Dab tsi yog qhov dawb aluminium oxide?
Dawb aluminium oxide, tseem hu ua dawb corundum , yog dawb los yog me ntsis lub teeb liab amorphous hmoov ua los ntawm siab purity alumina tom qab kub melting thiab ceev txias thiab solidification. Nws muaj cov hardness siab, muaj zog hnav tsis kam, tshuaj zoo stability, kub tsis kam, me me thermal expansion coefficient thiab lwm yam ntxwv. Cov yam ntxwv no ua rau dawb corundum dav siv hauv kev lag luam abrasives.
Dab tsi yog cov ntawv thov ntawm dawb aluminium oxide hauv cov cuab yeej abrasive?
Raws li ib qho ntawm cov khoom siv tseem ceeb ntawm cov cuab yeej abrasive, corundum dawb yog siv dav hauv kev tsim cov hlau sib tsoo, txiav daim hlau, sib tsoo taub hau, sib tsoo rods thiab lwm yam khoom siv abrasive. Nws cov hardness siab thiab hnav tsis kam ua rau cov cuab yeej sib tsoo muaj lub neej ua haujlwm ntev thiab kev sib tsoo ruaj khov. Tsis tas li ntawd, dawb corundum kuj tseem siv tau los tsim precision abrades, xws li daim iav abrades thiab ultra-fine abrades, kom tau raws li kev sib tsoo cov kev xav tau ntawm siab precision thiab siab tiav.
Dab tsi yog qhov zoo ntawm dawb aluminium oxide hauv cov cuab yeej abrasives?
High hardness thiab hnav tsis kam: lub hardness ntawm dawb corundum yog thib ob tsuas yog pob zeb diamond, uas ua rau nws muaj siab hnav tsis kam raws li abrasive thiab muaj peev xwm tswj tau qhov ntse thiab precision ntawm cov cuab yeej abrasive rau lub sijhawm ntev.
Kev ruaj ntseg tshuaj zoo: dawb corundum muaj qhov ua haujlwm zoo rau feem ntau cov kua qaub thiab cov hauv paus, yog li nws tsis cuam tshuam rau cov tshuaj corrosion thaum sib tsoo, ua kom muaj kev sib tsoo zoo thiab kev pabcuam lub neej ntawm cov cuab yeej sib tsoo.
High thermal stability: Lub siab melting point ntawm dawb corundum ua rau nws zoo tagnrho rau kev sib tsoo kub, uas tuaj yeem tswj kev sib tsoo ruaj khov hauv qhov kub thiab txias.
Kev nyab xeeb ib puag ncig: Dawb corundum tsis muaj tshuaj lom thiab tsis muaj mob, tsis muaj cov khoom siv hluav taws xob, thiab ua tau raws li cov kev cai ntawm kev tiv thaiv ib puag ncig thiab kev tsim khoom nyab xeeb.
Nrog nws cov hardness siab, muaj zog hnav tsis kam, zoo tshuaj stability thiab ntau lwm yam zoo,dawb aluminium oxideoccupies ib txoj hauj lwm tseem ceeb hauv kev lag luam abrasive. Nyob rau hauv lub neej yav tom ntej, nrog kev txhim kho txuas ntxiv thiab thev naus laus zis tshiab ntawm kev tsim khoom lag luam, daim ntawv thov kev cia siab ntawm corundum dawb yuav dav dua. Peb cia siab tias dawb corundum ua lub luag haujlwm ntau dua hauv kev lag luam abrasive thiab pab txhawb rau kev tsim cov khoom lag luam.
