Yuav Ua Li Cas Tiv Thaiv Kev Tshem Tawm Cov Hlau Nplaum U Zoo Li Hauv Cov Chaw Kub Siab

Cov hlau nplaum neodymium zoo li Uxa cov khoom sib nqus uas tsis muaj qhov sib piv - kom txog thaum cua sov tawm. Hauv cov ntawv thov xws li lub cev muaj zog, cov sensors, lossis cov tshuab ua haujlwm siab dua 80 ° C, kev tshem tawm tsis rov qab tuaj yeem ua rau kev ua haujlwm tsis zoo. Thaum U-magnet poob tsuas yog 10% ntawm nws cov flux, lub teb sib xyaw hauv nws qhov sib txawv tawg, ua rau lub kaw lus tsis ua haujlwm. Nov yog yuav ua li cas los tiv thaiv koj cov qauv tsim:

Vim li cas cua sov tua U Magnets sai dua

Cov hlau nplaum neodymium demagnetize thaum lub zog thermal cuam tshuam lawv cov atomic aligned. U-shapes ntsib cov kev pheej hmoo tshwj xeeb:

• Kev Nyuaj Siab Geometric: Kev khoov ua rau muaj cov ntsiab lus nruj sab hauv uas tsis yooj yim rau kev nthuav dav thermal.
• Flux Concentration: Qhov ceev ntawm thaj chaw siab hauv qhov sib txawv ua rau lub zog poob sai dua thaum kub siab.
• Kev Ua Tsis Tau Zoo Sib Xws: Ib ceg demagnetizing ua ntej lwm ceg tsis sib npaug ntawm lub voj voog magnetic.

Lub Tswv Yim Tiv Thaiv 5-Point

1. Kev Xaiv Khoom Siv: Pib nrog Qib Zoo

Tsis yog txhua NdFeB zoo ib yam. Muab qhov tseem ceeb rau qib siab coercivity (H series):

2. Kev Tiv Thaiv Kub: Ua Rau Txoj Kev Kub Tsis Zoo

Kev Kawm Txog Cov Ntaub NtawvIb lub tuam txhab ua lub cev muaj zog servo tau txo qhov ua tsis tiav ntawm U-magnet los ntawm 92% tom qab ntxiv 0.5 hli mica spacers ntawm cov kauj thiab cov hlau nplaum.

3. Kev Tsim Qauv Hluav Taws Xob Sib Nqus: Ua Tau Zoo Dua Thermodynamics

• Cov Khoom Khaws Flux: Cov phaj hlau hla U-gap tswj txoj kev flux thaum lub sijhawm thermal shock.
• Kev Sib Nqus Ib Nrab: Khiav cov hlau nplaum ntawm 70-80% ntawm qhov saturation tag nrho kom tawm "headroom" rau thermal drift.
• Cov Qauv Kaw-Loop: Muab cov hlau nplaum U tso rau hauv cov tsev hlau kom txo qhov raug cua thiab tswj cov dej ntws.

"Tus neeg zov lub qhov rooj uas tsim tau zoo yuav txo tau qhov kev pheej hmoo ntawm kev tshem tawm cov hlau nplaum los ntawm 40% ntawm 150°C piv rau cov hlau nplaum U uas tsis muaj dab tsi."
- IEEE Kev Ua Lag Luam ntawm Magnetics

4. Kev Tiv Thaiv Kev Ua Haujlwm

• Cov Kab Derating: Tsis txhob tshaj qhov txwv kub ntawm qib tshwj xeeb (saib daim ntawv qhia hauv qab no).
• Kev Soj Ntsuam Kub: Muab cov sensors tso ze ntawm U-ceg rau cov lus ceeb toom tiag tiag.
• Tsis txhob caij tsheb kauj vab: Kev ua kom sov/txias sai ua rau muaj cov kab nrib pleb me me → kev tshem tawm cov hlau nplaum sai dua.

Piv txwv ntawm Derating Curve (N40SH Qib):

Kev Poob Qis │ 0% │ 8% │ 15% │ 30%*

5. Kev Txheej Txheem Siab Tshaj Plaws & Kev Sib Txuas Lus

• Cov Khoom Siv Epoxy: Sau cov kab nrib pleb me me los ntawm kev nthuav dav thermal.
• Cov Txheej Txheem Kub Siab: Parylene HT (≥400°C) ua tau zoo dua li cov txheej txheem NiCuNi plating saum 200°C.
• Kev Xaiv Cov Nplaum: Siv cov epoxies uas muaj iav (qhov kub ntawm kev pabcuam >180°C) kom tiv thaiv kom tsis txhob muaj hlau nplaum tawg.

Cov Cim Liab: Koj Lub U Magnet Puas Ua Tsis Tau Zoo?

Tshawb nrhiav kev tshem tawm cov hlau nplaum thaum ntxov:

1. Kev Tsis Sib Xws ntawm Thaj Chaw: >10% qhov sib txawv ntawm cov flux ntawm U-ceg (ntsuas nrog Hall probe).
2. Kub Nce: Hlau nplaum kub dua li ib puag ncig - qhia txog kev poob tam sim no.
3. Kev Ua Tau Zoo Poob Qis: Cov cav poob lub zog, cov sensors qhia txog kev hloov pauv, cov separators tsis pom cov pa phem ferrous.

Thaum Tiv Thaiv Tsis Tau: Cov Tswv Yim Cawm Seej

1. Rov ua kom muaj hlau nplaum dua: Ua tau yog tias cov khoom tsis puas tsuaj rau lub cev (yuav tsum muaj >3T pulse field).
2. Rov txheej dua: Tshem tawm cov plating corroded, rov pleev cov txheej txheem kub siab.
3. Cov Txheej Txheem Hloov: Hloov nrog SH/UH qib + kev txhim kho thermal.

Tus Qauv Yeej

Qib Hci Siab + Thermal Buffering + Smart Circuit Design = Cov Hlau Nplaum U Uas Tiv Tau Kub

Cov hlau nplaum neodymium zoo li tus U vam meej hauv qhov chaw nyuaj thaum koj:

1. Xaiv cov qib SH/UH kom haum rau cov ntawv thov >120°C
2. Cais tawm ntawm cov chaw kub nrog cov cua / ceramic barriers
3. Ua kom cov dej ntws ruaj khov nrog cov keepers lossis cov tsev nyob
4. Saib xyuas qhov kub thiab txias ntawm qhov sib txawv