ZTA (zirconia-toughened alumina) hnav- cov ceramics resistant feem ntau yog siv rau hauv daim ntawv thov uas yuav tsum muaj ob qho tib si hardness thiab cuam tshuam tsis kam- ntshiab alumina yog tawv tab sis nkig, thaum ntshiab zirconia yog tawv tab sis kim; ZTA ntaus qhov zoo tagnrho sib npaug ntawm ob. cov
Tshwj xeeb, hom kev siv hauv qab no yuav raug muab ua ntej rau nws siv:
Siab - cuam tshuam, siab - poob tej yam kev mob: qhov twg cov khoom particle loj loj, poob siab yog qhov tseem ceeb, thiab kev cuam tshuam quab yuam muaj zog- xws li hauv chutes, hoppers, feed cones, thiab crusher liners. Ordinary alumina ceramics yog nquag tawg nyob rau hauv xws li kev cuam tshuam, whereas ZTA siv cov nyhuv toughening ntawm zirconia theem hloov mus nqus lub zog, ua rau lub neej kev pab cuam ntau zaus ntev dua li siab -chrome cam khwb cia hlau. cov
Ob qhov yuav tsum tau ua ntawm kev hnav tsis kam thiab siab tawv: Cov khoom xws li kev faib cov log hauv siab - nrawm dav hlau mills, ntws qhov chaw hauv cov twj loj thiab li qub, thiab cov hmoov xa cov kav dej nyob rau hauv qhov kev cuam tshuam siab yuav tsum tiv thaiv kev txiav los ntawm cov ntaub ntawv nyuaj thaum tswj kom muaj zog dabtsi yog khoov txaus. ZTA ua tiav lub zog dabtsi yog khoov ntawm 600-1200 MPa thiab muaj pob txha toughness kwv yees li ob npaug ntawm cov ntshiab alumina. cov
Cov xwm txheej nrog cov khoom siv tsis tu ncua thiab cov nqi hloov pauv siab: Hauv cov khoom siv thauj khoom thiab pulverizing tshuab ntawm kev lag luam xws li thermal zog, steel, mining, thiab cement, cov khoom siv hlau tsoos hnav sai sai thiab yuav tsum tau hloov ntau zaus. ZTA liners muab kev pab lub neej ntev dua li cov pa alumina ceramics, uas ua rau cov nqi qis dua suav nrog kev poob qis thiab cov nqi hloov pauv. cov
Cov cheeb tsam uas muaj qhov kub thiab txias hloov pauv: ZTA muaj cov thermal poob siab zoo dua li cov ntshiab alumina, ua kom nws tuaj yeem tiv taus qhov kub thiab txias hloov tsis tau tawg, ua rau nws tsim nyog rau cov cuab yeej ua haujlwm kub hloov pauv. cov
Rau tus nqi- xaiv tau zoo: Yog tias cov kev ua haujlwm cuam tshuam nrog kev hnav hnyav tab sis kev siv nyiaj tsawg, ZTA muab cov kev daws teeb meem sib npaug- nws qhov kev ua tau zoo yog ze rau ntawm zirconia ceramic, tab sis tus nqi qis dua cov zirconia ntshiab. Qhov no yog vim li cas ntau lub tuam txhab mining hauv Tebchaws Europe thiab Asmeskas siv nws. cov
Lus Cim: Txawm hais tias ZTA yog tawv, nws qhov hardness yog me ntsis qis dua cov ntshiab alumina (kwv yees li HRA 88-90). Yog tias cov kev khiav hauj lwm muaj kev cuam tshuam tsis tshua muaj - cuam tshuam, siab - abrasive hnav, ntshiab alumina liner yuav raug nqi ntau dua - zoo. ZTA yog qhov zoo dua rau cov ntawv thov cuam tshuam nrog kev puas tsuaj thiab cuam tshuam.
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