ʻO ka hoʻonohonoho ʻana a me ka hoʻokalakupua ʻana o nā mākēneki NdFeB Sintered

ʻO ka hoʻonohonoho ʻana a me ka hoʻokalakupua ʻana o nā mākēneki NdFeB Sintered

Hiki ke hoʻokaʻawale ʻia nā mea magnetic i ʻelua mau ʻāpana: nā magnet isotropic a me nā magnet anisotropic:

Hōʻike nā mea magnet isotropic i nā waiwai like ʻole ma nā ʻaoʻao āpau a hiki ke hoʻokaʻawale ʻia i kēlā me kēia ʻaoʻao.

Hōʻike nā mea magnet Anisotropic i nā ʻano magnetic like ʻole ma nā ʻaoʻao like ʻole, a loaʻa iā lākou kahi kuhikuhi i makemake ʻia no ka hana magnetic maikaʻi loa, ʻike ʻia ʻo ke kuhikuhi kuhikuhi.

Loaʻa nā magnet anisotropic maʻamauhoʻopaʻa ʻia ʻo NdFeBahoʻopaʻa ʻia ʻo SmCo, ʻo ia nā mea ʻelua paʻakikī.

Nā Mākēneki Anisotropic

He kaʻina hana koʻikoʻi ka hoʻonohonoho ʻana i ka hana ʻana i nā magnet NdFeB sintered

Hoʻokumu ʻia ka magnetism o kahi magnet mai ke kauoha magnetic (kahi e hoʻopili ai nā kikowaena magnetic i kahi kuhikuhi kikoʻī). Hoʻokumu ʻia ka Sintered NdFeB ma ke kaomi ʻana i ka pauka magnetic i loko o nā mole. Hoʻokomo ʻia ke kaʻina hana i ka hoʻokomo ʻana i ka pauka magnetic i loko o kahi ʻano, e hoʻohana ana i kahi māla magnetic ikaika me ka electromagnet, a i ka manawa like me ka hoʻoikaika ʻana me kahi paʻi e hoʻohālikelike i ke koʻi magnetization maʻalahi o ka pauka. Ma hope o ke kaomi ʻana, hoʻoneʻe ʻia nā kino ʻōmaʻomaʻo, wehe ʻia mai ka mold, a loaʻa nā blanks hopena me nā kuhikuhi magnetization maikaʻi. A laila ʻoki ʻia kēia mau blanks i loko o nā ana kikoʻī e hana i nā huahana kila magnetic hope e like me nā koi o ka mea kūʻai aku.

He kaʻina koʻikoʻi ka hoʻonohonoho ʻana i ka pauka i ka hana ʻana i nā magnet mau loa NdFeB kiʻekiʻe. Hoʻopili ʻia ka maikaʻi o ka orientation i ka wā hana blank e nā ʻano like ʻole, me ka ikaika o ke kahua orientation, ke ʻano o ka pauka a me ka nui, ke ʻano hana, ke ʻano pili o ke kahua orientation a me ka hoʻokumu ʻana i ke kaomi, a me ka palupalu o ka pauka oriented.

Mākēneki Declination

ʻO ka skew magnetic i hana ʻia ma ka pae hoʻoponopono hope loa i kekahi hopena i ka hāʻawi ʻana i ke kahua magnetic o nā magnet.

ʻO ka magnetization ka hana hope loa e hāʻawi i ka magnetism ihoʻopaʻa ʻia ʻo NdFeB.

Ma hope o ka ʻoki ʻana i nā blanks magnetic i nā ana i makemake ʻia, hana lākou i nā kaʻina hana e like me ka electroplating e pale ai i ka corrosion a lilo i mau magnet hope loa. Eia nō naʻe, i kēia manawa, ʻaʻole hōʻike nā mea magnet i ka magnetism waho a koi aku i ka magnetization ma o kahi kaʻina i kapa ʻia ʻo "charging magnetism."

ʻO nā mea hana i hoʻohana ʻia no ka magnetizing ua kapa ʻia he magnetizer, a i ʻole ka mīkini hoʻokalakupua. Hoʻopi mua ka magnetizer i kahi capacitor me ka uila DC kiʻekiʻe (ʻo ia hoʻi, mālama i ka ikehu), a laila hoʻokuʻu iā ia ma o ka coil (magnetizing fixture) me ka haʻahaʻa haʻahaʻa. Hiki ke kiʻekiʻe loa ke kiʻekiʻe o ka manawa o ka pulse hoʻokuʻu, hiki i nā ʻumi kaukani amperes. Hoʻopuka kēia pulse o kēia manawa i kahi mākēneki ikaika i loko o ka mea hoʻoheheʻe magnetizing, kahi e hoʻopanee mau ai i ka magnet i hoʻokomo ʻia i loko.

Hiki ke loaʻa nā pōʻino i ka wā o ke kaʻina hana magnetization, e like me ka saturation piha ʻole, ka haki ʻana o nā pou o ka magnetizer, a me ka haki ʻana o nā mea magnet.

ʻO ka saturation piha ʻole ma muli o ka lawa ʻole o ka hoʻouka ʻana i ka volta, kahi i hiki ʻole ai ke kahua magnetic i hana ʻia e ka coil i 1.5 a 2 mau manawa i ka saturation magnetization o ka magnet.

No ka multipole magnetization, paʻakikī hoʻi nā magnet me nā kuhikuhi kuhikuhi ʻoi aku ka paʻakikī e hoʻopiha piha. ʻO kēia ke kumu no ka nui loa o ka mamao ma waena o nā pou luna a me lalo o ka mea magnetizer, no laila ʻaʻole lawa ka ikaika o ke kahua magnetic mai nā pou e hana i kahi kaapuni magnetic paʻa pono. ʻO ka hopena, hiki i ke kaʻina hana magnetization ke alakaʻi i nā pou magnetic disorderly a me ka lawa ʻole o ka ikaika kahua.

ʻO ka haki ʻana o nā pou o ka magnetizer ma muli o ka hoʻonohonoho ʻana i ka uila kiʻekiʻe loa, ʻoi aku ma mua o ka palena uila palekana o ka mīkini magnetizing.

ʻOi aku ka paʻakikī o ka hoʻoheheʻe ʻia ʻana o nā magnet unsaturated a i ʻole nā ​​​​magnetized i hoʻokaʻawale ʻia ma muli o kā lākou mau kikowaena magnetic disordered mua. No ka hoʻokō ʻana i ka saturation, pono e hoʻokō ʻia ke kūʻē ʻana mai ka neʻe ʻana a me ka hoʻololi ʻana o kēia mau kikowaena. Eia nō naʻe, i nā hihia inā ʻaʻole piha piha ka magnet a i ʻole ke koena o ka magnetization, aia nā ʻāpana o ka pā magnetic i loko. ʻO ka magnetizing i ka mua a i ʻole ka hoʻohuli ʻana i ka ʻaoʻao, pono kekahi mau wahi i ka hoʻohuli ʻana i ka magnetization, pono i ka lanakila ʻana o ka ikaika coercive intrinsic i kēia mau wahi. No laila, ʻoi aku ka ikaika o ka māla ma mua o ka manaʻo e pono ai no ka magnetization.

Mākēneki unsaturated a hapa demagnetized

Ka manawa hoʻouna: ʻAukake-18-2023