Magnetization yog dab tsi? Yuav ua li cas kom paub txog 2- ncej thiab multipole magnetizing feem?

"Magnetization" yog dab tsi?

Thaum koj xav txog cov hlau nplaum, cov duab uas los rau hauv siab yog tias lawv "lo rau hlau", tab sis qhov tseeb, lawv yuav tsis lo rau hlau txij thaum pib. Thaum cov khoom sib nqus ua tiav, cov hlau nplaum yog nonmagnetic, thiab cov txheej txheem ntawm kev ua cov hlau nplaum tsis sib nqus no hu ua "magnetization" lossis "magnetization".

Cov txheej txheem magnetizing yog dab tsi?

1. Hu rau magnetization txoj kev:

Nyob rau hauv txoj kev sib cuag magnetization, ib tug magnetized muaj zog hlau nplaum (feem ntau yog ib tug mus tas li hlau nplaum) yog coj mus rau hauv kev sib cuag ncaj qha nrog cov hlau nplaum yuav tsum magnetized. Los ntawm kev sib cuag, cov khoom sib nqus tau rov ua dua nyob rau hauv qhov chaw sib nqus muaj zog thiab tau txais cov hlau nplaum.

2. Vibration magnetization txoj kev:

Nyob rau hauv txoj kev vibration magnetization, cov hlau nplaum yog muab tso rau hauv ib qho cuab yeej tshwj xeeb, uas vibrates ntawm ib qho kev sib tw thiab amplitude. Qhov kev vibration no yuav ua rau cov khoom sib nqus ntawm cov hlau nplaum npaj rau hauv kev co, yog li paub txog magnetization.

3. Electromagnetic magnetization txoj kev:

Nyob rau hauv txoj kev electromagnetic magnetization, cov hlau nplaum yog muab tso rau hauv ib lub solenoid kauj. Lub solenoid yog lub tog raj kheej hollow, thiab cov hlau nplaum uas muaj qhov sib txawv thiab cov duab tuaj yeem muab tso rau hauv nws. Lub kauj yog energized los tsim kom muaj zog magnetic teb, uas yuav magnetize cov khoom sib nqus kom tswj cov hlau nplaum. Electromagnetic magnetization txoj kev siv lub zog electromagnetic coil los ua kom muaj zog sib nqus ua haujlwm siab. Los ntawm kev kho cov qauv tam sim no thiab coil, kev sib nqus ntau dua thiab cov nyhuv magnetization ntau dua tuaj yeem ua tiav. Txoj kev no yog siv dav hauv kev tsim khoom.

Dab tsi yog cov cuab yeej xav tau rau kev lag luam magnetization?

Feem ntau yuav tsum tau npaj: ① magnetizing fais fab mov (magnetizer), ② magnetizing fixture (coil), ③ txias ntaus ntawv (dej tshuab dej khov), ④ Gauss meter ( ntsuas ntsuas).

Cov ntaub ntawv dab tsi tuaj yeem ua tau magnetized?

Cov hlau nplaum uas tuaj yeem ua tau hlau nplaum yog hu ua "cov hlau nplaum tas mus li" lossis "cov hlau nplaum tas mus li" luv luv, thiab qee cov neeg hu lawv "cov hlau nplaum nyuaj".

Cov hlau nplaum tas mus li: Cov hlau nplaum ruaj khov tuaj yeem muab faib ua ob pawg: 1. Cov hlau nplaum hlau nplaum: neodymium hlau nplaum, Sm-Co hlau nplaum thiab Al-Ni-Co hlau nplaum; 2. Ferrite cov khoom siv hlau nplaum ruaj khov.

Mos magnetic: Cov hlau nplaum uas tsis tuaj yeem sib nqus yog hu ua "magnetic magnetic" cov ntaub ntawv.

Tom qab cov khoom siv hlau nplaum yog hlau nplaum, thaum cov hlau nplaum hlau nplaum ploj, cov hlau nplaum seem me me los yog ploj nrog nws. Cov feem ntau yog: mos ferrite, amorphous, hlau ntshiab (mos hlau), silicon steel, hlau-nickel alloy thiab lwm yam.

