Cov Txheej Txheem Feem Ntau Ntawm Bonded NdFeB Magnets

NdFeB muaj zog hlau nplaum yog ib qho ntawm txhua hom hlau nplaum ruaj khov. Nws belongs rau cov khoom siv hlau nplaum tsis tshua muaj hauv ntiaj teb, thiab nws cov txheej txheem tsim khoom kuj txawv heev. Yog li, tsab xov xwm no yuav qhia koj txog ntau yam kev tsim khoom ntawm cov hlau nplaum NdFeB sib raug zoo.

 

Cov txheej txheem kev sib txuas ntawm kev sib txuas neodymium hlau nplaum yog qhov tseem ceeb ntawm kev npaj cov hlau nplaum, thiab muaj 4 txoj hauv kev tsim khoom:

 

1. Calendering

Cov hmoov sib nqus thiab cov nplaum sib tov sib xyaw ua ke hauv qhov sib piv ntawm 7: 3, dov mus rau qhov xav tau tuab thiab tom qab ntawd ua kom cov khoom tiav. Feem ntau, vinyl thiab nitrile roj hmab yog siv los ua cov nplaum rau kev sib txuas nrog ferrite lossis ib feem thiab ib qho me me ntawm NdFeB. Feem ntau, tsis tas yuav tsum muaj kev kho mob saum npoo, thiab kev tiv thaiv zaj duab xis lossis kev kho kom zoo nkauj, thiab nickel plating yog xav tau rau NdFeB.

 

2. Txhaj tshuaj molding

Cov hmoov sib nqus yog tov nrog cov ntawv khi, rhuab thiab kneaded, pre-granulated, qhuav, thiab ces xa mus rau lub cua sov chamber los ntawm lub kauv qhia pas nrig rau cua sov, txhaj rau hauv lub pwm kab noj hniav rau molding, thiab cov khoom tiav yog tau tom qab txias. . Feem ntau, nylon 6, polyamide, polyester thiab pvc yog siv nyob rau hauv ib tug npaum li ntawm 20 feem pua ​​​​~ 30 feem pua ​​(cov feem feem), thiab rigidly bonded mus tas li hlau nplaum nrog complex duab. Tom qab ferrite, samarium cobalt hlau nplaum thiab neodymium hlau boron hlau nplaum, tsis tas yuav tsum tau kho deg.

 

3. Extrusion

Nws yog qhov pib zoo ib yam li txoj kev txhaj tshuaj molding, qhov sib txawv tsuas yog tom qab cua sov, cov pellets raug extruded rau hauv pwm los ntawm kab noj hniav rau kev nruam molding. Nylon 6, polyamide, polyester thiab polyethylene kuj tseem siv los tsim cov thooj voos kheej kheej lossis lub nplhaib zoo li cov hlau nplaum ntev uas nyuaj rau kev ua tiav los ntawm lwm cov txheej txheem, xws li ferrite, samarium-cobalt hlau nplaum thiab neodymium-hlau-boron hlau nplaum.

 

4. Moulding

Sib tov cov hmoov sib nqus thiab cov binder raws li qhov sib piv, granulate thiab ntxiv ib co coupling tus neeg sawv cev, nias rau hauv pwm, solidify ntawm 120 degree ~ 150 degree, thiab thaum kawg tau cov khoom tiav. Siv cov khoom epoxy resin lossis phenolic resin, qhov ntxiv yog 1 feem pua ​​~ 5 feem pua. Cov hlau nplaum tas mus li tuaj yeem sib txuas raws li qhov loj dua thiab cov duab yooj yim. Feem ntau, cathodic electrophoresis, txau, evaporation thiab lwm txoj kev yog siv rau txheej tiv thaiv.

 

Cov txheej txheem molding ntawm bonded NdFeB hlau nplaum yog muab faib ua plaub hom, feem ntau yog siv los ntawm kev txhaj tshuaj molding thiab compression molding.

 

Cov txheej txheem nthuav dav:

1. Sib nqus hmoov, coupling agent → nplaum → batching → non-magnetic teb nias molding → kho kho → magnetization → tshuaj xyuas thiab ntim

2. Sib nqus hmoov, coupling agent → nplaum → batching → magnetic teb compression molding → degaussing → kho kho → magnetization → kuaj thiab ntim