Otu esi egbochi mmebi nke magnetị U dị na gburugburu ebe okpomọkụ dị elu

Magnet neodymium dị ka Una-enye ntinye uche magnetik na-enweghị atụ - ruo mgbe okpomọkụ dara. N'ime ngwa dịka moto, sensọ, ma ọ bụ igwe ụlọ ọrụ mmepụta ihe na-arụ ọrụ karịa 80°C, mmebi a na-apụghị ịgbagha agbagha nwere ike imebi arụmọrụ. Mgbe U-magnet furu efu naanị 10% nke mmiri ya, oghere dị n'ime oghere ya na-ada ada, na-akpata ọdịda sistemụ. Lee otu esi agbachitere atụmatụ gị:

Ihe Mere Okpomọkụ Ji Egbu U Magnets Ngwa Ngwa

Magnet Neodymium na-emebi emebi mgbe ike okpomọkụ mebiri nhazi atọm ha. Ụdị U na-eche ihe egwu pụrụ iche ihu:

• Nrụgide nke Geometric: Ngbagọ na-emepụta ebe nrụgide dị n'ime nke na-adịghị ike maka mgbasawanye okpomọkụ.
• Ntinye Uche: Oke njupụta ubi dị na oghere ahụ na-eme ka mfu ike dịkwuo ngwa ngwa n'oge okpomọkụ dị elu.
• Ọdịda Asymmetric: Otu ụkwụ na-ewepụ magnet tupu nke ọzọ na-eme ka sekit magnet ghara ịdị n'otu.

Atụmatụ Nchebe Isi Ise

1. Nhọrọ Ihe: Malite na ọkwa kwesịrị ekwesị

Ọ bụghị NdFeB niile hà nhata. Mee ka akara ndị nwere oke mmanye (usoro H) bụrụ ihe kacha mkpa:

2. Nchekwa Okpomọkụ: Gbajie Ụzọ Okpomọkụ

Ọmụmụ Ihe Ikpe: Onye na-emepụta moto servo belatara mmebi nke U-magnet site na 92% mgbe etinyere oghere mica 0.5mm n'etiti eriri na magnet.

3. Nhazi Sekit Magnetik: Thermodynamics Kachasị Mma

• Ndị Na-echekwa Flux: Efere ígwè gafere oghere U na-edobe ụzọ flux n'oge mkpọtụ okpomọkụ.
• Magnetization nke akụkụ: Gbaa magnet na 70-80% nke afọ ojuju zuru oke iji hapụ "isi ụlọ" maka ntụgharị okpomọkụ.
• Nhazi Mgbachi Emechiri Emechi: Tinye U-magnets n'ime ihe mkpuchi ígwè iji belata ikpughe ikuku ma mee ka mmiri na-agagharị nke ọma.

"Onye na-echekwa ihe nke ọma na-ebelata ihe egwu nke imebi ihe site na 40% na okpomọkụ 150°C megide U-magnets gba ọtọ."
- Azụmahịa IEEE na Magnetik

4. Nchedo Ọrụ

• Mkpọchi nke na-ebelata okpomọkụ: Agala oke okpomọkụ akọwapụtara maka ọkwa (lee chaatị dị n'okpuru).
• Nlekota Okpomọkụ: Tinye ihe mmetụta dị nso na ụkwụ U maka ịdọ aka ná ntị ozugbo.
• Zere Ịgba ígwè: Okpomọkụ/oyi ngwa ngwa na-akpata obere mgbawa → mmebi ngwa ngwa.

Ihe atụ Derating Curve (N40SH Grade):

Mfu Br │ 0% │ 8% │ 15% │ 30%*

5. Mkpuchi na njikọta dị elu

• Mmeghachi omume Epoxy: Na-ejupụta obere mgbawa site na mgbasawanye okpomọkụ.
• Mkpuchi Okpomọkụ Dị Elu: Parylene HT (≥400°C) karịrị ihe mkpuchi NiCuNi ọkọlọtọ karịa 200°C.
• Nhọrọ nke ihe na-arapara: Jiri epoxies jupụtara na iko (okpomọkụ ọrụ>180°C) iji gbochie mwepụ nke magnet.

Ọkọlọtọ Uhie: Magnet U gị ọ na-ada ada?

Chọpụta demagnetization nke oge mbụ:

1. Asymmetry nke ubi: ihe karịrị 10% ọdịiche dị n'etiti ụkwụ U (iji nyocha Hall tụọ ya).
2. Okpomọkụ Na-agbanwe: Magnet na-adị ọkụ karịa gburugburu - na-egosi mfu ọkụ.
3. Mbelata Arụmọrụ: Moto na-efunahụ ike, sensọ na-egosi ntụgharị, ihe nkesa na-efunahụ ihe ndị na-emerụ ferrous.

Mgbe Mgbochi Na-ada ada: Usoro Nzọpụta

1. Ịmegharị ihe: O kwere omume ma ọ bụrụ na ihe ahụ emebighị n'ụzọ nhazi (chọrọ ihe karịrị 3T pulse field).
2. Mkpuchi ọzọ: Mkpuchi mebiri emebi, tinyeghachi mkpuchi okpomọkụ dị elu.
3. Usoro nnọchi: Gbanwee ya na ọkwa SH/UH + nkwalite okpomọkụ.

Usoro Mmeri

Ọkwa HCI dị elu + Nchekwa Okpomọkụ + Nhazi sekit mara mma = Igwe ndọta U na-eguzogide okpomọkụ

Magnet neodymium nke dị ka U na-eto nke ọma n'ebe siri ike mgbe ị:

1. Họrọ akara SH/UH n'ụzọ okpukperechi maka ngwa >120°C
2. Wepụ onwe gị pụọ na ebe okpomọkụ nwere ihe mgbochi ikuku/seramiiki
3. Mee ka mmiri na-agba ọsọ kwụsie ike site na iji ihe nchekwa ma ọ bụ ụlọ
4. Lelee okpomọkụ n'ebe oghere ahụ dị