Cov vuas ceramic alumina uas tsis yooj yim hnavyog cov khoom siv ua los ntawm cov khoom siv ua los ntawm cov khoom siv ua los ntawm cov khoom siv aluminium oxide (Al₂O₃) uas muaj cov khoom ntshiab heev los ntawm kev nias thiab kev sib xyaw ua ke ntawm qhov kub thiab txias. Lawv cov ntsiab lus Al₂O₃ feem ntau yog 92%, 95%, lossis 99%, nrog rau qhov ceev ntawm 3.60 g/cm³ txog 3.90 g/cm³ thiab kev nqus dej qis dua 0.01%. Cov khoom siv no muaj qhov nyuaj siab thiab ruaj khov tshuaj lom neeg zoo, tsim nyog rau cov xwm txheej kev lag luam uas muaj kev cuam tshuam, kev sib txhuam swb, thiab cov xov xwm corrosive.
Cov kev ntsuas kev ua tau zoo ib txwm muaj: Mohs hardness ntawm 9, Rockwell hardness HRA 85-90, thiab hnav tsis kam 20-30 npaug ntawm cov hlau carbon ib txwm muaj (ntim hnav ≤0.05 cm³ ib qho ASTM G65 xuab zeb qhuav roj hmab log xeem). Lub zog flexural ncav cuag 250-350 MPa, thermal conductivity kwv yees li 25-30 W / (m · K), thiab qhov kub ua haujlwm ntau ntawm -50 ° C txog 1200 ° C (nyob ntawm qib tshwj xeeb). Cov ntaub ntawv no ua kom ntseeg tau tias muaj kev ntseeg siab mus sij hawm ntev hauv qab kev hnav siab thiab kub siab.
Cov khoom no siv dav rau kev tiv thaiv kev hnav hauv cov khoom siv tseem ceeb thoob plaws cov cement, hlau, fais fab, kev khawb av, thiab kev lag luam thee, xws li cov hniav cais, cov chutes, cov kav dej, cov cua daj cua dub, thiab cov ntaub thaiv hopper. Cov txheej txheem teeb tsa suav nrog epoxy resin bonding, bolting, lossis welding (siv cov vuas ceramic ua ntej drilled ua ke nrog cov roj hmab / hlau phaj). Cov tuab txheem yog txij li 5 hli txog 25 hli; cov vuas feem ntau suav nrog 10 hli × 10 hli, 20 hli × 20 hli, thiab 50 hli × 50 hli square lossis hexagonal duab rau kev txiav thiab teeb tsa yooj yim ntawm qhov chaw.
Kev siv cov vuas ceramic alumina uas tiv taus kev hnav ua rau lub neej ua haujlwm ntawm cov khoom siv ntev dua thiab txo lub sijhawm tsis ua haujlwm rau kev saib xyuas. Cov ntaub ntawv hauv daim teb qhia tau tias nyob rau hauv cov xwm txheej ua haujlwm zoo sib xws, cov ntaub pua plag ceramic kav ntev dua 3-8 npaug dua li cov hlau manganese siab lossis cov hlau alloy uas tiv taus kev hnav. Cov khoom tsis yog hlau nplaum, tiv taus acid / alkali corrosion (tshwj tsis yog hydrofluoric acid thiab kub concentrated alkali), thiab tsis ua rau cov ntaub ntawv paug. Kev xaiv yuav tsum txiav txim siab Al₂O₃ cov ntsiab lus thiab cov vuas tuab raws li lub kaum sab xis tiag tiag, qhov loj me ntawm cov khoom me me, thiab qhov kub kom ua tiav qhov sib npaug ntawm kev ua tau zoo thiab tus nqi.
Lub sijhawm tshaj tawm: Plaub Hlis-25-2026