Vim li cas cov hlau nplaum sib nqus?
Cov teeb meem feem ntau yog tsim los ntawm cov molecules, uas yog tsim los ntawm atoms, thiab atoms yog tsim los ntawm nuclei thiab electrons. Nyob rau hauv ib lub atom, electrons tig tas li thiab tig ib ncig ntawm lub nucleus. Ob qho kev txav ntawm electrons tsim cov hlau nplaum. Tab sis nyob rau hauv feem ntau cov ntaub ntawv, electrons tsiv nyob rau hauv sib txawv thiab chaotic cov lus qhia, thiab cov magnetic cuam tshuam ib leeg tawm. Yog li ntawd, feem ntau cov tshuaj tsis sib nqus nyob rau hauv ib txwm muaj xwm txheej. Ferromagnetic cov ntaub ntawv xws li hlau, cobalt, npib tsib xee, los yog ferrite yog txawv. Cov electron spins nyob rau hauv lawv muaj peev xwm spontaneously teem lawv tus kheej nyob rau hauv ib tug me me ntau yam los tsim ib tug spontaneous magnetization cheeb tsam. Qhov no spontaneous magnetization cheeb tsam yog hu ua magnetic domain. Tom qab cov tshuaj ferromagnetic yog magnetized, lub sab hauv magnetic domains yog teem kom zoo thiab nyob rau hauv tib txoj kev, uas ntxiv dag zog rau cov hlau nplaum thiab tsim ib tug hlau nplaum. Cov hlau nplaum txheej txheem ntawm kev nyiam hlau yog cov txheej txheem ntawm kev sib nqus hlau thaiv. Cov hlau nplaum hlau thaiv thiab cov hlau nplaum muaj qhov sib txawv ntawm qhov sib txawv, thiab cov hlau thaiv "sticks" rau cov hlau nplaum.
Yuav txhais li cas rau kev ua tau zoo ntawm cov hlau nplaum?
Muaj cov hauv qab no 4 qhov kev ua tau zoo los txiav txim siab qhov kev ua tau zoo ntawm cov hlau nplaum:
Residual magnetism Br: Tom qab cov hlau nplaum tas li yog magnetized rau kev saturation thiab sab nraud magnetic teb raug tshem tawm, qhov seem Br yog hu ua residual magnetic induction intensity.
Coercive force Hcj: Txhawm rau txo qhov Br ntawm cov hlau nplaum tas mus li uas yog magnetized rau technical saturation mus rau xoom, qhov rov qab sib nqus hlau nplaum uas yuav tsum tau ntxiv yog hu ua magnetically induced coercive force, los yog coercive quab yuam luv luv.
Cov khoom siv hluav taws xob sib nqus BH: sawv cev rau qhov sib nqus 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 hlau nplaum zoo li qub rau ib chav tsev ntim ntawm cov pa sib txawv. Hcb, Hcj Qhov kev sib nqus rov qab siv zog yuav tsum tau txo qis Br (magnetic induction intensity) ntawm cov hlau nplaum tas mus li magnetized rau kev saturation rau xoom hu ua magnetic induction coercivity. Nyob rau hauv tib txoj kev, lub intrinsic magnetic induction intensity UoM los yog Mr yog txo mus rau xoom. Qhov yuav tsum tau rov qab sib nqus teb lub zog yog hu ua intrinsic coercive force.
Intrinsic coercive force (Hcj): Lub tsev yog Oersted (Oe) lossis A / m (A / m): lub zog rov qab sib nqus hlau nplaum yuav tsum tau txo qis qhov seem hlau nplaum Mr ntawm cov hlau nplaum rau xoom, uas peb hu ua Innate coercion. Intrinsic coercive force yog lub cev muaj nuj nqis uas ntsuas lub peev xwm ntawm cov hlau nplaum los tiv thaiv demagnetization. Nws sawv cev rau lub zog quab yuam thaum cov hlau nplaum M hauv cov khoom rov qab mus rau xoom.
Yuav faib cov khoom sib nqus li cas?
