Cov hlau nplaum yog nyob txhua qhov chaw, los ntawm cov motors thiab sensors mus rau separators thiab industrial fixtures. Tab sis qhov tseem ceeb yog dab tsi cov hlau nplaum yog ua los ntawm, vim hais tias cov khoom txiav txim siab lub zog, kub txwv, corrosion kuj, thiab ntev - lub sij hawm stability.
Hauv phau ntawv qhia no, koj yuav kawm txog cov khoom siv hlau nplaum feem ntau, lawv sib piv li cas, thiab yuav ua li cas xaiv qhov kev xaiv zoo rau koj daim ntawv thov.
Cov lus teb luv luv: Cov hlau nplaum feem ntau ua los ntawm dab tsi?
Cov hlau nplaum nyob ruaj khov feem ntau yog tsim los ntawm NdFeB (neodymium- hlau- boron), ferrite (ceramic magnet), SmCo (samarium-} cobalt), los yog AlNiCo (aluminium-nickel-}cobalt). Qhov "zoo tshaj" yog nyob ntawm plaub yam: qhov yuav tsum tau muaj zog, ua haujlwm kub, ib puag ncig (humidity / ntsev / tshuaj), thiab qhov chaw muaj.
NdFeB: muaj zog tshaj plaws hauv me me (feem ntau xav tau txheej hauv qhov chaw ntub dej)
Ferrite: tus nqi qis + zoo corrosion kuj (feem ntau loj loj rau tib lub zog)
SmCo: zoo heev - kub stability + muaj zog tiv thaiv demagnetization
AlNiCo: siab kub muaj peev xwm thiab ruaj khov hlau nplaum (tab sis yooj yim rau demagnetize dua SmCo hauv qee qhov qauv)
Kev Tshawb Fawb Ceev: Qhia peb 6 yam khoom no
Txhawm rau pom zoo cov ntaub ntawv raug (thiab tshaj tawm sai dua), thov xa:
Magnet puab (disc / thaiv / nplhaib / countersunk / arc / lauj kaub)
Loj (mm)
Ntau
Kev khiav hauj lwm qhov kub thiab txias
Ib puag ncig (qhuav / humid / ntsev pos huab / tshuaj)
Lub hom phiaj xav tau: rub quab yuam (N / kgf) lossis nto Gauss ntawm qhov deb
Yuav Ua Li Cas Magnets Ua Haujlwm
Magnetism los ntawm cov teebmeem me me hauv cov atoms. Hauv ntau cov ntaub ntawv, cov teebmeem no tshem tawm. Hauv cov khoom sib nqus, ntau lub atomic "mini magnets" tuaj yeem ua kab, tsim kom muaj zog sib nqus.
Atomic-theem magnetism
Electrons tsim me me lub sij hawm sib nqus los ntawm lawv cov kiv thiab txav. Hauv cov ntaub ntawv xws li hlau, npib tsib xee, thiab cobalt, lub sijhawm no tuaj yeem ua kom yooj yim dua, uas yog vim li cas cov ntaub ntawv no muaj zog sib nqus.
Magnetic domains thiab magnetization
Cov khoom siv hlau nplaum muaj ntau thaj chaw me me hu ua domains. Ua ntej magnetizing, cov domains taw tes rau hauv cov lus qhia sib txawv. Tom qab magnetizing, ntau qhov sib npaug, thiab cov hlau nplaum yuav muaj zog.
Sib nqus teb thiab sib cuam tshuam
Cov hlau nplaum lub teb muaj kev taw qhia thiab lub zog. Zoo li tus ncej tawm thiab tsis zoo li tus ncej nyiam. Qhov no kuj yog vim li cas cov hlau nplaum cuam tshuam nrog cov hluav taws xob tam sim no hauv motors thiab ntau yam khoom siv.
