Nkag siab txog kev paub txog cov khoom siv hlau nplaum

2022-01-11

1. Vim li cas cov hlau nplaum sib nqus?

Feem ntau cov teeb meem yog tsim los ntawm cov molecules uas yog tsim los ntawm atoms uas nyob rau hauv lem yog ua los ntawm nuclei thiab electrons. Nyob rau hauv ib lub atom, electrons tig thiab tig ib ncig ntawm lub nucleus, ob qho tib si uas tsim cov hlau nplaum. Tab sis nyob rau hauv feem ntau qhov teeb meem, cov electrons txav nyob rau hauv tag nrho cov hom ntawm random cov lus qhia, thiab cov magnetic cuam tshuam tshem tawm ib leeg. Yog li ntawd, feem ntau cov tshuaj tsis pom cov hlau nplaum nyob rau hauv ib txwm muaj.

Tsis zoo li ferromagnetic cov ntaub ntawv xws li hlau, cobalt, npib tsib xee los yog ferrite, lub sab hauv electron spin tau spontaneously kab nyob rau hauv me me, tsim ib tug spontaneous magnetization cheeb tsam hu ua ib tug sib nqus domain. Thaum cov ntaub ntawv ferromagnetic yog magnetized, lawv cov khoom sib nqus sab hauv sib dhos zoo zoo thiab nyob rau tib qho kev taw qhia, ntxiv dag zog rau cov hlau nplaum thiab tsim cov hlau nplaum. Cov txheej txheem magnetization ntawm cov hlau nplaum yog cov txheej txheem magnetization ntawm cov hlau. Cov hlau nplaum hlau nplaum thiab cov hlau nplaum muaj qhov sib txawv polarity attraction, thiab cov hlau yog khov kho "kab" ua ke nrog cov hlau nplaum.

2. Yuav txhais li cas rau kev ua haujlwm ntawm cov hlau nplaum?

Muaj peb qhov kev ua tau zoo los txiav txim siab qhov ua tau zoo ntawm cov hlau nplaum:
Remanent Br: Tom qab cov hlau nplaum tas mus li yog magnetized rau kev saturation thiab sab nraud magnetic teb raug tshem tawm, qhov khaws cia Br yog hu ua residual magnetic induction intensity.
Coercivity Hc: Txhawm rau txo qhov B ntawm cov hlau nplaum ruaj khov rau kev ua haujlwm saturation mus rau xoom, qhov rov qab sib nqus hlau nplaum yuav tsum tau hu ua magnetic coercivity, lossis coercivity luv luv.
Cov khoom siv hluav taws xob sib nqus BH: sawv cev rau lub zog sib nqus tsim los ntawm cov hlau nplaum hauv qhov chaw huab cua (qhov chaw nruab nrab ntawm ob qhov sib nqus ntawm cov hlau nplaum), uas yog, lub zog sib nqus sib nqus ntawm ib chav tsev ntim ntawm cov pa sib txawv.

3. Yuav ua li cas cais cov khoom siv hlau nplaum?

Cov khoom siv hlau nplaum yog muab faib ua cov khoom sib nqus ruaj khov thiab cov khoom sib nqus mos. Feem ntau, cov khoom siv nrog intrinsic coercivity ntau dua 0.8kA / m yog hu ua cov khoom sib nqus mus tas li, thiab cov khoom siv nrog intrinsic coercivity tsawg dua 0.8kA / m yog hu ua cov khoom sib nqus mos.

4. Kev sib piv ntawm lub zog sib nqus ntawm ntau hom kev siv hlau nplaum

Sib nqus quab yuam los ntawm loj mus rau me me: Ndfeb hlau nplaum, samarium cobalt hlau nplaum, aluminium nickel cobalt hlau nplaum, ferrite hlau nplaum.