Cov khoom siv hlau nplaum tau muab faib ua ob pawg: cov khoom sib nqus ruaj khov thiab cov khoom sib nqus mos. Feem ntau, cov khoom siv nrog lub zog quab yuam ntau dua {{0}}}.8kA / m yog hu ua cov khoom sib nqus ruaj khov, thiab cov khoom siv nrog lub zog quab yuam tsawg dua 0.8kA / m yog hu ua cov khoom sib nqus mos. Kev sib piv ntawm lub zog sib nqus ntawm ob peb cov hlau nplaum uas siv ntau. Lub zog sib nqus los ntawm loj mus rau me me yog neodymium hlau boron hlau nplaum, samarium cobalt hlau nplaum, alnico hlau nplaum, thiab ferrite hlau nplaum.
Nqi-kev sib 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. Alnico: kev ua haujlwm qis thiab nruab nrab, tus nqi nruab nrab, tus yam ntxwv kub zoo heev. , Corrosion kuj, tsis zoo cuam tshuam tsis kam, samarium cobalt, ferrite, thiab neodymium hlau boron tuaj yeem tsim los ntawm sintering thiab kev sib txuas. Cov hlau nplaum sintered muaj cov khoom sib nqus siab tab sis tsis zoo molding. Cov hlau nplaum sib txuas muaj qhov zoo formability tab sis ntau ntawm kev ua tau zoo. AlNiCo tuaj yeem tsim los ntawm txoj kev casting thiab sintering. Cam khwb cia hlau nplaum muaj kev ua tau zoo dua tab sis tsis zoo formability, thaum sintered hlau nplaum muaj qisr kev ua tau zoo thiab zoo formability.
Cov yam ntxwv ntawm NdFeB hlau nplaum
NdFeB cov khoom siv hlau nplaum ruaj khov yog cov khoom siv hlau nplaum ruaj khov raws li intermetallic compound Nd2Fe14B. NdFeB muaj cov khoom siv hluav taws xob sib nqus zoo heev thiab lub zog quab yuam, thiab qhov zoo ntawm lub zog siab 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, yog li ua cov cuab yeej siv hluav taws xob, hluav taws xob hluav taws xob, thiab sib nqus sib nqus Nws tuaj yeem ua cov khoom siv xws li magnetization me dua, sib dua, thiab thinner. Cov yam ntxwv ntawm cov khoom siv: Qhov zoo ntawm NdFeB yog cov nqi siab thiab cov khoom siv kho tshuab zoo; Nws qhov tsis zoo yog qhov ntsuas kub qis Curie, cov yam ntxwv kub tsis zoo, thiab yooj yim ntawm pulverizing thiab corroding. Nws yuav tsum tau ua los ntawm kev kho nws cov tshuaj muaj pes tsawg leeg thiab siv txoj kev kho saum npoo. Tsuas yog los ntawm kev txhim kho nws tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm kev siv tswv yim. Cov txheej txheem tsim khoom: NdFeB yog tsim los siv cov txheej txheem hmoov metallurgy. Cov txheej txheem ntws: cov khoom xyaw → smelting thiab ingot ua → hmoov ua → nias → sintering thiab tempering → sib nqus nrhiav → sib tsoo ua → pin txiav → electroplating → khoom tiav.
Ferrite hlau nplaum:
Nta: Nws cov ntaub ntawv tseem ceeb suav nrog BaFe12O19 thiab SrFe12O19. Ua los ntawm cov thev naus laus zis ceramic, qhov kev ntxhib los mos yog qhov nyuaj thiab nkig. Vim tias cov hlau nplaum ferrite muaj qhov kub thiab txias tsis kam, tus nqi qis, thiab kev ua haujlwm nruab nrab, lawv tau dhau los ua cov hlau nplaum uas siv tau zoo tshaj plaws. Cov yam ntxwv: Nws muaj cov khoom sib nqus zoo, lub sijhawm ruaj khov, thiab qis-kub coefficient. Ferrite magnet daim ntawv thov thaj chaw: dav siv nyob rau hauv hluav taws xob ntsuas, twj, motors, tsis siv neeg tswj, microwave li, radar thiab cov khoom kho mob, thiab lwm yam Ferrite hlau nplaum magnetizing kev taw qhia: axial, radial, los yog raws li xav tau. Ferrite hlau nplaum daim duab: cylindrical, ncig, duab plaub, tiaj tus, pobzeb-puab, thiab axe-puab tuaj yeem tsim.