Hom Magnets
Cov hlau nplaum ruaj khov
Cov hlau nplaum tas mus li hais txog cov ntaub ntawv uas tuaj yeem tswj tau lawv cov hlau nplaum ntev ntev tom qab tau hlau nplaum thiab tuaj yeem muab cov hlau nplaum txuas ntxiv yam tsis muaj zog sab nraud. Cov ntaub ntawv uas muaj xws li:Neodymium hlau boron(NdFeB, cov khoom siv hluav taws xob sib nqus siab tshaj plaws, siv hauv cov khoom siv hluav taws xob thiab hluav taws xob tsheb), ferrite (tus nqi qis, tsim nyog rau cov neeg hais lus thiab microwave ncu), thiab aluminium nickel cobalt (siab kub tsis kam thiab tiv thaiv-demagnetization, haum rau qhov kub thiab txias). Nws cov yam ntxwv yog tias nws cov hlau nplaum ntev ntev - kav ntev tab sis yuav lwj vim qhov kub thiab txias los yog sab nraud quab yuam, thiab nws nyuaj rau demagnetize tag nrho. Nws yog dav siv nyob rau hauv motors, generators, sensors, maglev tsheb ciav hlau, thiab sib nqus cia.
Hluav taws xob
Lub tshuab electromagnet yog ib qho kev sib txuas ntawm ib lub kauj thiab ib tug hlau core. Nws txoj hauv kev ua haujlwm yog tias thaum lub hwj chim qhib, cov hlau nplaum tsim los ntawm lub kauj ua raws li txoj cai Ampere voj voog. Tom qab cov tub ntxhais hlau yog magnetized, lub magnetic teb yog ho txhim khu kev qha, thiab cov hlau nplaum yuav ploj tam sim ntawd tom qab lub hwj chim raug muab tua (tshwj tsis yog rau cov hlau nplaum seem ntawm cov tub ntxhais hlau). Nws cov hlau nplaum tuaj yeem tswj tau los ntawm qhov loj thiab cov kev taw qhia ntawm qhov tam sim no, thiab lub zog hlau nplaum muaj qhov cuam tshuam zoo nrog rau qhov tam sim no thiab cov xov tooj ntawm cov kauj. Electromagnets yog dav siv nyob rau hauv electromagnetic cranes, relays, locks, shielding, thiab induction cua sov khoom.
Cov hlau nplaum ib ntus
Cov hlau nplaum ib ntus yog cov khoom ua los ntawm cov khoom sib nqus mos (xws li hlau ntshiab, silicon steel los xij, thiab cov khoom sib nqus mos mos). Lawv cov hlau nplaum yog yooj yim magnetized nyob rau hauv qhov kev txiav txim ntawm sab nraud magnetic teb, tab sis cov hlau nplaum yuav sai sai tsis muaj zog los yog ploj tom qab lub magnetic teb raug tshem tawm. Cov khoom siv no muaj cov yam ntxwv ntawm qis hysteresis poob thiab tshwj xeeb tshaj yog haum rau siab - cov khoom siv hluav taws xob ntau zaus. Nws yog feem ntau siv rau hauv transformer cores (ntau zaus xa hluav taws xob hluav taws xob), electromagnetic shielding (blocking sab nraud magnetic teb cuam tshuam), thiab magnetic sensors.
Dab tsi yog cov khoom tseem ceeb ntawm cov hlau nplaum muaj?
|
Hom |
Cov khoom xyaw tseem ceeb |
Nta |
Qhov zoo tshaj plaws rau kev siv ib txwm |
|
NdFeB Magnets |
Neodymium (Nd), Hlau (Fe), boron (B) |
Tam sim no, nws muaj qhov muaj zog tshaj hlau nplaum thiab cov khoom siv hluav taws xob sib nqus, tab sis nws qhov kub tsis kam yog qhov nruab nrab (80-200 degree), nws yooj yim rau corrode, thiab xav tau kev kho deg. |
Compact siab - quab yuam tsim, motors, sensors |
|
Ferrite Magnets |
Hlau oxide (Fe₂O₃) + barium / strontium carbonate (BaCO₃ / SrCO₃) |
Tus nqi qis, muaj zog corrosion kuj, Kub kub tsis kam (txog 250 degree), tab sis tsis muaj zog hlau nplaum |
Cov neeg hais lus, kev siv dav dav hauv kev lag luam, tus nqi -sensitive applications |
|
AlNiCo hlau nplaum |
Aluminium (Al), Nickel (Ni), Cobalt (Co), Hlau (Fe) |
Kub kub tsis kam (450-550 degree), zoo sib nqus ruaj khov, tab sis nruab nrab sib nqus quab yuam, thiab yooj yim rau demagnetize |
High -cov twj ntsuas kub, sensors, tshwj xeeb sib dhos |
|
Samarium CobaltMagnets |
Samarium (Sm), Cobalt (Co) |
Kev ua haujlwm kub zoo heev (250-350 degree), corrosion kuj, zoo sib nqus ruaj khov, tab sis kim thiab nkig |
High -temp motors, aerospace, hnyav ib puag ncig |
Yam khoom siv hlau nplaum twg koj yuav tsum xaiv?
