Ponyani Alnico Magnet

Maginito a Alnico amaikidwa m'magulu pogwiritsa ntchito manambala omwe amaperekedwa ndi Magnetic Materials Producers Association (MMPA), mwachitsanzo, alnico 3 kapena alnico 5.

Alnico maginito amapangidwa ndi kuponyera kapena sintering njira.[8] Maginito a Anisotropic alnico amayendetsedwa ndi kutentha pamwamba pa kutentha kwakukulu ndi kuzizira pamaso pa mphamvu ya maginito. Zonse za isotropic ndi anisotropic alnico zimafuna chithandizo choyenera cha kutentha kuti chikhale ndi maginito abwino kwambiri-popanda mphamvu ya alnico imakhala pafupifupi 10 Oe, yofanana ndi chitsulo chamakono, chomwe ndi chinthu chofewa cha maginito. Pambuyo pochiza kutentha kwa alnico imakhala chinthu chophatikizika, chotchedwa "mpweya" - imakhala ndi iron- ndi cobalt-rich [9] imalowa mu matrix olemera a NiAl.

Alnico's anisotropy imayendetsedwa ndi maginito omwe amafunidwa pogwiritsira ntchito mphamvu ya maginito yakunja kwa iyo panthawi ya particle nucleation, yomwe imapezeka pamene kuzizira kuchokera ku 900 ° C (1,650 ° F) mpaka 800 ° C (1,470 ° F), pafupi ndi Curie point. . Popanda munda wakunja pali ma anisotropies am'deralo amayendedwe osiyanasiyana chifukwa cha magnetization modzidzimutsa. Kapangidwe ka mpweya ndi "chotchinga" kutsutsana ndi kusintha kwa maginito, chifukwa imakonda mayiko ochepa a magnetization omwe amafunikira mphamvu zambiri kuti zinthuzo zikhale zapakati. Komanso, mphamvu ya maginito yofooka imasintha maginito a gawo la matrix okha ndipo imasinthidwa.

Alnico maginito ndi abwino kwa ntchito kutentha kwambiri mpaka 550ºC
. Cast AlNICo Magnet ndi okhazikika kwambiri, ali ndi kukana bwino kwa dzimbiri komanso kuuma kwamtundu wa 50 Rockwell C. Kamodzi kuponyedwa, zinthuzo zimakhala zolimba kwambiri kotero kuti makina okhawo amatha kugaya.
. Cast AlNICo Magnet imayimira maginito osunthika kwambiri omwe amapezeka. Mitundu yosiyanasiyana ya katundu imatha kupangidwa moyenera kuti igwiritsidwe ntchito mwapadera posintha kusanthula kwazinthu ndi chithandizo cha kutentha.