Demystifying Strong Magnets

 Dab tsi tiag muab cov hlau nplaum nws qhov kev ua tau zoo?

Thaum cov kws kho mob tshwj xeeb xa mus rau cov hlau nplaum ua "muaj zog," lawv tsis tshua kho ntawm ib tus lej cais los ntawm daim ntawv spec. Qhov tseeb sib nqus lub zog los ntawm kev sib cuam tshuam ntawm ntau yam khoom hauv lub ntiaj teb tiag tiag-thiab nws yog qhov sib xyaw uas cais qhov kev ua tau zoo ntawm kev ua tau zoo uas koj tuaj yeem tso siab rau hauv kev xyaum.

Ntau qhov sib cuam tshuam los txiav txim siab qhov ua tau zoo sib nqus:

Ua ntej yog remanence (Br), uas quantifies lub magnetic flux ib tug hlau nplaum khaws cia thaum nws raug tshem tawm ntawm nws magnetizing teb. Xav txog nws raws li cov hlau nplaum lub hauv paus "sticking base" - lub hauv paus muaj peev xwm nws yuav tsum tau cling rau ferromagnetic cov ntaub ntawv ntev tom qab thawj zaug magnetization txheej txheem xaus. Yog tsis muaj remanence txaus, txawm tias ib lub hlau nplaum tsim los rau lub zog yuav tawm tsam kom tuav tuav hauv kev siv txhua hnub.

Thaum koj ntim tag nrho cov hlau nplaum ruaj khov muaj nyob rau niaj hnub no, ntau yam neodymium tsis tu ncua tawm ua ntej ntawm cov kev xaiv ib txwm muaj xws li ferrite thiab alnico hla txhua qhov kev ntsuas no.

Kev Tshawb Fawb Tom Qab Neodymium's Superiority?

Txij li thaum tsoo qhov tshwm sim hauv xyoo 1980s, cov hlau nplaum neodymium tau hloov pauv qhov tsim muaj peev xwm uas qhov chaw nruj tab sis lub zog sib nqus tsis tuaj yeem cuam tshuam. Lawv qhov tshwj xeeb muaj peev xwm pib tob hauv lawv cov atomic architecture:

Qhov txawv ntawm tetragonal siv lead ua kev npaj hauv NdFeB tsim cov khoom siv dab tsi uas cov kws tshawb fawb lub sij hawm magnetocrystalline anisotropy. Hauv cov ntsiab lus, qhov no txhais tau hais tias cov qauv sib nqus sab hauv ib txwm teeb tsa raws cov kev coj ua uas nyiam, tsim kom muaj kev siv zog zoo kawg li.

Cov hlau nplaum no coj ob qho tib si tseem ceeb thiab tseem ceeb coercivity rau lub rooj, ua rau lawv muaj zog sib nqus teb thaum sawv ntsug rau demagnetization pressures. Qhov kev ua tau zoo sib npaug no ua pov thawj tshwj xeeb hauv kev siv dynamic uas tej yam kev mob tsis tshua muaj nyob zoo.

Neodymium hlau nplaum ua tau zoo heev outclass samarium-cobalt, alnico, thiab ferrite cov neeg sib tw. Qhov kev sib zog ua kom zoo siab no tso cai rau cov pab pawg engineering tsim cov kev sib cog lus ntau dua, cov kev daws teeb meem zoo zog.

Yog vim li cas Rectangular Shapes thiaj li zoo?

Rectangular neodymium hlau nplaumtau tshwm sim raws li kev nyiam nyob thoob plaws ntau qhov chaw uas spatial efficiency yuav tsum sib koom ua ke nrog kev ua haujlwm zoo. Lawv block-zoo li geometry muab ntau yam txiaj ntsig zoo:

Cov chaw tiaj tiaj ua kom muaj kev sib cuag nrog cov ntaub ntawv ferromagnetic, tsim kom muaj zog adhesion dua li cov duab nkhaus lossis cov duab tsis zoo tuaj yeem ua tiav.

Cov kab huv si thiab cov kaum ntse ntse ua kom muaj kev sib koom ua ke rau hauv ob qho tib si kev lag luam khoom siv thiab cov khoom siv, ua kom yooj yim mounting thiab kev sib dhos.

Kev ua lag luam muaj cov hlau nplaum neodymium duab plaub hauv ntau qib kev ua tau zoo (feem ntau N35 txog N52) nrog rau ntau yam txheej txheej xaiv (xws li npib tsib xee, zinc, thiab epoxy) los daws qhov chaw ua haujlwm sib txawv.

Kev piav qhia txog kev tsim khoom

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

Txoj kev sintering pib los ntawm melting raw khoom, hloov lawv mus rau hmoov zoo, compacting nyob rau hauv magnetic orientation, ces sintering thiab precision machining. Txoj kev no ua tiav qhov kev ua tau zoo tshaj plaws sib nqus tab sis xav tau kev tswj xyuas nruj me ntsis ntawm kev tsim cov qoob loo thoob plaws hauv kev tsim.

Bonded hlau nplaum ntau lawm blends magnetic particles nrog yas binders ua ntej molding. Cov hlau nplaum tso zis, txawm tias tsis yooj yim dua thiab ntau cov duab-adaptable, feem ntau ua kom pom cov zis qis dua piv rau sintered versions.

