Zotsatira za ufa kusinthidwa zowonjezera pakupanga ndondomeko NdFeb akusowekapo.
Kuti apange apamwamba-ntchito sintered NdFebmaginito okhazikikazakuthupi, tiyenera kulamulira kukula kwa airflow akupera maginito ufa particles, kuti kukula kwa maginito ufa particles mu 2.5 ~ 5μm mlandu oposa 95%.Xinfeng Magnet adapeza kuti njirayo imatha kusintha kwambiri powonjezera zowonjezera zowonjezera ufa panjira yophera mpweya.
Zowonjezera zosinthidwa ufa ziyenera kukhala ndi ntchito zophatikizika, zomwe ndi: (1) anti-oxidation function;(2) Sinthani ufa fluidity ntchito;(3) Pewani kuyaka kwa ufa, kutanthauza ntchito yobwezeretsanso.Kuchuluka kwa zowonjezera ndi za 0.035% ~ 0.05% (gawo la misa) la ufa wa maginito, womwe nthawi zambiri umawonjezeredwa nthawi yomweyo ndi maginito a ufa pamalo odyetsera mpweya.
Zowonjezera ndimagulu azinthu zambiri, okhala ndi magulu a lipophilic, omwe ndi maunyolo a hydrocarbon, okhala ndi magulu ang'onoang'ono a polar, monga magulu a lipid, kotero kuti unyolo wa hydrocarbon ukhale ndi unyolo woyenerera.Maginito ufa particles mobwerezabwereza kugundana ndi kukhudza ndi zina mu mpweya akupera ndondomeko, kotero kuti pamwamba pa tinthu tambirimbiri yokutidwa ndi wosanjikiza filimu zowonjezera ndi makulidwe pafupifupi 5 ~ 8nm.Imagwira ntchito zotsatirazi: (1) Pewani tinthu tating'ono ting'onoting'ono ting'onoting'ono kuti tisagwirizane ndi mpweya, sewerani anti-oxidation;(2) Kufooketsa mphamvu magnetostatic pakati ufa particles, kuchepetsa agglomeration pakati ufa particles, kuchita mbali ya dispersant;(3) Wonjezerani madzimadzi ndi kuyenda kwa tinthu tating'onoting'ono ndikugwira ntchito yamafuta;(4) Zimapindulitsa kuwongolera kwa tinthu tating'onoting'ono ta maginito, zomwe zimatha kuwongolera;The BR akhoza ziwonjezeke ndi 0.02-0.04 T, ndi maginito mphamvu mankhwala (BH) m akhoza ziwonjezeke mofanana.Tiyenera kudziwa kuti kutentha kosasinthika kwa chowonjezera ichi ndi 350 ℃.Kutentha kwa sintering kuyenera kuchitidwa pa 400-420 ℃ kwakanthawi, kuti zowonjezera zitha kutulutsidwa kuchokera ku maginito, kuti musawotche.
Zinthu zofunika kupanga mkulu khalidwe sintered NdFeb okhazikika maginito.
