qhov sib txawv ntawm Low-Tub Bearings thiab High-Tub Bearings
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| Parameter | Tsawg-Tub Bearings | High -Tub Bearings |
|---|---|---|
| Kev khiav hauj lwm qhov kub thiab txias | -200℃rau -40 degree | 120℃rau 1000 degree |
| Core Performance Requirements | Tsawg-kub toughness, tiv thaiv- brittle puas | Siab -kub hardness, oxidation kuj |
| Kev Pabcuam Lub Neej Sensitivity | Sensitive rau lubricant solidification | rhiab heev rau lubricant decomposition thiab cov khoom oxidation |
Tsawg-cov kabmob kub thiab siab-cov kabmob kub yog ob hom kabmob tshwj xeeb uas tsim los rau qhov kub thiab txias ib puag ncig, nrog rau qhov sib txawv hauv covxaiv cov khoom siv, tsim qauv, lubrication systems, thiab daim ntawv thov scenarios.
1. Cov khoom sib txawv
Tsawg-kub bearingsCov ntaub ntawv hauv paus yog feem ntausiab -purity chrome steel (piv txwv li, GCr15)los yogstainless hlau (piv txwv li, 440C). Cov ntaub ntawv no tuav zoo heev hardness, seem stability, thiab cuam tshuam toughness ntawm qis kub (feem ntau xws li los ntawm-200℃rau -40 degree). Rau ultra-qis- qhov kub thiab txias (piv txwv li, qis dua -100 degree), bearing rings thiab dov cov ntsiab lus yuav siv tautooj liab alloyslos yogtitanium alloyskom tsis txhob nkig tawg los ntawm qhov kub thiab txias.
High -kub bearingsLawv siv cov khoom siv cua sov- tiv taus oxidation thiab deformation nyob rau hauv qhov kub thiab txias (feem ntau saum toj no120 degree, mus txog 1000℃rau cov qauv tshwj xeeb). Cov ntaub ntawv uas muaj xws li:
Thaum tshav kub kub-resistant bearing steel(piv txwv li, Cr4Mo4V): Haum rau qhov kub thiab txias hauv qab 350 degree, nrog zoo hnav tsis kam thiab kub stability.
Cov khoom siv ceramic(piv txwv li, silicon nitride Si₃N₄, zirconia ZrO₂): Muaj feem xyuam rau qhov kub siab tshaj 500 degree, featuring low thermal expansion, high hardness, and corrosion resistance.
High -kub alloys(piv txwv li, Inconel series): Siv hauv aerospace thiab lwm qhov chaw rau ultra-siab- qhov kub thiab txias.
2. Lubrication System Qhov txawv
Lubrication yog ib qho tseem ceeb rau kev coj tus kheej nyob rau hauv qhov kub thiab txias, raws li cov pa roj nplua nyeem tsis muaj txiaj ntsig hauv huab cua txias lossis cua sov.
Tsawg-kub bearingsLubricants yuav tsum tau zoo heev uas tsis muaj -kub fluidity los tiv thaiv solidification thiab xyuas kom meej lubrication. Cov kev xaiv dav dav yog:
Synthetic hydrocarbon lubricating rojlos yogsilicone roj: Khaws viscosity ntawm qhov kub thiab txias thiab tsis txhob icing.
Tsawg-kub roj(piv txwv li, polyurea- roj raws li cov roj): Resistant hardening ntawm -60℃thiab muab lubrication mus sij hawm ntev.
High -kub bearingsLubricants yuav tsum tiv thaiv thermal decomposition thiab oxidation. Cov kev xaiv ib txwm muaj xws li:
High -kub roj(piv txwv li, lithium complex grease, fluorine grease): Haum rau qhov kub thiab txias hauv qab 300 degree, muaj zog adhesion thiab thermal stability.
Khoom lubricants(piv txwv li, graphite, molybdenum disulfide): Siv rau cov bearings ua hauj lwm siab tshaj 500 degree, raws li cov kua lubricants evaporate los yog decompose ntawm xws li kub.
Cov roj lubricationlos yogcirculating roj lubrication: Siv nyob rau hauv hnyav -lub luag haujlwm siab- cov khoom siv kub kom tshem tawm cov cua sov thaum lubricating.
3. Cov qauv tsim qhov sib txawv
Tsawg-kub bearingsTsom ntsoov rauseem stabilitylos tiv thaiv kev hloov pauv los ntawm thermal contraction. Sab hauv clearance feem ntau yog tsim los ualoj tshaj tus qauv bearings, compensating rau lub shrinkage ntawm rings thiab dov ntsiab ntawm qhov kub thiab txias, yog li tsis txhob jamming. Cov ntsaws ruaj ruaj feem ntau yog ua los ntawmlow-kub-cov roj hmab tiv taus (piv txwv li, nitrile roj hmab NBR)los yog hlau ntsaws ruaj ruaj los tiv thaiv kev nkag ntawm qis-kub tawm (piv txwv li, kua nitrogen, kua oxygen).
High -kub bearingsUa ntejkub dissipationthiaboxidation tsis kam. Cov yam ntxwv muaj xws li:
Loj sab hauv clearance kom haum raws li thermal expansion ntawm cov khoom nyob rau hauv high kub.
Qhib- hom qauv (tsis muaj cov ntsaws ruaj ruaj) lossis cov ntsaws ruaj ruaj yog nyiam, vim tias cov roj hmab ntsaws ruaj ruaj yuav muaj hnub nyoog thiab tawg hauv qhov kub thiab txias.
Qee qhov siab -kub bearings txais yuav acais- hom tsimkom yooj yim installation thiab txij nkawm nyob rau hauv siab - cov khoom kub.
4. Daim ntawv thov Scenario sib txawv
Tsawg-kub bearingsFeem ntau siv rau hauv cov khoom siv ua haujlwm hauv qhov chaw txias, xws li:
Cryogenic cia thiab cov khoom siv thauj mus los (piv txwv li, kua nitrogen tank, LNG tsheb).
Polar tshawb nrhiav tshuab, qis- ntsuas kub ntsuas.
Cov cuab yeej siv dav hlau (xws li, foob pob hluav taws ua kua roj cav).
High -kub bearingsDav siv nyob rau hauv siab - qhov kub thiab txias ua haujlwm, suav nrog:
Metallurgical khoom (xws li, dov mills, nruam casting machine).
Cav tshuab (piv txwv li, automotive engines, aircraft turbines).
Kev lag luam rauv, siab - cov khoom siv ziab kom qhuav, thiab cov khoom tsim hluav taws xob thermal.
