ʻO ka Sintering a me ka hoʻolei ʻana iā AlNiCo Magnet

ʻAʻole hiki ke hoʻolālā ʻia nā mea magnet permanent Alnico e like me nā ʻāpana hana ma muli o nā hiʻohiʻona o ka ikaika mechanical haʻahaʻa, kiʻekiʻe paʻakikī, brittleness, a me ka machinability maikaʻi ʻole.Hiki ke hoʻohana ʻia kahi wili liʻiliʻi a i ʻole EDM i ka wā o ka hana ʻana, ʻaʻole hiki ke hoʻohana ʻia nā ʻano hana ʻē aʻe e like me ka forging a me nā mīkini ʻē aʻe.

Hana ʻia ʻo AlNiCo ma ke ʻano hoʻolei.Eia kekahi, hiki ke hoʻohana ʻia ka pauka metallurgy e hana i nā magnet sintered, kahi haʻahaʻa haʻahaʻa.Hiki ke hana ʻia ʻo Cast AlNiCo i nā ʻano nui a me nā ʻano like ʻole a ʻo nā huahana AlNiCo sintered ka nui o ka liʻiliʻi.A ʻoi aku ka maikaʻi o nā mea hana o AlNiCo i hoʻopaʻa ʻia, ʻoi aku ka liʻiliʻi o nā waiwai magnetic akā ʻoi aku ka maikaʻi o ka machinability.

ʻO ka maikaʻi o nā magnet AlNiCo he kiʻekiʻe ke hoʻomau (a hiki i 1.35T), akā ʻo ka hemahema ʻo ia ka haʻahaʻa o ka ikaika coercive (maʻa mau ma lalo o 160kA / m), a ʻo ka demagnetization curve ʻaʻole linear, no laila he mea maʻalahi ʻo AlNiCo. e hoʻopaneʻe ʻia a maʻalahi hoʻi e demagnetized.I ka hoʻolālā ʻana i ka circuit circuit a me ka hana ʻana i nā mea hana, pono e uku ʻia ka nānā kūikawā a pono e hoʻopaʻa ʻia ka magnet ma mua.I mea e pale aku ai i ka demagnetization hiki ʻole ke hoʻololi ʻia a i ʻole ka distortion o ka hoʻoili ʻana o ka magnetic flux density, pāpā loa ʻia ke hoʻopili ʻana me nā mea ferromagnetic i ka wā e hoʻohana ai.

Cast AlNiCo permanent magnet i ka haʻahaʻa reversible wela coefficient i waena o nā mea paʻa magnet, hiki i ka mahana hana ke piʻi i 525 ° C, a me ka Curie mahana i 860 ° C, ʻo ia ka mea magnet mau loa me ka Curie kiʻekiʻe.Ma muli o ke kūpaʻa wela maikaʻi a me ka paʻa ʻana o ka wā kahiko, ua hoʻohana maikaʻi ʻia nā magnet AlNiCo i nā kaʻa, nā mea kani, nā mea electroacoustic, a me nā mīkini magnetic, etc.