Pofuna kupeza lathu labwino la maginito, Xinfeng maginito anafika pamapeto patatha zaka kuyesera ndi Integrated ndemanga pa msika ntchito kasitomala kuti m'pofunika kuti sintered NdFeb maginito ufa kukwaniritsa zofunika zotsatirazi kuti mankhwala apamwamba angathe. kulengedwa, ndipo mankhwala okhawo ali abwino, mankhwala adzakhala bwino.(1) The ufa tinthu kukula yaing'ono (3 ~ 4μm), ndi kugawa kukula ndi yopapatiza, ndiko kuti, zofunika 3 ~ 4μm particles amawerengera 95%, alibe zosakwana 1μm kapena kuposa 7μm particles, kuti onetsetsani kuti particles zonse ndi kristalo imodzi.(2) Tinthu ting'onoting'ono ta ufa ndi ozungulira kapena pafupifupi ozungulira.(3) Zowonongeka za kristalo za tinthu ta ufa ziyenera kukhala zochepa momwe zingathere.(4) Pamene kuphwanya, ndi bwino kuswa pamodzi kristalo siteji, ndi kuyesetsa kukwaniritsa pamwamba pa tinthu aliyense ali wolemera Nd gawo, amene amayala maziko a madzi gawo sintering kumbuyo ndi kupewa kuchitika kwa kalasi ⅱ malire tirigu.(5) Zonyansa ndi mpweya zomwe zimayikidwa pamwamba pa tinthu ta ufa ziyenera kukhala zochepa momwe zingathere, makamaka mpweya wa okosijeni ukhale wochepa.Choncho, pokonzekera ufa ayenera kuchitidwa mu chiyero chachikulu cha chitetezo cha gasi kapena mpweya wotsekemera, pofuna kuteteza maginito ufa kukhudzana ndi mpweya kapena mpweya wonyowa.The pamwamba zinthu zisanu ndi zofunika kupanga apamwamba sintered NdFeb maginito okhazikika, kusowa kwa aliyense si zofunika, zikuwoneka ngati zosavuta, kwenikweni aliyense akhoza kuchita wangwiro si wamba, Xinfeng maginito ndi wokonzeka kugwira ntchito limodzi ndi anthu amitundu yonse ya moyo. kupanga zinthu zabwino kwambiri, ndipo yesetsani kupatsa makasitomala ntchito zabwino kwambiri.
Kupambana kwatsopano kwa Xinfeng Magnet pakuwongolera kukakamiza kwa sintered NdFeb maginito.
Coercivity ndi imodzi mwazinthu zofunikira zaukadaulo za maginito okhazikika.Kuchulukitsa kukakamiza kumatha kukulitsa mphamvu yamaginito yamaginito, kumathandizira kukana kwa maginito okhazikika omwe amagwiritsidwa ntchito, ndikuwongolera kukhazikika kwake.Pakali pano, pokonza koyera ternary sintered NdFeb maginito okhazikika, luso maginito katundu ndi mfundo mfundo, ndi remanence BR wafika 96,27% ya mtengo wake ongoyerekeza, ndi lalikulu maginito mphamvu mankhwala BH wafika 91,5% ya ongolankhula. mtengo.Komabe, kukakamiza kokakamiza kwafika pa 12% yokha ya mtengo wake wamalingaliro.Ndi kuthekera kwakukulu kopititsa patsogolo mphamvu yake yokakamiza, pali kuwonjezeka kwakukulu kwa danga.Xinfeng maginito wakhala akugwira ntchito molimbika pa izi.
Choyamba, kukakamiza kwa maginito kumatha kupitsidwanso bwino pochotsa Nd ndi Dy ndi Tb.Komabe, m’zitsulo zosowa zapadziko lapansi, Dy ndi Tb ndi zotsika kwambiri komanso zodula, ndipo Dy ndi Tb zitha kuonjezedwa m’machulukidwe ochepa chabe.Chachiwiri, kuwonjezera kwa zinthu zina zachitsulo monga AL, Nb, Ga, Ti, Zr, Mo, ndi zina zotero, pamene zinthuzi zimalowa mu kristalo, microstructure ndi ntchito ya ndondomeko zimapangidwira bwino, ndikuwonjezera kukakamiza kwa maginito.Chachitatu, coercivity ya maginito akhoza bwino bwino powonjezera zinthu ndi ntchito otsika kutentha sintering kapena awiri aloyi njira kuchepetsa pafupifupi kristalo kukula.
Kenako, Xinfeng maginito adzapitiriza ntchito zolimba kusintha lalikulu maginito mphamvu mankhwala a sintered NdFeb, ndipo nthawi zonse kupereka mankhwala abwino kwa makasitomala.
Nthawi yotumiza: Jul-12-2018