Sida Looga Hortago Demagnetization of U Qaabaysan Magnets ee Deegaanka Kulul Sare

Magnets neodymium U-qaabeeyaBixi feejignaan birlabeed ah oo aan isbarbardhigi karin - ilaa kulaylku ka dhaco. Codsiyada sida matoorada, dareemayaasha, ama mishiinada warshadaha ee ka shaqeeya in ka badan 80°C, demagnetization-ka aan laga noqon karin ayaa curyaamin kara waxqabadka. Marka U-magnet ay lumiso kaliya 10% qulqulka qulqulka, beerta xoogga leh ee farqiga u ah ayaa burbura, taasoo keenta fashilka nidaamka. Waa kan sida loo difaaco naqshadahaaga:

Waa maxay sababta kuleylku u dilo Magnets-kaaga dhaqsaha badan

Neodymium magnets-ka ayaa hoos u dhiga marka tamarta kulaylka ay carqaladeyso isku-habboonaanta atomiga. U-qaababka waxay la kulmaan khataro gaar ah:

• Cadaadis joomatari: laabashadu waxay abuurtaa dhibco xiisad gudaha ah oo u nugul ballaarinta kulaylka.
• Isku-duubnaanta Flux: Cufnaanta goobta sare ee farqiga waxay dedejisaa lumista tamarta ee heerkulka sare.
• Asymmetric Failure: Hal lug oo waxyeeleysa ka hor inta kan kale uusan dheeli tirin wareegga magnetic.

Xeeladda Difaaca ee 5-da dhibcood

1. Xulashada Qalabka: Ka bilow darajada saxda ah

Dhammaan NdFeB maaha kuwo siman. Mudnaanta sii darajooyinka qasabka-sare (taxanaha H):

2. Gaashaanka kulaylka: Jebiyo Jidka kulaylka

Daraasad Kiis: Sameeyaha matoorka servo wuxuu hoos u dhigay guuldarrooyinka U-magnet 92% ka dib markii lagu daray 0.5mm mica spacers inta u dhaxaysa gariiradaha iyo birlabadaha.

3. Naqshadaynta Wareegga Magnetic: Thermodynamics ka baxsan

• Flux Keepers: Taarikada birta ee dhexda U-gap waxay ilaalisaa dariiqa qulqulka inta lagu jiro shoogga kulaylka.
• Magnetization qayb ahaan: Ku orod magnets 70-80% buuxsamayn si aad uga baxdo "qolka madaxa" ee socodka kulaylka.
• Naqshado Xidhan: Ku dheji U-magnets guryaha birta ah si loo yareeyo soo-gaadhista hawada oo loo dejiyo qulqulka.

"Khaye si fiican loo nashqadeeyey ayaa hoos u dhigaya khatarta demagnetization 40% at 150 ° C vs. Bare U-magnets."
- Ganacsiga IEEE ee Magnetics

4. Ilaalada Hawleed

• Qaloocyada leexinta: Waligaa ha dhaafin xadka heerkulka fasalka (eeg jaantuska hoose).
• Korjoogteynta kulaylka: Ku dheji dareemayaasha u dhow lugaha U-lugaha si loo helo ogeysiisyada waqtiga-dhabta ah.
• Iska ilaali baaskiilada: kululaynta/qaboojinta degdega ah waxay sababtaa microcracks → demagnetization degdeg ah.

Tusaalaha qalooca ee leexinta (Fasalka N40SH):

Khasaare │ 0% │ 8% │ 15% │ 30%*

5. Dahaarka Sare & Isku-xidhka

• Xoojinta Epoxy: Waxay buuxisaa microcracks balaarinta kulaylka.
• Dahaarka Heerkulka Sare: Parylene HT (≥400°C) waxay ka sarraysaa dahaadhka caadiga ah ee NiCuNi oo ka sarreeya 200°C.
• Xulashada Xabagta: Isticmaal epoxies-ka-buuxsan (kuleylka adeegga>180°C) si aad uga hortagto kala go'a magnetka.

Calamada Cas: Magnet-kaaga U Magnet Miyuu Fashilmay?

Soo ogow demagnetization heerka hore:

1. Asymmetry Field:> 10% farqiga udhaxeeya lugaha U-lug (ku cabir baaritaanka Hall).
2. Heerkulka gurguurta: Magnet waxa uu dareemaa kulayl ka badan inta ku xeeran – waxa ay tusinaysaa khasaaraha hadda jira.
3. Dhibicaha Waxqabadka: Matoorada ayaa lumiya qulqulka, dareemayaasha ayaa muujinaya qulqulaya, kala soocida waxay seegaan wasakhowga ferrous.

Marka Kahortaggu guuldareysto: Xeeladaha Badbaadinta

1. Dib-u-magnetization: Waa suurtogal haddii walxaha aan dhisme ahaan dhaawacmin (waxay u baahan yihiin> 3T garoonka garaaca wadnaha).
2. Dib-u-daboosha: Ka saar dahaadhka daxalka leh, mar kale marso daahan heerkul sare leh.
3. Hab-maamuuska Beddelka: Ku beddel darajooyinka SH/UH + hagaajinta kulaylka.

Qaabka Guuleysiga

Fasalka Sare ee Hci + Dejinta kulaylka + Naqshadaynta Wareegga Wacan = Kulayl u adkaysta U Magnets

Magnets neodymium U-qaabeeya waxay ku koraan bay'ad adag marka aad:

1. U dooro SH/UH darajooyinka diin ahaan> 120°C codsiyada
2. Ka sooc ilaha kulaylka leh xannibaadyada hawada/ dhoobada
3. Ku deji qulqulka hayeyaasha ama guryaha
4. Kala soco heerkulka farqiga u dhexeeya