Izibuthe ze-NdFeB, obeye aziwe njengoizibuthe ze-neodymium, baphakathi komazibuthe abanamandla nabasetshenziswa kakhulu emhlabeni. Zenziwe ngenhlanganisela ye-neodymium, insimbi, ne-boron, okuphumela kumandla kazibuthe anamandla. Nokho, njenganoma yimuphi omunye uzibuthe, NdFeB ozibuthe usengozini demagnetization. Kulesi sihloko, sizoxoxa ngezinto eziyinhloko ezithinta ukukhishwa kazibuthe kwamazibuthe be-NdFeB.
Izinga lokushisa lingesinye sezici eziyinhloko ezingadala demagnetization kumazibuthe NdFeB. Lezi zidonsa zine-aizinga lokushisa eliphezulu lokusebenza, ngale kwalokho baqala ukulahlekelwa izakhiwo zabo kazibuthe. Izinga lokushisa le-Curie yiphuzu lapho okubalulekile kazibuthe kungena khona ukuguqulwa kwesigaba, okuholela ekwehleni okuphawulekayo kokuzibuthe kwawo. Ngozibuthe be-NdFeB, izinga lokushisa le-Curie licishe libe ngu-310 degrees Celsius. Ngakho-ke, ukusebenzisa uzibuthe emazingeni okushisa aseduze noma ngaphezulu kwalo mkhawulo kungaholela ekuphelelweni uzibuthe.
Esinye isici esibalulekile esithinta ukukhishwa kazibuthe kwamazibuthe be-NdFeB insimu yangaphandle kazibuthe. Ukuveza uzibuthe endaweni enamandla kazibuthe ephikisayo kungabangela ukuthi ilahlekelwe ukudonsa kwayo. Lesi simo saziwa ngokuthi i-demagnetizing. Amandla nobude benkambu yangaphandle kudlala indima ebalulekile enqubweni ye-demagnetization. Ngakho-ke, kubalulekile ukuphatha omazibuthe be-NdFeB ngokucophelela futhi ugweme ukuzibeka endaweni eqinile kazibuthe engafaka engcupheni izakhiwo zabo kazibuthe.
Ukugqwala nakho kuyisici esibalulekile esingaholela ekunqanyulweni kozibuthe be-NdFeB. Lawa mamagnets enziwe ngama-alloys ensimbi, futhi uma echayeke kumswakama noma amakhemikhali athile, angagqwala. Ukugqwala kwenza buthaka ubuqotho besakhiwo sikazibuthe futhi kungaholela ekulahlekelweni kwamandla kazibuthe. Ukuvimbela lokhu, izimbotshana ezifana ne-nickel, i-zinc, noma i-epoxy zivame ukusetshenziswa ukuze kuvikelwe omazibuthe kumswakama nezinto ezonakalisayo.
Ukucindezelwa komshini kungenye into engase ibangele demagnetization kumamagnet we-NdFeB. Ukucindezela okukhulu noma umthelela kungaphazamisa ukuqondanisa kwezizinda kazibuthe ngaphakathi kukazibuthe, okuholela ekwehleni kwamandla kazibuthe. Ngakho-ke, kubalulekile ukuphatha omazibuthe be-NdFeB ngokucophelela ukuze ugweme ukusebenzisa amandla amaningi noma ukuzifaka emiphumeleni engazelelwe.
Okokugcina, isikhathi ngokwaso singabangela kancane kancane demagnetization kumazibuthe we-NdFeB. Lokhu kwaziwa ngokuthi ukuguga. Ngokuhamba kwesikhathi eside, izici kazibuthe zikazibuthe zingonakala ngokwemvelo ngenxa yezici ezihlukahlukene ezifana nokuguquguquka kwezinga lokushisa, ukuchayeka ezindaweni ezingaphandle kazibuthe, nokucindezeleka komshini. Ukuze unciphise imiphumela yokuguga, ukuhlolwa okuvamile nokuqapha izakhiwo kazibuthe kuyanconywa.
Sengiphetha, izici eziningana zingathinta ukukhishwa kazibuthe kozibuthe be-NdFeB, okuhlanganisa izinga lokushisa, izindawo ezingaphandle kazibuthe, ukugqwala, ukucindezeleka kwemishini, nokuguga. Ngokuqonda nokuphatha ngempumelelo lezi zici, kungenzeka ukulondoloza izakhiwo eziqinile zikazibuthe ze-NdFeB futhi andise isikhathi sabo sokuphila. Ukuphatha ngendlela efanele, ukulawulwa kwezinga lokushisa, kanye nokuvikela ezindaweni ezibolayo yizinto ezibalulekile ezicatshangelwayo ekugcineni ukusebenza kukazibuthe.
Isikhathi sokuthumela: Sep-22-2023