1. Cov khoom xyaw
Sintered NdFeB cov khoom siv hlau nplaum ruaj khov yog cov khoom siv hlau nplaum ruaj khov raws li cov khoom sib txuas intermetallic Nd2Fe14B, thiab nws cov khoom tseem ceeb yog neodymium (Nd), hlau (Fe), thiab boron (B). Txhawm rau kom tau txais cov khoom sib txawv, neodymium hauv cov khoom tuaj yeem hloov pauv los ntawm lwm cov hlau tsis tshua muaj hauv ntiaj teb xws li dysprosium (Dy) thiab praseodymium (Pr), thiab hlau tuaj yeem hloov qee yam los ntawm lwm cov hlau xws li cobalt (Co) thiab txhuas ( A). Nd2Fe14B compound muaj ib tug tetragonal siv lead ua qauv, muaj siab saturation magnetization thiab uniaxial anisotropy teb, thiab yog lub ntsiab qhov chaw ntawm mus tas li sib nqus cov khoom ntawm NdFeB mus tas li hlau nplaum cov ntaub ntawv. Cov khoom siv raw ntawm sintered NdFeB yog ib qho tseem ceeb heev, nws muaj feem xyuam nrog seb cov khoom lag luam zoo thiab cov khoom siv hlau nplaum tuaj yeem ua tau raws li cov neeg siv khoom xav tau, thiab qhov sib txawv sib txawv cuam tshuam rau hom khoom siv hlau nplaum ruaj khov.
2. Smelting
Smelting yog thawj txheej txheem rau sintered NdFeB hlau nplaum nkag mus rau cov txheej txheem ntau lawm. Lub hom phiaj ntawm smelting yog induce raw cov ntaub ntawv (Fe, Nd, B-Fe, Dy, Al, Nb, Co, Cu, thiab lwm yam) Nws yog melted nyob rau hauv lub cub tawg kom nws yuav tsum tau poured kom tau lub ingot qauv (alloy. strip daim ntawv). Cov txheej txheem no yuav tsum tau lub qhov cub kub kom txog li 1300 degrees thiab kav ntev li plaub teev kom tiav. Tom qab cov txheej txheem no, cov ntaub ntawv raw yog ua tiav rau hauv cov ntawv hlau los ntawm kub melting thiab txias, thiab ces mus rau cov txheej txheem tom ntej. Cov qauv ingot tsis tsuas yog muaj kev cuam tshuam tseem ceeb ntawm cov hmoov ua, kev taw qhia thiab cov txheej txheem sintering, tab sis kuj yog cov khoom ntawm cov hmoov thiab cov khoom siv hlau nplaum kawg sintered. Yog tsis muaj cov qauv ingot zoo heev, nws tsis tuaj yeem tsim cov hlau nplaum ua haujlwm siab sintered, thiab cov qauv ingot yog ib qho ntawm cov thev naus laus zis tseem ceeb txwv kev ua haujlwm ntawm cov hlau nplaum.
3. Viav vias nrog hydrogen tawg
HD (Hydrogen Decrepitation) txheej txheem ntawm hydrogen crushing yog siv kev sib cuam tshuam ntawm lub ntiaj teb tsis tshua muaj alloys thiab hydrogen kom ua tiav lub hom phiaj ntawm crushing ingot alloys. Hydrogen, thiaj li hais tias lub siab hydrogen yog hais txog ob lub cua, thiab tom qab ob peb feeb, lub suab tawg ntawm lub alloy ingot yuav hnov thiab kub yuav nce. Cov txheej txheem no hu ua "hydrogen detonation" (HD), thiab yog qhov tshwm sim ntawm hydrogenation ntawm Nd-Fe-B alloy.
4. Dav hlau zeb
Txhawm rau kom tau txais cov hlau nplaum zoo, cov hmoov av me me yuav tsum yog me me (3-4μm) thiab qhov loj me yog qhov sib xyaw ua ke, thiab cov hmoov hmoov yog kheej kheej los yog ze li ntawm spherical.
Lub dav hlau mills siv cov cua kub siab los tshuab cov hmoov coarse. Tom qab cov airflow nthuav dav, cov khoom tom qab kev sib tsoo yog tsav mus rau hauv qhov chaw faib khoom. Hauv cheeb tsam kev faib tawm, cov hmoov uas ncav cuag qhov loj me yog sib cais los ntawm lub turbine grouping log. Qhov luaj li cas yog kho los ntawm qhov ceev ntawm lub log faib. Cov hmoov sib cais yog muab tawm nrog cov cua ntws thiab nkag mus rau hauv lub tshuab hluav taws xob sib cais rau kev sib cais. Tus so ntawm cov hmoov coarse rov qab mus rau qhov chaw sib tsoo kom sib tsoo txuas ntxiv mus txog thaum nws ncav cuag qhov loj me thiab tau muab cais ua cov hmoov zoo ntawm qhov loj me. .
5. Sib nqus teb Orientation tsim
Cov khoom sib nqus tau muab faib ua ob hom: cov hlau nplaum isotropic thiab cov hlau nplaum anisotropic. Cov hlau nplaum Isotropic muaj cov khoom sib nqus zoo ib yam hauv txhua qhov kev taw qhia thiab tuaj yeem nyiam ua ke arbitrarily; anisotropic hlau nplaum muaj cov khoom sib nqus sib txawv hauv cov lus qhia sib txawv, thiab cov kev taw qhia uas tuaj yeem tau txais cov khoom sib nqus zoo tshaj plaws yog hu ua kev taw qhia ntawm cov hlau nplaum. Lub square sintered NdFeB hlau nplaum muaj qhov loj tshaj plaws hlau nplaum lub zog tsuas yog nyob rau hauv cov kev taw qhia, thiab lub zog hlau nplaum nyob rau hauv ob qho tib si cov lus qhia yog ntau me me.
6. Kev kho deg
Muaj ntau txoj hauv kev rau kev kho deg ntawm ntau tus ncej sintered NdFeB hlau nplaum, uas tuaj yeem yog electroplating (hlau txheej) lossis electrophoresis (cov txheej txheej)
7. Cov txheej txheem magnetization
Cov hlau nplaum tas mus li feem ntau yog magnetized siv lub tshuab hlau nplaum tom qab electroplating. Magnetization tuaj yeem yog axial lossis radial. Qhov no nyob ntawm txoj kev taw qhia kev taw qhia ntawm cov nqaij nyoos. Tus naj npawb ntawm cov ncej magnetized, ncej sib txawv thiab ncej dav, thiab angular sib txawv ntawm cov hlau nplaum nyob ntawm tus tsim ntawm cov khoom sib nqus. Magnetization yog cov txheej txheem ntawm kev siv cov hlau nplaum sib nqus rau sintered NdFeB cov hlau nplaum ruaj khov raws li cov kev taw qhia ntawm cov hlau nplaum sib nqus, thiab maj mam nce cov hlau nplaum lub zog kom nws ncav cuag lub xeev kev saturation.
Cim npe nrov: Tuam Tshoj Multi-ncej Magnetization ntawm sintered ndfeb hlau nplaum manufacturers, lwm tus neeg, Hoobkas
