Mabhuroko eAlumina Ceramic Anodzivirira Kupfekwa: Akagadzirwa kuti adzivirire zvakanyanya kupwanyika

Zvivharo zve alumina zveceramic zvinodzivirira kupfekazvakagadzirwa nemazvo kubva kualuminium oxide ine pureity high-purity (Al₂O₃ content ≥ 92–99%) kuburikidza nekudzvanya-dry-pressing uye kupisa kwakanyanya pa1,500–1,700°C. Maitiro aya ekugadzira epamusoro anopa zvinhu zveceramic zvine kuoma kwakanyanya—zvichiyera 9 pachikero cheMohs uye HRA 80–90 pachikero cheRockwell, chiri chechipiri kune dhaimani. Nehuwandu hwe3.60–3.85 g/cm³, mabhuroko aya anorema hafu yesimbi, zvichideredza zvakanyanya mutoro wemidziyo uku zvichipa dziviriro yepamusoro yekupfekwa. Zvinhu izvi zvinoratidza kunyudzwa kwemvura kwakaderera pasi pe0.01%, zvichiita kuti kushanda kwakasimba kunyangwe munzvimbo dzine hunyoro.

Kusapfeka zvakanaka kwemidziyo ye alumina ceramic blocks kunoreva kuti michina yacho inogara kwenguva refu uye kuderedza mari yekuchengetedza. Kuedzwa kwakazvimirira kunoratidza kuti kusapfeka kwavo kwakapetwa ka260-266 kupfuura simbi ye manganese uye kwakapetwa ka170-171.5 kupfuura simbi ine chromium yakawanda. Nesimba rekudzvanya rinosvika ≥2,000 MPa uye simba rekutenderera re 255-300 MPa, michina iyi inotsungirira zvinhu zvinorema pasina kupwanyika. Kusimba kwavo kwekupwanyika (KIC) kwe ≥4.8 MPa·m¹/² kunoita kuti igare kwenguva refu mumamiriro ekumanikidzwa. Hunhu uhwu hunoita kuti michina ye alumina ceramic blocks ive mhinduro yakanaka yekuisa michina yakawanda senge chutes, hoppers, ma cyclones, uye masisitimu ekubata zvinhu.

Kubva pakuchera migodhi nekugadzira zvicherwa kusvika pakugadzira simende, kugadzira simbi, kugadzira simba rekupisa, uye kugadzirisa makemikari, mabhuroko esimbi esimbi asingaparare ane alumina ceramic aratidza kukosha kwawo mumaindasitiri uko kukwesha michina kuri chinhu chikuru chinonetsa. Anowanikwa muAl₂O₃ purity grades ye92%, 95%, uye 99%, mabhuroko aya anogona kugadziriswa kuti asvike pazvinodiwa zvekushandisa, nekuchena kwakanyanya kuchiwedzera kusimba kwekukwesha uye ngura. Nekuisa mabhuroko esimbi esimbi munzvimbo dzakakosha dzekukwesha, vashandi vemafekitori vanogona kuderedza zvakanyanya nguva yekusashanda isina kurongwa, kuderedza zvinhu zvinotsiva zvikamu, uye kuwana mutengo wakaderera wekuva muridzi wemidziyo muhupenyu hwese hwemidziyo.