Siab coercivity ntawm ferrite Hcb, me me rov qab permeability mr, me me ntom (4.5 ~ 5.2g / cm3), oxidation kuj thiab corrosion kuj, demagnetization nkhaus ua hauj lwm ib feem yog muab faib ua txoj kab ncaj nraim, zoo dynamic yam ntxwv, tsis muaj magnetic stability kho, siab siv cov khoom siv. tus nqi, pheej yig tus nqi. Qhov tsis zoo yog tias qhov tseem ceeb ntawm Br tsis tshua muaj, qhov sib nqus induction kub coefficient loj, sintered ferrite yog tawv thiab nkig, lub tshuab ua haujlwm nyuaj, thiab hluav taws xob tiv taus siab heev (1012 ~ 1014 Mw.cm), tsis tuaj yeem ua tau. siv hlau txiav los yog hluav taws xob machining, tsuas yog yuav tsum tau siv toothless saw los yog pob zeb diamond grinder sib tsoo.
Ferrite muaj ob series ntawm isotropy thiab anisotropy, raws li cov txheej txheem molding sib txawv, anisotropy ferrite thiab qhuav siab thiab ntub dej. Raws li kev faib ua feem tseem ceeb, feem ntau siv barium ferrite thiab strontium ferrite ob yam.
Cov hmoov ferrite tsis tov nrog roj hmab lossis yas, tuaj yeem ua los ntawm ntau yam yas ferrite, thiaj li paub qhov txawv ntawm sintered ferrites, hom ferrite no hu ua bonded ferrite.
ntubmoldingthiab qhuavmolding
Sintered Ferrite yog tsim los ntawm presintering (txog 1300 degree) cov ntaub ntawv raw rau hauv cov hlau nplaum ruaj khov, feem ntau yog los ntawm kev faib ua feem rau lawv. Cov khoom ntxhib prefired muaj kev ua haujlwm tsis zoo thiab tsis ruaj khov. Nws yuav tsum tau muab lub pob milled rau hauv cov hmoov hauv qab ntawm ib qho loj me me, molded nyob rau hauv lub zog txaus sab nraud magnetic teb, thiab thaum kawg sintered nyob rau hauv ib tug luv luv lub sij hawm (1200 degree ~ 1280 degree).
Nyob rau hauv ferrite magnetic teb txoj kev tsim, ntub nias txoj kev yog muab cov slurry tom qab ob lub pob sib tsoo ncaj qha rau hauv pwm. Thaum lub sij hawm lub siab tsim, ib tug muaj zog magnetic teb nyob rau hauv ib tug tej yam kev taw qhia (raws li lub magnetic teb kev taw qhia yuav tsum tau rau cov khoom siv) yog siv nyob rau tib lub sij hawm, thiaj li hais tias qhov yooj yim magnetization axis ntawm ib tug sau nplej yog raws li nyob rau hauv sab nraud magnetic teb kev taw qhia. Lub siab hom tib lub sij hawm siv lub twj tso kua mis kom tshem tawm cov dej, thiab lub siab thiab qis punch ntawm lub gasket los tiv thaiv kev tshem tawm ntawm Tshuag, molding thiab ces qhuav.
Nthuav nias molding vim cov dej slurry, cov nplej tuaj yeem tig dawb hauv cov txheej txheem molding, yooj yim rau grain orientation, yog li cov khoom sib nqus zoo, Br loj Hcb siab. Tab sis thaum tsim rau gasket, lim lim, ntau lawm efficiency yog tsawg. Cov xovxwm qhuav yog ntxiv cov hmoov qhuav uas tsis muaj dej noo tom qab lub pob thib ob sib tsoo rau hauv qhov tsim nyog ntawm Binder (Binder), muab tso rau hauv cov hlau nplaum sib nqus kom nias sib sau. Kev taw qhia ntawm qhov chaw sib nqus ntawm cov xovxwm qhuav yog me ntsis tsis zoo, thiab cov cuab yeej sib nqus yog qhov phem dua li cov xovxwm ntub dej.