5. Kev sib deev valence piv ntawm cov khoom sib nqus sib txawv?

Ferrite: qis thiab nruab nrab kev ua tau zoo, tus nqi qis tshaj, zoo kub yam ntxwv, corrosion kuj, kev ua tau zoo tus nqi piv
Ndfeb: kev ua tau zoo tshaj plaws, tus nqi nruab nrab, lub zog zoo, tsis tiv taus kub thiab corrosion
Samarium cobalt: kev ua tau zoo, siab tshaj tus nqi, nkig, zoo heev kub yam ntxwv, corrosion kuj
Aluminium nickel cobalt: kev ua haujlwm qis thiab nruab nrab, tus nqi nruab nrab, tus yam ntxwv kub zoo, tiv thaiv corrosion, cuam tshuam tsis zoo
Samarium cobalt, ferrite, Ndfeb tuaj yeem ua los ntawm sintering thiab bonding method. Cov cuab yeej sib nqus sintering yog siab, kev sib sau tsis zoo, thiab cov hlau nplaum sib txuas yog qhov zoo thiab kev ua haujlwm tau txo qis ntau. AlNiCo tuaj yeem tsim los ntawm txoj kev casting thiab sintering, casting hlau nplaum muaj zog dua thiab tsis zoo formability, thiab sintered hlau nplaum muaj qis zog thiab zoo formability.

6. Cov yam ntxwv ntawm Ndfeb hlau nplaum

Ndfeb cov khoom sib nqus ruaj khov yog cov khoom sib nqus ruaj khov raws li cov khoom sib nqus intermetallic Nd2Fe14B. Ndfeb muaj cov khoom siv hluav taws xob sib nqus zoo heev thiab lub zog, thiab qhov zoo ntawm lub zog ntom ntom ua rau ndFEB cov khoom siv hlau nplaum ruaj khov siv dav hauv kev lag luam niaj hnub thiab tshuab hluav taws xob, kom cov twj paj nruag, electroacoustic motors, sib nqus sib nqus magnetization khoom miniaturization, lub teeb yuag, nyias ua ua tau.

Cov yam ntxwv ntawm cov khoom siv: Ndfeb muaj qhov zoo ntawm kev ua haujlwm siab, nrog cov yam ntxwv zoo; Qhov tsis zoo yog qhov ntsuas kub ntawm Curie yog qhov qis, qhov ntsuas kub tsis zoo, thiab nws yooj yim rau hmoov corrosion, yog li nws yuav tsum tau txhim kho los ntawm kev kho nws cov tshuaj muaj pes tsawg leeg thiab siv qhov chaw kho mob kom tau raws li qhov yuav tsum tau ua ntawm kev siv tswv yim.
Cov txheej txheem tsim khoom: Kev tsim khoom ntawm Ndfeb siv cov txheej txheem hmoov metallurgy.
Cov txheej txheem ntws: batching â†' melting ingot ua â†' hmoov ua â†' nias â†' sintering tempering â†' magnetic detection â†' sib tsoo â†' pin txiav â†' electroplating â†' cov khoom tiav.

7. Dab tsi yog cov hlau nplaum ib sab?

Magnet muaj ob tug ncej, tab sis nyob rau hauv ib co txoj hauj lwm yuav tsum tau ib tug ncej hlau nplaum, yog li ntawd peb yuav tsum tau siv hlau rau ib tug hlau nplaum encase, hlau los ntawm ib sab ntawm cov hlau nplaum shielding, thiab los ntawm lub refraction mus rau lwm sab ntawm cov hlau nplaum phaj, ua rau lwm yam. sab ntawm cov hlau nplaum sib nqus ntxiv dag zog, xws li cov hlau nplaum sib sau ua ke hu ua ib leeg sib nqus lossis hlau nplaum. Tsis muaj qhov zoo li qhov tseeb ib-sided hlau nplaum.
Cov khoom siv rau cov hlau nplaum ib leeg yog feem ntau arc hlau daim ntawv thiab Ndfeb muaj zog hlau nplaum, cov duab ntawm ib sab hlau nplaum rau ndFEB muaj zog hlau nplaum feem ntau yog puag ncig.

