Ring magnet - yog cov hlau nplaum ruaj khov thiab tsis tshua muaj. Nws muaj neodymium, boron thiab hlau. Nws yog nrov rau nws cov yam ntxwv ntawm magnetization thiab muaj zog tiv thaiv demagnetization. Raws li tej yam ntuj tso, cov hlau nplaum tshwj xeeb no poob tsis pub ntau tshaj ob feem pua ntawm lawv cov yam ntxwv (los ntawm cov hlau nplaum qub) hauv cuaj xyoo. Xws li tus nqi siab yog vim lub peev xwm ntawm cov khoom siv. Cov khoom siv ua lawv txoj haujlwm ntev heev.
Qhov tshwm sim ntawm cov khoom sib nqus
Ntau pua xyoo dhau los, cov kws tshawb fawb pom tias pob zeb muaj cov khoom tshwj xeeb. Lub nplhaib hlau nplaum yog attracted rau ntau yam khoom hlau. Thawj thawj zaug, cov ntaub ntawv no tau tshwm sim los ntawm annals. Nws kuj tau muab tawm tias cov hlau tuaj yeem tau txais cov yam ntxwv zoo li no thaum rubbed nrog cov hlau nplaum.
Cov khoom siv hlau nplaum tsuas muaj ob qho kev taw qhia: sab qaum teb thiab sab qab teb. Ntawmtxiav magnetite, nws tau pom tias txhua tus muaj nws tus kheej ncej. Niaj hnub no, lub magnetic teb tau nkag siab tias yog ib qho kev taw qhia ntawm electrons. Tab sis cov ntaub ntawv tsawg tsawg tuaj yeem cuam tshuam nrog daim teb no thiab txuag nws.
Nplhaib ruaj khov
Qhov no yog cov khoom lag luam ferrimagnetic. Nws khaws nws cov magnetization nyob rau hauv seem tom qab tag nrho cov nyhuv raug tshem tawm. Lawv yog tsim los ntawm cob alt, hlau, npib tsib xee, uas yog, los ntawm ntau yam alloys. Lawv kuj tuaj yeem tsim los ntawm cov zaub mov ntuj.
Cov peev txheej ntawm daim ntawv thov muaj ntau haiv neeg. Tab sis lawv lub hom phiaj tseem ceeb yog tias lawv ua hauj lwm los ntawm ib qho chaw sib nqus. Tab sis tsis muaj hluav taws xob thaiv. Txhua yam khoom muaj nws tus kheej magnetic teb.
Neodymium hlau nplaum
Lub nplhaib neodymium tseem muaj cov neodymium tsawg. Thiab qhov no yog cov khoom sib txawv kiag li ntawm lub peev xwm, zoo li cov hlau nplaum ferrite, uas, tej zaum, txhua tus tau tawm ntawm cov neeg hais lus ntawm daim kab xev kaw.
Ib lub hlau nplaum tiag tiag tuaj yeem daws teeb meem nyuaj. Cov nplhaib neodymium no siv ib leeg lossis ua ke nrog lwm cov ntaub ntawv.
Lub diameters ntawm lub nplhaib hlau nplaum sib npaug rau lub siab. Lawv yog siv thaum nws yog tsim nyog los ua nyob rau hauv lub ntsiab axis nrog ib tug sib nqus teb los yog yog hais tias nws yog tsim nyog los siv zog raws tag nrho cov kab. Tus nqi ntawm nws yog txo qis yog tias nws muaj lub qhov nyob hauv nws. Qhov no yuav yog ib qho tseem ceeb thaum koj yuav tsum tau xaj ib pawg loj.
Cov khoom siv zoo li no tsis yog siv hauv tsev xwb, tab sis kuj tseem tsim cov hard drive rau lub computer. Ntaulawv xav tau los tsim cov roj lim. Hauv kev lag luam automotive, cov ntaub ntawv zoo li no xav tau ntau heev. Vim tias qee cov cuab yeej siv yuav tsis ua haujlwm yam tsis muaj lawv.
Ferrite hlau nplaum
Ib lub nplhaib ferrite hlau nplaum yog ib yam khoom uas yog hlau nplaum raws ib qho axis. Nws muaj zog tiv thaiv corrosion thiab zoo demagnetized. Nws yog tsim nyob rau hauv daim ntawv ntawm ib lub nplhaib, nws tuaj yeem ua tau ntawm txhua qhov loj. Cov hlau nplaum zoo li no muaj ntau heev, vim lawv muaj tus nqi qis. Lawv feem ntau yog siv rau hauv cov cav, lub suab nrov, khoom plig.