Dab tsi yog ib hom hlau nplaum?
Cov hlau nplaum muaj ob tug ncej, tab sis nyob rau hauv qee qhov chaw ua haujlwm, ib leeg-ncej hlau nplaum yuav tsum tau, yog li ib sab ntawm cov hlau nplaum yuav tsum tau qhwv nrog ib daim hlau kom cov hlau nplaum ntawm sab uas npog los ntawm cov ntawv hlau yog thaiv thiab cov hlau nplaum ntawm lwm sab yog refracted los ntawm cov hlau ntawv. Cov hlau nplaum txhim khu lub zog sib nqus ntawm cov hlau nplaum ntawm sab nraud. Xws li cov hlau nplaum sib sau ua ke hu ua cov hlau nplaum ib leeg lossis ib sab hlau nplaum. Tsis muaj ib qho tseeb ib-sab hlau nplaum. Cov ntaub ntawv siv rau cov hlau nplaum ib leeg yog feem ntau arc-zoo li cov ntawv hlau thiab cov hlau nplaum muaj zog NdFeB. Cov duab ntawm NdFeB cov hlau nplaum muaj zog siv rau cov hlau nplaum ib leeg yog feem ntau disk duab.
Dab tsi yog kev siv cov hlau nplaum ib leeg?
(1) Nws yog dav siv hauv kev lag luam luam ntawv. Cov hlau nplaum ib leeg muaj nyob rau hauv lub thawv ntim khoom plig, lub thawv ntim xov tooj ntawm tes, lub thawv ntim cov luam yeeb thiab cawv, lub thawv ntim xov tooj ntawm tes, MP3 ntim lub thawv, lub thawv ntim ncuav mog qab zib hli, thiab lwm yam khoom.
(2) Nws yog dav siv hauv kev lag luam tawv khoom. Cov hlau nplaum ib leeg muaj nyob rau hauv hnab, hnab ris, hnab mus ncig, hnab xov tooj, hnab nyiaj, thiab lwm yam khoom tawv.
(3) Nws yog dav siv hauv kev lag luam sau ntawv. Cov hlau nplaum ib leeg muaj nyob rau hauv phau ntawv, whiteboard buckles, folders, magnetic nameplates, thiab lwm yam.
Dab tsi yuav tsum tau ceev faj thaum thauj cov hlau nplaum?
Ua tib zoo saib xyuas cov av noo hauv tsev, uas yuav tsum tau khaws cia ntawm qhov qhuav. Qhov kub thiab txias yuav tsum tsis pub tshaj chav tsev; dub thaiv los yog cov khoom dawb paug tuaj yeem muab roj zoo thaum khaws cia (cov roj cav dav dav txaus); cov khoom siv electroplated yuav tsum yog lub tshuab nqus tsev kaw lossis khaws cia rau hauv kev sib cais los ntawm huab cua kom ntseeg tau qhov kev tiv thaiv corrosion ntawm txheej; Cov khoom siv hlau nplaum yuav tsum tau nyiam Cia lawv ua ke thiab hauv cov thawv kom tsis txhob nyiam lwm yam khoom siv hlau; Cov khoom siv hlau nplaum yuav tsum muab khaws cia kom deb ntawm cov disks, daim npav sib nqus, daim kab xev, lub khoos phis tawj saib, saib thiab lwm yam khoom uas nkag siab zoo rau thaj chaw sib nqus. Cov hlau nplaum nyob rau hauv lub xeev magnetized yuav tsum tau shielded thaum thauj, tshwj xeeb tshaj yog thaum thauj los ntawm huab cua, lawv yuav tsum tau shielded tag nrho.
Yuav ua li cas kom tau txais kev sib nqus sib nqus?
Tsuas yog cov ntaub ntawv uas tuaj yeem adsorbed rau cov hlau nplaum tuaj yeem thaiv cov hlau nplaum, thiab cov khoom tuab dua, qhov zoo dua qhov kev sib nqus sib nqus. Cov khoom tseem ceeb ntawm Xiangci Magnets suav nrog sintered ferrite hlau nplaum (isotropic, anisotropic, thiab polar anisotropy), txhaj tshuaj molded hlau nplaum (encoder magnetic rings, txhaj molded integrated rotor Cheebtsam, Hall magnetic rings), nrog zoo sib xws, thiab muaj zog stability.
