Ceramic Lub xub pwg Bushing

Ceramic lub xub pwg bushing feem ntau muaj cov yam ntxwv ntawm siab kub tiv thaiv, tiv taus corrosion thiab hluav taws xob rwb thaiv tsev. Cov ntaub ntawv cov khoom ntawm cov nplais ceramic washer suav nrog alumina, zirconia, silicon carbide, silicon nitride thiab boron nitride, tshwj tsis yog rau boron nitride, uas yog mos, tsis tshua muaj cov khoom tawv, Mohs hardness ntawm lwm cov ntaub ntawv ceramic yog siab li 8.0-9.5 , qhov no yog vim li cas lawv cov ntaub ntawv coj zoo hnav-ua si. Vim tias ultra-siab hardness ntawm ceramics, cov cuab yeej pob zeb diamond tuaj yeem tsuas yog xaiv rau kev ua cov ceramic. Cov kev sib tw tshwj xeeb thiab cov txheej txheem yuav tsum tau txais cov duab kos thiab cov qib siab, thiab tus nqi kuj tseem yuav nce ntau. Cov hauv qab no yog cov lus qhia luv luv ntawm ntau cov ntaub ntawv ntawm ceramic flanged bushings.

Alumina Lub Xub Pwg Bushing

Alumina (Aluminium Oxide) yog cov khoom siv feem ntau ntawm cov khoom siv ceramic, thiab nws tseem yog cov khoom siv kuj zoo nkauj. Qhov ntau yam khoom siv ntawm aluminium oxide yog qhov sib npaug. Aluminium oxide ceramics muaj ntau yam ntawm kev xaiv purity, qhov tshwm sim feem ntau yog 95% Al2O3 thiab 99% Al2O3. Raws li cov khoom tiav qib siab tshaj plaws ntawm cov khoom siv ceramic, cov txheej txheem ntau lawm ntawm alumina yog ntau ntau yam. Yog tias tsis muaj cov kev cai tshwj xeeb, cov ntaub ntawv alumina tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm daim ntawv thov.

Ir Zirconia Xub Bushing

Cov yam ntxwv ntawm zirconia yog hnav tsis kam thiab rwb thaiv tsev. Nyob rau hauv qhov kub thiab txias ib puag ncig, zirconium oxide tau hnav zoo dua li aluminium oxide, thiab nws tseem tuaj yeem tswj hluav taws xob zoo nyob hauv ib puag ncig qis dua 500 degrees Celsius. Tsis tas li ntawd, cov txheej txheem elastic thiab thermal expansion coefficient ntawm zirconium dioxide ceramics zoo ib yam li cov hlau, yog li nws muaj peev xwm ua ke nrog cov hlau ua cov txheej txheem ua haujlwm, thiab yuav tsis ua kom puas lossis tawg vim muaj qhov tsis xws ua haujlwm thermal. Thaum kawg, lub thermal conductivity ntawm zirconium oxide yog tsawg heev, tsuas yog 2.2 W / mK, yog li nws tseem tuaj yeem ua lub luag haujlwm hauv kev rwb thaiv tsev kub nyob rau hauv cov xwm txheej ntawm kev ua kom hnav tsis kam thiab hluav taws xob rwb thaiv tsev. Qhov no yog tus yam ntxwv uas feem ntau lwm qhov ceramics tsis tuaj yeem muaj.

Icon Silicon Carbide Lub Hnyav Bushing

Silicon carbide ceramic yog cov pob zeb ua kom muaj zog nrog covalent cov ntawv cog lus muaj zog thiab muaj qhov tawv uas tshaj li uas muaj alumina, zirconia thiab silicon nitride. Nws muaj cov yam ntxwv ua tau zoo, lub zog-siab dabtsi yog khoov lub zog, zoo heev oxidation tsis kam, zoo corrosion kuj, siab coj kuj thiab tsis tshua muaj kev sib txhuam, nws lub zog kub tau tswj tau txog 1,400 ℃, nws yog qhov zoo tshaj plaws kub zog lub zog ntawm cov ceramic cov khoom siv, thiab nws cov oxidation tsis kam kuj tseem yog qhov zoo tshaj plaws ntawm txhua qhov tsis muaj oxide ceramics. Hauv tshwj xeeb, silicon carbide ceramics yog qhov muaj zog tiv thaiv rau kev swb zawv zawg. Txawm li cas los xij, hais txog hluav taws xob rwb thaiv tsev ua haujlwm, silicon carbide yog cov khoom siv hluav taws xob, yog li nws tsis tuaj yeem siv ua hluav taws xob insulating cov khoom.

Icon Silicon Nitride Lub Hauv Paus Tsheb

Cov khoom siv Silicon nitride (Si3N4) muaj lub zog me me thermal expansion coefficient thiab muaj zog tiv rau qhov kub thiab txias. Nws lub zog tuaj yeem tswj hwm mus rau qhov kub siab txog 1,200 ° C yam tsis muaj kev cuam tshuam. Nws muaj lub zoo thermal poob siab stability thiab zoo tsis kam mus txias thiab thermal shocks. Txawm tias nws yog rhuab mus txog 1,000 ° C thiab txias sai, nws yuav tsis tawg, thiab nws muaj cov tshuaj tiv thaiv zoo corrosion. Nws tuaj yeem tiv thaiv yuav luag txhua qhov sib xyaw ua ke cov kua qaub thiab cov kua dej qab zib cov kua hauv qab 30%. Nws yog cov khoom siv high-insulating hluav taws xob.

Should Boron Nitride Lub Lwg Hniav

Daim ntawv thov tseem ceeb ntawm h-BN hexagonal boron nitride ceramic sab saum toj lub kaus mom washer yog cov khoom tivthaiv ntawm lub tshuab nqus tsev high-temperature. H-BN cov khoom yog lub teeb nyob hauv kev ntxhib los mos. Txawm hais tias nws lub zog thiab hnav tsis kam yog qhov tsis zoo, nws yog qhov tsim nyog raws li qhov ntsuas hluav taws xob thiab tiv thaiv qhov kub thiab txias nyob hauv qhov cub nqus cua sov siab. Hex BN ceramic sab saum toj lub kaus mom ntxhua khaub ncaws muaj peev xwm tiv taus txog li 2,000 degrees Celsius, thiab BN muaj qhov ua tau zoo tshaj qhov kub tsis kam, yog li yuav tsis muaj cov kab nrib pleb los ntawm kev hloov pauv hauv qhov kub thiab poob.

Kev Sib Piv Yooj Yim ntawm Ceramics, Metals thiab Polymers

Cim npe nrov: ceramic lub xub pwg bushing, Tuam Tshoj, cov chaw muag khoom, chaw tsim khoom