NdFeB hlau nplaum yog cov hlau nplaum ruaj khov nrog cov khoom sib nqus zoo heev thiab ntau yam kev siv. Cov nram qab no Xiaobian qhia koj li cas los txiav txim qhov zoo ntawm NdFeB hlau nplaum?
Ua ntej, cov khoom ua tau zoo
Remanence:
Remanence yog qhov sib nqus induction siv los ntawm cov hlau nplaum thaum sab nraud magnetic teb yog magnetized rau kev saturation tom qab tshem tawm ntawm sab nraud magnetic teb, chav tsev feem ntau yog Tesla (T) los yog Gaussian (Gs), NdFeB mus tas li hlau nplaum muaj ib tug heev. siab remanence, tam sim no paub tias yog cov khoom siv hlau nplaum ruaj khov nrog ntau dua Br, qhov siab dua tus nqi remanence, qhov zoo dua cov khoom sib nqus ntawm cov hlau nplaum.
Coercive quab yuam:
Coercive quab yuam muab faib ua magnetic induced coercive force (Hcb) thiab intrinsic coercive force (Hcj). Sib nqus induced coercive quab yuam yog tus nqi ntawm qhov rov qab magnetic teb lub zog yuav tsum tau thaum lub magnetic induction intensity poob mus rau xoom tom qab cov hlau nplaum yog reversely magnetized tom qab technical saturation magnetization. Lub zog intrinsic coercive yog qhov rov qab sib nqus teb lub zog yuav tsum tau txo cov hlau nplaum ntawm cov hlau nplaum mus rau xoom, lub zog quab yuam ntawm NdFeB feem ntau yog siab, thiab lub zog quab yuam intrinsic yog qhov tseem ceeb, vim nws muaj feem cuam tshuam ncaj qha rau lub peev xwm los tiv thaiv demagnetization. ntawm cov hlau nplaum. Qhov siab dua tus nqi coercivity, qhov zoo dua qhov ruaj khov ntawm cov hlau nplaum.
Magnetic zog khoom:
Cov khoom siv hluav taws xob sib nqus yog tus nqi loj dua ntawm cov khoom ntawm B thiab H ntawm txhua qhov chaw ntawm qhov demagnetization nkhaus, uas yog, (BH) max, uas yog ib qho tseem ceeb rau kev ntsuas lub zog khaws cia los ntawm cov hlau nplaum. Qhov loj dua qhov (BH) max yog, qhov loj dua lub zog sib nqus muaj nyob hauv cov hlau nplaum thiab qhov ua tau zoo dua.
Qhov thib ob, cov khoom zoo li
Nto tiav:
Saib xyuas seb cov hlau nplaum saum npoo yog du, tsis muaj npuas, tawg, tsis sib xws, zoo NdFeB hlau nplaum nto du, tsis muaj qhov tsis xws luag, thiab txheej txheej.
Txheej zoo:
Kev kho saum npoo ntawm NdFeB hlau nplaum muaj qhov cuam tshuam zoo rau nws lub neej kev pabcuam thiab sib nqus tuav tus nqi, kev kho ntau yog Ni, Zn, Epoxy, thiab lwm yam., Ni plated hlau nplaum muaj qhov zoo ntawm kev ua haujlwm zoo corrosion, siab hardness, tsis yooj yim rau tev. tawm; Thiab Epoxy nto kho tuaj yeem txhim kho qhov hnav tsis kam thiab corrosion kuj ntawm cov hlau nplaum, tab sis yuav txo qis qhov kawg sib nqus quab yuam me ntsis, cov txheej yuav tsum zoo ib yam, tsis muaj tev, tsis muaj xeb.
3. Lwm qhov ntsuas
Kev sib xyaw ua ke:
Neodymium hlau boron hlau nplaum yog sib xyaw ntawm neodymium, hlau, boron thiab lwm yam kab kawm, uas ntau dua cov ntsiab lus ntawm neodymium, lub zog sib nqus zog dua, tab sis tib lub sij hawm tus nqi kim dua, yog li qhov tsim nyog muaj pes tsawg leeg yog ib qho. ntawm cov yam tseem ceeb los txiav txim qhov zoo ntawm cov hlau nplaum. Feem ntau, cov muaj pes tsawg leeg ntawm cov hlau nplaum zoo NdFeB yog tswj ntawm txog Nd2Fe14B.
Kub stability:
Cov khoom sib nqus ntawm NdFeB hlau nplaum cuam tshuam zoo heev los ntawm qhov kub thiab txias, tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias. Yog li ntawd, rau cov hlau nplaum uas yuav tsum tau ua haujlwm nyob rau hauv qhov kub thiab txias ib puag ncig, yuav tsum tau xaiv cov qib siab intrinsic coercivity (Hcj) kom ntseeg tau tias nws ruaj khov.
4. Kev sim
Gauss Meter Test:
Siv lub ntsuas Gaussian tuaj yeem kuaj xyuas cov khoom sib nqus ntawm cov hlau nplaum, xws li remanence thiab sib nqus tis. Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias Gauss meter tsuas tuaj yeem muab cov ntaub ntawv sib nqus sib nqus, thiab cov cuab yeej tshaj lij yuav xav tau rau kev ntsuas kev ntsuas siab.
Demagnetization nkhaus analyzer:
Yog tias cov khoom sib nqus ntawm cov hlau nplaum yog siab heev, koj tuaj yeem siv lub demagnetization nkhaus analyzer los ntsuas cov khoom sib nqus ntawm cov hlau nplaum, txoj kev no tuaj yeem muab cov ntaub ntawv ntxaws thiab meej dua cov ntaub ntawv sib nqus, tab sis cov khoom siv nqi siab thiab kev ua haujlwm yog. complex.
