Iko kugona kwemagineti echigarire kutsigira ekunze magineti imhaka yekristaro anisotropy mukati meiyo magineti iyo "inokiya" madiki magineti munzvimbo.Kana iyo yekutanga magineti yangogadzwa, zvinzvimbo izvi zvinoramba zvakafanana kudzamara simba rinopfuura rakakiiwa remagineti raiswa, uye simba rinodiwa kuvhiringa magineti anogadzirwa nemagineti echigarire anosiyana pane chimwe nechimwe chinhu.Magineti echigarire anogona kuburitsa yakanyanyisa kumanikidzana (Hcj), kuchengetedza domain kurongeka pamberi peakakwirira ekunze magineti minda.

Kugadzikana kunogona kutsanangurwa seinodzokorora magineti echinhu pasi pemamiriro akatsanangurwa pamusoro pehupenyu hwemagineti.Zvinhu zvinokanganisa kugadzikana kwemagineti zvinosanganisira nguva, tembiricha, shanduko mukusada, yakashata magineti minda, mwaranzi, kuvhunduka, kushushikana, uye vibration.

Nguva haina mhedzisiro pamagetsi echigarire emazuva ano, ayo zvidzidzo zvakaratidza shanduko nekukurumidza mushure memagnetization.Shanduko idzi, dzinozivikanwa se "magnetic creep," dzinoitika kana isina kugadzikana magineti domains inokanganiswa nekupisa kana magineti simba rekuchinja, kunyangwe munzvimbo dzakagadzikana dzinopisa.Kusiyana uku kunoderera sezvo nhamba yematunhu asina kugadzikana inoderera.

Rare pasi magineti haafanire kuona chiitiko ichi nekuda kwekumanikidza kwavo kwakanyanya.Ongororo yekuenzanisa yenguva yakareba maringe nemagnetic flux inoratidza kuti magineti achangogadzirwa echigarire anorasikirwa nekashoma kemagineti flux nekufamba kwenguva.Kwemaawa anopfuura 100,000, kurasikirwa kwesamarium cobalt zvinhu zviri zero, ukuwo kurasikirwa kweiyo yakaderera permeability Alnico zvinhu zvisingasviki 3%.

Mhedzisiro yetembiricha inowira mumapoka matatu: kurasikirwa kunodzoserwa, kurasikirwa kusingadzoreki asi kunodzoreka, uye kurasikirwa kusingadzoreki uye kusinga gadziriswe.

Reversible Losses: Uku ndiko kurasikirwa kunodzoreredza kana magineti yadzokera kune yayo yekutanga tembiricha, kudzikamisa magineti hakugone kubvisa kurasikirwa kunodzoreredzwa.Kurasikirwa kunodzoserwa kunotsanangurwa neyakagadziriswa tembiricha coefficient (Tc), sezvakaratidzwa mutafura iri pasi apa.Tc inoratidzwa sechikamu padhigirii Celsius, nhamba idzi dzinosiyana negiredhi chaiyo yechinhu chimwe nechimwe, asi inomiririra kirasi yezvinhu zvakazara.Izvi zvinodaro nekuti tembiricha coefficients yeBr neHcj akasiyana zvakanyanya, saka demagnetization curve ichava ne "inflection point" pakupisa kwakanyanya.

Kurasikirwa kusingadzoreki asi kunodzoreredzwa: Kurasikirwa uku kunotsanangurwa sechikamu che demagnetization yemagnet nekuda kwekuratidzwa kune yakakwira kana yakaderera tembiricha, kurasikirwa uku kunogona chete kudzoserwa nere-magnetization, iyo magineti haigone kupora kana tembiricha yadzokera kune yayo yekutanga kukosha.Kurasikirwa uku kunoitika kana nzvimbo yekushanda yemagineti iri pazasi peiyo inflection point ye demagnetization curve.Iyo inoshanda inogara magineti dhizaini inofanirwa kunge iine magineti wedunhu umo magineti anoshanda ane permeability yakakwira kupfuura inflection point ye demagnetization curve pane inotarisirwa tembiricha yepamusoro, inodzivirira shanduko yekushanda pakupisa kwakanyanya.

Irreversible Irrecoverable Loss: Magnets akafumurwa kune yakanyanya kupisa tembiricha anochinja metallurgical isingagone kudzoserwa neremagnetization.Tafura inotevera inoratidza tembiricha yakakosha yezvinhu zvakasiyana-siyana, apo: Tcurie ndiyo tembiricha yeCurie apo iyo yakakosha magineti nguva inoitwa randomized uye zvinhu zviri demagnetized;Tmax ndiyo yakanyanya kushanda tembiricha yekushandisa yezvinhu zvekutanga muchikamu chese.

Magineti anoitwa kuti tembiricha igadzikane nekubvisa magineti muchidimbu nekuvaisa kune tembiricha yepamusoro nenzira inodzorwa.Kudzikira kushoma kwe flux density kunonatsiridza kugadzikana kwemagineti, sezvo madomasi akatariswa zvishoma ndiwo ekutanga kurasikirwa nemaitiro.Magineti akagadzikana akadaro anoratidza anogara aine magineti flux kana akafumurwa kune yakaenzana kana kudzika tembiricha.Pamusoro pezvo, batch yakagadzikana yemagineti icharatidza yakaderera flux kusiyanisa kana ichienzaniswa kune imwe neimwe, sezvo kumusoro kwebhero curve ine yakajairwa kusiyanisa maitiro ichave padyo neiyo batch's flux kukosha.