Kayendetsedwe kazinthu:Ili ndi kukhazikika kwamphamvu kwa kutentha kwakukulu, kukana kwamphamvu kwamafuta, kukana kuvala, kukana kwa dzimbiri ndi zinthu zina.
Zogwiritsa ntchito kwambiri:Amagwiritsidwa ntchito kwambiri m'malo osinthika a ng'anjo za simenti, ng'anjo zowola, ma ducts apamwamba apamwamba, ndi zida zina zotentha zomwe zimafuna kukana kugwedezeka kwamafuta.
Zogulitsa:Monga zida zoyambira zamakina okanira, njerwa zazitali za aluminiyamu zimakhala ndi mawonekedwe okanira kwambiri, kutentha kwambiri kofewa (kuzungulira 1500 ° C), komanso kukana kukokoloka kwabwino. Amagwiritsidwa ntchito kwambiri m'mafakitale m'mafakitale osiyanasiyana. Komabe, , chifukwa cha kuchuluka kwa gawo la corundum mu njerwa za aluminiyamu wamba, makhiristo a gawo la corundum muzinthu zowotchera amakhala okulirapo, ndipo kusweka ndi kusenda kumakhala kotheka kuchitika mukakumana ndi kuzizira kofulumira komanso kutentha. Kukhazikika kwa kutentha kwa kutentha pansi pa 1100 ° C kuzizirira kwa madzi kumangofikira nthawi 2-4. M'makina opangira simenti, chifukwa cha kuchepa kwa kutentha komanso zofunikira pakugwira ntchito kwa zida zokanira kuti zitsatire khungu la ng'anjo, njerwa zazikulu za alumina zitha kugwiritsidwa ntchito m'malo osinthika a ng'anjo yozungulira, mchira wang'anjo ndi chotenthetsera cha ng'anjo yowola. .
Anti-spalling high aluminium njerwa ndi njerwa zapamwamba za aluminiyamu zokhala ndi anti-flaking properties zopangidwa kutengera klinka ya aluminiyamu yapamwamba ndikuwonjezeredwa ndi ZrO2 kapena zipangizo zina. Zitha kugawidwa m'magulu awiri, imodzi ndi anti-flaking high-alumina njerwa zomwe zili ndi ZrO2, ndipo lina ndilo Mtundu woyamba ndi njerwa yotsutsa-flaking high alumina yomwe ilibe ZrO2.
Njerwa za anti-spalling high-alumina zimatha kukana kutentha kwapamwamba kwambiri, sizimacheperachepera komanso kukula kofanana, sizimakwawa kapena kugwa, zimakhala ndi mphamvu zotentha kwambiri komanso kutentha kwambiri, kutentha kwapang'onopang'ono, komanso kutentha kwambiri. kukhala ndi kutentha kwabwino. Ikhoza kupirira kusintha kwadzidzidzi kutentha kapena kutentha kosafanana, ndipo sichidzasokoneza kapena kupukuta. Kusiyana pakati pa njerwa za aluminiyamu zomwe zimakhala ndi ZrO2 ndi njerwa zapamwamba za alumina zopanda ZrO2 zili m'njira zosiyanasiyana. ZrO2 yokhala ndi njerwa zapamwamba za aluminiyamu zotsutsana ndi kuphulika zimagwiritsa ntchito zida za zircon kuti zigwiritse ntchito bwino kwambiri kukana dzimbiri. ZrO2 imakana kukokoloka kwa sulfure-chlor-alkali. Panthawi imodzimodziyo, pa kutentha kwakukulu, SiO2 yomwe ili mu zircon idzasintha kusintha kwa kristalo kuchokera ku cristobalite kupita ku gawo la quartz, zomwe zimapangitsa kuti pakhale mphamvu yowonjezera ya voliyumu, motero kuchepetsa chiopsezo cha kupewa sulfure-chlor-alkali. Panthawi imodzimodziyo, imalepheretsa spalling panthawi yotentha ndi yozizira; njerwa zotsutsana ndi kuphulika kwa alumina zomwe zilibe ZrO2 zimapangidwa powonjezera andalusite ku njerwa zapamwamba za alumina. Andalusite mu mankhwala amagwiritsidwa ntchito mulliteization yachiwiri mu uvuni wa simenti. Zimapanga mphamvu yosasinthika ya micro-expansion kotero kuti mankhwalawo sungachepe akazizira, kuthetsa kupsinjika kwa shrinkage ndikuletsa kuyanika kwapangidwe.
Poyerekeza ndi anti-spalling mkulu-alumina njerwa mulibe ZrO2, anti-spalling mkulu-aluminium njerwa munali ZrO2 ndi bwino kukana kulowa ndi kukokoloka kwa sulfure, klorini ndi alkali zigawo zikuluzikulu, kotero iwo ali bwino odana flaking katundu. Komabe, chifukwa ZrO2 ndi chinthu chosowa, ndi okwera mtengo , choncho mtengo ndi mtengo ndi apamwamba.Njerwa zoteteza kuphulika kwa aluminiyamu yokhala ndi ZrO2 zimangogwiritsidwa ntchito posintha ng'anjo za simenti. Njerwa zoletsa kuphulika za aluminiyamu zomwe zilibe ZrO2 zimagwiritsidwa ntchito kwambiri m'ng'anjo zowola za mizere yopangira simenti.
Nthawi yotumiza: Mar-28-2024