8. Kev siv cov hlau nplaum ib leeg yog dab tsi?

(1) Nws yog dav siv hauv kev lag luam luam ntawv. Muaj cov hlau nplaum ib sab hauv lub thawv khoom plig, lub thawv xov tooj, lub thawv luam yeeb thiab cawv, lub thawv xov tooj, MP3 lub thawv, lub thawv ncuav mog qab zib hli thiab lwm yam khoom.
(2) Nws yog dav siv hauv kev lag luam tawv khoom. Hnab, hnab ntawv, hnab mus ncig, hnab xov tooj, hnab nyiaj thiab lwm yam khoom tawv tawv txhua tus muaj cov hlau nplaum ib sab.
(3) Nws yog dav siv hauv kev lag luam sau ntawv. Ib-sab hlau nplaum muaj nyob rau hauv phau ntawv sau, whiteboard nyees khawm, folders, magnetic nameplates thiab hais txog.

9. Dab tsi yuav tsum tau them sai sai rau thaum thauj cov hlau nplaum?

Ua tib zoo saib xyuas cov av noo hauv tsev, uas yuav tsum tau khaws cia ntawm qhov qhuav. Tsis txhob tshaj chav tsev kub; Dub thaiv los yog lub xeev dawb paug ntawm cov khoom cia tuaj yeem raug coated nrog roj (cov roj dav dav); Electroplating cov khoom yuav tsum yog lub tshuab nqus tsev kaw los yog huab cua cais tawm, kom ntseeg tau qhov kev tiv thaiv corrosion ntawm txheej; Cov khoom siv hlau nplaum yuav tsum tau nqus ua ke thiab khaws cia rau hauv lub thawv kom tsis txhob nqus lwm lub cev hlau; Cov khoom siv hlau nplaum yuav tsum muab khaws cia kom deb ntawm cov khoom sib nqus, daim npav sib nqus, daim nplaum nplaum, lub khoos phis tawj saib, saib thiab lwm yam khoom rhiab heev. Magnet magnetization xeev yuav tsum tau tiv thaiv thaum lub caij tsheb thauj mus los, tshwj xeeb tshaj yog kev thauj mus los hauv huab cua yuav tsum tau tiv thaiv tag nrho.

10. Yuav ua li cas kom tau txais kev sib nqus sib nqus?

Tsuas yog cov khoom uas tuaj yeem txuas nrog cov hlau nplaum tuaj yeem thaiv cov hlau nplaum, thiab cov khoom tuab dua, qhov zoo dua.

11. Yam khoom ferrite twg ua rau hluav taws xob?

Mos sib nqus ferrite belongs rau cov khoom sib nqus conductivity, tshwj xeeb permeability, siab resistivity, feem ntau yog siv nyob rau hauv high zaus, feem ntau yog siv nyob rau hauv hluav taws xob kev sib txuas lus. Zoo li cov khoos phis tawj thiab TVS peb kov txhua hnub, muaj cov ntawv thov hauv lawv.
Mos ferrite feem ntau suav nrog manganese-zinc thiab npib tsib xee-zinc thiab lwm yam. Manganese-zinc ferrite magnetic conductivity yog ntau dua li cov nickel-zinc ferrite.
Curie kub ntawm cov hlau nplaum ruaj khov ferrite yog dab tsi?
Nws tau tshaj tawm tias qhov kub ntawm Curie ntawm ferrite yog li 450ºƒ, feem ntau ntau dua lossis sib npaug rau 450ºƒ. Lub hardness yog hais txog 480-580. Curie kub ntawm Ndfeb hlau nplaum yog qhov nruab nrab ntawm 350-370ºƒ. Tab sis qhov kev siv kub ntawm Ndfeb hlau nplaum tsis tuaj yeem ncav cuag Curie kub, qhov kub thiab txias yog ntau tshaj 180-200â ƒ cov cuab yeej sib nqus tau attenuated ntau, sib nqus poob kuj loj heev, tau poob tus nqi siv.

