Ndi zinthu zake zapadera, 99% alumina ceramic ikuwonetsa kuthekera kwakukulu kogwiritsa ntchito poteteza zipolopolo, ndipo yakhala chisankho chofunikira pakati pa njira zopepuka zotetezera zipolopolo.
99% alumina ceramicIli ndi kuuma kwakukulu komanso mphamvu yokakamiza. Ukhondo wake wa alumina ndi wokwera kwambiri, ndipo kuchuluka kwake ndi kwakukulu kwambiri. Palibe ma pores kapena zonyansa mkati mwake. Kuuma kwake kumatha kufika pamwamba pa HRA90, ndipo mphamvu yokakamiza imapitirira 3000 MPa. Chipolopolo chikagunda mofulumira, pamwamba pa ceramic yolimba imatha kukanikiza, kusokoneza, kapena kuswa mutu wa chipolopolo nthawi yomweyo. Nthawi yomweyo, kapangidwe ka kristalo ka ceramic kokhala ndi mphamvu zambiri kumatha kufalitsa mphamvu yokakamiza mwachangu ndikugwiritsa ntchito mphamvu ya kinetic ya chipolopolocho, kuletsa mutu wa chipolopolo kulowa mu mbale yoteteza zipolopolo, motero kupatsa nthawi kuti gawo lotsatira la buffer lizitenga mphamvuyo.
Ponena za kapangidwe kopepuka, 99% ya alumina ceramics ili ndi ubwino waukulu. Poyerekeza ndi zipangizo zachitsulo zachikhalidwe zoteteza zipolopolo (monga mbale zachitsulo), kuchuluka kwake ndi 3.9-4.0g/cm³ yokha, komwe ndi kochepera theka la theka la chitsulo. Pansi pa mulingo womwewo woteteza, kulemera kwa zida zoteteza zipolopolo pogwiritsa ntchito 99% ya alumina ceramics kumatha kuchepetsedwa ndi 40%-60%, zomwe ndizofunikira kwambiri pazinthu zomwe zimakhudzidwa ndi kulemera monga zida zodzitetezera payekha komanso zida zamagalimoto. Izi zitha kuchepetsa katundu kwa ogwiritsa ntchito ndikuwonjezera kuyenda.
Mu ntchito zenizeni, 99% ya alumina ceramics nthawi zambiri imaphatikizidwa ndi zinthu zopangidwa ndi ulusi (monga aramid, ultra-high molecular weight polyethylene) kuti apange kapangidwe kolimba ka zipolopolo. Chigawo cha ceramic chimagwira ntchito ngati mzere woyamba wa chitetezo, womwe umayang'anira kuswa mutu wa chipolopolo ndikufalitsa mphamvu yogunda. Chigawo cha ulusi chimayamwa mphamvu yotsalayo kudzera mu kusintha. Kugwirizana kwa zigawo ziwirizi kumatha kukulitsa kwambiri chitetezo chonse. Mwachitsanzo, mu zoyika zolimba za zipolopolo, 99% ya mapepala a alumina ceramic, atadulidwa ndi kusonkhana molondola, amaphatikizidwa ndi mbale yakumbuyo ya ulusi. Amatha kukana bwino kukhudzidwa ndi zipolopolo za mfuti ndi mfuti ndikukwaniritsa miyezo yoteteza ya NIJ III ndi pamwambapa.
Kuphatikiza apo, kukhazikika kwa mankhwala ndi kukana kutentha kwambiri kwa 99% alumina ceramics kumaperekanso chitsimikizo cha kugwiritsidwa ntchito kwawo polimbana ndi zipolopolo. Sizimawonongeka mosavuta ndi chilengedwe ndipo zimatha kukhalabe ndi magwiridwe antchito okhazikika ngakhale m'mikhalidwe yovuta monga chinyezi ndi kutentha kwambiri. Kuphatikiza apo, chipolopolo chikagunda ndikupanga kutentha kwakukulu kwapafupi (komwe kutentha nthawi yomweyo kumafika madigiri Celsius mazana angapo), sichidzawonongeka chifukwa cha kutentha kwakukulu, motero sichidzakhudza chitetezo ndikuwonetsetsa kuti zida zoteteza zipolopolo zikukhala zodalirika kwa nthawi yayitali.
Nthawi yotumizira: Ogasiti-07-2025