Yadda ake Hana Demagnetization na Magnets Siffar U a cikin Mahalli masu zafi

Neodymium maganadiso U-dimbin yawaisar da mayar da hankali kan maganadisu mara misaltuwa – har sai zafi ya faɗo. A aikace-aikace kamar injina, na'urori masu auna firikwensin, ko injunan masana'antu da ke aiki sama da 80°C, lalatawar da ba za a iya jurewa ba na iya gurgunta aiki. Lokacin da U-magnet ya rasa kashi 10 cikin 100 na jujjuyawar sa, filin da aka tattara a cikin gibinsa ya rushe, yana haifar da gazawar tsarin. Ga yadda ake kare ƙirarku:

Me Yasa Zafi Ke Kashe U Magnets Da Sauri

Neodymium maganadiso demagnetize a lokacin da thermal makamashi rushe da atomic jeri. Siffofin U suna fuskantar haɗari na musamman:

• Damuwar Geometric: Lankwasawa yana haifar da wuraren tashin hankali na ciki masu rauni ga faɗaɗa zafi.
• Flux Concentration: Babban yawan fili a cikin tazarar yana haɓaka asarar kuzari a matsanancin yanayi.
• Kasawar asymmetric: Ƙafa ɗaya yana lalata ƙafãfunsa kafin ɗayan ya kasa daidaita da'irar maganadisu.

Dabarun tsaro mai maki 5

1. Zaɓin Abu: Fara da Makin Dama

Ba duk NdFeB ke daidaita ba. Ba da fifiko ga manyan matakan tilastawa ( jerin H):

2. Garkuwar zafi: Karya Hanyar Zafi

Nazarin Harka: Mai kera motar servo ya rage gazawar U-magnet da kashi 92% bayan ƙara 0.5mm mica spacers tsakanin coils da maganadiso.

3. Magnetic Circuit Design: Outsmart Thermodynamics

• Masu kiyaye Flux: Farantin karfe a fadin U-gap suna kula da hanyar juzu'i yayin girgizar zafi.
• Sashe na Magnetization: Gudun maganadisu a kashi 70-80% na cikakken jikewa don barin "ɗakin kai" don zazzagewar zafi.
• Zane-zanen Rufe-Rufe: Saka U-magnets a cikin gidajen karfe don rage bayyanar iska da daidaita juzu'i.

"Mai tsare-tsaren da aka tsara da kyau yana yanke haɗarin demagnetization da 40% a 150 ° C vs. bare U-magnets."
- Ma'amaloli na IEEE akan Magnetic

4. Tsaron Aiki

• Ƙunƙarar Rarraba: Kar a taɓa wuce ƙayyadaddun ƙayyadaddun yanayin zafi (duba ginshiƙi a ƙasa).
• Kulawa da thermal: Haɗa na'urori masu auna firikwensin kusa da ƙafafu U-ƙafa don faɗakarwa na ainihi.
• Guji hawan keke: Saurin dumama/sanyi yana haifar da microcracks → saurin lalacewa.

Misalin Lantarki (N40SH Grade):

Br Asarar │ 0% │ 8% │ 15% │ 30%*

5. Advanced Coatings & Bonding

• Epoxy Reinforcements: Cika microcracks daga haɓakar thermal.
• Rubutun Tsayi mai Tsari: Parylene HT (≥400°C) ya fi daidaitaccen platin NiCuNi sama da 200°C.
• Zaɓin Adhesive: Yi amfani da epoxies masu cika gilashin (zafin sabis>180°C) don hana tsinkewar maganadisu.

Tutocin Ja: Shin Magnet ɗinku na U yana Kasawa?

Gano lalatawar matakin farko:

1. Filin asymmetry:> 10% bambancin juyi tsakanin U-kafa (auna tare da binciken Hall).
2. Zazzabi: Magnet yana jin zafi fiye da kewaye - yana nuna asara na yanzu.
3. Saukar da Aiki: Motoci sun yi hasarar juzu'i, na'urori masu auna firikwensin suna nuna tuƙi, masu rarrabawa suna rasa gurɓataccen ƙarfe.

Lokacin Rigakafin Ya Kasa: Dabarun Ceto

1. Sake haɓakawa: Mai yuwuwa idan abu bai lalace ba (yana buƙatar> Filin bugun bugun jini 3T).
2. Sake shafawa: Tatsi ruɓaɓɓen platin, sake shafa shafi mai zafi.
3. Ka'idar Sauyawa: Canja tare da maki SH/UH + haɓaka yanayin zafi.

Tsarin Nasara

Babban Matsayin Hci + Ƙirar zafi + Ƙirƙirar Zane mai Wayo = U Magnets masu jure zafi

Neodymium mai siffar U-dimbin maganadisu suna bunƙasa a cikin matsananciyar yanayi lokacin da kuke:

1. Zaɓi maki SH/UH na addini don aikace-aikacen>120°C
2. Ware daga tushen zafi tare da shingen iska / yumbu
3. Tsaya juzu'i tare da masu kiyayewa ko gidaje
4. Saka idanu zafin jiki a tazarar