Sigogi da Aikace-aikace na Tayoyin Ceramic na Alumina masu jure lalacewa

Fale-falen yumbu na alumina masu jure lalacewaSamfuran yumbu ne masu aiki waɗanda aka yi daga sinadarin aluminum oxide mai tsafta (Al₂O₃) ta hanyar matsewa da kuma tacewa mai zafi. Yawan sinadarin Al₂O₃ ɗinsu yawanci kashi 92%, 95%, ko 99% ne, tare da yawan da ya kama daga 3.60 g/cm³ zuwa 3.90 g/cm³ da kuma shan ruwa ƙasa da 0.01%. Kayan yana nuna tauri mai yawa da kuma kyakkyawan kwanciyar hankali na sinadarai, wanda ya dace da yanayin masana'antu da suka shafi tasiri, gogayya mai zamiya, da kuma hanyoyin lalata.

Sigogi na aiki na yau da kullun: Taurin Mohs na 9, taurin Rockwell HRA 85-90, da juriyar sawa sau 20-30 fiye da na ƙarfen carbon na yau da kullun (lalacewar girma ≤0.05 cm³ ga gwajin ƙafafun roba na ASTM G65 busasshen yashi). Ƙarfin lanƙwasa ya kai 250-350 MPa, ƙarfin wutar lantarki na thermal kusan 25-30 W/(m·K), kuma zafin aiki yana tsakanin -50 °C zuwa 1200 °C (ya danganta da takamaiman matakin). Waɗannan bayanan suna tabbatar da aminci na dogon lokaci a ƙarƙashin yanayin lalacewa mai yawa da zafi mai yawa.

Ana amfani da wannan samfurin sosai don kare lalacewa a cikin kayan aiki masu mahimmanci a masana'antar siminti, ƙarfe, wutar lantarki, haƙar ma'adinai, da kwal, kamar ruwan wukake masu rarrabuwa, magudanar ruwa, gwiwar hannu na bututu, guguwa, da layin hopper. Hanyoyin shigarwa sun haɗa da haɗakar resin epoxy, bolting, ko walda (ta amfani da tayal ɗin yumbu da aka riga aka haƙa tare da faranti na roba/ƙarfe). Kauri na yau da kullun yana tsakanin mm 5 zuwa 25 mm; girman tayal ɗin da aka saba amfani da shi ya haɗa da siffofi murabba'i 10 mm × 10 mm, 20 mm × 20 mm, da 50 mm × 50 mm murabba'i ko siffar hexagonal don sauƙin yankewa da tsara shi a wurin.

Amfani da tayal ɗin yumbu na alumina masu jure lalacewa yana ƙara tsawon rayuwar kayan aiki sosai kuma yana rage lokacin aiki don gyarawa. Bayanan filin sun nuna cewa a ƙarƙashin yanayi iri ɗaya na aiki, layin yumbu yana ɗaukar tsawon lokaci sau 3-8 fiye da ƙarfe mai yawan manganese ko faranti na ƙarfe masu jure lalacewa. Samfurin ba shi da maganadisu, yana jure lalata acid/alkali (banda hydrofluoric acid da alkali mai zafi mai yawa), kuma baya gurɓata kayan. Zaɓin ya kamata ya ƙayyade abun ciki na Al₂O₃ da kauri tayal bisa ga ainihin kusurwar tasiri, girman barbashi, da zafin jiki don cimma daidaito tsakanin aiki da farashi.