Lub hauv paus ntsiab lus ntawm magnetization yog dab tsi?

Lub hauv paus ntsiab lus ntawm magnetization yog raws li txoj cai ntawm electromagnetic induction thiab ampere txoj cai. Cov mem tes tam sim no ua rau muaj zog sib nqus nyob rau hauv lub kauj, uas mus tas li magnetizes cov khoom siv hlau nplaum nyuaj tso rau hauv lub kauj. Lub ncov tus nqi ntawm cov mem tes tam sim no yog siab heev thaum lub thawv magnetized electromechanical ua haujlwm, uas yuav tsum tau lub capacitor tiv thaiv impulse tam sim no. Cov hlau nplaum muaj cov qauv yooj yim thiab ua tau yog ib qho hluav taws xob nrog lub zog sib nqus.

Vim li cas magnetization directional?

Kev taw qhia magnetization yog thawj kauj ruam rau cov hlau nplaum neodymium, samarium cobalt lub cev ruaj khov thiab lwm yam ntaub ntawv kom tau txais cov hlau nplaum. Nws sawv cev rau txoj hauj lwm ntawm N ncej (North Ncej) thiab S ncej (South Ncej) nyob rau hauv ib tug hlau nplaum los yog hlau nplaum tivthaiv. Cov hlau nplaum ntawm cov khoom sib nqus ruaj khov feem ntau yog los ntawm nws cov qauv siv hlau nplaum yooj yim, uas peb hu ua "magnetic domain". Lub interface ntawm cov npe hu ua domain wall. Feem ntau, cov khoom macroscopic ib txwm muaj ntau qhov sib nqus. Nyob rau hauv txoj kev no, cov lus qhia ntawm lub sij hawm sib nqus ntawm cov hlau nplaum sib txawv, thiab cov txiaj ntsig tshem tawm ib leeg. Cov vector sum yog xoom, thiab lub sijhawm sib nqus ntawm tag nrho cov khoom yog xoom, yog li nws tsis tuaj yeem nyiam lwm cov khoom sib nqus. Uas yog hais, cov khoom sib nqus tsis qhia cov hlau nplaum rau sab nraud raws li qhov xwm txheej ib txwm muaj. Tsuas yog thaum cov khoom sib nqus hlau nplaum tuaj yeem pom cov hlau nplaum rau sab nraud. .

Yuav ua li cas magnetized 2 ncej thiab multipoles paub raws li?

1. Ob tug ncej magnetizing: hollow coil (raws li qhia hauv daim duab hauv qab no) kuj hu ua solenoid. Nyob rau hauv engineering, tus naj npawb ntawm cov coils feem ntau yog 5-30 tig, cov hlau nplaum yog feem ntau muaj cov hlau ntshiab, cov kauj tam sim no feem ntau yog kaum mus rau pua pua amperes, thiab qhov ntev ntawm cov hlau nplaum feem ntau yog ob peb centimeters los yog kaum centimeters. Cov kev txwv tshwj xeeb yuav tsum raug xaiv kom tsim nyog raws li cov khoom siv hlau nplaum, tag nrho qhov loj ntawm cov khoom siv hlau nplaum thiab cov xov tooj ntawm cov hlau nplaum kom ua tiav cov txiaj ntsig zoo.

2. Multipole magnetization:

Siv cov coils tshwj xeeb: ① ze rau ntawm txoj kab uas hla ntawm cov hlau nplaum ruaj khov (sab nraud periphery multipole), ② ze rau ntawm txoj kab uas hla ntawm cov hlau nplaum ruaj khov (sab hauv txoj kab uas hla multipole), ③ ze rau lub ntsej muag kawg ntawm cov hlau nplaum ruaj khov (planar multipole) , ④ Helbeck array magnetization (siv ob tug ncej los magnetize thiab ces splicing thiab assembling cov hlau nplaum tas mus li los tsim ib tug tshwj xeeb ua ke ntawm concentrated magnetic teb).