13. Dab tsi yog qhov ua tau zoo ntawm cov tub ntxhais hlau nplaum?

Sib nqus cores, tshwj xeeb tshaj yog cov ntaub ntawv ferrite, muaj ntau yam geometric qhov ntev. Txhawm rau ua kom tau raws li ntau yam kev tsim qauv, qhov loj ntawm cov tub ntxhais tseem raug xam kom haum raws li qhov yuav tsum tau ua kom zoo. Cov kev ntsuas tseem ceeb uas twb muaj lawm no suav nrog cov kev ntsuas lub cev xws li txoj kev sib nqus, thaj chaw zoo thiab qhov ntim tau zoo.

14. Vim li cas kaum lub vojvoog tseem ceeb rau kev ua kom cua?

Lub kaum sab xis ntawm lub kaum sab xis yog qhov tseem ceeb vim tias yog lub ntug ntawm cov tub ntxhais ntse ntse heev, nws tuaj yeem rhuav tshem cov rwb thaiv tsev ntawm cov hlau thaum lub sij hawm cov txheej txheem winding. Xyuas kom tseeb tias cov npoo npoo yog du. Ferrite cores yog pwm nrog tus qauv roundness vojvoog, thiab cov cores no polished thiab deburred kom txo tau cov sharpness ntawm lawv cov npoo. Tsis tas li ntawd, feem ntau cov cores yog pleev xim los yog npog tsis tau tsuas yog ua kom lawv cov ces kaum passivated, tab sis kuj ua rau lawv winding nto du. Cov hmoov core muaj lub vojvoog siab ntawm ib sab thiab deburring ib nrab-lub voj voog ntawm sab nraud. Rau cov ntaub ntawv ferrite, ib qho ntxiv ntug npog yog muab.

15. Hom hlau nplaum twg yog qhov tsim nyog rau kev hloov pauv?

Yuav kom ua tau raws li qhov xav tau ntawm cov tub ntxhais transformer yuav tsum muaj qhov sib nqus sib nqus induction siab ntawm ib sab, ntawm qhov tod tes kom nws qhov kub thiab txias tsis pub dhau ib qho kev txwv.
Rau inductance, cov tub ntxhais hlau nplaum yuav tsum muaj qhov sib txawv ntawm huab cua kom ntseeg tau tias nws muaj qee theem ntawm permeability nyob rau hauv cov ntaub ntawv ntawm siab DC los yog AC tsav, ferrite thiab cov tub ntxhais yuav ua tau huab cua sib txawv, hmoov core muaj nws tus kheej huab cua sib txawv.

16. Dab tsi ntawm cov hlau nplaum zoo tshaj plaws?

Nws yuav tsum tau hais tias tsis muaj lus teb rau qhov teeb meem, vim hais tias qhov kev xaiv ntawm cov tub ntxhais hlau nplaum yog txiav txim siab raws li kev siv thiab kev siv zaus, thiab lwm yam, txhua yam khoom siv thiab kev ua lag luam yuav tsum xav txog, piv txwv li, qee cov khoom siv tuaj yeem ua kom ntseeg tau cov khoom siv. kub nce yog me me, tab sis tus nqi yog kim, yog li, thaum xaiv cov khoom tiv thaiv qhov kub thiab txias, nws muaj peev xwm xaiv ib tug loj loj tab sis cov khoom uas muaj tus nqi qis los ua kom tiav cov hauj lwm, yog li xaiv cov ntaub ntawv zoo tshaj plaws rau daim ntawv thov. rau koj thawj inductor lossis transformer, los ntawm qhov no, kev khiav hauj lwm zaus thiab tus nqi yog qhov tseem ceeb, xws li kev pom zoo ntawm cov khoom sib txawv yog nyob ntawm qhov hloov zaus, qhov kub thiab qhov sib nqus flux ceev.

