Yadda Ake Hana Rushewar Magnets Masu Siffa U a Muhalli Mai Zafi Mai Tsanani

maganadisu na neodymium mai siffar Uyana isar da mayar da hankali kan maganadisu mara misaltuwa - har sai zafi ya kama. A cikin aikace-aikace kamar injina, na'urori masu auna firikwensin, ko injinan masana'antu da ke aiki sama da 80°C, rushewar da ba za a iya juyawa ba na iya gurgunta aiki. Lokacin da U-magnet ya rasa kashi 10% kawai na kwararar sa, filin da aka tattara a cikin gibin sa zai ruguje, wanda ke haifar da gazawar tsarin. Ga yadda za ku kare ƙirar ku:

Me yasa Zafi ke Kashe Magnets na U da Sauri

Magnet na Neodymium yana rushewa lokacin da makamashin zafi ya kawo cikas ga daidaiton atomic ɗinsu. Siffofi U suna fuskantar haɗari na musamman:

• Damuwa ta Geometric: Lankwasawa yana haifar da wuraren tashin hankali na ciki waɗanda ke fuskantar barazanar faɗaɗa zafi.
• Yawan Fitowa: Yawan filin da ke cikin ramin yana hanzarta asarar makamashi a yanayin zafi mai yawa.
• Rashin Daidaito: Ƙafa ɗaya tana cire maganadisu kafin ɗayan kuma tana wargaza da'irar maganadisu.

Tsarin Tsaro Mai Maki 5

1. Zaɓin Kayan Aiki: Fara da Maki Mai Kyau

Ba duk NdFeB ne daidai ba. A ba da fifiko ga makin ƙarfin ƙarfi mai yawa (jerin H):

2. Kariyar Zafi: Karya Hanyar Zafi

Nazarin Shari'a: Kamfanin kera injin servo ya rage gazawar U-magnet da kashi 92% bayan ƙara spacers na mica 0.5mm tsakanin na'urori da maganadisu.

3. Tsarin Da'irar Magnetic: Tsarin Thermodynamics Mai Kyau

• Masu Kiyaye Flux: Farantin ƙarfe a fadin U-gap suna kiyaye hanyar kwarara yayin girgizar zafi.
• Magnetization na wani ɓangare: Yi amfani da maganadisu a kashi 70-80% na cikakken cikawa don barin "ɗakin kai" don yin amfani da zafi.
• Tsarin Rufe-Madauki: Saka U-magnets a cikin gidajen ƙarfe don rage fallasa iska da daidaita kwararar iska.

"Mai kula da na'urar da aka tsara da kyau yana rage haɗarin rushewar maganadisu da kashi 40% a zafin 150°C idan aka kwatanta da U-magnets."
- Ma'amaloli na IEEE akan Magnetics

4. Kariyar Aiki

• Lanƙwasawa: Kada a taɓa wuce iyakokin zafin jiki na musamman na maki (duba jadawalin da ke ƙasa).
• Kula da Zafi: Saka na'urori masu auna zafi kusa da U-legs don faɗakarwa a ainihin lokaci.
• A guji Keke: Saurin dumama/sanyi yana haifar da ƙananan fasa → yana hanzarta wargaza maganadisu.

Misalin Lanƙwasa na Derating (Matsayin N40SH):

Asarar Br │ 0% │ 8% │ 15% │ 30%*

5. Rufi Mai Kyau & Haɗawa

• Ƙarfafa Epoxy: Yana cike ƙananan fasa daga faɗaɗawar zafi.
• Rufin Zafi Mai Tsayi: Parylene HT (≥400°C) ya fi ƙarfin farantin NiCuNi na yau da kullun sama da 200°C.
• Zaɓin Manne: Yi amfani da epoxies masu cike da gilashi (zafin aiki> 180°C) don hana rabuwar maganadisu.

Tutocin Ja: Shin Magnet ɗin U ɗinku yana gazawa?

Gano fashewar farko a matakin farko:

1. Rashin daidaito a filin: >10% bambancin kwarara tsakanin U-ƙafafu (aunawa da binciken Hall).
2. Zafin Jiki: Magnet yana jin zafi fiye da kewaye - yana nuna asarar wutar lantarki.
3. Ragewar Aiki: Motoci suna rasa karfin juyi, na'urori masu auna firikwensin suna nuna karkacewa, masu rabawa suna rasa gurɓatattun abubuwa masu kama da ferrous.

Lokacin da Rigakafi Ya Kasa: Dabaru na Ceto

1. Sake maganadisu: Zai yiwu idan kayan ba su lalace ta hanyar tsari ba (yana buƙatar filin bugun jini sama da 3T).
2. Sake shafa: Zare fatar da ta lalace, a sake shafa mata fenti mai zafi sosai.
3. Tsarin Sauyawa: Canjawa da maki SH/UH + haɓakawa na zafi.

Tsarin Nasara

Babban HCI + Tsarin Buɗe Zafi + Tsarin Da'ira Mai Wayo = Magnets U Masu Juriya Da Zafi

Magnets na neodymium masu siffar U suna bunƙasa a cikin mawuyacin yanayi lokacin da kuka:

1. Zaɓi maki na SH/UH bisa ga addini don aikace-aikacen > 120°C
2. Ka ware daga hanyoyin zafi ta hanyar amfani da shingen iska/yumbu
3. Daidaita kwararar ruwa tare da masu riƙewa ko gidaje
4. Kula da zafin jiki a wurin rata