| Koj Yuav Tsum Tau | Qhov Zoo Tshaj Plaws Thawj | Sau ntawv |
| Lub zog muaj zog tshaj plaws hauv qhov chaw txwv | NdFeB | Xav txog txheej rau qhov chaw ntub dej / ntsev |
| Tus nqi qis tshaj, corrosion kuj tseem ceeb | Ferrite | Feem ntau xav tau qhov loj dua kom ncav cuag tib lub zog |
| Kub kub + ruaj khov ua haujlwm | SmCo | Tus nqi siab dua; kov kom zoo (nkig) |
| Muaj peev xwm kub heev | AlNiCo | Zoo stability, tab sis tus tsim yuav tsum tiv thaiv demagnetization |
Magnet Manufacturing txheej txheem
Muaj ntau yam kev tsim khoom rau cov hlau nplaum, feem ntau suav nrog cov hmoov hlau metallurgy, casting, thiab lwm yam. Txawm hais tias kev taw qhia magnetic teb tsis ncaj qha rau cov txheej txheem tsim khoom, nws plays lub luag haujlwm tseem ceeb hauv cov hlau nplaum kev ua tau zoo thiab kev tswj kom zoo.
Cov hauv qab no yog cov ncauj lus kom ntxaws txog cov txheej txheem no:
Hmoov hlau metallurgy yog ib txoj hauv kev zoo rau kev tsim cov hlau nplaum, thiab tshwj xeeb tshaj yog tsim rau kev tsim cov khoom siv hlau nplaum siab -kev ua haujlwm ruaj khov xws li neodymium hlau boron (NdFeB) thiabsamarium cobalt hlau nplaum.
Hmoov metallurgy
Txheej txheem
Raw khoom npaj:Xaiv high -purity hlau hmoov, xws li neodymium, hlau, boron (los yog samarium, cobalt), thiab lwm yam, thiab sib tov rau hauv ib qho kev faib ua feem.
Nias molding: Cov hmoov sib tov yog nias rau hauv cov duab hauv ib qho chaw sib nqus kom cov hmoov nplej tau npaj raws li cov kev taw qhia ntawm cov magnetic teb los tsim ib lub cev ntsuab nrog ib qho zoo thiab ntom.
Sintering: Lub cev ntsuab yog sintered ntawm qhov kub siab los ua ke cov khoom thiab tsim cov hlau nplaum ntom ntom.
Tshaj tawm - kev ua haujlwm: suav nrog machining, kho deg, electroplating, txheej, magnetization, thiab lwm yam.
Daim ntawv thov: Siv dav hauv motors, sensors, speaker, magnetic resonance imaging (MRI) equipment, and other fields.
Txoj Kev Casting
Txheej txheem
Melting:Melt cov khoom siv hlau, xws li txhuas, npib tsib xee, cobalt, hlau, thiab lwm yam, rau hauv cov kua alloy hauv kev faib ua feem.
Casting:Ncuav lub molten alloy rau hauv pwm thiab txias, l thiab solidify nws mus rau hauv ib tug dawb paug.
Kev kho cua sov:Los ntawm kev daws kev kho mob thiab kev laus kev kho mob, microstructure thiab cov khoom sib nqus ntawm cov hlau nplaum yog optimized.
Machining:Ua qhov khoob rau hauv cov duab thiab qhov loj me.
Magnetization:Them ib tug hlau nplaum nyob rau hauv ib tug muaj zog magnetic teb.
Daim ntawv thov:Feem ntau yog siv los tsim cov hlau nplaum hauv cov cuab yeej, lub cev muaj zog, hais lus, sib nqus sib nqus, thiab lwm yam khoom siv.
Sib Nqus Field Orientation
Txheej txheem
Hmoov filling:Muab cov hmoov sib nqus (xws li NdFeB hmoov) rau hauv pwm, kom ntseeg tau tias cov hmoov sib npaug.
