Kev piav qhia txog cov hlau nplaum muaj zog

 Dab tsi ua rau lub Magnet muaj zog?

Thaum cov kws tshaj lij hais txog lub hlau nplaum ua "muaj zog," lawv tsis tshua muaj kev sib txuas rau ib tus lej cais los ntawm daim ntawv qhia tshwj xeeb. Lub zog sib nqus tiag tiag los ntawm kev sib cuam tshuam ntawm ntau yam khoom hauv cov xwm txheej tiag tiag - thiab nws yog qhov sib xyaw ua ke no uas cais kev ua tau zoo theoretical los ntawm kev ua tau zoo uas koj tuaj yeem tso siab rau hauv kev xyaum.

Muaj ntau yam sib txuas ua ke txiav txim siab qhov kev ua tau zoo ntawm lub zog sib nqus:

Ua ntej tshaj plaws yog kev rov ua dua tshiab (Br), uas ntsuas qhov sib nqus flux uas lub hlau nplaum khaws cia thaum nws raug tshem tawm ntawm nws lub teb magnetizing. Xav txog nws zoo li lub hauv paus "sticking base" ntawm lub hlau nplaum - lub peev xwm tseem ceeb uas nws muaj los tuav cov khoom siv ferromagnetic ntev tom qab thawj zaug magnetization txheej txheem xaus. Yog tsis muaj kev rov ua dua tshiab txaus, txawm tias lub hlau nplaum tsim los rau lub zog yuav nyuaj rau tuav hauv kev siv txhua hnub.

Thaum koj muab tag nrho cov hlau nplaum tas mus li uas muaj niaj hnub no sib sau ua ke, cov hlau nplaum neodymium yeej ib txwm ua ntej cov kev xaiv ib txwm muaj xws li ferrite thiab alnico hla txhua qhov kev ntsuas no.

Kev Tshawb Fawb Tom Qab Neodymium Qhov Zoo Tshaj Plaws?

Txij li thaum pib muaj nyob rau xyoo 1980, cov hlau nplaum neodymium tau hloov pauv ntau yam kev tsim qauv uas qhov chaw nqaim tab sis lub zog sib nqus tsis tuaj yeem raug cuam tshuam. Lawv cov peev xwm tshwj xeeb pib tob hauv lawv cov qauv atomic:

Qhov kev teeb tsa siv lead ua tetragonal tshwj xeeb hauv NdFeB tsim cov khoom uas cov kws tshawb fawb hu ua magnetocrystalline anisotropy. Hauv kev siv tiag tiag, qhov no txhais tau tias cov qauv sib nqus sab hauv tau teeb tsa raws li qhov kev taw qhia uas nyiam, tsim kom muaj zog ntawm thaj chaw zoo kawg nkaus.

Cov hlau nplaum no coj ob qho tib si remanence tseem ceeb thiab coercivity tseem ceeb rau lub rooj, ua rau lawv tuaj yeem tswj tau cov teb magnetic muaj zog thaum sawv ntsug rau demagnetization pressures. Qhov kev ua tau zoo sib npaug no ua pov thawj tshwj xeeb tshaj yog muaj txiaj ntsig zoo hauv cov ntawv thov dynamic qhov twg cov xwm txheej tsis tshua nyob zoo meej.

Cov hlau nplaum neodymium zoo dua li cov hlau nplaum samarium-cobalt, alnico, thiab ferrite. Qhov kev sib zog ua kom zoo kawg no ua rau cov pab pawg engineering tsim cov kev daws teeb meem me me dua, txuag hluav taws xob.

Vim li cas cov duab plaub fab ua haujlwm zoo heev？

Cov hlau nplaum neodymium plaub fabtau tshwm sim los ua cov nyiam thoob plaws ntau qhov chaw sib txawv uas qhov kev ua haujlwm zoo yuav tsum muaj nyob ua ke nrog cov kev xav tau kev ua tau zoo. Lawv cov qauv zoo li lub thaiv muab ntau yam txiaj ntsig pom tseeb:

Cov chaw tiaj tiaj ua rau muaj kev sib cuag nrog cov khoom siv ferromagnetic ntau tshaj plaws, ua rau muaj kev sib txuas zoo dua li cov duab nkhaus lossis cov duab tsis xwm yeem feem ntau ua tau.

