Monga chinthu cholimba kwambiri,njerwa zopepuka za mulliteZimakonda kwambiri m'mafakitale apadziko lonse lapansi chifukwa cha kutenthetsa kwawo bwino, kukana kutentha kwambiri, komanso kupepuka. Zopangidwa kuti zikwaniritse zofunikira kwambiri pazida zotenthetsera kwambiri, njerwa izi sizimangochepetsa kugwiritsa ntchito mphamvu komanso zimawonjezera nthawi yogwira ntchito ya uvuni zamafakitale, zomwe zimapangitsa kuti zikhale chisankho chabwino kwambiri kwa mabizinesi omwe akufuna kuchita bwino komanso chitukuko chokhazikika.
Mafotokozedwe a njerwa zopepuka za mullite ndi ofanana ndipo amasinthidwa kuti agwirizane ndi zochitika zosiyanasiyana zamafakitale. Mitundu yayikulu ikuphatikizapo JM23, JM25, JM26, JM27, JM28, JM30, ndi JM32, yokhala ndi alumina kuyambira 40% mpaka 77% ndipo kuchuluka kwa oxide yachitsulo sikupitirira 1.0% (mpaka 0.5% ya mitundu yoyera kwambiri). Kuchuluka kwawo kwakukulu ndi 0.55g/cm³ mpaka 1.35g/cm³, ndipo mphamvu yozizira yophwanyira ndi 1.0MPa mpaka 3.5MPa, zomwe zimapangitsa kuti magwiridwe antchito azikhala okhazikika pansi pa mikhalidwe yosiyanasiyana ya katundu. Kutentha kwa gulu ndi 1260℃ mpaka 1760℃, kutentha koyambira kofewa kwa katundu ndi 1080℃ mpaka 1570℃, ndipo chiŵerengero chosinthika cha mzere chokhazikika pambuyo pa kutentha kwakukulu ndi -1.5% mpaka 0.5%. Kukula kokhazikika ndi 230x114x65mm, ndipo kukula kopangidwa mwamakonda kumapezeka malinga ndi zosowa za makasitomala pa ntchito yomanga nyumba yopanda msoko.
Mphamvu ya kutentha ya njerwa zopepuka za mullite ndi yotsika kufika pa 0.18W/(m·K) pa 200℃, zomwe zingathandize kuchepetsa kutaya kutentha ndikuwongolera kugwiritsa ntchito mphamvu—ubwino waukulu pakupanga mafakitale. Zopangidwa ndi alumina ndi silica yoyera kwambiri, njerwa izi zimapanga kapangidwe ka kristalo kokhazikika ka mullite, komwe kali ndi galasi laling'ono, cristobalite, kapena corundum, komwe kumawonjezera kwambiri kukana kwawo kutentha komanso kukana dzimbiri kwa mankhwala. Zitha kukhudzana mwachindunji ndi malawi, kuchotsa kufunikira kwa zigawo zina zotetezera kutentha ndikupangitsa kuti ntchito yomanga ikhale yosavuta.
Njerwa zopepuka za mullite zimagwiritsidwa ntchito m'njira zosiyanasiyana, kuphatikizapo zitsulo, zoumba, magalasi, petrochemical ndi mafakitale ena. Mu makampani opanga zitsulo, zimagwiritsidwa ntchito popangira ng'anjo yotentha, mabowo ndi pansi pa ng'anjo yotentha, komanso pamwamba pa ng'anjo yamagetsi yopangira zitsulo, zomwe sizimangosunga kutentha kokhazikika komanso zimachepetsa kugwiritsa ntchito mphamvu. Mu makampani opanga ng'anjo, ndi zipangizo zabwino kwambiri zopangira ma rollers kilns, shuttle kilns, ndi ma drawer kilns, zomwe zimathandiza kuti kutentha ndi kuziziritsa zizizire mwachangu komanso kukonza bwino ntchito yopanga.
Mu makampani opanga magalasi, amagwiritsidwa ntchito pa zokonzanso ng'anjo yosungunuka ndi njira zodyetsera, zomwe zimatha kupirira kutentha kwambiri komanso kuwonongeka kwa mankhwala kuti zitsimikizire kuti zinthu zili bwino. Mu makampani opanga mafuta, amagwiritsidwa ntchito popangira ng'anjo zosweka ndi mafuta, ng'anjo zopangira ammonia, ndi ng'anjo zotsalira za gasi la mafuta, zomwe zimatha kupirira malo ovuta kugwira ntchito. Kuphatikiza apo, amagwiritsidwa ntchito kwambiri m'ng'anjo zosiyanasiyana zamagetsi, zoyatsira moto, ndi zida zoyatsira kutentha kwambiri, zomwe zimapereka chitetezo chodalirika cha kutentha komanso chithandizo cha kapangidwe kake.
Poyerekeza ndi njerwa zachikhalidwe zosagwira ntchito, njerwa zopepuka za mullite zili ndi ubwino woonekeratu: kukhuthala kochepa kumatha kuchepetsa kulemera kwa uvuni ndi katundu womangidwa, kutentha kochepa kumatha kusunga mafuta ndi 15%-20%, ndipo kuyera kwambiri kumatsimikizira magwiridwe antchito okhazikika m'mlengalenga wovuta. Kaya ndi zofunikira wamba kapena zofunikira zapadera, zimatha kukwaniritsa zosowa zosiyanasiyana zamafakitale osiyanasiyana. Sankhani njerwa zathu zopepuka za mullite zapamwamba kwambiri kuti zikuthandizeni kuchepetsa ndalama zogwirira ntchito, kukonza magwiridwe antchito, ndikukwaniritsa chitukuko chobiriwira komanso chokhazikika.
Nthawi yotumizira: Epulo-03-2026
