Maitiro ekudzivirira Demagnetization yeU Akaumbwa Magnets mune Yakakwira-Kupisa Nzvimbo

U-shaped neodymium maginetiendesa isingaenzaniswi yemagineti kutarisa - kusvika kupisa kwarova. Mumaapplications akaita semotor, sensors, kana maindasitiri muchina anoshanda pamusoro pe80°C, isingadzoreki demagnetization inogona kukanganisa kushanda. Kana U-magineti ikangorasikirwa negumi muzana yekuyerera kwayo, iyo yakanamirwa munda mugomba rayo inodonha, zvichikonzera kutadza kwehurongwa. Heino nzira yekudzivirira magadzirirwo ako:

Sei Kupisa Kunouraya U Magnets nekukurumidza

Neodymium magineti anobvisa magineti kana simba rekupisa richikanganisa kurongeka kwavo kweatomu. U-maumbirwo anotarisana nenjodzi dzakasiyana:

• Geometric Stress: Kubhenda kunokonzeresa kushushikana kwemukati mapoinzi ari panjodzi yekuwedzera kupisa.
• Flux Concentration: Yakakwira munda density mune gap inomhanyisa kurasikirwa kwesimba panguva dzakakwirira.
• Asymmetric Failure: Rimwe gumbo rinobvisa magineti pamberi perimwe risingaenzanisi redunhu remagineti.

Iyo 5-Point Defense Strategy

1. Kusarudzwa kwezvinhu: Tanga neGiredhi Rakarurama

Haasi ese NdFeB akaenzana. Isa pamberi-yakanyanya-kumanikidza (H akateedzana) mamakisi:

2. Thermal Shielding: Kuputsa Nzira Inopisa

Nyaya Yokudzidza: Mugadziri we servo mota akadzikisa kutadza kweU-magineti ne92% mushure mekuwedzera 0.5mm mica spacers pakati pemakoiri nemagineti.

3. Magnetic Circuit Design: Outsmart Thermodynamics

• Flux Vanochengeta: Mahwendefa esimbi mhiri kweU-gap anochengetedza nzira yekuyerera panguva yekupisa kwekushisa.
• Partial Magnetization: Mhanya magineti pa70-80% yekuzara kwakazara kuti usiye "headroom" yekunyura kwemafuta.
• Yakavharwa-Loop Dhizaini: Embed U-magineti mudzimba dzesimbi kuderedza kuratidzwa kwemhepo uye kudzikamisa flux.

"Muchengeti akanyatsogadzirwa anocheka demagnetization ngozi ne40% pa150 ° C vs. isina magineti U-magineti."
-IEEE Transactions paMagnetics

4. Dziviriro Yekushanda

• Derating Curves: Usambofa wakapfuura giredhi-chaicho tembiricha miganho (ona chati pazasi).
• Thermal Monitoring: Embed sensors padyo neU-makumbo kune chaiyo-nguva yekuzivisa.
• Dzivisa Kuchovha: Kukurumidza kupisa / kutonhora kunokonzera microcracks → nekukurumidza demagnetization.

Derating Curve Muenzaniso (N40SH Giredhi):

Br Kurasikirwa │ 0% │ 8% │ 15% │ 30%*

5. Advanced Coatings & Bonding

• Epoxy Reinforcements: Inozadza microcracks kubva pakuwedzera kwekupisa.
• High-Temp Coatings: Parylene HT (≥400°C) inodarika mwero NiCuNi plating pamusoro pe200°C.
• Adhesive Sarudzo: Shandisa girazi-akazadzwa epoxies (sevhisi tembiricha> 180°C) kudzivirira magineti detachment.

Red Flags: Yako U Magnet Inotadza Here?

Tsvaga yekutanga-danho demagnetization:

1. Munda Asymmetry:> 10% flux musiyano pakati peU-makumbo (kuyera neHoro probe).
2. Temperature Creep: Magnet inonzwa kupisa kupfuura nharaunda - inoratidza kurasikirwa kwazvino.
3. Performance Drops: Mota dzinorasikirwa ne torque, ma sensors anoratidza kudonha, vanoparadzanisa vanopotsa ferrous tsvina.

Kana Kudzivirira Kukakundikana: Mazano Okuponesa

1. Re-magnetization: Zvinogoneka kana zvinhu zvisina kukuvadzwa (zvinoda> 3T pulse field).
2. Re-coating: Kubvisa corroded plating, shandisazve high-temp coating.
3. Replacement Protocol: Chinjana neSH/UH mamakisi + kukwidziridzwa kwemafuta.

The Winning Formula

Yakakwira Hci Giredhi + Thermal Buffering + Smart Circuit Dhizaini = Kupisa-Kudzivirira U Magnets

U-shaped neodymium magineti anokura munzvimbo dzakaoma kana iwe:

1. Sarudza mamakisi eSH/UH nechitendero kune> 120°C maapplication
2. Kuzviparadzanisa nevamwe kubva kune zvinopisa zvine mhepo/ceramic zvipingamupinyi
3. Gadzirisa flux nevachengeti kana dzimba
4. Monitor tembiricha pane gap