nkhani

Ufa wa Wollastonite wakhala chinthu chofunikira kwambiri mu zotengera zamagetsi zotetezera kutentha, zomwe zimapangitsa kuti zinthu zamagetsi zikhale ndi mphamvu zambiri monga ma transformer, ma circuit breaker, ndi ma insulator bushings. Kuphatikiza kwake kwapadera kwa kuyera kwambiri, kutayika kwa dielectric kochepa, komanso kukhazikika kwa kutentha kumapangitsa kuti ikhale yoyenera kugwiritsidwa ntchito pofunikira kutetezera kutentha kwamagetsi kodalirika komanso kutayika kwa kutentha.​

Mphamvu yamagetsi - mphamvu yamagetsi yayikulu kwambiri yomwe chinthucho chingathe kupirira popanda kuwonongeka imawonjezeka kwambiri mu zoumba zokhala ndi ufa wa wollastonite. Popeza kuchuluka kwa kuyera nthawi zambiri kumapitirira 95% CaSiO3 komanso kuchuluka kochepa kwa zinthu zodetsa (monga chitsulo ndi sodium), wollastonite imathandiza kusunga kukana kwakukulu kwa kutenthetsa ngakhale pamagetsi opitilira 10kV. Ikafalikira mofanana mu matrices a ceramic (nthawi zambiri imaphatikizidwa ndi alumina kapena magnesia), tinthu take ta acicular timapanga njira yozungulira yamagetsi, kuletsa kugwedezeka ndikuwonetsetsa kuti magwiridwe antchito okhazikika m'malo okhala ndi magetsi ambiri. Izi zimapangitsa zoumba zopangidwa ndi wollastonite kukhala zoyenera kugwiritsidwa ntchito kwambiri komwe kulephera kwa kutenthetsa kungayambitse kuwonongeka kwa zida kapena ngozi zachitetezo.​
Kuchepetsa kukhuthala kwa mpweya ndi phindu lina lalikulu la ufa wa wollastonite mu zoumba zamagetsi. Pa nthawi yothira mpweya, kukula kwake kochepa (ma microns 5-20) kumadzaza mipata pakati pa tinthu tating'onoting'ono ta ceramic, zomwe zimapangitsa kuti zinthu zikhale zolimba komanso kuchepetsa malo obisika. Kapangidwe kakang'ono kameneka sikuti kamangowonjezera mphamvu ya makina (kuchepetsa kusweka panthawi yogwira ntchito ndikugwira ntchito) komanso kumaletsa kulowa kwa chinyezi ndi mpweya - zinthu zomwe zingawononge mphamvu zotetezera mpweya pakapita nthawi. Kwa zoumba zakunja zomwe zimakhudzidwa ndi mvula, chinyezi, ndi kuipitsidwa, kukhuthala kochepa kumeneku ndikofunikira kuti zisunge magwiridwe antchito a dielectric kwa nthawi yayitali.​
Kusinthasintha kwa kutentha kumawonjezeka mu zoumba zokhala ndi wollastonite, zomwe zimapangitsa kuti pakhale vuto lalikulu muzinthu zamagetsi amphamvu zomwe zimapangitsa kutentha kwakukulu panthawi yogwira ntchito. Ndi kutentha komwe kumasinthasintha pafupifupi 3 W/m·K (kokwera kuposa zodzaza zambiri zachikhalidwe za ceramic), wollastonite imapangitsa kutentha kusamutsidwa kutali ndi zinthu zoyendetsera, zomwe zimathandiza kusunga kutentha kokhazikika. Mphamvu yoyendetsera kutenthayi imawonjezera moyo wa zinthuzo poletsa kuwonongeka kwa insulation komwe kumabwera chifukwa cha kutentha, makamaka mu ma transformer ndi zida zogawa magetsi komwe kutentha kwambiri kungayambitse kulephera kwakukulu.​
Kukhazikika kwa kutentha kwambiri kumaonetsetsa kuti zoumba zokongoletsedwa ndi wollastonite zimagwira ntchito bwino kwambiri potentha kwambiri. Mcherewu umasunga kapangidwe kake ndi makhalidwe ake pa kutentha mpaka 1500°C, kupirira kutentha kwakukulu komwe kumakumana nako popanga (kutentha) komanso mu ntchito. Kukhazikika kumeneku kumaletsa kusintha kwa magawo kapena kusagwirizana kwa kutentha komwe kungayambitse kupsinjika kapena ming'alu yamkati, kuonetsetsa kuti mawonekedwe ake ndi magwiridwe antchito nthawi zonse pakusintha kwa kutentha.​
Ubwino wokonza ufa wa wollastonite umapangitsa kuti ufa wa wollastonite ukhale wosavuta kuuphatikiza mu ceramic formulations. Umawonjezera mphamvu yobiriwira (mphamvu ya ceramics zosayaka), kuchepetsa kusweka panthawi yopanga ndi kugwiritsa ntchito. Kunyowa kwake kochepa kumachepetsa njira zowumitsa, pomwe kugwirizana kwake ndi zomangira za ceramic zomwe zimagwirizana kumatsimikizira kusakaniza kofanana ndi kupanga. Pa mawonekedwe ovuta monga ma insulator discs kapena ma terminal blocks, mphamvu ya wollastonite panthawi yopanga ufa imathandiza kusunga kulondola kwa miyeso, kuchepetsa zofunikira pambuyo pa kukonza.​
Kuwongolera khalidwe ndikofunikira kwambiri pa ufa wa wollastonite wamagetsi. Ogulitsa amauyesa mwamphamvu mphamvu ya dielectric, kufalikira kwa tinthu tating'onoting'ono, ndi kuchuluka kwa kuipitsidwa, kuonetsetsa kuti akutsatira miyezo yamakampani monga IEC (International Electrotechnical Commission). Kukonza pamwamba pogwiritsa ntchito zinthu zolumikizira kungagwiritsidwe ntchito kulimbitsa mgwirizano ndi ma ceramic matrices, ndikupititsa patsogolo mawonekedwe a makina ndi magetsi.​


Nthawi yotumizira: Ogasiti-13-2025