ʻIke ʻia nā makamaka i kamaʻāina i nā mea magneti i kēia manawa i ka mākeke mea magnetic ma ke ʻano he mea hana kiʻekiʻe a me ke kumu kūʻai. Hoʻohana ʻia lākou i nā ʻano like ʻoleʻoihana ʻenehana kiʻekiʻes, e pili ana i ka pale aupuni a me ka pūʻali koa, ʻenehana uila, a me nā lako lapaʻau, nā kaʻa, nā mea uila, nā mea uila, a me nā kahua ʻē aʻe. ʻOi aku ka hoʻohana ʻana iā lākou, ʻoi aku ka maʻalahi o ka ʻike ʻana i nā pilikia. Ma waena o kēia mau mea, ua loaʻa i ka demagnetization o ka hao-boron ikaika i nā hoʻonohonoho wela kiʻekiʻe.
ʻO ke ʻano kino o ka Ne iron boron e hoʻoholo ai i ke kumu e hoʻohaʻahaʻa ai ia i nā wahi wela kiʻekiʻe. Ma keʻano laulā, hiki i ka mea magnet ke hoʻohua i kahi māla magnetic no ka mea ʻo nā electrons i lawe ʻia e ka mea pono'ī e hoʻohuli a puni nā ʻātoma i kahi kuhikuhi kikoʻī, e hopena i ka ikaika o ke kahua magnetic i loaʻa ka hopena koke i nā mea pili e pili ana. Eia nō naʻe, pono e hoʻokō ʻia nā kūlana wela no nā electrons e hoʻohuli i nā ʻātoma ma kahi kikoʻī. ʻOkoʻa ka ʻae ʻana o ka mahana ma waena o nā mea magnetic. Ke piʻi kiʻekiʻe ka mahana, hele nā electrons mai ko lākou orbit mua, kahi e alakaʻi ai i ka haunaele. ʻO kēia Ma kēia wahi, e hoʻopau ʻia ke kahua magnetic kūloko o ka mea magnetic, e hopenademagnetizationHoʻoholo ʻia ka mahana demagnetization o ka boron hao e kona haku mele ʻana, ka ikaika o ke kahua magnetic, a me ka mōʻaukala mālama wela. ʻO ka pae wela demagnetization no ka boron hao gula ma waena o 150 a 300 degere Celsius (302 a me 572 degere Fahrenheit). I loko o kēia pae wela, e hoʻohaʻahaʻa mālie nā hiʻohiʻona ferromagnetic a hiki i ka nalowale loa.
Nui nā hopena kūleʻa i ka NeFeB magnet kiʻekiʻe-mehana demagnetization:
ʻO ka mea mua a me ka mea nui, ʻaʻole e wela i ka huahana magnet NeFeB. E mālama pono i kona wela koʻikoʻi. ʻO ka wela koʻikoʻi o ka NeFeB magnet maʻamau ma kahi o 80 degere Celsius (176 degere Fahrenheit). E hoʻoponopono i kona wahi hana i ka hikiwawe loa. Hiki ke hōʻemi ʻia ka demagnetization ma ka hoʻonui ʻana i ka mahana.
ʻO ka lua, ʻo ia ka hoʻomaka ʻana me ka ʻenehana e hoʻomaikaʻi i ka hana o nā huahana e hoʻohana ana i nā magnet hairpin i hiki iā lākou ke loaʻa i kahi ʻano mahana a ʻaʻole hiki ke maʻalahi i ka hopena o ke kaiapuni.
ʻO ke kolu, me ka huahana ikehu magnetic like, hiki iā ʻoe ke kohokiʻekiʻe coercivity mea. Inā hāʻule kēlā, hiki iā ʻoe ke hāʻawi i kahi liʻiliʻi o ka huahana ikehu magnetic i mea e hoʻokō ai i ka coercivity kiʻekiʻe.
PS: Loaʻa nā ʻano like ʻole o kēlā me kēia mea, no laila e koho i ka mea kūpono a me ka waiwai, a e noʻonoʻo pono i ka wā e hoʻolālā ai, i ʻole e lilo ia i pohō!
Manaʻo ʻoe makemake pū kekahi: Pehea e hōʻemi ai a pale aku i ka demagnetization thermal a me ka oxidation o ka boron hao, e hopena ai i ka emi ʻana o ka coercivity?
Pane: He pilikia kēia me ka thermal demagnetization. He paʻakikī maoli nō ka hoʻomalu ʻana. E noʻonoʻo pono i ka mālama ʻana i ka mahana, ka manawa a me ka demagnetization.
I ka manawa hea e haʻalulu ai ka hao-boron magnet a lilo i demagnetized?
ʻAʻole e hoʻoneʻe ʻia ka magnetism o ka magnet paʻa ma muli o ka haʻalulu pinepine, a ʻaʻole e hoʻopau ʻia ke kaʻa kaʻa kiʻekiʻe inā hiki i ka wikiwiki ke 60,000 rpm.
Hoʻopili ʻia a kaʻana like ʻia ka ʻike ma luna nei e Hangzhou Magnet Power Technology Co., Ltd. Inā he mau nīnau magnet ʻē aʻe kāu, e ʻoluʻolu e leka uila.e kūkākūkā i ka lawelawe mea kūʻai aku ma ka pūnaewele!
Ka manawa hoʻouna: Oct-23-2023