Rau cov hlau nplaum neodymium daim duab plaub, cov neeg tsim khoom lag luam lean hnyav rau txoj kev sintering vim tias cov txheej txheem no khaws cia qhov ntev thaum lav cov txiaj ntsig qib siab - ob qho yuav tsum muaj rau cov ntawv tshaj lij.

Cov Ntsiab Lus Tseem Ceeb

Thaum cov ntawv qhia tshwj xeeb muab cov lus qhia muaj txiaj ntsig, qhov chaw teeb tsa tiag tiag qhia txog qhov hloov pauv ntxiv:

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

Bare NdFeB hlau nplaum tseem raug rau xeb thiab corrosion. Cov chaw tiv thaiv hloov pauv los ntawm kev xaiv ntxiv mus rau qhov yuav tsum tau ua, tshwj xeeb tshaj yog nyob rau hauv qhov chaw ntub dej lossis tshuaj lom neeg nyob ib puag ncig.

Txawm hais tias lawv cov hlau nplaum muaj zog, cov hlau nplaum neodymium nthuav tawm cov brittleness. Kev tuav tsis zoo lossis cuam tshuam thaum teeb tsa tuaj yeem tsim cov chips lossis tawg, thov kom txhob txwm teeb tsa kev coj ua.

Pov thawj Daim Ntawv Thov Cheeb Tsam

Kev sib yuav muaj zog ntawm cov khoom siv hlau nplaum muaj zog thiab tsim qhov chaw zoo ua rau cov hlau nplaum neodymium zoo kawg nkaus haum rau ntau yam kev siv:

Cov tuam txhab hluav taws xob tau muab lawv tso rau hauv cov neeg hais lus, cov khoom siv khaws cia, thiab cov khoom siv hluav taws xob uas cov cuab yeej hauv tsev tsis tshua muaj.

Factory automation systems tsim lawv rau hauv cov cuab yeej sib cais, cov cuab yeej siv tau zoo, thiab cov khoom siv taug qab txoj haujlwm.

Lub tsheb engineers xaiv lawv rau kev tswj fais fab, EV powertrains, thiab kev ua haujlwm paub.

Cua fais fab tej yaam num siv lawv nyob rau hauv generator stacks qhov twg dependability thiab zog concentration suav.

Cov neeg tsim khoom siv kho mob suav nrog lawv rau hauv cov duab kos duab thiab cov cuab yeej ua haujlwm tshwj xeeb.

Cov tswv yim xaiv ntse

Xaiv qhov zoo tshaj plaws hlau nplaum yuav juggling ntau yam:

Txawm hais tias cov qib hwm tau muab lub zog ntau dua, lawv feem ntau ua rau pom qhov tsis yooj yim dua. Qee lub sij hawm xaiv qhov loj me me, qis-qib hlau nplaum yields superior ntev thiab kev lag luam.

Qhov chaw ua haujlwm ib puag ncig yuav tsum txiav txim siab xaiv txheej txheej. Cov neeg tsim khoom yuav tsum ntsuas qhov muaj peev xwm sib cuag nrog cov ntub dej, cov khoom corrosive, thiab lub cev puas tsuaj thaum xaiv cov khoom tiv thaiv tiav.

Koom tes nrog cov neeg tsim khoom uas xa cov qauv tseeb, rov qab ua qauv zoo, thiab qhia kev paub txog kev tsim kho kom zoo rau kev ua haujlwm thiab kev ruaj ntseg.

Cov kev coj ua kev nyab xeeb tseem ceeb

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

Lawv qhov kev ntxim nyiam tuaj yeem ua rau muaj qhov txhab mob hnyav lossis tsim cov khoom tawg yog tias cov hlau nplaum sib tsoo thaum siv.

Khaws cov hlau nplaum muaj zog kom deb ntawm cov khoom siv hluav taws xob, cov khoom siv kho mob, thiab cov khoom siv sib nqus kom tsis txhob muaj kev puas tsuaj lossis cuam tshuam.

Ua tib zoo siv cov iav kev nyab xeeb kom zoo - tshwj xeeb tshaj yog cov looj tsom iav thiab cov hnab looj tes ua lag luam - thaum txhim kho lossis tswj cov hlau nplaum no.

Qhov ntsuas tiag ntawm Magnetic Strength

Ib qho "muaj zog hlau nplaum" tiag tiag muab ntau dua li cov lej kuaj txaus nyiam - nws muab kev ua tau zoo hauv kev ua haujlwm tiag tiag. Rectangular neodymium hlau nplaum tau deservedly tau txais lawv cov xwm txheej raws li cov khoom nyiam rau kev siv xav tau qhov tseem ceeb sib nqus quab yuam, compact proportions, thiab configuration versatility. Los ntawm kev nkag siab tag nrho lawv lub zog, kev txwv, thiab kev siv zoo tagnrho, cov kws tshaj lij thiab cov neeg yuav khoom tuaj yeem ncav cuag cov lus pom zoo uas txhawb nqa cov khoom lag luam thiab kev ua haujlwm.

Rau kev siv cov hlau nplaum tshwj xeeb - tshwj xeeb tshaj yog cov neeg siv cov hlau nplaum neodymium sib npaug - tsim kev sib raug zoo nrog cov kws tshaj lij hlau nplaum feem ntau ua rau cov txiaj ntsig zoo tshaj plaws txog kev ua tau zoo thiab qhov project tus nqi.