17. Dab tsi yog anti-interference magnetic nplhaib?

Anti-interference magnetic nplhaib tseem hu ua ferrite magnetic nplhaib. Hu rau qhov chaw tiv thaiv kev cuam tshuam sib nqus hlau nplaum, yog tias nws tuaj yeem ua lub luag haujlwm ntawm kev cuam tshuam kev cuam tshuam, piv txwv li, cov khoom siv hluav taws xob, los ntawm kev cuam tshuam sab nraud, kev cuam tshuam ntawm cov khoom siv hluav taws xob, cov khoom siv hluav taws xob tau txais cov teeb liab cuam tshuam sab nraud, tsis tau. muaj peev xwm khiav tau ib txwm, thiab tiv thaiv kev cuam tshuam cov nplhaib sib nqus, tsuas yog tuaj yeem muaj qhov ua haujlwm no, tsuav yog cov khoom siv thiab cov khoom siv los tiv thaiv kev cuam tshuam sib nqus, nws tuaj yeem tiv thaiv cov teeb liab cuam tshuam sab nraud rau hauv cov khoom siv hluav taws xob, Nws tuaj yeem ua rau cov khoom siv hluav taws xob ua haujlwm zoo li qub thiab ua si tiv thaiv kev cuam tshuam, yog li nws yog hu ua anti-interference magnetic nplhaib.

Anti-interference magnetic nplhaib tseem hu ua ferrite magnetic nplhaib, vim ferrite magnetic nplhaib nws yog ua los ntawm hlau oxide, npib tsib xee oxide, zinc oxide, tooj liab oxide thiab lwm yam ntaub ntawv ferrite, vim hais tias cov ntaub ntawv no muaj ferrite Cheebtsam, thiab ferrite cov ntaub ntawv tsim los ntawm lub cov khoom zoo li lub nplhaib, yog li lub sijhawm dhau los nws hu ua ferrite magnetic nplhaib.

18. Yuav ua li cas demagnetize lub magnetic core?

Cov txheej txheem yog siv qhov hloov pauv tam sim no ntawm 60Hz rau cov tub ntxhais kom qhov pib tsav tam sim no txaus kom txaus siab rau qhov zoo thiab qhov tsis zoo, thiab tom qab ntawd maj mam txo qis kev tsav tsheb, rov ua ob peb zaug kom txog thaum nws poob rau xoom. Thiab qhov ntawd yuav ua rau nws zoo li rov qab mus rau nws qhov qub qub.
Magnetoelasticity (magnetostriction) yog dab tsi?
Tom qab cov khoom siv hlau nplaum yog magnetized, qhov kev hloov me me hauv geometry yuav tshwm sim. Qhov kev hloov pauv loj no yuav tsum yog nyob ntawm qhov kev txiav txim ntawm ob peb ntu ntawm ib lab, uas yog hu ua magnetostriction. Rau qee qhov kev siv, xws li lub tshuab hluav taws xob ultrasonic, qhov kom zoo dua ntawm cov cuab yeej no yog coj mus rau cov khoom siv deformation los ntawm kev sib nqus zoo siab magnetostriction. Hauv lwm tus, lub suab qw nrov nrov tshwm sim thaum ua haujlwm hauv cov suab nrov ntau zaus. Yog li ntawd, cov khoom siv hlau nplaum tsawg tsawg tuaj yeem siv rau hauv qhov no.

20. Dab tsi yog qhov sib nqus sib nqus?

Qhov no tshwm sim tshwm sim nyob rau hauv ferrites thiab yog yus muaj los ntawm ib tug txo nyob rau hauv permeability uas tshwm sim thaum lub core yog demagnetized. Qhov no demagnetization tuaj yeem tshwm sim thaum qhov kev khiav hauj lwm kub siab tshaj qhov Curie point kub, thiab daim ntawv thov ntawm kev hloov tam sim no los yog cov neeg kho tshuab kev co maj mam txo.

Nyob rau hauv no phenomenon, lub permeability ua ntej nce mus rau nws thawj theem thiab ces exponentially poob sai heev. Yog tias tsis muaj cov xwm txheej tshwj xeeb xav tau los ntawm daim ntawv thov, qhov kev hloov pauv hauv permeability yuav me me, vim tias ntau qhov kev hloov pauv yuav tshwm sim hauv lub hlis tom qab tsim khoom. Cov kub kub ua kom qhov kev poob qis hauv permeability. Sib nqus dissonance yog rov ua dua tom qab txhua qhov ua tiav demagnetization thiab yog li ntawd txawv ntawm kev laus.


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