Ferrite Magnets Taw qhia
Feb 17, 2023
Ferrite hlau nplaum yog cov hlau nplaum tas mus li feem ntau ua los ntawm SrO lossis BaO thiab Fe2O3raws li raw khoom. Piv nrog rau lwm cov hlau nplaum tas mus li, ferrite hlau nplaum yog tawv thiab nkig nrog lub zog sib nqus tsawg. Txawm li cas los xij, nws tsis yooj yim rau demagnetize thiab tsis corrode, cov txheej txheem ntau lawm yog yooj yim thiab tus nqi qis. Yog li ntawd, cov zis ntawm ferrite hlau nplaum yog qhov siab tshaj plaws nyob rau hauv tag nrho cov hlau nplaum kev lag luam thiab yog dav siv nyob rau hauv industrial ntau lawm.
Ferrite hlau nplaum yog cov khoom siv hlau nplaum ruaj khov, uas yog tsim los ntawm barium thiab strontium ferrite. Cov khoom siv hlau nplaum no tsis tsuas yog muaj zog tiv thaiv demagnetization kev ua tau zoo, tab sis kuj muaj qhov zoo ntawm tus nqi qis. Ferrite hlau nplaum yog nruj thiab nkig thiab yuav tsum tau tshwj xeeb machining txheej txheem. Vim hais tias cov hlau nplaum rov qab yog taw qhia raws li kev tsim khoom, nws yuav tsum tau magnetized nyob rau hauv cov kev taw qhia coj, thaum tib-poj niam txiv neej hlau nplaum yuav magnetized nyob rau hauv txhua txoj kev, vim hais tias nws tsis yog oriented, txawm hais tias ib tug me ntsis muaj zog magnetic induction yuav pom nyob rau sab. qhov twg lub siab feem ntau yog qhov tsawg tshaj plaws. Cov khoom siv hluav taws xob sib nqus ntawm 1.1MGOe mus rau 4.0MGOe. Vim nws cov nqi qis, cov hlau nplaum ferrite muaj ntau yam kev siv, los ntawm cov motors, hais lus mus rau cov khoom ua si thiab khoom siv tes ua, yog li tam sim no lawv yog cov khoom siv hlau nplaum zoo tshaj plaws.
Ferrite hlau nplaum tau muab faib ua anisotropy (anisotropy) thiab isotropy (isotropy). Lub isotropic sintered ferrite cov khoom siv hlau nplaum ruaj khov muaj cov khoom sib nqus tsis muaj zog, tab sis nws tuaj yeem sib nqus hauv cov lus qhia sib txawv ntawm cov hlau nplaum; anisotropic sintered ferrite cov khoom siv hlau nplaum ruaj khov muaj cov khoom sib nqus muaj zog, tab sis nws tsuas tuaj yeem sib nqus raws li cov kev taw qhia ntawm cov hlau nplaum. Predetermined magnetization kev taw qhia magnetization.
Hauv kev tsim cov hlau nplaum ferrite tiag tiag, qee zaum cov khoom siv raw nrog cov tshuaj muaj pes tsawg leeg zoo yuav tsis tuaj yeem tau txais cov hlau nplaum ferrite nrog kev ua tau zoo thiab microstructure. Qhov laj thawj yog qhov cuam tshuam ntawm lub cev. Cov npe ntawm lub cev ntawm cov hlau oxide suav nrog qhov nruab nrab qhov loj me APS, thaj chaw tshwj xeeb SSA thiab qhov ntom ntom BD. Txij li thaum hlau oxide suav txog li 70 feem pua hauv cov qauv ntawm manganese-zinc ferrite hlau nplaum, nws tus nqi APS muaj kev cuam tshuam zoo rau APS tus nqi ntawm ferrite hlau nplaum hmoov. Feem ntau hais lus, APS tus nqi ntawm cov hlau oxide yog me me, thiab APS tus nqi ntawm ferrite hlau nplaum hmoov kuj yog me me, uas yog qhov zoo rau kev ua kom cov tshuaj tiv thaiv kab mob. Txawm li cas los xij, txiav txim siab tias cov hmoov zoo heev tsis zoo rau kev nias tom ntej thiab yooj yim crystallization thaum lub sij hawm sintering, tus nqi APS yuav tsum tsis txhob tsawg dhau. Pom tseeb, thaum APS tus nqi ntawm cov hlau oxide loj dhau lawm, tsuas yog cov tshuaj tiv thaiv diffusion ntawm spinel theem tuaj yeem nqa tawm thaum lub sijhawm ua ntej calcination vim qhov loj me me, thiab cov txheej txheem kev loj hlob ntxiv tsis tuaj yeem nqa tawm. Qhov no yuav inevitably ua rau kom muaj zog ua kom muaj zog uas yuav tsum tau ua rau sintering, uas tsis tsim nyog rau cov tshuaj tiv thaiv hauv lub xeev.
Lub luag haujlwm ntawm ferrite yog dab tsi?
1. Sib nqus shielding, los yog absorbing electromagnetic tsis.
2. Tsis yog ferrite qhov siab tshaj qhov kub tsis kam mus txog 450degree? General ferrite tuaj yeem ncav cuag 200 degree.
3. Nws muaj cov nyhuv adsorption, tab sis lub zog adsorption tsawg heev, thiab ib pawg ntawm lawv yog cov conductive, thiab lawv siv ntau dua hauv cov motors.
Dab tsi yog qhov ceev ntawm ferrite?
Sintered ferrite: Qhov ceev yog li 4.9 g / cm33.
Txhaj tshuaj molded ferrite nrog qhov ceev ntawm 3.8 g / cm33.
Qhov twg yog cov hlau nplaum ferrite siv tshaj plaws?
Ferrite hlau nplaum yog undoubtedly siv nyob rau hauv ntau yam motors. Starter motors rau maus taus thiab tsheb, thiab motors rau qhib lub hnub ci. Cov ntaub thaiv tsis siv neeg, cov khoom ua si lub cev muaj zog, thiab lwm yam.
Nws raug nqi npaum li cas los qhib ferrite pwm?
Peb lub tuam txhab tam sim no muaj ntau qhov ntau thiab tsawg ntawm pwm xws li puag ncig, nplhaib, square thiab pobzeb-zoo li tus ferrite hlau nplaum, uas tuaj yeem pab cov neeg siv khoom txuag nyiaj ntau ntawm cov pwm qhib.