Yam khoom ferrite twg tuaj yeem ua hluav taws xob?
Mos magnetic khoom ferrite yog cov khoom siv hlau nplaum permeable nrog siab sib nqus permeability thiab siab tiv taus. Nws yog feem ntau siv nyob rau hauv high zaus thiab feem ntau yog siv nyob rau hauv kev sib txuas lus hluav taws xob. Cov khoos phis tawj thiab TV uas peb tau ntsib nrog txhua hnub muaj cov ntawv thov hauv lawv. Mos ferrites feem ntau suav nrog manganese-zinc thiab nickel-zinc. Qhov sib nqus permeability ntawm manganese-zinc ferrite yog ntau dua li ntawm nickel-zinc ferrite.
Curie kub ntawm cov hlau nplaum ruaj khov ferrite yog dab tsi?
Nws tau tshaj tawm tias Curie kub ntawm ferrite yog nyob ib ncig ntawm 450 degree, feem ntau ntau dua los yog sib npaug rau 450 degree. Hardness nyob ib ncig ntawm 480-580. Curie kub ntawm NdFeB hlau nplaum yog qhov pib ntawm 350-370 degree . Txawm li cas los xij, kev ua haujlwm kub ntawm NdFeB hlau nplaum tsis tuaj yeem ncav cuag Curie kub. Thaum qhov kub siab tshaj 180-200 degree, cov khoom sib nqus tau zoo heev attenuated, cov hlau nplaum poob kuj loj heev, thiab cov nqi siv tau poob lawm. Curie point tseem hu ua Curie kub (Tc) los yog sib nqus hloov chaw. Nws yog hais txog qhov kub thiab txias ntawm qhov uas cov hlau nplaum sib nqus hauv cov khoom sib nqus poob mus rau xoom thiab yog qhov tseem ceeb ntawm cov tshuaj ferromagnetic los yog ferrimagnetic hloov mus rau cov tshuaj paramagnetic. Hauv qab Curie point kub, cov khoom yuav dhau los ua ferromagnet, thiab cov hlau nplaum sib nqus cuam tshuam nrog cov khoom yog qhov nyuaj rau hloov. Thaum qhov kub siab tshaj qhov Curie point, cov khoom yuav dhau los ua ib qho paramagnet, thiab cov hlau nplaum ntawm cov hlau nplaum hloov tau yooj yim nrog cov kev hloov pauv ntawm cov hlau nplaum ib puag ncig. Qhov sib nqus rhiab heev ntawm lub sijhawm no yog kwv yees li 10 rau lub zog ntawm qhov tsis zoo 6. Lub Curie point yog txiav txim siab los ntawm cov tshuaj muaj pes tsawg leeg thiab cov qauv siv lead ua ntawm cov khoom.
Dab tsi yog qhov feem ntau ua tau zoo ntawm cov hlau nplaum cores?
Sib nqus cores, tshwj xeeb tshaj yog cov ntaub ntawv ferrite, muaj ntau yam geometries thiab ntau thiab tsawg. Yuav kom ua tau raws li qhov yuav tsum tau ua ntawm ntau yam qauv tsim, qhov loj ntawm cov tub ntxhais hlau nplaum kuj raug xam kom haum raws li qhov yuav tsum tau ua kom zoo. Cov kev sib nqus cov tub ntxhais uas twb muaj lawm no muaj xws li lub cev tsis zoo xws li kev sib nqus, thaj chaw zoo, ntim tau zoo, thiab lwm yam.
Vim li cas lub kaum lub vojvoog tseem ceeb rau winding?
Yog vim li cas vim li cas lub kaum sab xis ntawm lub kaum sab xis yog qhov tseem ceeb yog tias cov ntug ntawm cov tub ntxhais ntse heev, nws muaj peev xwm nick lub rwb thaiv tsev ntawm cov hlau thaum lub sij hawm raug thiab nruj winding txheej txheem. Ua tib zoo saib xyuas kom ntseeg tau tias cov npoo ntawm cov hlau nplaum yog sib npaug. Ferrite core ntau lawm pwm muaj qee yam qauv roundness vojvoog, thiab cov cores no yog hauv av thiab deburred kom txo tau qhov ntse ntawm lawv cov npoo. Tsis tas li ntawd, cov hlau nplaum feem ntau yog pleev xim los yog npog kom tsis yog tsuas yog blunt lawv cov ces kaum, tab sis kuj ua rau lawv qhov chaw winding du. Powder cores muaj ib lub voj voog nrog lub vojvoog siab ntawm ib sab thiab cov txheej txheem deburring ntawm lwm sab. Rau cov ntaub ntawv ferrite, ib qho ntug npog yog ntxiv.
