Qee lub npe uas cov kws kho mob sib nqus yuav tsum paub (1)

1. Hysteresis Curve

Cov khoom siv hlau nplaum nyuaj (xws li NdFeb muaj zog sib nqus) muaj ob yam tseem ceeb. Ib qho yog tias nws tuaj yeem ua kom muaj zog magnetized nyob rau hauv qhov kev txiav txim ntawm sab nraud magnetic teb, thiab lwm yam yog hysteresis, uas yog, cov khoom siv hlau nplaum nyuaj tseem khaws lub xeev magnetization tom qab tshem tawm ntawm sab nraud magnetic teb. Cov duab hauv qab no qhia txog kev sib raug zoo ntawm qhov sib nqus induction siv B thiab qhov sib nqus hlau nplaum H ntawm cov khoom siv hlau nplaum nyuaj, uas yog hu ua hysteresis nkhaus.

2. Demagnetization nkhaus

Thaum lub magnetic teb thim rov qab los ntawm O maj mam mus rau -Hc, lub magnetic induction intensity B ploj, qhia tau hais tias kom tshem tawm remanence, rov qab magnetic teb yuav tsum tau siv. Hc yog hu ua coercivity, thiab nws qhov loj me qhia txog lub peev xwm ntawm cov khoom siv hlau nplaum kom tswj tau qhov tsis zoo. Cov kab liab kab ntu yog hu ua demagnetization nkhaus.

3.Intrinsic Curve thiab Rectangle/Square Degree

Lub intrinsic magnetic induction generated los ntawm cov khoom hlau nplaum ruaj khov tom qab magnetization nyob rau hauv qhov kev txiav txim ntawm sab nraud magnetic teb yog hu ua intrinsic magnetic induction Bi, tseem hu ua magnetic polarization siv J. Qhov nkhaus piav txog kev sib raug zoo ntawm intrinsic magnetic induction intensity Bi (J) thiab magnetic teb. Kev siv H yog qhov nkhaus uas qhia txog cov khoom sib nqus ntawm cov khoom siv hlau nplaum ruaj khov. Nws yog hu ua intrinsic demagnetization nkhaus, los yog intrinsic nkhaus luv luv.Thaum qhov sib nqus polarization siv J ntawm qhov intrinsic demagnetization nkhaus yog 0, qhov sib nqus sib nqus siv yog hu ua intrinsic coercivity Hcj.

4.Kev kho deg - Phosphating

Sintered ndFeb raug cov hlau nplaum yuav oxidize thiab corrode hauv huab cua. Thaum Ndfeb cov hlau nplaum tig thiab khaws cia ntev dhau lawm, thiab cov txheej txheem kev kho saum npoo tom ntej tsis meej, cov txheej txheem phosphating feem ntau yog siv los ua kev kho yooj yim los tiv thaiv corrosion. Cov txheej txheem phosphating ntawm cov hlau nplaum saum npoo yog raws li nram no: tshem tawm roj → dej ntxuav → pickling → dej ntxuav → deg txias → phosphating kho → kaw kom qhuav. Cov txheej txheem phosphating yog tsim los ntawm kev lag luam phosphating kua. Tom qab phosphating, cov xim ntawm cov khoom yog sib xws thiab qhov chaw huv si. Lub tshuab nqus tsev encapsulation tuaj yeem siv los ua kom lub sijhawm cia ntev. Qhov chaw cia khoom kawg yog zoo dua li yav dhau los cia txoj kev ntawm cov roj immersion thiab roj txheej.