Cov kws tshawb fawb tau ntev sim los tsim cov hlau nplaum muaj zog raws li ntau yam alloys. Tab sis nyob rau hauv feem ntau txoj kev loj hlob, nws yog tsim nyog los siv cov ntaub ntawv uas yuav ua tau txaus ntshai rau tib neeg. Thaum kawg tau tswj kom tau ib qho kev muaj pes tsawg leeg raws li neodymium. Cov hlau tsis tshua muaj hauv ntiaj teb no tsis ua rau muaj kev phom sij rau kev noj qab haus huv. Tau paub txog cov khoom tshwj xeeb ntawm cov khoom zoo li no, ntau tus xav paub seb puas muaj peev xwm ua cov hlau nplaum neodymium nrog lawv tus kheej txhais tes. Raws li lub tswv yim, qhov no yog txheej txheem thev naus laus zis. Los yog nws tuaj yeem ua los ntawm cov khoom siv rov ua dua?
Neodymium hlau nplaum: dab tsi yog cov khoom no?
Raws li cov kws tshawb fawb, qhov kev txhim kho no siv sijhawm li 20 xyoo ntawm kev tshawb fawb thiab kev sim. Thaum xaiv cov ntaub ntawv, ntau yam tau muab rau hauv tus account: muaj, manufacturability, kev nyab xeeb, siab sib nqus zog, tsis kam mus rau tej yam kev mob. Cov kws tshawb fawb tau txiav txim siab siv cov hlau tsis tshua muaj hauv ntiaj teb ua ib qho kev cog lus. Thiab neodymium tsuas yog zoo meej rau cov hom phiaj no.
Magnets raws li nws muaj lub zog nplaum zoo heev. Txawm tias me me ntawm cov khoom tso cai rau koj khaws qhov hnyavntau zaus nws qhov hnyav. Cov khoom sib nqus tau khaws cia rau lub sijhawm ntev (poob tsis tshaj 2% dhau 10 xyoo ntawm kev siv). Tam sim no cov hlau nplaum neodymium tuaj yeem yuav hauv khw tshwj xeeb. Lawv cov nqi muaj nyob rau yuav luag txhua tus.
Composition
Cov hlau nplaum raws li cov hlau tsis tshua muaj hauv ntiaj teb no yog qhia los ntawm cov mis Nd2Fe14B. Cov tshuaj muaj xws li neodymium (Nd), hlau (Fe), boron (B). Lub peculiarity ntawm cov cuab yeej nyob rau hauv lub fact tias lub ntiaj teb no tsis tshua muaj hlau nyob rau hauv nws cov ntshiab daim ntawv yog nyuaj rau cais. Cov txheej txheem sintering nrog cov khoom seem hauv cov hmoov yuav tsum muaj nyob rau hauv ib qho chaw inert. Txwv tsis pub, nws sai oxidizes nrog poob ntawm cov khoom.
Technology rau cov xwm txheej ib txwm yog qhov nyuaj, yog li sim ua cov hlau nplaum neodymium nrog koj tus kheej tes yog qhov ua tsis tau. Cov khoom raug cim thaum tsim khoom. Tus lej tom qab tsab ntawv N (25, 30, 45) qhia tus lej. Qhov siab dua qhov ntsuas, qhov muaj zog ntawm cov khoom sib nqus ntawm cov khoom. Qhov siab tshaj plaws ua haujlwm kub ntawm cov hlau nplaum kuj nyob ntawm tus lej.
Ntse
Txhawm rau tiv thaiv kom tsis txhob cuam tshuam rau ib puag ncig, cov hlau nplaum yog coated nrog cov khoom tiv thaiv. Feem ntau cov no yog ob txheej ntawm npib tsib xee lossis ib qho kev txhim kho nrog ib txheej ntawm tooj liab ntxiv nyob nruab nrab. Lwm qhov tseem ceeb yog cov hlau nplaum neodymium pib demagnetize ntawm qhov kub siab tshaj 70 ° C. Tshaj qhov txwv tuaj yeem ua rau poob tag nrho cov khoom thiab kev hloov pauv ntawm cov hlau rau hauv ib daim hlau xwb.