Hom hlau nplaum twg yog qhov tsim nyog rau kev ua lub tshuab hluav taws xob?
Cov tub ntxhais hlau nplaum uas ua tau raws li qhov xav tau ntawm lub transformer yuav tsum muaj qhov sib nqus induction siab ntawm ib sab, thiab ua kom nws qhov kub thiab txias tsis pub dhau ib qho kev txwv ntawm qhov tod tes. Rau inductors, cov tub ntxhais sib nqus yuav tsum muaj qhov sib txawv ntawm huab cua los xyuas kom meej tias nws muaj qee qhov sib nqus permeability nyob rau hauv siab DC lossis AC tsav tsheb. Ob qho tib si ferrite thiab daim kab xev cores tuaj yeem kho nrog huab cua qhov khoob, thiab cov hmoov cores muaj nws tus kheej Los nrog huab cua sib txawv.
Dab tsi ntawm magnetic core yog qhov zoo tshaj?
Nws yuav tsum tau hais tias tsis muaj lus teb rau lo lus nug no vim tias kev xaiv cov tub ntxhais hlau nplaum yog txiav txim siab raws li qhov xwm txheej ntawm daim ntawv thov thiab kev siv zaus. Kev xaiv cov khoom siv kuj muaj kev lag luam thiab lwm yam los xav txog. Piv txwv li, qee cov ntaub ntawv tuaj yeem lav qhov kub thiab txias. Me me, tab sis kim. Nyob rau hauv txoj kev no, thaum xaiv cov ntaub ntawv rau qhov kub thiab txias, nws muaj peev xwm xaiv cov ntaub ntawv loj dua tab sis cov nqi qis dua kom ua tiav cov haujlwm no. Yog li ntawd, cov khoom siv zoo tshaj plaws Kev xaiv yuav tsum ua ntej raws li kev thov ntawm koj inductor lossis transformer. Los ntawm qhov kev pom no, nws cov zaus ua haujlwm thiab tus nqi yog qhov tseem ceeb. Qhov kev xaiv zoo tshaj plaws ntawm cov khoom sib txawv yog txiav txim siab raws li kev hloov zaus, temperature nce, thiab magnetic flux ceev.
Dab tsi yog lub nplhaib tiv thaiv kev cuam tshuam sib nqus?
Anti-interference magnetic nplhaib tseem hu ua ferrite magnetic nplhaib. Lub hauv paus chiv keeb ntawm lub npe anti-interference magnetic nplhaib yog tias nws tuaj yeem ua lub luag haujlwm tiv thaiv kev cuam tshuam. Piv txwv li, cov khoom siv hluav taws xob raug cuam tshuam los ntawm cov teeb meem sab nraud tsis zoo thiab cuam tshuam cov khoom siv hluav taws xob, ua rau cov khoom siv hluav taws xob tau txais kev cuam tshuam los ntawm cov teeb meem sab nraud thiab tsis ua haujlwm li qub. Lub nplhaib tiv thaiv kev cuam tshuam sib nqus, Tsuas yog kom muaj qhov ua haujlwm no, tsuav yog cov khoom tau nruab nrog lub nplhaib tiv thaiv kev cuam tshuam, nws tuaj yeem tiv thaiv cov teeb meem sab nraud los ntawm kev nkag mus rau hauv cov khoom siv hluav taws xob, ua kom cov khoom siv hluav taws xob ua haujlwm zoo li qub, thiab ua si. anti-interference nyhuv, yog li nws yog hu ua anti-interference magnetic nplhaib. Anti-interference magnetic nplhaib tseem hu ua ferrite magnetic nplhaib, vim hais tias ferrite magnetic nplhaib yog tsim los ntawm ferrite cov ntaub ntawv xws li hlau oxide, npib tsib xee oxide, zinc oxide, tooj liab oxide, thiab lwm yam, vim hais tias cov ntaub ntawv no muaj ferrite Composition, thiab cov khoom. yog ua los ntawm cov khoom siv ferrite zoo li lub nplhaib, yog li nws yog hu ua ferrite magnetic nplhaib dhau sijhawm.
