Cov yam ntxwv ntawm graphite bearings

Cov yam ntxwv ntawm graphite bearings

1. Kev ruaj khov tshuaj zoo
Graphite yog ib yam khoom siv ruaj khov uas muaj tshuaj lom neeg, thiab nws cov tshuaj ruaj khov tsis qis dua li cov hlau muaj nqis. Nws cov solubility hauv cov nyiaj molten tsuas yog 0.001% - 0.002%.Cov xim avtsis yaj hauv cov organic lossis inorganic solvents. Nws tsis xeb thiab yaj hauv feem ntau cov acids, bases thiab ntsev.
2. Kev kub siab ua haujlwm ntawm graphite bearing
Los ntawm kev sim, qhov kub ntawm cov bearings carbon dav dav tuaj yeem ncav cuag 350 ℃; cov hlau graphite bearing kuj yog 350 ℃; cov electrochemical graphite qib bearing tuaj yeem ncav cuag 450-500 ℃ (nyob rau hauv lub teeb load), nws lub cev thiab cov khoom siv kho tshuab tseem tsis hloov pauv, thiab nws qhov kub ntawm kev pabcuam tuaj yeem ncav cuag 1000 ℃ nyob rau hauv lub tshuab nqus tsev lossis huab cua tiv thaiv.
3. Kev ua haujlwm zoo ntawm tus kheej lubricating
Cov kabmob graphitemuaj kev ua tau zoo ntawm tus kheej lubricating rau ob qho laj thawj. Ib qho ntawm cov laj thawj yog tias cov pa roj carbon atoms hauv lub graphite lattice tau teeb tsa rau ntawm txhua lub dav hlau hauv ib lub hexagonal zoo li qub. Qhov deb ntawm cov atoms yog ze, uas yog 0.142 nm, thaum qhov deb ntawm cov dav hlau yog 0.335 nm, thiab lawv tau staggered los ntawm ib leeg hauv tib qho kev coj. Lub dav hlau thib peb rov ua qhov chaw ntawm thawj lub dav hlau, lub dav hlau thib plaub rov ua qhov chaw ntawm lub dav hlau thib ob, thiab lwm yam. Hauv txhua lub dav hlau, lub zog khi ntawm cov pa roj carbon atoms muaj zog heev, thaum qhov deb ntawm cov dav hlau loj, thiab lub zog van der Waals ntawm lawv tsis muaj zog heev, yog li nws yooj yim tawm thiab swb ntawm cov khaubncaws sab nraud povtseg, uas yog qhov laj thawj tseem ceeb vim li cas cov ntaub ntawv graphite muaj cov khoom ua rau tus kheej lubricating.
Qhov laj thawj thib ob yog tias cov ntaub ntawv graphite muaj zog lo rau feem ntau cov ntaub ntawv hlau, yog li cov graphite exfoliated tuaj yeem yooj yim lo rau ntawm qhov chaw hlau thaum sib tsoo nrog hlau, tsim ib txheej ntawmzaj duab xis graphite, uas dhau los ua qhov sib txhuam ntawm graphite thiab graphite, yog li ntawd txo qhov hnav thiab kev sib txhuam coefficient, Qhov no kuj yog ib qho ntawm cov laj thawj vim li cas cov pa roj carbon graphite bearings muaj kev ua tau zoo heev thiab kev ua haujlwm tiv thaiv kev sib txhuam.
4. Lwm yam khoom ntawm graphite bearing
Piv nrog rau lwm cov bearings,cov kabmob graphitekuj muaj cov thermal conductivity siab, cov coefficient qis ntawm linear expansion, txias sai thiab kub tsis kam thiab lwm yam.