Qhov tshwj xeeb ntawm cov khoom siv qhia txog kev ntsuas kev nyab xeeb tshwj xeeb thaum ua haujlwm. Yog li, neodymium hlau nplaum 50x30 mm muaj lub zog nplaum ntawm 100 - 115 kg, thiab 70x50 mm txog 300 kg. Yog tias ua tib zoo saib xyuas, lawv tuaj yeem ua rau muaj kev phom sij: hnia cov ntiv tes, ua rau daim tawv nqaij, ua rau cov pob txha puas. Yog tias ob lub hlau nplaum sib tsoo uncontrollably, cov khoom yuav tawg thiab tsim cov khoom ntse uas tuaj yeem ua rau lub qhov muag raug mob.
Daim ntawv thov
Kev lig kev cai lawv tau siv hauv cov khoom siv hluav taws xob thiab cov khoom siv uas tsim nyog los tsim ib qho chaw sib nqus tas li. Cov khoom ntawm cov khoom ua rau nws muaj peev xwm ua tau zoo siv lawv thaum tshawb nrhiav thiab nqa cov khoom siv hlau los ntawm hauv qab ntawm cov reservoirs. Cov qauv zoo li no, ntxiv rau lub qhov muag rau kev txuas lub cable, tau nruab nrog lub qhov muag ntsia hlau, uas yog qhov tsim nyog, txij li thaum ntsia hlau ntsia, nws tso cai rau koj tshem tawm ob qhov chaw sib cuam tshuam.
Cov hlau nplaum muaj nyob rau hauv qhov ntau thiab tsawg los ntawm 1 txog 120 hli hauv txoj kab uas hla thiab hauv cov tuab thiab cov duab sib txawv. Cov thinnest ntawm lawv yog dav siv nyob rau hauv cov khoom tawv thiab rooj tog kev lag luam. Lawv tuaj yeem pom hauv cov khoom ua si lom zem thiab cov khoom siv rau dai ntau yam khoom siv. Cov hlau nplaum muaj zog yog qhov tseem ceeb rau kev lim cov ntaub ntawv xoob thiab kua. Lawv siv los ntes cov hlau impurities thiab cov khoom txawv teb chaws hauv cov kwj deg.
Lub zog traction siab txhawb kom tib neeg siv lawv "txuag" dej thiab roj ib yam nkaus. Los ntawm kev yuav cov hlau nplaum neodymium rau cov meters, lawv yog li sim nres lossis qeeb ntawm kev sib hloov ntawm lawv cov txheej txheem. Qhov no tau yog theoretically muaj nyob rau hauv cov khoom sivqhov twg steel ntsiab yog siv nyob rau hauv. Cov hlau nplaum muaj zog uas muab tso rau hauv ib qho chaw ntawm lub casing tuaj yeem ua rau qeeb ntawm kev sib hloov ntawm lub impeller.
Kuv puas tuaj yeem tsim kuv tus kheej neodymium hlau nplaum?
Kev lag luam thev naus laus zis, ntxiv rau sintering cov huab hwm coj mus rau hauv cov hlau, kuj tseem cuam tshuam nrog kev nyuaj thiab nkag tsis tau rau hauv tsev txheej txheem ntawm magnetization ntawm cov khoom tshwm sim. Rau qhov no, lub zog muaj zog heev yog siv. Yog tias muaj lub siab xav kom tau cov hlau nplaum neodymium koj tus kheej, koj tuaj yeem ua koj tus kheej los ntawm disassembling lub "tso tseg" electronics.
Nyob hauv qee qhov qub hard drive koj tuaj yeem pom ib lossis ob lub ntsiab me me hauv. Sim xyaum los yog tsoo cov hlau nplaum zoo li no ua tsis tau. Cov txheej txheej tiv thaiv nto yog puas, cov khoom siv reacts nrog nruab nrab thiab poob nws cov khoom. Tsis tas li ntawd, raws li cov kws tshaj lij, cov chips yog cov nplaim hluav taws kub heev thiab tuaj yeem ua rau thaj chaw ib puag ncig.