Yuav ua li cas demagnetize lub magnetic core?
Tus txheej txheem yog siv 60Hz alternating tam sim no rau lub magnetic core kom nws thawj tsav tam sim no txaus kom saturate ob qhov zoo thiab tsis zoo xaus, thiab ces maj mam thiab maj mam txo tus tsav theem, rov ua ob peb zaug kom txog rau thaum nws poob rau 0. Qhov no yuav rov qab nws qhov chaw khaws cia rau nws qhov qub thawj lub xeev.
Dab tsi yog magnetoelasticity (magnetostriction)?
Tom qab cov khoom sib nqus yog magnetized, me me geometric hloov yuav tshwm sim. Qhov loj ntawm qhov kev hloov pauv no yuav tsum yog nyob ntawm qhov kev txiav txim ntawm ob peb ntu ntawm ib lab, uas yog hu ua magnetostriction. Qee daim ntawv thov, xws li cov tshuab hluav taws xob ultrasonic, coj kom zoo dua ntawm cov cuab yeej no kom tau txais cov tshuab deformation los ntawm kev sib nqus zoo siab magnetostriction. Hauv qee qhov kev thov, thaum ua haujlwm hauv qhov ntau zaus audible, lub suab nrov yuav tshwm sim. Yog li ntawd, cov khoom siv hlau nplaum tsawg tsawg tuaj yeem siv rau hauv qhov no.
Magnetic mismatch yog dab tsi?
Qhov no tshwm sim tshwm sim nyob rau hauv ferrite thiab manifests nws tus kheej raws li ib tug txo nyob rau hauv magnetic permeability thaum lub core yog demagnetized. Qhov no demagnetization tuaj yeem tshwm sim tom qab qhov kev khiav hauj lwm kub siab tshaj qhov Curie point kub, daim ntawv thov ntawm maj mam txo amplitude ntawm alternating tam sim no los yog txhua yam kev co, thiab lwm yam. Nyob rau hauv no phenomenon, lub magnetic permeability ua ntej nce mus rau nws thawj theem thiab ces txo exponentially thiab sai. Yog tias tsis muaj qhov tshwj xeeb xav tau rau daim ntawv thov, ces qhov kev hloov pauv hauv permeability yuav me me, vim tias muaj ntau yam kev hloov pauv tuaj yeem tshwm sim hauv ob peb lub hlis ntawm kev tsim. Cov kub kub ceev no txo qhov sib nqus permeability. Sib nqus dissonance yuav rov tshwm sim tom qab txhua qhov ua tiav demagnetization thiab yog li ntawd txawv ntawm kev laus.
Cov hlau nplaum zoo li cas tuaj yeem siv hauv dej?
Nyob ntawm cov khoom siv, tsis yog txhua lub hlau nplaum tuaj yeem siv hauv dej. Cov hlau nplaum corroded thiab xeb tuaj yeem ua rau muaj kev phom sij rau cov dej hauv dej. Ferrite muaj zog corrosion kuj thiab oxidation tsis kam thiab tuaj yeem siv tau hauv dej.
Magnetic vuas yog dab tsi?
Cov pobzeb sib nqus yog ib hom pobzeb zoo li cov hlau nplaum ntawm cov hlau nplaum ruaj khov, uas yog siv rau hauv cov hlau nplaum ruaj khov.
Dab tsi yog cov txheej txheem ntau lawm ntawm ferrite magnet vuas?
