1. Kev cuam tshuam ntawm cov hmoov raw khoom
Cov khoom siv tseem ceeb tshaj plaws rau cov khoom siv alumina uas tiv taus hnav yog cov hmoov alumina uas muaj cov khoom huv si. Nws cov kev ua tau zoo thiab cov ntsiab lus muaj feem cuam tshuam loj rau cov khoom siv alumina uas tiv taus hnav. Cov hmoov ceramic yuav tsis zam tsis tau cov khoom tsis huv thaum lub sijhawm npaj, thiab cov khoom tsis huv organic yuav raug hlawv thaum lub sijhawm sintering, tsim cov qhov tsis sib xws thaum lub sijhawm densification; cov khoom tsis huv inorganic yuav cuam tshuam nrog cov hmoov ceramic ntawm qhov kub siab lossis hauv matrix Tsim cov microcracks. Cov khoom tsis huv no muaj feem cuam tshuam loj rau kev densification ntawm alumina ceramics. Qhov loj me ntawm cov hmoov raw kuj muaj feem cuam tshuam loj rau kev ua tau zoo ntawm cov khoom. Tsuas yog thaum cov khoom siv raw zoo txaus, cov khoom sintered kawg tuaj yeem tsim cov qauv microcrystalline, uas ua rau nws muaj kev tiv taus hnav zoo. Yog li ntawd, cov hmoov alumina uas muaj cov khoom huv si, cov khoom zoo yog qhov tseem ceeb rau kev npaj cov khoom siv alumina uas tiv taus hnav.
2. Kev cuam tshuam ntawm txoj kev molding
Kev xyaum tsim khoom thiab ntau txoj kev tshawb fawb tau qhia tias cov alumina ceramics uas muaj porosity tsawg, muaj cov khoom zoo heev. Cov ntom ntom siab txhais tau tias cov noob siv lead ua hauv lub cev ceramic tau teeb tsa zoo, thiab nws tsis yooj yim los tsim qhov chaw tawg thaum raug cov khoom sab nraud lossis cov tshuaj corrosive.
Yuav kom tau txais cov khoom siv ceramic uas muaj cov khoom ntom ntom siab, nws yog ib qho tseem ceeb heev. Feem ntau, cov khoom siv ceramic uas tiv taus alumina tuaj yeem tsim los ntawm kev nias qhuav, nias isostatic, casting kub thiab lwm yam. Cov txheej txheem sintering sib txawv muaj cov yam ntxwv sib txawv thiab muaj cov teebmeem sib txawv rau cov khoom sintering thiab microstructure ntawm alumina ceramics.
Cov khoom uas muaj ntau yam duab feem ntau yog ua los ntawm kev grouting lossis kub-nias casting, thiab cov khoom uas muaj cov duab yooj yim yog tsim los ntawm kev nias qhuav.
3. Cov nyhuv sintering
Sintering yog ib theem tseem ceeb hauv kev npaj cov khoom siv ceramic, thiab huab cua sintering muaj kev cuam tshuam loj heev rau kev npaj cov khoom siv ceramic. Qhov kub hnyiab siab dhau lossis lub sijhawm tuav ntev dhau yuav txhawb kev loj hlob ntawm cov siv lead ua, ua rau cov khoom siv raw zoo tsim mus rau hauv cov noob loj ntawm qhov kub siab, thiab cov ntsiab lus ntawm cov kua yuav nce ntxiv. Qhov no tsis tsuas yog txo qhov muaj zog, tab sis kuj txo qhov hnav tsis kam. Tau kawg, yog tias qhov kub qis dhau, lub cev sintered yuav tsis ntom, thiab qhov hnav tsis kam ntawm cov khoom yuav tsis zoo.
Qhov cub hluav taws xob sintering zoo heev sintering tuaj yeem tswj tau qhov cua sov, tuav thiab txias txheej txheem, uas ua lub luag haujlwm tseem ceeb hauv kev txhim kho qhov hnav tsis kam ntawm cov khoom siv ceramics, tab sis tus nqi sintering thiab cov khoom siv refractory siv ntawm lub cub hluav taws xob siab dua li cov ntawm cov thee mines.
4. Kev ua kom kub hnyiab sai
Cov khoom siv sintering tsim nyog txo qhov kub thaum lub sijhawm sintering, txhim kho cov qauv me me ntawm cov ceramics, thiab txhim kho cov khoom siv kho tshuab, yog li ua kom zoo dua qhov kev tiv thaiv kev hnav ntawm alumina hnav-resistant ceramics.
Chaw tsim khoom CHEMSHUN CERAMIC ua tib zoo mloog zooalumina ceramic vuas sivzoo ntawm kev tsim khoom. Txais tos rau kev nug.
Lub sijhawm tshaj tawm: Tsib Hlis-28-2023