SinteredNdFeB cov hlau nplaum ruaj khovyog tsim los siv cov hmoov metallurgy txoj kev. Los ntawm kev npaj cov khoom mus rau kev xa khoom tiav, feem ntau muaj ntau tshaj li kaum lub txheej txheem txheej txheem, suav nrog ntau qhov kev tshuaj xyuas thiab tshuaj xyuas ntawm ntau theem.
Tag nrho cov txheej txheem tsim khoom yog ib txoj haujlwm ua haujlwm, sib cuam tshuam nrog ib leeg. Feem ntau, peb hu rau cov txheej txheem ntawm kev tsim cov hlau nplaum blanks rau pem hauv ntej-kawg cov khoom txuas, thiab cov txheej txheem ntawm kev ua cov blanks rau hauv cov khoom kawg yog hu ua back-end processing link. Cov tuam txhab tsim khoom siv hlau nplaum feem ntau muab faib ua ob pawg, ib qho yog cov chaw tsim khoom uas muaj ob qho tib si pem hauv ntej-kawg thiab rov qab ua tiav, thiab lwm qhov yog cov chaw tsim khoom lag luam uas tsom rau kev ua haujlwm tom qab.
1. Npaj cov ntaub ntawv
Thaum cov neeg tsim khoom xaiv cov khoom siv raw, lawv feem ntau yuav lawv raws li qhov xav tau ntawm cov hlau nplaum ua haujlwm thiab cov qauv hauv lub tebchaws. Ua ntej smelting, raw cov ntaub ntawv yog txiav thiab nto-kho.
2. Smelting
Smelting yog thawj txheej txheem rau sintered NdFeB mus tas li hlau nplaum nkag mus rau cov txheej txheem ntau lawm. Cov ntaub ntawv raw yog kub-melted nyob rau hauv lub qhov cub smelting thiab txias rau daim hlau strips. Cov txheej txheem no yuav tsum tau lub qhov cub kub kom txog li 1,300 degrees thiab kav ntev tshaj li plaub teev kom tiav.
3. Hydrogen Breaking + 4. Dav Hlau
Ob txheej txheej txheej txheem ntawm hydrogen crushing thiab dav hlau milling yog sib sau ua ke hu ua hmoov ua, uas yog cov txheej txheem ntawm crushing cov smelted alloy siv strips thiab ua magnetic hmoov. Txhawm rau kom tau txais cov hlau nplaum zoo, cov hmoov hmoov yuav tsum muaj qhov me me (3-4 μm) thiab muaj qhov sib xyaw ua ke, thiab cov hmoov hmoov yog kheej kheej lossis kwv yees li tus kheej kheej.
5. Nias
Lub crushed magnetic hmoov yog loaded rau hauv pwm, ib tug sab nraud magnetic teb yog thov rau orientation, thiab cov hmoov yog nias tom qab orientation. Powder magnetic field orientation yog ib qho ntawm cov txheej txheem tseem ceeb rau kev ua tau zoo sintered NdFeB. Nyob rau hauv cov txheej txheem molding, tam sim no muaj peb txoj kev uas feem ntau siv hauv kev lag luam: molding, molding ntxiv rau txias isostatic nias, thiab roj hmab pwm isostatic nias. Raws li tib cov ntsiab lus neodymium, roj hmab pwm isostatic nias tuaj yeem tau txais lub zog sib nqus ntau dua. khoom.
6. Kev kho cua sov
Tom qab nias, tus txheeb ze ceev ntawm cov hlau nplaum compact yog kuj siab. Txhawm rau ua kom cov hlau nplaum muaj cov khoom sib nqus ruaj khov, lub compact yuav tsum tau rhuab mus rau qhov kub thiab txias hauv qab lub melting point ntawm theem pib ntawm cov hmoov thiab kub kho rau ib lub sij hawm. Cov txheej txheem no tseem hu ua sintering. Tom qab kub-kub quenching, nws kuj yuav tsum tau tempered ntawm ib tug tej yam kub thiab optimize tus qauv thiab tau txais qhov zoo tshaj plaws magnetic zog. (Tempering yog hais txog qhov txias ntawm sintered magnetic hmoov dawb paug rau qee qhov kub thiab txias dua)
7. Machining
Vim yog cov yam ntxwv thiab cov kev txwv ntawm kev sib nqus teb kev taw qhia kev tsim cov txheej txheem, nws yog ib qho nyuaj rau sintered hlau nplaum ncaj qha mus cuag cov duab thiab qhov loj qhov tseeb rau kev siv tswv yim ib zaug. Ntau cov hlau nplaum tiav lawm yog qhov me me thiab txoj hauv kev zoo, thiab tsuas yog ua tiav los ntawm cov hlau nplaum dawb paug ntawm qee yam duab. Sintered NdFeB cov khoom yog ib qho nyuaj thiab nkig, thiab kev ua haujlwm dav dav tuaj yeem nqa tawm txiav, drilling, sib tsoo, thiab dov.