Ferrite hlau nplaum feem ntau yog ua los ntawm sintered ferrite. Cov txheej txheem ntau lawm ntawm sintered ferrite hlau nplaum vuas yog muab faib ua ntub-nias anisotropic, qhuav-nias isotropic, thiab qhuav-nias anisotropy. Qhov sib txawv ntawm anisotropic thiab isotropic yog seb puas muaj kev taw qhia sib nqus teb thaum cov xovxwm tsim. Ntawm no peb tsuas yog qhia cov txheej txheem ntawm ntub nias ntawm kev sib deev sib deev. Cov txheej txheem ntub dej ntws yog: raw cov ntaub ntawv → pre-calcination → ntxhib sib tsoo (thawj pob milling) → batching → thib ob pob milling (ntub sib tsoo) → sib nqus teb → sintering → sib tsoo → tu → magnetization. Vim tias cov molding slurry muaj cov dej noo, cov molded hais tau yooj yim tig rau hauv magnetic teb, yog li lawv tuaj yeem tau txais kev taw qhia siab dua li kev nias qhuav, thiab lawv cov kev ua tau zoo dua.
NdFeB sib nqus pobzeb tsim cov txheej txheem ntws
Sintered NdFeB sib nqus vuas: cov khoom xyaw → smelting → crushing → hmoov ua → magnetic teb molding → isostatic nias → nqus sintering thiab tempering → xaim txiav thiab lwm yam ua → electroplating → magnetization.
Qhov kev xaiv ntawm workpiece tu txoj kev yog dab tsi?
Txoj kev uas lub workpiece muab tso rau hauv lub tank tu muaj kev sib raug zoo nrog kev tu kom zoo. Nws qhov kev tso kawm kuj muaj feem xyuam rau qhov loj, zoo li, thiab cov qauv ntawm lub workpiece. Feem ntau hais lus, overlapping stacks ntawm workpieces los yog ntau pawg nyob rau hauv ib lub sij hawm yuav cuam tshuam cov nyhuv tu. Txawm hais tias NdFeB cov khoom sib nqus muaj cov duab sib txawv, lawv feem ntau yog qhov me me. Koj tuaj yeem muab tso rau ntawm ib lub nylon net thiab co nws hauv lub tank ntxuav kom huv. Qhov no yuav pab kom cov av nyob rau saum npoo ntawm lub workpiece poob, thiab nws tseem yuav pab rhuav tshem cov dej zaj duab xis ntawm lub workpiece nrog qhov muag tsis pom qhov, ua rau cov nyhuv cavitation yooj yim tshwm sim hauv qhov dig muag qhov. Lwm txoj hauv kev los tso cov khoom ua haujlwm yog ncaj qha flatten lub workpiece ntawm lub phaj hauv qab ntawm lub tank tu (uas yog, ultrasonic transducer radiating phaj) kom lub workpiece tuaj yeem tiv taus qhov muaj zog ultrasonic. Cov kev xyaum tau ua pov thawj tias txoj kev no ncaj qha tso lub workpiece rau hauv qab phaj rau kev tu kom huv si zoo tshaj plaws thiab kev ua haujlwm siab tshaj plaws.
Dab tsi yuav tsum tau ceev faj thaum thauj cov hlau nplaum?
Ua tib zoo saib xyuas cov av noo hauv tsev, uas yuav tsum tau khaws cia ntawm qhov qhuav. Qhov kub thiab txias yuav tsum tsis pub tshaj chav tsev; dub thaiv los yog cov khoom dawb paug tuaj yeem muab roj zoo thaum khaws cia (cov roj cav dav dav txaus); cov khoom siv electroplated yuav tsum yog lub tshuab nqus tsev kaw lossis khaws cia rau hauv kev sib cais los ntawm huab cua kom ntseeg tau qhov kev tiv thaiv corrosion ntawm txheej; Cov khoom siv hlau nplaum yuav tsum tau nyiam Cia lawv ua ke thiab hauv cov thawv kom tsis txhob nyiam lwm yam khoom siv hlau; Cov khoom siv hlau nplaum yuav tsum muab khaws cia kom deb ntawm cov disks, daim npav sib nqus, daim kab xev, lub khoos phis tawj saib, saib thiab lwm yam khoom uas nkag siab zoo rau thaj chaw sib nqus. Cov hlau nplaum nyob rau hauv lub xeev magnetized yuav tsum tau shielded thaum thauj, tshwj xeeb tshaj yog thaum thauj los ntawm huab cua, lawv yuav tsum tau shielded tag nrho.
Lub zog hlau nplaum yog dab tsi?
