Cov kav dej lag luam uas xa cov khoom siv abrasive—xws li hmoov thee, cov tshauv ya, cov ntxhia slurry, cement clinker, thiab cov tshuaj lom neeg—ntsib teeb meem tas li: kev hnav ntawm phab ntsa kav dej ua rau puas tsuaj ua ntej lub sijhawm, lub sijhawm tsis ua haujlwm, thiab cov nqi kho mob nce siab. Cov kav dej carbon steel ib txwm muaj, txawm tias thaum tawv lossis sib xyaw, feem ntau muaj lub neej ua haujlwm ntsuas hauv ntau lub hlis hauv qab cov xwm txheej hnyav. Cov kav dej alumina ceramic uas tiv taus kev hnav (tseem hu ua cov kav dej sib xyaw ua ke ceramic) daws qhov teeb meem no los ntawm kev siv cov khoom siv engineering: kev sib xyaw ua ke qhov nyuaj heev thiab kev tsis muaj tshuaj lom neeg ntawm cov khoom siv alumina ceramics uas muaj kev ntshiab siab nrog rau qhov tawv ntawm cov hlau sab nraud.
Alumina (Al₂O₃) ceramics yog cov khoom siv ceramics uas siv dav tshaj plaws rau kev tiv thaiv kev hnav. Lawv cov kev ua tau zoo tshaj plaws yog los ntawm α-Al₂O₃ hexagonal close-packed crystal structure, uas ua rau cov khoom siv no muaj zog thiab muaj zog heev.
Cov kav dej ceramic uas tiv taus alumina, tsim los ntawm cov khoom siv siab-purity aluminium oxide (Al₂O₃) liners sib txuas nrog lub plhaub hlau, muab kev tiv thaiv zoo rau kev hnav abrasive, kev cuam tshuam erosion, thiab tshuaj corrosion. Nrog Mohs hardness ntawm 9, compressive zog tshaj 850 MPa, thiab lub neej ua haujlwm 10 txog 30 npaug ntev dua li cov kav hlau ib txwm muaj, cov kav dej sib xyaw no tau dhau los ua tus qauv kev lag luam rau pneumatic conveying systems hauv kev tsuas, kev tsim hluav taws xob, kev tsim cement, kev tsim hlau, thiab kev ua tshuaj lom neeg.
Lub sijhawm tshaj tawm: Tsib Hlis-18-2026