8. Nplej Boundary Diffusion
Lub ntiaj teb tsis tshua muaj cov ntsiab lus dysprosium thiab terbium tuaj yeem txhim kho kev coercivity thiab kub stability ntawm cov khoom. Rau sintered NdFeB cov ntaub ntawv uas yuav tsum tau ntau dua coercivity thiab kev khiav hauj lwm kub, dysprosium thiab terbium feem ntau yuav tsum tau ntxiv, tab sis tus nqi ntawm ob lub ntsiab yog siab heev. Siab heev, uas yuav ua rau cov hlau nplaum ntau lawm tus nqi nce sharply. Tam sim no, grain ciam diffusion tshuab yog feem ntau siv nyob rau hauv kev lag luam los txo tus nqi ntawm hnyav tsawg lub ntiaj teb hais ntxiv.
9. Kev kho deg
Sintered NdFeB yog cov khoom siv hmoov nrog cov tshuaj muaj zog heev. Me me pores thiab kab noj hniav nyob rau hauv, yooj yim corroded thiab oxidized nyob rau hauv cov huab cua. Sij hawm dhau mus, cov khoom sib nqus yuav raug txo qis lossis txawm tias poob, yog li kev soj ntsuam nruj yuav tsum tau ua ua ntej siv. Anti-corrosion kho. Tam sim no, kev tiv thaiv corrosion ntawm NdFeB feem ntau siv electroplating, tshuaj plating, electrophoresis, phosphating, thiab lwm yam. Electroplating, raws li ib tug paub tab hlau nto kho txoj kev, yog dav siv.
10. Magnetization
Magnetization yog ib kauj ruam tseem ceeb rau sintered NdFeB cov hlau nplaum ruaj khov kom tau txais cov hlau nplaum. Lub magnetizer yog ib qho cuab yeej rau kev sib nqus cov khoom sib nqus los yog cov khoom siv sib nqus. Nws siv cov hlau nplaum sib nqus rau cov hlau nplaum NdFeB hlau nplaum. Yog hais tias lub magnetized magnetic teb tsis tuaj yeem ncav cuag cov kev saturation magnetic teb, residual magnetism Br thiab coercive force Hcj ntawm cov hlau nplaum tas mus li yuav tsis ncav cuag qhov kev xav tau. Ntxiv rau qhov zoo tib yam nkaus xwb-ncej magnetization, sintered NdFeB kuj tuaj yeem ua tau ntau tus ncej hlau nplaum raws li qhov xav tau tiag tiag, uas yog, tom qab sib nqus, ntau N thiab S ncej tuaj yeem tshwm sim ntawm lub dav hlau.
11. Ntim thiab Shipping
Ntim thiab xa khoom yog cov kauj ruam kawg ua ntej cov hlau nplaum tawm hauv lub hoobkas. Cov chaw tsim khoom hlau nplaum tuaj yeem ntim raws li tus neeg yuav khoom xav tau. Yog tias tus neeg yuav khoom muaj kev ntim tshwj xeeb, nws tuaj yeem qhia tus neeg muag khoom ua ntej. Sintered NdFeB cov hlau nplaum ruaj khov muaj zog hlau nplaum, yog li kev thauj mus los hauv tsev feem ntau siv kev thauj mus los hauv av. Rau kev xa tawm txawv teb chaws, lawv tuaj yeem thauj los ntawm huab cua tom qab tau txais kev ntim tshwj xeeb sib nqus cais thiab tshuaj xyuas thiab kev ntsuam xyuas los ntawm cov chaw tshaj lij.