Siv lub magnetic teb:Tom qab cov hmoov txhaws tiav lawm, ib qho chaw sib nqus muaj zog ua raws li qhov kawg kev taw qhia ntawm cov hlau nplaum yog siv rau pwm, thiab nws qhov kev siv zog feem ntau ncav cuag ntau tshaj kaum tawm txhiab tus gauss los xyuas kom meej tias cov nplej hauv cov hmoov sib nqus tuaj yeem ua tiav.
Sib nqus teb tuav thiab nias molding:Cov hmoov yog nias nyob rau hauv qhov kev txiav txim ntawm lub magnetic teb thiaj li hais tias cov particles nyob ze, thiab lub magnetic teb orientation kev taw qhia yog tswj. Thaum lub sij hawm tus txheej txheem no, lub magnetic teb yuav tsum tau nyob ruaj khov kom tsis txhob muaj cov nplej orientation los ntawm kev cuam tshuam.
Sintering thiab txias:Lub pressed dawb paug yog sintered nyob rau hauv high kub kom muab cov hmoov hais. Thaum lub sijhawm txheej txheem no, ib qho chaw sib nqus tuaj yeem khaws cia kom zoo rau kev taw qhia. Tom qab sintering, nws yuav tsum tau txias maj mam kom tsis txhob thermal stress.
Daim ntawv thov:Sib nqus teb orientation tshuab yog dav siv nyob rau hauv kev tsim cov high-cov hlau nplaum ruaj khov, xws li NdFeB hlau nplaum, SmCo hlau nplaum, thiab lwm yam. Cov hlau nplaum no tau siv dav hauv siab -precision, siab- kev ua tau zoo motors, generators, thiab sensors.
Yuav xaiv cov khoom siv hlau nplaum li cas
Txheeb xyuas daim ntawv thov scenarios thiab xav tau
Nyob rau hauv ib puag ncig kev ua haujlwm sib txawv thiab kev ua haujlwm, kev xaiv cov hlau nplaum yuav tsum raug txiav txim siab; nyob rau hauv siab - qhov kub thiab txias ib puag ncig, Alnico los yog samarium cobalt hlau nplaum yog haum rau aerospace thiab automotive engine sensors; ferrite hlau nplaum yuav siv tau nyob rau hauv corrosive, humid, thiab tshuaj ib puag ncig. Hais txog kev ua haujlwm, NdFeB hlau nplaum uas muaj zog sib nqus yog tsim rau cov khoom siv hlau nplaum uas nqus cov khoom hlau; NdFeB, Alnico, lossis ferrite tuaj yeem xaiv rau lub cev muaj zog thiab cov khoom siv hluav taws xob hloov hluav taws xob raws li lub zog, qhov loj me, thiab tus nqi; Alnico hlau nplaum yog qhov nyiam rau cov khoom siv MRI uas yuav tsum tau ua kom ntev - lub sij hawm ruaj khov magnetic teb.
Xav txog Magnetic Performance Parameters
NdFeB hlau nplaum muaj cov khoom sib nqus zoo tshaj plaws thiab lub siab tshaj plaws magnetic teb lub zog, tab sis samarium cobalt hlau nplaum muaj tib lub siab coercivity thiab tsim nyog rau scenarios nrog demagnetization txaus ntshai; ferrite hlau nplaum muaj tus nqi qis thiab cov khoom sib nqus tsis muaj zog, thiab tsim nyog rau thaj chaw uas tsis tas yuav muaj lub zog sib nqus siab thiab raug nqi -sensitive; Alnico hlau nplaum thiab samarium cobalt hlau nplaum muaj qhov kub tsis tshua muaj coefficients, thiab lawv cov khoom sib nqus tsis tshua muaj kev cuam tshuam los ntawm qhov kub thiab txias, ua rau lawv haum rau cov cheeb tsam uas muaj qhov kub thiab txias.
Nqi thiab Muaj
Muaj qhov sib txawv ntawm tus nqi thiab muaj nyob ntawm cov khoom sib txawv ntawm cov hlau nplaum: Ferrite hlau nplaum yog cov hlau nplaum uas siv tau zoo tshaj plaws vim lawv cov nqi pheej yig; Txawm hais tias neodymium hlau boron hlau nplaum muaj kev ua tau zoo heev, tus nqi ntawm cov khoom siv raw ua rau lawv cov nqi siab, thiab nws yog ib qho tsim nyog yuav tsum sib npaug ntawm kev ua tau zoo thiab kev tswj tus nqi thaum xaiv; Cov khoom siv feem ntau suav nrog ferrite thiab neodymium hlau boron, uas muaj cov khoom ruaj khov thiab yooj yim rau kev yuav khoom, thaum cov khoom tshwj xeeb xws li samarium cobalt hlau nplaum yog cov khoom siv tsawg, thiab cov khoom yuav tsum tau npaj.