Cov kab huv si thiab cov ces kaum ntse ua rau kev sib koom ua ke rau hauv cov khoom siv hauv kev lag luam thiab cov khoom siv rau cov neeg siv khoom yooj yim dua, ua rau kev teeb tsa thiab kev sib dhos yooj yim dua.

Lub khw muaj cov hlau nplaum neodymium plaub fab hauv ntau qib kev ua tau zoo (feem ntau N35 txog N52) nrog rau ntau yam kev xaiv txheej (xws li nickel, zinc, thiab epoxy) los daws cov teeb meem ua haujlwm sib txawv.

Cov Txheej Txheem Tsim Khoom Piav Qhia

Cov neeg tsim khoom feem ntau tsim cov hlau nplaum neodymium los ntawm ib qho ntawm ob txoj kev tsim:

Txoj kev sintering pib los ntawm kev yaj cov khoom nyoos, hloov lawv mus ua hmoov zoo, nias rau hauv qab kev taw qhia magnetic, tom qab ntawd sintering thiab precision machining. Txoj kev no ua tiav qhov kev ua tau zoo tshaj plaws magnetic tab sis xav tau kev tswj hwm nruj rau cov noob me me thoob plaws hauv kev tsim.

Kev tsim cov hlau nplaum sib txuas ua ke cov khoom sib nqus nrog cov yas khi ua ntej pwm. Cov hlau nplaum tso zis, txawm hais tias tsis yooj yim tawg thiab hloov pauv tau zoo dua, feem ntau qhia tau tias cov zis sib nqus qis dua piv rau cov qauv sintered.

Rau cov hlau nplaum neodymium uas muaj cov duab plaub fab, cov neeg tsim khoom lag luam feem ntau siv cov txheej txheem sintering vim tias cov txheej txheem no khaws cov qhov ntev kom raug thaum lav qhov txiaj ntsig zoo sib xws - ob qho tseem ceeb rau cov ntawv thov kev tshaj lij.

Cov Yam Tseem Ceeb Tseem Ceeb

Txawm hais tias cov ntawv qhia tshwj xeeb muab cov lus qhia pab tau, cov chaw teeb tsa tiag tiag qhia txog cov yam ntxwv ntxiv:

Cov hlau nplaum neodymium ib txwm pib muaj kev puas tsuaj mus tas li thaum qhov kub tshaj 80 ° C. Rau qhov chaw sov dua, cov chaw tsim khoom tsim cov qib tshwj xeeb uas suav nrog dysprosium lossis terbium additives.

Cov hlau nplaum NdFeB liab qab tseem yooj yim rau xeb thiab xeb. Cov chaw tiv thaiv hloov pauv ntawm cov khoom ntxiv xaiv tau mus rau cov yam ntxwv yuav tsum tau ua, tshwj xeeb tshaj yog nyob rau hauv qhov chaw ntub dej lossis muaj tshuaj lom neeg.

Txawm hais tias lawv muaj zog sib nqus los xij, cov hlau nplaum neodymium pom tseeb tias nws tawg yooj yim. Kev tsis ceev faj thaum tuav lossis cuam tshuam thaum teeb tsa tuaj yeem ua rau muaj cov kab nrib pleb lossis tawg, uas yuav tsum tau ua tib zoo teeb tsa.

Cov Cheeb Tsam Siv Tau Pom Zoo

Qhov kev sib yuav muaj zog ntawm cov zis hlau nplaum muaj zog thiab qhov chaw tsim khoom siv tau zoo ua rau cov hlau nplaum neodymium zoo meej rau ntau yam kev siv:

Cov tuam txhab hluav taws xob muab lawv tso rau hauv cov neeg hais lus, cov khoom siv khaws cia, thiab cov sensors qhov twg cov vaj tse sab hauv tsis muaj txaus.

Cov tshuab ua haujlwm tsis siv neeg hauv Hoobkas tsim lawv ua cov khoom siv sib cais, cov khoom siv ua haujlwm raug, thiab cov khoom siv taug qab qhov chaw.

