He mea paʻakikī ke hana ʻana i ka hana hoʻoheheʻe ʻana i hoʻokahi manawa.
ʻO ka orientation Magnet a me ka hoʻonohonoho ʻana: ʻo ka pauka magnetic o ka magnet ma hope o ka hoʻonohonoho ʻana, ka hoʻoheheʻe ʻana a me ke kaomi ʻana i ka isostatic i hana ʻia me ka blank density he haʻahaʻa loa, he kumu maikaʻi ʻole ia i ka hana ʻana, blank a loaʻa i nā pores hou aʻe, adsorption maʻalahi o ka nui o ke kinoea i loaʻa. wai, i ka hana aʻe e lawe mai i nā pilikia a me nā pilikia.Ma muli o ka haʻahaʻa haʻahaʻa o ka billet ʻōmaʻomaʻo, ʻoi aku ka nui o ka hoʻopōkole ʻana o ka sintering, ka deformation maʻalahi, ka unahi maʻalahi ma waho o ka hoʻomanawanui, no laila pono e hoʻopaʻa ʻia, a ʻoi aku ka kiʻekiʻe o ke kaʻina hana o ka ʻike.
Ma ke kaʻina hana o ka hoʻonohonoho magnet a me ka hoʻoheheʻe ʻana, pono e hele ka blank i nā kaʻina ʻelua ke hoʻokomo ʻia i loko o ka umu sintering:
Sintering a me ka ʻelemakule:
1. Hoʻopaʻa ʻia;I ka wā wela kiʻekiʻe no kekahi manawa, ka holomua ʻana o ka nui o ke kino sintered.Ua hoʻomaikaʻi ʻia ka pili pili mai 0.6-0.7 a i luna o 0.95.Hoʻohui hou ʻia ke ʻano o loko o kēlā me kēia palaoa.Hoʻemi ʻia ka hakahaka ma waena o nā ʻāpana, a hoʻokuʻu ʻia ka mahu wai i hoʻopili ʻia.
2. Kaʻelemakule:nā mākēneki NdFeb sinteredkiʻekiʻe ka nui o ka billet, kiʻekiʻe ka Br, akā ʻaʻole kiʻekiʻe ka coercivity a me ka huahana ikehu magnetic.ʻO kēia no ka mea ʻaʻole i hoʻopuehu pono ʻia ka pae waiwai neodymium.I ka wela o ka wā kahiko, hoʻopuni ka ʻāpana lahilahi neodymium i nā ʻāpana nui a hoʻokaʻawale iā lākou mai kekahi i kekahi, e hana ana i kahi hoʻonohonoho hoʻonohonoho maikaʻi e kūpono i ka coercivity kiʻekiʻe.Ma hope o ka ʻelemakule, hoʻohui iki ʻia ka Br o ka billet, akā pālua ka coercivity.
Pono e nānā ʻia a hoʻāʻo ʻia ka orientation a me ka hana ʻana o ka magnet ma hope o ka sintering blank products e like me kēia e hōʻoia ai i ke kūpono o ka hana o ka magnet:
A. ho'āʻo hana mākēneki ma hope o ke kiʻekiʻe wela sintering;
B. Density 'ike ma hope o kiʻekiʻe wela sintering;
C. Nānā unahiʻike ma hope o ka sintering wela kiʻekiʻe;
D. Ma hope o ke kiʻekiʻe wela sintering: kalapona, oxygen a me naikokene kālailai;
E. Ma hope o ke kahakiʻi ʻana i ka pihi demagnetization ma o ka mika magnetic e hoʻoholo ai inā ua māʻona ka blank me ke kūlana aupuni.Mai ka hapa nui oNdFeb magnetua hana ʻia me ka hao, ua maʻalahi ʻia ʻo NdFeb i ka wā e ʻike ʻia ai i ka ea a i ʻole ka mākū.Electroplating Mākēneki mauHe ala koʻikoʻi ia e hoʻonani i ke ʻano o nā magnet a hoʻohui i ka manawa mālama magnet.ʻO ka hana maʻemaʻe ma ka ʻaoʻao o ka zinc, zinc ʻeleʻele, nickel, keleawe, gula, kālā, epoxy resin.
He ʻokoʻa ka pale ʻana o ka ʻili mai kona kala, ʻaʻole like ka manawa mālama, loaʻa i kēlā me kēia mea nā pono a me nā hemahema.
1. Zinc: he keʻokeʻo kālā ke ʻano, hiki ke 12 a 48 mau hola o ka paʻakai paʻakai, hiki ke hoʻopaʻa ʻia me kahi hoʻohana kelu (e like me AB glue), inā maikaʻi ka hopena electroplating, hiki ke mālama ʻia no ʻelua a ʻelima mau makahiki. , He haʻahaʻa ke kumukūʻai electroplating.
2. Nickel: ka helehelena like me kuhiliʻole kala kala, waiho i loko o ka lewa helehelena 'aʻole maʻalahi i ka oxidize, maikai helehelena, maikai gloss, hiki ke 12 i 72 hola o ka paʻakai spray hoʻokolohua.ʻO ka hemahema, ʻaʻole maʻalahi ka hoʻohana ʻana i ke kāpili no ka hoʻopaʻa ʻana, ʻaʻole paʻa ke ʻano o ka lubrication adhesion, a maʻalahi ka hāʻule ʻana o ka uhi.No ka wikiwiki o ka oxidation, ʻoi aku ka nui o ka mākeke nickel - copper - nickel plating method e hana i nā hola 24-96 o ka paʻakai paʻakai.
3. ʻEleʻele Zinc: e like me ka mea kūʻai aku maʻamau koi o ka magnet surface ua hana ʻia i ʻeleʻele, aia ma ke kumu o ka galvanized chemical treatment e hoʻohui i kahi papa o ka mālama ʻeleʻele kiʻi, hiki i kēia kiʻi ke pāʻani i ka hopena o ka mālama magnet, hoʻonui i ka manawa paʻakai.Akā, ua maʻalahi kona helehelena, e nalowale kona hopena mālama.
4. Black Nickel: me nā koi like o ka ʻeleʻele zinc plating, aia ma ke kumu o ka nickel plating ma hope o ka hoʻomaʻamaʻa kemika e hoʻohui i kahi papa o ka mālama ʻeleʻele kiʻi.
5. ʻO ke gula: hoʻohana mau ʻia i nā mea hoʻonaninani hoʻonaninani, i kēia manawa ua nui nā mea hoʻonaninani lima kaulana loa.
6. Epoxy resin: i mea e hoʻonui ai i ka paʻakai paʻakai kū'ē i ka huahana, ua hoʻohuiʻia kahi papa o ka resin pena ma waho o ka magnet ma hope o ka nickel plating,ʻo ka hapa nui o kaʻeleʻele.He uhi ia me ka pale ʻana i ka corrosion maikaʻi ma waho o ka uhi magnet.ʻO ka hoʻonohonoho ʻana a me ka hoʻokumu ʻana i ke ʻano o ka magnet magnetization, ʻo ia ka mea e hoʻokalakupua i ka mea magnetic a i ʻole ka nele o ka magnetic e hoʻohui i ka magnetic.ʻO ka mea maʻamau, hiki ke hoʻokomo ʻia ka mea magnetic i loko o kahi māla magnetic ikaika i hoʻokumu ʻia e ka coil e hele ai ke au pololei, a ʻo ke kahua magnetic i loko o ka magnet e catalyzed e ke kahua magnetic waho.
Ka manawa hoʻouna: ʻAukake-06-2022