How to Prevent Demagnetization of U Shaped Magnets in High-Heat Environments

Ozibuthe be-neodymium abamise okwe-Uletha ukugxila kukazibuthe okungenakuqhathaniswa - kuze kufike ukushisa. Kuzinhlelo zokusebenza ezifana namamotho, izinzwa, noma imishini yezimboni esebenza ngaphezu kuka-80°C, ukuwohloka kazibuthe okungahlehliseki kungakhubaza ukusebenza. Lapho i-U-magnet ilahlekelwa yi-10% nje yokuguquguquka kwayo, inkambu egxilile esikhaleni sayo iyawa, okubangele ukwehluleka kwesistimu. Nansi indlela yokuvikela imiklamo yakho:

Kungani Ukushisa Kubulala U Magnets Ngokushesha

Ozibuthe be-Neodymium bayeka uzibuthe lapho amandla ashisayo ephazamisa ukuqondana kwawo kwe-athomu. Ama-U-shapes abhekana nezingozi eziyingqayizivele:

Ukucindezelwa Kwejiyomethri: Ukugoba kudala izindawo zokungezwani zangaphakathi zibe sengozini yokwanda okushisayo.
I-Flux Concentration: Ukuminyana kwenkambu ephezulu kugebe kusheshisa ukulahleka kwamandla emazingeni okushisa aphakeme.
I-Asymmetric Failure: Umlenze owodwa ukhipha uzibuthe ngaphambi komunye ungalinganisi isekethe kazibuthe.

Isu Lokuvikela elinamaphuzu angu-5

1. Ukukhetha Okubalulekile: Qala ngeBanga Elilungile

Akuwona wonke ama-NdFeB alinganayo. Beka phambili amamaki okuphoqeleka okuphezulu (uchungechunge lwe-H):

Ibanga	I-Max Op Temp	I-Intrinsic Coercivity (Hci)	Sebenzisa Ikesi
N42	80°C	≥12 kOe	Gwema ekushiseni
I-N42H	120°C	≥17 kOe	Izimboni ezijwayelekile
I-N38SH	150°C	≥23 kOe	Ama-motor, ama-actuator
N33UH	180°C	≥30 kOe	Izimoto/i-aerospace
Ithiphu Yephrofayili: Amamaki e-UH (Ultra High) kanye ne-EH (Extra High) adela amandla athile okumelana nokushisa okungu-2-3× okuphezulu.

2. Isivikelo Esishisayo: Yephula Indlela Yokushisa

Iqhinga	Indlela Esebenza Ngayo	Ukusebenza kahle
Izikhala Zomoya	Hlukanisa uzibuthe emthonjeni wokushisa	↓10-15°C ezindaweni zokuxhumana
Ama-Insulators ashisayo	Izikhala zeCeramic/polyimide	Ivimbela ukuqhuba
Ukupholisa Okusebenzayo	Amasinki okushisa noma umoya ophoqelelwe	↓20-40°C ezindaweni ezivalekile
I-Reflective Coatings	Izendlalelo zegolide/ze-aluminium	Ibonisa ukushisa okukhazimulayo

Ucwaningo lwesigameko: Umenzi we-servo motor wehlise ukuhluleka kukazibuthe we-U ngo-92% ngemva kokwengeza izikhala zemica engu-0.5mm phakathi kwamakhoyili nozibuthe.

3. I-Magnetic Circuit Design: I-Outsmart Thermodynamics

Abagcini be-Flux: Amapuleti ensimbi ngaphesheya kwe-U-gap agcina indlela eguquguqukayo ngesikhathi sokushaqeka okushisayo.
I-Magnetization Engxenye: Gijimisa omazibuthe ku-70-80% wokugcwala okugcwele ukuze ushiye "i-headroom" ukuze uthole ukukhukhuleka okushisayo.
Imiklamo Yeluphu Evaliwe: Shumeka omazibuthe be-U ezindlini zensimbi ukuze unciphise ukuchayeka komoya futhi uzinze ukugeleza.