Cov xwm txheej magnetizing yog dab tsi?

Cov txheej txheem magnetizing ntawm cov khoom siv hlau nplaum tas mus li muaj xws li magnetizing voltage, magnetizing tam sim no, magnetizing lub sij hawm thiab lwm yam ntsuas. Kev teeb tsa raug ntawm cov ntsuas no muaj qhov cuam tshuam tseem ceeb rau kev ua haujlwm thiab lub neej ntawm cov hlau nplaum hlau los yog cov hlau nplaum ruaj khov.

1. Kev sib nqus tam sim no tsis tu ncua: Txoj kev no yog tsim rau cov hlau nplaum coercivity tsawg, xws li cov hlau nplaum ferrite. Lub hauv paus ntsiab lus ntawm realization yog tso tawm los ntawm qhov tsawg-voltage thiab loj-capacity capacitor.

2. Pulse magnetizing: Txoj kev no yog tsim rau cov hlau nplaum uas muaj siab coercivity, xws li neodymium hlau nplaum. Lub hauv paus ntsiab lus ntawm kev paub yog tias lub kauj tsim lub sij hawm luv luv super-muaj zog magnetic teb los ntawm high-voltage thiab me-capacity capacitor paug.

Yuav ua li cas txhais tau tias magnetization yog saturated los tsis?

Yuav ua li cas txiav txim seb lub workpiece yog saturated tom qab magnetizing? Feem ntau, nws yog cov ntaub ntawv sib nqus ntawm cov lus ntsuas. Yog tias muaj qhov sib txawv loj nrog cov ntaub ntawv theoretical, nws tau txiav txim siab tias tsis muaj qhov saturation ntawm magnetization. Hauv kev ua haujlwm tiag tiag, qhov hluav taws xob tau hloov pauv mus rau lub zog xav tau ntawm cov hlau nplaum hom los sim magnetizing. Tom qab qhov kev sib nqus ua tiav, qhov sib nqus ntawm qhov sib nqus, uas yog, cov hlau nplaum saum npoo ntawm cov hlau nplaum yog kuaj pom los ntawm cov khoom siv ntsuas magnetic. Los yog ntsuas qhov sib nqus flux ntawm cov hlau nplaum, sau cov ntaub ntawv magnetizing, tom qab ntawd ua kom lub zog hluav taws xob thiab magnetize zaum ob. Tom qab magnetizing, sim cov hlau nplaum kom pom tias lub zog hlau nplaum tau nce. Yog hais tias lub zog magnetic teb tsis tau nce tom qab nce qhov voltage, nws txhais tau hais tias cov hlau nplaum tau magnetized thiab saturated.

Qee lub ntiaj teb tsis tshua muaj hlau nplaum yuav tsum muaj cov hlau nplaum loj heev hauv thaj tsam ntawm 20 txog 50 KOe. Cov chaw sib nqus no nyuaj rau tsim, thiab xav tau lub zog hluav taws xob siab thiab cov khoom siv hlau nplaum tsim tau zoo. Isotropic bonded neodymium cov ntaub ntawv xav tau ib qho chaw sib nqus hauv qhov siab ntawm 60 KOe kom saturated tag. Txawm li cas los xij, thaj chaw hauv thaj tsam ntawm 30 KOe tuaj yeem ncav cuag 98% saturation. Ferrite hlau nplaum xav tau ib qho chaw sib nqus hauv qhov kev txiav txim ntawm 10 KOe, thaum Al-Ni-Co alloys xav tau ib qho chaw sib nqus hauv thaj tsam ntawm 3 KOe kom saturated. Vim tias Al-Ni-Co tuaj yeem yooj yim demagnetized unintentionally, nws yog qhov zoo tshaj plaws rau magnetize cov khoom no ua ntej lossis txawm tias tom qab cov hlau nplaum thaum kawg sib sau ua ke rau hauv cov khoom siv.