Dab tsi txiav txim siab qhov muaj zog ntawm cov hlau nplaum?
1. Khoom siv thiab qib
NdFeB tuaj yeem xa cov khoom sib nqus zoo heev hauv qhov me me, thaum ferrite tsis muaj zog tab sis ruaj khov thiab tus nqi - zoo. SmCo thiab AlNiCo ua tau zoo nyob rau hauv qhov kub thiab txias. Qhov tshwm sim yog nyob ntawm qib thiab kev ua haujlwm.
2. Cov duab, qhov loj me, thiab qhov sib txawv ntawm huab cua
Qhov sib txawv me me ntawm huab cua tuaj yeem ua rau muaj zog tuav. Cov duab kuj tseem ceeb -geometries sib txawv kom pom tseeb flux txawv.
3. Kub thiab sab nraud sib nqus teb
Thaum tshav kub kub tuaj yeem txo cov hlau nplaum lub zog, thiab lub zog rov qab tuaj yeem ua rau demagnetization. Xaiv cov khoom siv thiab qib zoo yog qhov kev tiv thaiv zoo tshaj plaws.
FAQ
Q: Cov hlau nplaum puas poob hlau nplaum?
A: Yog. Thaum tshav kub kub, muaj zog cuam tshuam, los yog rov qab magnetic teb tuaj yeem ua rau cov hlau nplaum tsis muaj zog. Xaiv cov khoom tsim nyog thiab qib rau koj qhov kub thiab txias pab tiv thaiv kev demagnetization ntxov.
Q: Cov hlau twg tuaj yeem nyiam cov hlau nplaum?
A: Cov hlau nplaum nyiam nyiam cov hlau ferromagnetic xws li hlau, npib tsib xee, thiab cobalt, thiab ntau ntawm lawv cov alloys.
Q: Yuav khaws cov hlau nplaum li cas?
A: Khaws cov hlau nplaum rau hauv qhov chaw qhuav, tsis txhob muaj cua sov thiab cuam tshuam, thiab khaws cov hlau nplaum muaj zog kom deb ntawm cov khoom siv hluav taws xob. Siv spacers lossis cov neeg khaws khoom thaum xav tau los txo qhov kev sib tsoo.
Q: Vim li cas NdFeB hlau nplaum xeb yooj yim dua?
A: NdFeB tuaj yeem corrode nyob rau hauv qhov chaw ntub dej lossis qab ntsev. Cov txheej tiv thaiv feem ntau yog siv rau sab nraum zoov, ntub dej, lossis siab - cov av noo.
Q: Cov hlau nplaum puas txaus ntshai?
A: Hauv kev siv ib txwm, cov hlau nplaum feem ntau muaj kev nyab xeeb. Cov kev pheej hmoo tseem ceeb yog kev raug mob pinch, cov hlau nplaum muaj zog nyob ze ntawm cov pacemakers / implants, thiab nqos ntau cov hlau nplaum (tshwj xeeb tshaj yog rau cov menyuam yaus). Hauv MRI lossis ib puag ncig kev kho mob, ua raws li cov cai tswj kev nyab xeeb hauv tsev.
Cov ntsiab lus
Cov hlau nplaum yog tsim los ntawm cov khoom sib txawv, thiab txhua tus haum rau txoj haujlwm sib txawv. NdFeB yog qhov zoo tshaj plaws rau qhov siab tshaj plaws hauv qhov chaw me me, ferrite yog tus nqi - kev xaiv zoo nrog kev tiv thaiv corrosion zoo, SmCo zoo heev rau siab - qhov kub thiab txias, thiab AlNiCo ua haujlwm zoo nyob rau hauv siab heev - kub tsim.
Yog tias koj xav tau kev pom zoo sai dua thiab tus nqi raug, xa Great Magtech koj cov hlau nplaum zoo, qhov loj, qhov kub thiab txias, ib puag ncig, thiab lub hom phiaj rub lub zog. Peb mam li qhia cov khoom zoo + qib, + txheej rau koj daim ntawv thov.
