ZTA (Zirconia Toughened Alumina) ceramic rabara vulcanized plate ndi chinthu chosawonongeka chomwe chimapangidwa makamaka kuti chigwiritsidwe ntchito pamavuto ovuta kwambiri. Chogulitsachi chimaphatikiza ZTA ceramics (nthawi zambiri zimakhala ndi 75%-80% Al₂O₃ ndi 20%-25% ZrO₂) ndi rabara yachilengedwe yolimba kwambiri komanso mbale yochirikiza yachitsulo kudzera mu njira yapamwamba yopangira vulcanization, yokhala ndi mabolts okhazikika kale kuti azitha kuyika mosavuta. Malingaliro apakati a kapangidwe kake amagwiritsa ntchito kukana kwakukulu kwa ceramics kuti ipirire kukanda kwa zinthu pomwe gawo la rabara limatenga mphamvu yokhudza kukanda, zomwe zimapangitsa kuti pakhale mgwirizano pakati pa kukana kuwonongeka ndi kulimba kwa kukanda.
Chifukwa cha njira yolimba ya kusintha kwa gawo la zirconia, ZTA imawonetsa kulimba kwambiri kwa kusweka ndi kukana kuvala kuposa zidole za alumina wamba. Kafukufuku akusonyeza kuti zidole za ZTA zokhala ndi zirconia 20%-25% zimasonyeza kugwira ntchito bwino kwambiri pansi pa mikhalidwe yovuta kwambiri ya kugwedezeka. Mafotokozedwe aukadaulo wamba ndi awa: kuchuluka kwa bulk density ≥4.1-4.3 g/cm³, Rockwell hardness (HRA) ≥90, fracture toughness (KIC) ≥3.70 MPa·m1/2, ndi flexural strength >350 MPa. Mu mayeso owuma otsetsereka, kuchuluka kwa kuvala kwa zidole za ZTA kumatha kukhala kotsika mpaka 10⁻⁹ mm³/(N·m), kopambana kwambiri zidole za alumina imodzi kapena zirconia.
Njira yopangira zinthu imaphatikizapo kutenthetsa bwino kwambiri kuti zitsimikizire kuti pali mphamvu zambiri pa ceramic-raber interface. Malinga ndi miyezo ya makampani, mphamvu ya shear bond pakati pa ceramic ndi rabara iyenera kupitirira 3.5 MPa, pomwe rabara yokha ikuwonetsa mphamvu yokoka ya 12-15 MPa ndipo kutalika kwake pakusweka kuli kopitilira 250%-400%. Kapangidwe ka vulcanized composite kamaletsa matailosi a ceramic kuti asatuluke akagundidwa, pomwe kusintha kwa rabara kumafalitsa kupsinjika kwakukulu, kuteteza ceramic wosanjikiza ku kusweka kosalimba. Mbale yosungira zitsulo imatsimikizira kulimba kwa kapangidwe kake ikayikidwa pa zipolopolo za zida.
ZTA ceramic rabara vulcanized mbaleamagwiritsidwa ntchito makamaka m'ma chutes osamutsira, ma hopper, ndi mabini a makina ogwiritsira ntchito zinthu zambiri komwe kukhudzidwa ndi kusweka kuli kofala. Poyerekeza ndi ma alumina ceramic liners oyera, ZTA imapereka moyo wautali woposa nthawi 2.5 pansi pa mikhalidwe ya kusweka, pomwe mtengo wake ukadali wotsika kwambiri kuposa zirconia ceramics zoyera, zomwe zimapangitsa kuti mtengo wake ukhale wokwera kwambiri. Pakugwiritsa ntchito zinthu zazikulu, kutalika kwa madontho, kapena kuthamanga kwa madzi ambiri, mbale za rabara za ZTA ndi imodzi mwa njira zodalirika zotetezera kuvala zomwe zilipo.
Nthawi yotumizira: Feb-24-2026