523
PIB: Round Bar, Forged Nplhaib, Thaiv
KEV PAB CUAM: Kub Rolled, Annealed, Peeled
Nto: Dub, Tig, Hauv av
HARDNESS: Core: 30-45 HRC; Case: 58-62 HRC (Tom qab Carburizing)
FEATURE: Siab Impact Toughness + Hnav Resistant Nto
APPLICATION: Cua Turbine Bearings, Railway Bearings, Hnyav Gears
MOQ: 25 Tuj
Carburizing Bearing hlau(tseem hu ua Case Hardening Bearing Steel) yog tsim los rau cov ntawv thov uas tus qauv siab - carbon bearing steel (xws li 52100) yog nkig dhau. Los ntawm kev siv qis - carbon alloy (carbon ~ 0.20%) thiab muab nws rau aCarburizing (Case Hardening)txheej txheem, steel tsim atshwj xeeb dual qauv:
- Case (Surface):High carbon concentration, ua tiav siab hardness (58-62 HRC) rau kev hnav zoo heev.
- Lub hauv paus (Center):khaws cias low carbon toughness, tso cai rau cov kabmob kom nqus tau hnyav thiab cuam tshuam yam tsis muaj kev tawg.
Peb8620 (G20CrNiMo)thiab4320qibyog cov qauv kev lag luam rau kev tsim loj -cov kabmob loj siv hauvcua turbines, dov mills, thiab cov khoom siv miningnyob qhov twgkev muaj peev xwm nyob rau hauv kev cuam tshuam load tsis yog -negotiable.
Khoom Specifications & Qib sib npaug
Peb muab siab-kev huv huv carburizing steels nrog nruj tswj nruj hardenability bands (H-Band).
Table-1
Xaiv cov qib zoo raws li qhov xav tau ntawm lub zog tseem ceeb.
International Qib Comparison |
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| GB (Tuam Tshoj) | ASTM / AISI (USA) | DIN (Lub teb chaws Yelemees) | JIS (Nyiv) | Core Strength |
| G20CrNiMo | 8620 | 1.6523 (21NiCrMo2) | SIB 220 |
Nruab nrab Core Strength |
| G20Cr2Ni4 | 4320 | 1.6587 (18CrNiMo7-6) | SIB 420 |
Siab Core Strength |
| 20 nc3 | 3310 | 1.5752 (14 NiCr14) | SNC815 | Hnyav plaub ntug |
Table-2
Nickel thiab molybdenum yog ntxiv rau kev sib sib zog nqus hardenability thiab toughness.
Chemical Composition (MassFeem %) |
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| Qib | C | Cr | Ni | Mo | Mn |
| 8620 / G20CrNiMo | 0.17~0.23 | 0.40~0.70 | 0.40~0.70 | 0.15~0.25 | 0.60~0.95 |
| 4320 | 0.17~0.22 | 0.40~0.60 | 1.65~2.00 | 0.20~0.30 | 0.45~0.65 |
| 18CrNiMo7-6 | 0.15~0.21 | 1.50~1.80 | 1.40~1.70 | 0.25~0.35 | 0.50~0.90 |
Table-3
Loj txoj kab uas hla bar thiab forged rings rau hnyav kev lag luam.
Khoom Muag Ntau & Hom |
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| Yam khoom | Qhov Loj (mm) | Kev Xa Khoom | Hom kev siv |
| Round Bar | Dia: 16 - 800 | Kub Rolled / Forged / Peeled |
Pinions, Gears, Shafts |
| Forged nplhaib | OD: 300 - 3000 | Forged / Rough tig |
Slewing Bearings, Cua zog |
| Thaiv | Txiav txiav | Forged/milled |
Loj Bearing Vaj |
Key Features ibd Qhov Zoo
- Impact Resistance:Cov tub ntxhais mos mos, cov hlua khi tiv thaiv kev puas tsuaj tsis zoo thaum cov kabmob raug cuam tshuam rau kev poob siab tam sim ntawd (xws li, hauv pob zeb crusher lossis railway log).
- Deep Hardenability:Qib zoo li4320thiab18CrNiMo7-6xyuas kom meej tias cov ntaub ntawv carburized tau txais kev txhawb nqa los ntawm cov tub ntxhais muaj zog, txawm tias nyob hauv cov ntoo khaub lig loj - ntu (xws li cua turbine gears).
- Hnav Resistant Nto:Tom qab carburizing, qhov tawv tawv ncav cuag 60 HRC, muab kev hnav lub neej piv rau 52100 steel.
- Compressive Residual Stress:Cov txheej txheem hardening induces compressive kev nyuaj siab ntawm qhov chaw, uas ho txhim khoqaug zog lub neej.
Tej kev siv
Carburizing Bearing Steel yog tus qauv rau "Heavy & Shock" ib puag ncig:
Cua Zog
Main ncej bearings thiab gearbox bearings nyob rau hauv cua turbines (yuav tsum tau18CrNiMo7-6).
Railway
Tapered roller bearings rau tsheb ciav hlau wheelsets (axle bearings).
Mining & Kev tsim kho
Bearings nyob rau hauv pob zeb crushers, excavators, thiab vibrating screens.
Automotive
Differential gears thiab kis tau tus mob.
Rolling Mills
Plaub- kab cylindrical cov menyuam bearings rau steel zeb yob.
FAQ
Q1: Qhov txawv ntawm 8620 thiab 52100 bearing steel yog dab tsi?
A1: 52100 yog ib qho dhau los ntawm -cov hlau tawv (nyuaj tag nrho txoj hauv kev). Nws yog qhov zoo heev rau kev thauj khoom tsis sib xws tab sis tuaj yeem ua rau nkig nyob rau hauv kev cuam tshuam . 8620 yog rooj plaub- hardening steel (hard deg, soft core). Nws yog qhov zoo tshaj rau cov ntawv thov cuam tshuam nrog kev poob siab hnyav lossis misalignment.
Q2: Dab tsi yog qhov hardness ntawm 8620 tom qab kev kho cua sov?
A2: Tom qab carburizing thiab quenching, qhov saum npoo (cov ntaub ntawv) hardness yuav yog 58-62 HRC, thaum lub hauv paus hardness tseem softer, feem ntau 30-45 HRC (nyob ntawm seb qhov luaj li cas), muab toughness.
Q3: Koj puas tuaj yeem muab 18CrNiMo7-6?
A3: Yog lawm. 18CrNiMo7-6 (DIN 1.6587) yog European tus qauv kev ua haujlwm siab carburizing steel, dav siv hauv cua zog gearboxes. Peb muab nws rau hauv forged tuav thiab rings nrog EN 10204 3.1 ntawv pov thawj.
Q4: Puas yog carburizing steel weldable?
A4: Feem ntau, yog. Vim tias cov ntsiab lus carbon tsawg (~0.20%) hauv cov hlau hauv paus, carburizing steels xws li 8620 muaj qhov zoo dua weldability tshaj 52100. Txawm li cas los xij, vuam yuav tsum tau ua ua ntej kev kho cua sov carburizing.
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