"Unozinti oklanywe kahle unciphisa ingozi yokususa uzibuthe ngo-40% ku-150 ° C uma iqhathaniswa nezizibuthe ze-U ezingenalutho."
- IEEE Transactions on Magnetics

4. Ukuvikela Ukusebenza

I-Derating Curves: Ungalokothi weqe imikhawulo yezinga lokushisa elithile (bona ishadi ngezansi).
Ukuqapha Okushisayo: Shumeka izinzwa eduze kwe-U-legs ukuze uthole izexwayiso zesikhathi sangempela.
Gwema Ukuhamba Ngebhayisikili: Ukushisisa/ukupholisa okusheshayo kubangela ama-microcracks → ukususwa kazibuthe okusheshayo.

I-Derating Curve Example (Ibanga le-N40SH):

Izinga lokushisa (°C) │ 20° │ 100° │ 120° │ 150°

I-Br Loss │ 0% │ 8% │ 15% │ 30%*

5. I-Advanced Coatings & Bonding

I-Epoxy Reinforcements: Igcwalisa ama-microcracks kusuka ekwandiseni okushisayo.
I-High-Temp Coatings: I-Parylene HT (≥400°C) idlula i-NiCuNi evamile yokucwenga ngaphezu kuka-200°C.
Ukukhetha Okunamathelayo: Sebenzisa ama-epoxies agcwele ingilazi (izinga lokushisa> 180°C) ukuze uvimbele ukuhlangana kukazibuthe.

Amafulegi Abomvu: Ingabe I-U Magnet Yakho Iyahluleka?

Thola i-demagnetization yesigaba sangaphambi kwesikhathi:

I-Field Asymmetry: >10% umehluko we-flux phakathi kwe-U-legs (linganisa nge-Hall probe).
I-Temperature Creep: I-Magnet izwakala ishisa kakhulu kunendawo ezungezile - ikhombisa ukulahlekelwa kwamanje kwe-eddy.
Ukwehla Kokusebenza: Amamotho alahlekelwa yitorque, izinzwa zikhombisa ukukhukhuleka, izihlukanisi zigeja ukungcola okusansimbi.

Lapho Ukuvimbela Kuhluleka: Amaqhinga Okusindisa

Ukuphinda uzibuthe: Kuyenzeka uma impahla yonakale ingalimele (idinga>3T inkambu yokushaya kwenhliziyo).
Ukunamathisela kabusha: I-strip plating egqwalile, phinda usebenzise okokunamathela okushisa okuphezulu.
I-Replacement Protocol: Shintshanisa ngamamaki e-SH/UH + ukuthuthukiswa kwe-thermal.

I-Winning Formula

Ibanga eliphezulu le-Hci + Ukubhafa Okushisayo + Idizayini Yesekhethi Ehlakaniphile = Izibuthe ze-U Ezingazweli Ukushisa

Ozibuthe be-neodymium abamise u-U bayachuma ezindaweni ezinzima uma:

Khetha amamaki e-SH/UH ngokwenkolo ukuze uthole>120°C izinhlelo zokusebenza
Zihlukanise nemithombo yokushisa enezithiyo zomoya/ze-ceramic
Zinzisa ukuguquguquka nabagcini noma izindlu
Gada izinga lokushisa esikhaleni

Iphrojekthi Yakho Yangokwezifiso Yezibuthe ye-Neodymium

Singanikela ngezinsizakalo ze-OEM/ODM zemikhiqizo yethu. Umkhiqizo ungenziwa ngokwezifiso ngokuya ngezidingo zakho eziqondene nawe, okuhlanganisa usayizi, umumo, ukusebenza, kanye nokunameka. sicela unikeze imibhalo yakho yokuklama noma usitshele imibono yakho futhi ithimba lethu le-R&D lizokwenza okusele.