Magnetic field orientation forming yog txoj kev siv ntau tshaj plaws kom tau txais cov hlau nplaum anisotropic los ntawm kev siv cov kev sib cuam tshuam ntawm cov hmoov hlau nplaum thiab cov hlau nplaum sab nraud los npaj cov kev taw qhia yooj yim magnetization ntawm cov hmoov hmoov kom lawv ua raws li qhov kawg kev taw qhia ntawm cov hlau nplaum. Cov txheej txheem kev npaj hmoov rhuav tshem Nd-Fe-B alloy rau hauv ib qho khoom siv lead ua, uas nyob rau hauv lem yog uniaxial anisotropic, nrog rau txhua qhov muaj tsuas yog ib tug sib nqus axis -- c axis ntawm lub ntsiab theem ntawm tes. Cov hmoov yog xoob ntim rau hauv pwm, thiab qhov ntim ntim yog li 25 feem pua -30 feem pua ntawm qhov ceev tiag. Nyob rau hauv qhov kev txiav txim ntawm sab nraud magnetic teb saum toj no 0.8A / m, cov hmoov particles hloov los ntawm ntau yam domains mus rau ib tug domains, thiab cov kev taw qhia ntawm ib qho yooj yim magnetization yog hloov mus rau cov kev taw qhia ntawm sab nraud magnetic teb los ntawm kev sib hloov los yog txav. .
Hauv kev tsim khoom lag luam, cov txheej txheem nias txoj kev sib sau tau muab faib ua ib lub sij hawm tsim thiab ob lub sij hawm sib sau.
Ib qho kev sib sau tuaj yeem siv unidirectional xovxwm (siab feem ntau yog 50-100MPa, qhov ceev ntawm lub billet yog 55 feem pua -60 feem pua ntawm qhov ceev tiag tiag) lossis txias isostatic xovxwm (siab feem ntau yog 200MPa, qhov ceev ntawm lub billet yog 60 feem pua ntawm qhov ceev tiag).
Ob txoj kev tuaj yeem siv unidirectional xovxwm (siab feem ntau yog 20-30MPa, compact ntom yog 45 feem pua ntawm qhov ceev tiag) ntxiv rau txias isostatic xovxwm (siab feem ntau yog 200MPa, compact ntom yog 60 feem pua ntawm qhov ceev tiag).
Nyob rau hauv tus txheej txheem ntawm orientation txoj kev, cov hmoov hlau alloy yeej tuav lub xeev ntawm C-axis orientation. Tom qab ua tiav ntawm kev nias, qhov khoob yog demagnetized (kom tshem tawm qhov kev puas tsuaj ntawm cov hlau nplaum dipole kev sib cuam tshuam ntawm cov hmoov hlau nplaum ntawm qhov taw qhia ntawm cov khoom nyob ib sab), thiab tom qab ntawd cov pwm raug tshem tawm. Ib qho dawb paug nrog zoo orientation nyob rau hauv cov kev taw qhia ntawm yooj yim magnetization yuav tau.
Lub siab txog li 100 MPa yuav yuam kom cov hmoov sib nqus ua raws li qhov sib npaug ntawm cov khoom siv dag zog thiab lub zog sib nqus, uas yuav ua rau kev txav los yog kev sib hloov ntawm cov hlau nplaum hmoov, uas yuav ua rau nws cov c axis deviate los ntawm cov kev taw qhia ntawm sab nraud. magnetic teb thiab txo cov orientation ntawm qhov khoob. Yog li ntawd, txoj kev tsim ntawm magnetic teb yog kom sib npaug kev sib raug zoo ntawm magnetic teb siv thiab tsim lub siab tsim nyog nyob rau hauv lub premise ntawm ncav cuag dawb paug ceev, thiaj li mus kom tau raws li high orientation li sai tau.