Cov kws ua haujlwm tsheb xaiv lawv rau cov txheej txheem hluav taws xob, EV powertrains, thiab kev ua haujlwm sensing.

Cov phiaj xwm fais fab cua siv lawv hauv cov generator stacks qhov twg kev ntseeg tau thiab kev sib sau ua ke ntawm lub zog suav nrog.

Cov neeg tsim khoom siv kho mob muab lawv tso rau hauv cov tshuab thaij duab thiab cov cuab yeej ua haujlwm tshwj xeeb.

Cov Tswv Yim Xaiv Ntse

Kev xaiv lub hlau nplaum zoo tagnrho suav nrog kev sib tw ntau yam:

Txawm hais tias cov qib siab tshaj plaws muab lub zog ntau dua, lawv feem ntau qhia tau tias muaj kev puas tsuaj ntau dua. Qee zaum xaiv cov hlau nplaum loj dua me ntsis, qib qis dua yuav ua rau muaj lub neej ntev dua thiab kev lag luam zoo dua.

Qhov chaw ua haujlwm yuav tsum txiav txim siab seb puas muaj cov txheej txheem twg xaiv tau. Cov neeg tsim khoom yuav tsum soj ntsuam seb puas muaj peev xwm kov tau cov dej noo, cov tshuaj xeb, thiab kev puas tsuaj ntawm lub cev thaum xaiv cov khoom siv tiv thaiv.

Koom tes nrog cov neeg tsim khoom uas xa cov qauv tseeb, rov qab ua qauv prototyping, thiab sib qhia kev paub txog kev siv tshuab los txhim kho cov qauv tsim rau kev ua tau zoo thiab kev ruaj ntseg.

Cov Kev Cai Tseem Ceeb Txog Kev Nyab Xeeb

Lub zog tseem ceeb ntawm cov hlau nplaum no coj cov kev xav tau tshwj xeeb:

Lawv qhov kev nyiam heev tuaj yeem ua rau muaj qhov txhab loj heev lossis tsim cov khoom tawg yog tias cov hlau nplaum sib tsoo thaum lub sijhawm ua haujlwm.

Khaws cov hlau nplaum muaj zog kom deb ntawm cov khoom siv hluav taws xob, cov khoom siv kho mob uas cog rau hauv, thiab qhov chaw cia hlau nplaum kom tiv thaiv kev puas tsuaj lossis kev cuam tshuam.

Siv cov khoom siv kev nyab xeeb kom zoo - tshwj xeeb yog cov tsom iav uas tiv taus kev cuam tshuam thiab cov hnab looj tes ua haujlwm - thaum teeb tsa lossis tswj cov hlau nplaum no.

Qhov Kev Ntsuas Tseeb ntawm Lub Zog Sib Nqus

Ib lub "hlau nplaum muaj zog" tiag tiag muab ntau tshaj li cov lej hauv chaw kuaj mob - nws muab kev ua haujlwm zoo hauv qab qhov xwm txheej ua haujlwm tiag tiag. Cov hlau nplaum neodymium plaub fab tau txais lawv qhov xwm txheej ua cov khoom siv nyiam rau kev siv uas xav tau lub zog sib nqus loj, qhov sib piv me me, thiab kev teeb tsa ntau yam. Los ntawm kev nkag siab tag nrho lawv lub zog, kev txwv, thiab kev siv zoo tshaj plaws, cov kws tshaj lij thiab cov neeg sawv cev yuav khoom tuaj yeem ncav cuag cov lus xaus uas txhawb nqa ob qho tib si kev ntseeg siab thiab kev ua haujlwm ntawm cov khoom.

Rau cov kev siv hlau nplaum tshwj xeeb - tshwj xeeb tshaj yog cov uas siv cov hlau nplaum neodymium plaub fab - tsim kev sib raug zoo nrog cov neeg muab kev pabcuam hlau nplaum uas muaj kev paub dhau los feem ntau ua rau muaj txiaj ntsig zoo dua txog kev ua haujlwm thiab tus nqi ntawm qhov project.