Cov hlau nplaum muaj zog xa mus rau neodymium hlau boron hlau nplaum. Nws cov khoom sib nqus zoo heev tshaj ferrite hlau nplaum, alnico, thiab samarium cobalt. NdFeB hlau nplaum tuaj yeem nqus tau 640 npaug ntawm lawv qhov hnyav, yog li NdFeB hlau nplaum feem ntau hu ua cov hlau nplaum muaj zog los ntawm cov neeg sab nrauv.
Yuav ua li cas demagnetize lub hlau nplaum muaj zog?
Ib txoj hauv kev rau demagnetization tuaj yeem tsim tau raws li kev siv sib txawv ntawm cov hlau nplaum muaj zog.
1) High-temperature demagnetization method: Lub luag haujlwm tseem ceeb ntawm txoj kev kub kub demagnetization yog muab cov hlau nplaum tso rau hauv lub qhov cub kub kom sov. Tom qab kev kho kub kub, cov hlau nplaum ntawm cov hlau nplaum muaj zog yuav raug tshem tawm. Txawm li cas los xij, thaum lub sij hawm cua sov, cov nyhuv ntawm qhov kub thiab txias yuav ncaj qha ua rau cov qauv ntawm cov khoom hauv cov hlau nplaum mus rau qhov kev hloov pauv loj heev, yog li no txoj kev demagnetization feem ntau yog siv rau cov khoom siv hlau nplaum thiab rov ua dua tshiab.
2) Vibration demagnetization method: Txoj kev no yooj yim heev rau kev khiav lag luam. Nws vibrates ib lub hlau nplaum uas muaj zog heev thiab ua nruj ua tsiv. Tom qab kev vibration ua haujlwm, cov qauv sab hauv ntawm cov hlau nplaum hloov pauv, yog li hloov lub cev lub zog ntawm cov hlau nplaum. Feem ntau hais lus, Cov txiaj ntsig ntawm txoj kev demagnetization no tsis zoo, thiab tsuas yog ib qho me me ntawm demagnetization tuaj yeem siv tau ib ntus.
3) Magnet AC demagnetization method: Txoj kev demagnetization no yog muab cov hlau nplaum tso rau hauv qhov chaw uas tuaj yeem tsim AC magnetic teb. Tom qab kev cuam tshuam ntawm AC magnetic teb, cov qauv sab hauv ntawm cov hlau nplaum yuav cuam tshuam, yog li ua tiav cov nyhuv demagnetization. Txoj kev no yog ib txoj kev demagnetization feem ntau.
Cov txheej txheem saum toj no yog tag nrho cov txiaj ntsig zoo rau demagnetizing cov hlau nplaum muaj zog, tab sis nyob rau lub sijhawm ib txwm peb tseem nyiam AC demagnetization txoj kev. Nws muaj cov nyhuv demagnetization zoo dua li qhov kub-kub demagnetization txoj kev thiab kev co demagnetization txoj kev thiab kuj ua tau zoo heev. Tam sim no nws yog txoj kev siv ntau tshaj plaws hauv kev tsim khoom. txoj kev.
Yuav ua li cas los xyuas cov txheej txheem zoo? Qhov zoo ntawm cov txheej txheem ncaj qha cuam tshuam rau lub neej kev pab cuam ntawm NdFeB. Cov txheej txheem tseem ceeb rau kev ntsuas qhov zoo ntawm NdFeB txheej yog:
1) Kev tshuaj xyuas qhov pom ntawm qhov pom Cov tsos mob tsuas yog pom nrog lub qhov muag liab qab, nyiam dua nyob rau hauv lub teeb ntuj (hnub ci, hnub ci tsis ncaj), lossis hauv qab lub teeb fluorescent nrog lub teeb pom kev sib npaug rau 40W. Yuav tsum tsis muaj blistering, tev, ib nrab plating, xim tsis sib xws, stains, dej stains, thiab lwm yam.
2), txheej thickness ntsuas
3). Drop test (tsuas yog rau cov khoom siv galvanized)
4) Cross-hatch test (feem ntau yog siv rau cov khoom siv nickel-plated)
5) Kev ntsuas kub thiab txias
6), PCT kev ntsuas siab
7), SST ntsev tsuag tshuaj ntsuam
8), qhov ntsuas kub thiab av noo, thiab lwm yam.