Cov Hose Roj Hmab Alumina Uas Tiv Thaiv Tau: Cov Qauv, Cov Khoom, thiab Cov Ntawv Siv

Cov roj hmab alumina ceramic uas tsis hnav tau yog cov khoom siv yeeb nkab lag luam uas tsim los ntawm kev sib xyaw cov vuas ceramic alumina uas muaj zog heev nrog cov roj hmab matrix uas yooj ywm los ntawm cov txheej txheem vulcanization. Cov alumina ceramic uas muab tso rau hauv (feem ntau nrog cov ntsiab lus Al₂O₃ ntawm ≥92%) muaj qhov nyuaj heev (Rockwell hardness HRA ≥88), qhia txog kev hnav tsis kam ntau dua kaum npaug ntawm cov hlau cam khwb cia uas muaj chromium siab. Cov txheej roj hmab sab nraud muab cov hose nrog kev ywj pheej zoo heev thiab cov khoom kaw, ua rau nws khoov thiab nqus tau cov kev co hauv qab cov xwm txheej ua haujlwm nyuaj. Cov qauv tsim no ua ke zoo qhov kev hnav tsis kam ntawm cov ceramics nrog cov khoom cushioning ntawm roj hmab, ua rau nws tsim nyog rau kev thauj mus los ntawm cov xov xwm hnav tsis kam hauv kev lag luam xws li kev khawb av, kev tsim hluav taws xob, thiab cement.

Hais txog cov kev ua tau zoo, cov lus qhia txog kev ua haujlwm ntawm cov khoom no sib txawv raws li qhov yuav tsum tau ua. Cov txheej ceramic feem ntau muaj qhov ceev ntawm ≥3.6 g / cm³ thiab lub zog khoov tshaj 290MPa. Txawm hais tias nws tuaj yeem tiv taus qhov kub siab txog li 1400 ° C, qhov kub ua haujlwm ntev feem ntau tswj tau ntawm -30 ° C thiab 150 ° C hauv kev ua haujlwm tas mus li vim yog qhov txwv kub ntawm cov txheej roj hmab. Cov lus qhia txog cov hose yog hloov pauv tau, nrog rau cov kab uas hla nominal ntawm 25mm txog 1200mm, ib qho ntev txog li 20 meters, thiab qib siab ua haujlwm ntawm 1MPa thiab 4MPa. Ntxiv mus, cov vuas ceramic feem ntau tsim los ua cov duab hexagonal lossis voj voog thiab tau teeb tsa thiab vulcanized kom ntseeg tau tias phab ntsa sab hauv du nrog cov kua dej tsawg.

Cov roj hmab alumina ceramic uas tsis yooj yim hnavsiv dav hauv cov khoom khov-kua-roj ntau theem ntws cov khoom siv thauj khoom. Hauv cov chaw tsim hluav taws xob thee, lawv siv rau kev thauj khoom ntawm cov tshauv ya thiab cov thee pulverized. Hauv kev lag luam hlau, lawv siv rau kev txhaj cov thee pulverized thiab thauj cov hlau ore concentrate. Hauv kev lag luam tshuaj lom neeg, siv qhov kev tiv thaiv corrosion ntawm ceramics, cov hoses no tuaj yeem thauj cov corrosive slurries uas muaj cov kua qaub, alkalis, thiab ntsev. Tsis tas li ntawd, hauv kev khawb chaw nres nkoj thiab kev ua haujlwm twj tso kua mis, cov kav dej no, nrog nws ob qho txiaj ntsig ntawm kev tiv thaiv kev cuam tshuam thiab kev tiv thaiv hnav, ua rau lub voj voog txij nkawm thiab lub neej kev pabcuam ntawm cov kav dej, yog li txo cov nqi ua haujlwm thiab kev txij nkawm tag nrho.