Izinto zobumba, ikakhulukazi zibhekisela ezitsheni zobumba zezimboni noma ezitsheni zobumba ezithuthukisiwe, zisetshenziswa emikhakheni eyahlukene yezimboni, lapho amandla omshini kanye nokumelana namandla angaphandle (njengokugqwala) kuyizidingo eziyinhloko zokusebenza. Ukumelana nokugqwala kuyinkomba yokusebenza eyinhloko ukukala izinto zobumba. Ngokuvamile abantu basebenzisa ubulukhuni ukwahlulela ukumelana nokugqwala kanye namandla ezinto zobumba ze-alumina. Okusho ukuthi, uma ubulukhuni buphakeme, kulapho ukumelana nokugqwala kuba ngcono khona. Ngakho-ke ungawahlola kanjani amapharamitha obulukhuni bezinto zobumba ezimelana nokugqwala?
Ukuqina kungenye yezimpawu ezibaluleke kakhulu futhi ezivame ukulinganiswa ku-alumina ceramics. Kungachazwa njengesilinganiso sokucindezeleka kwesivuno sanoma iyiphi i-ceramic noma impahla. Ukuqina kuveza ukumelana kwe-ceramic ekuqhekekeni, ekuguqukeni, ekuqineni nasekufudukeni. Ngokuvamile, izindlela ze-Vickers ne-Knoop zisetshenziswa kabanzi ekuhlolweni kokuqina kwe-ceramics. Indlela ye-Vickers iyona evame kakhulu. Ilinganisa ubulukhuni be-ceramics noma ezinye izinto ngokulinganisa usayizi theukugoba okushiywe yi-indenter. Kufanelekile ezingxenyeni ezincane nasezingxeni ezincane. Kusebenzisa i-indenter yedayimane kanye nomthwalo olula ukudala ukugoba ezintweni ezivivinywayo. Inani lobulukhuni lingaba futhi isilinganiso sokujula kokugoba okubangelwa yi-indenter.
Ngokwezidingo ezahlukene zemakethe zokusebenza kwe-alumina ceramics, i-Chemshun Ceramics ikhiqiza i-AL2O3 92%, i-AL2O3 95%izinto zobumba ezingagugi ze-aluminaOkuqukethwe kwe-alumina kuthinta ubulukhuni bezinto zobumba ngezinga elithile, okungukuthi, ukumelana nokuguguleka. Amakhasimende angakhetha izibumba ezingagugi ezinokuqukethwe okuhlukile kwe-alumina ngokuya ngezidingo zendawo yokusebenza.
Isikhathi sokuthunyelwe: Okthoba-13-2022