Lawv tuaj yeem ua tiav los ntawm kev txiav pob zeb diamond. Nov yog tib txoj hauv kev kom ua tiav qhov loj me. Ferrite tuaj yeem tiv taus qhov kub ntawm +250 degrees.
Siv cov hlau nplaum
Latchers nrog cov khoom sib nqus tso cai rau koj mus:
- tsim cov khoom ua vaj tse hauv ntau qhov ntau thiab tsawg;
- install formwork;
- tsis txhob ua qhov chaw kho tom qab vuam;
- tsis lees paub kev tsis ncaj ncees hauv cov khoom siv thev naus laus zis.
Qhov no tsis tas yuav siv nyiaj ntau.
Material production method
Kev ua haujlwm ntawm cov hlau nplaum no txuas nrog cov khoom siv atomic. Cov electrodes tsim ib qho chaw sib nqus. Cov pab pawg ntawm cov atom sib txawv tuaj yeem tig mus rau tib qho kev taw qhia. Lawv qee zaum hu ua magnet domains. Yog tias cov khoom siv tsis tau hlau nplaum, ces nws cov cheeb tsam txav mus rau qhov sib txawv.
Tsim cov hlau nplaum, cov ntaub ntawv ferromagnetic yog rhuab raukub kub. Tom qab ntawd lawv raug cuam tshuam los ntawm qhov chaw sib nqus ntawm lub nplhaib hlau nplaum. Cov txheej txheem zoo li no ua rau nws muaj peev xwm ua kom cov haujlwm ntawm cov thawj coj ntawm txoj kev mus rau qhov chaw sib nqus. Lawv txav mus kom txog rau thaum tag nrho cov kev sib raug zoo kom ncav cuag qhov cuam tshuam kawg.
Tom qab ntawd, cov khoom txias txias thiab cov npe uas twb tau ua tiav raug kho raws li qhov xav tau. Thaum cov hlau nplaum sab nraud raug tshem tawm, cov ntaub ntawv yuav muaj peev xwm tuav tau ntau tus thawj. Hauv qhov no, koj yuav tau txais cov hlau nplaum ruaj khov.
Ntse
Lub ntsiab sib txawv ntawm cov hlau nplaum ruaj khov yog:
- muaj ob tug ncej;
- kev nyiam tsis zoo li ncej;
- rejection of zoo tib yam Cheebtsam;
- imperceptible kis ntawm magnetic force;
- kev ua kom muaj zog ntawm cov hlau nplaum ze ntawm tus ncej.
Cov hlau nplaum hauv lub cav
Daim ntawv thov feem ntau yog hauv DC motors. Chav tsev muaj lub tshuab hluav taws xob thiab lub tshuab hluav taws xob. Nws yog lub cev muaj zog synchronous thiab nws ua haujlwm nrog cov hlau nplaum ruaj khov. Thiab lawv, nyob rau hauv lem, nyob rau hauv lub rotor.
Lub cev muaj zog muaj qhov zoo ntawm kev tsis sib cuag. Lub ntsiab tseem ceeb yog lub rotor sensor. Yog tsis muaj cov hlau nplaum tas mus li, kev ua haujlwm ntawm lub cav yuav ua tsis tau, vim lawv tsuas yog ua kom cov haujlwm ntawm cov khoom ntawm lub cav siv lub zog ntawm kev sib raug zoo rau ib leeg.
Qhov no yog qhov zoo kawg nkaus ntawm cov khoom sib nqus. Lawv yogtsim nyog nyob rau hauv yuav luag txhua qhov ntau lawm, tsis hais txog ntawm kev tsim khoom. Yog tsis muaj lawv, nws yog qhov nyuaj rau kev xav txog kev tsim khoom ntawm qee yam khoom siv uas tsim nyog hauv kev lag luam thiab lub neej txhua hnub. Qhov tseem ceeb tshaj plaws yog tias tsis muaj dab tsi tuaj yeem hloov cov khoom sib nqus zoo li no. Qhov no ntxiv hais txog lawv qhov tsim nyog. Tam sim no, cov laj thawj rau lub zog ntawm kev nyiam ntawm cov hlau nplaum tsis tau qhia meej meej. Muaj ntau txoj kev xav nyob hauv cov xwm txheej ntawm kev xav.
Ntau cov hlau nplaum tsis yooj yim thiab tsuas yog siv los ua cov khoom siv. Lawv raug tsim los ntawm ntau hom. Lub nplhaib hlau nplaum muaj ntau cov hlau. Feem ntau lawv tau plated nrog npib tsib xee lossis titanium. Cov ntaub ntawv tseem ceeb heev tsis tsuas yog siv hauv tsev, tab sis kuj tseem nyob hauv kev tsim khoom.
