Cov khoom ntawm graphite bearings

Cov khoom ntawm graphite bearings

1. Zoo tshuaj stability
Graphite yog cov khoom siv tshuaj lom neeg ruaj khov, thiab nws cov tshuaj lom neeg ruaj khov tsis yog qis dua cov hlau muaj txiaj ntsig. Nws solubility hauv molten nyiaj tsuas yog 0.001% - 0.002%.Graphiteyog insoluble nyob rau hauv cov organic los yog inorganic kuab tshuaj. Nws tsis corrode thiab yaj nyob rau hauv feem ntau acids, bases thiab ntsev.
2. Kub kub tsis kam ntawm graphite bearing
Los ntawm kev sim, qhov kev pab cuam kub ntawm cov pa roj carbon qib bearings tuaj yeem ncav cuag 350 ℃; Hlau graphite bearing kuj yog 350 ℃; Electrochemical graphite qib bearing tuaj yeem ncav cuag 450-500 ℃ (hauv qab lub teeb), nws lub cev thiab cov khoom siv kho tshuab tsis hloov pauv, thiab nws qhov kev pabcuam kub tuaj yeem ncav cuag 1000 ℃ hauv lub tshuab nqus tsev lossis kev tiv thaiv huab cua.
3. Kev ua haujlwm zoo ntawm tus kheej lubricating
Graphite bearingmuaj kev ua tau zoo ntawm tus kheej lubricating rau ob qho laj thawj. Ib qho laj thawj yog vim li cas cov pa roj carbon atoms hauv graphite lattice tau teem rau ntawm txhua lub dav hlau hauv cov duab hexagonal tsis tu ncua. Qhov kev ncua deb ntawm cov atoms yog nyob ze, uas yog 0.142 nm, thaum qhov kev ncua deb ntawm lub dav hlau yog 0.335 nm, thiab lawv staggered ntawm ib leeg nyob rau hauv tib txoj kev. Lub dav hlau thib peb rov ua txoj haujlwm ntawm thawj lub dav hlau, lub dav hlau thib plaub rov ua haujlwm ntawm lub dav hlau thib ob, thiab lwm yam. Nyob rau hauv txhua lub dav hlau, lub zog khi ntawm cov pa roj carbon atoms muaj zog heev, thaum qhov kev ncua deb ntawm cov dav hlau loj, thiab van der Waals quab yuam ntawm lawv tsis muaj zog heev, yog li nws yooj yim tawm thiab xaub ntawm cov khaubncaws sab nraud povtseg, uas yog qhov laj thawj tseem ceeb. yog vim li cas graphite cov ntaub ntawv muaj nws tus kheej-lubricating zog.
Qhov thib ob yog vim li cas cov ntaub ntawv graphite muaj zog adhesion nrog cov ntaub ntawv hlau feem ntau, yog li cov graphite exfoliated tau yooj yim ua raws li cov hlau nto thaum sib tsoo nrog hlau, tsim ib txheej ntawmgraphite zaj duab xis, uas dhau los ua kev sib txhuam ntawm graphite thiab graphite, yog li txo qhov hnav thiab kev sib txhuam coefficient, Qhov no kuj yog ib qho ntawm cov laj thawj vim li cas carbon graphite bearings muaj kev ua tau zoo ntawm tus kheej lubricating thiab kev ua haujlwm tiv thaiv.
4. Lwm yam khoom ntawm graphite bearing
Piv nrog rau lwm yam bearings,graphite bearingskuj muaj cov thermal conductivity, tsis tshua muaj coefficient ntawm linear expansion, ceev ceev cua txias thiab kub tsis kam thiab lwm yam.