Umphumo we powder modified additive kwinkqubo yokuvelisa ye-NdFeb blank.
Ukuze kuveliswe ukusebenza okuphezulu kwe-sintered NdFebumazibuthe osisigxinaizinto eziphathekayo, kufuneka silawule ubungakanani bomoya wokusila amasuntswana omgubo wemagnethi, ukuze ubungakanani bamasuntswana omgubo wemagnethi kwi-2.5 ~ 5μm ibalwe ngaphezulu kwe-95%.I-Xinfeng Magnet ifumanise ukuba inkqubo inokuphuculwa kakhulu ngokongeza izongezo ezikhethekileyo zokuguqulwa komgubo kwinkqubo yokusila.
Izongezo ezilungisiweyo zomgubo kufuneka zibe nomsebenzi odibeneyo, ongulo: (1) umsebenzi wokuchasana ne-oxidation;(2) Ukuphucula umsebenzi we-powder fluidity;(3) Thintela ukutsha komgubo, oko kukuthi umsebenzi wokubuyisela ukuvutha.Ubungakanani bokongeza malunga ne-0.035% ~ 0.05% (iqhezu lobuninzi) be-powder magnetic, edla ngokudibaniswa ngexesha elifanayo kunye ne-powder magnetic kwindawo yokutya yokugaya umoya.
I-additive yi-multi-component organic compound, kunye namaqela e-lipophilic, oko kukuthi i-hydrocarbon chains, equkethe amaqela amancinci amancinci, njengamaqela e-lipid, ukwenzela ukuba ikhonkco le-hydrocarbon linobude obufanelekileyo bekhonkco.Amasuntswana omgubo wemagnethi angqubana ngokuphindaphindiweyo kwaye achukumise kunye nezongezelelo kwinkqubo yokugaya i-airflow, ukuze umphezulu we-particle nganye ugqunywe ngoluhlu lwefilimu eyongezelelweyo kunye nobukhulu obumalunga ne-5 ~ 8nm.Idlala le misebenzi ilandelayo: (1) Ukuthintela amaqhekeza e powder ekudibaneni nomoya, dlala indima ye-anti-oxidation;(2) Yenza buthathaka isiphumo semagnetostatic phakathi kwamasuntswana omgubo, nciphisa i-agglomeration phakathi kwamasuntswana omgubo, dlala indima ye-dispersant;(3) Ukwandisa ulwelo kunye nokuhamba kwamasuntswana omgubo kwaye udlale indima ye-lubricant;(4) Kuyinzuzo ukuqhelaniswa kwamasuntswana omgubo kwintsimi yamagnetic, enokuphucula ukuqhelaniswa;I-BR inokunyuswa ngo-0.02-0.04 T, kunye nemveliso yamandla ombane (BH) m inokunyuswa ngokuhambelanayo.Kufuneka kuqatshelwe ukuba ubushushu obuguquguqukayo kwesi songezo yi-350 ℃.Ubushushu be-Sintering kufuneka bugcinwe kwi-400-420 ℃ kangangexesha elithile, ukuze izongezo zikhutshwe kwimagnethi, ukuze zingangcwabi.
Iimeko eziyimfuneko ekuveliseni umgangatho ophezulu sintered NdFeb umazibuthe esisigxina.
Ukuze ufumane ulungelelwaniso olululo lweemagnethi, iXinfeng umazibuthe yafikelela kwisigqibo emva kweminyaka yovavanyo kunye nengxelo edityanisiweyo malunga nokusetyenziswa kwabathengi bemarike ukuba kuyimfuneko ukwenza i-NdFeb yomgubo wemagnethi ukuze ihlangabezane nezi mfuno zilandelayo ukuze iimveliso ezikumgangatho ophezulu zidalwe, kwaye kuphela izinto zonyango zilungile, iyeza liya kuba ngcono.(1) Ubungakanani besuntswana lomgubo lincinci (3 ~ 4μm), kwaye ubungakanani bokusabalalisa bumxinwa, oko kukuthi, iimfuno ze-3 ~ 4μm zamasuntswana ezibalelwa kwi-95%, azikho ngaphantsi kwe-1μm okanye ngaphezulu kwe-7μm, ukuze qinisekisa ukuba onke amasuntswana ayikristale enye.(2) Amasuntswana omgubo angqukuva okanye amalunga nengqukuva.(3) Iziphene zekristale zamasuntswana omgubo kufuneka zibencinci kangangoko.(4) Xa ukutyumza, kungcono ukwaphula ecaleni crystal eqongeni, kwaye sizame ukufikelela umphezulu amasuntswana ngalinye ineSigaba Rich Nd, nto leyo ibeka isiseko senqanaba ulwelo sintering ngasemva kunye nokuthintela ukwenzeka eklasini ⅱ komda okuziinkozo.(5) Ukungcola kunye neegesi ezibhengezwa kumphezulu we-powder particles kufuneka zibe zincinci kangangoko kunokwenzeka, ngakumbi umxholo we-oksijini kufuneka ube ngaphantsi.Ngoko ke, inkqubo yokulungiselela umgubo kufuneka iqhutywe kwindawo yokukhusela igesi ye-inert ecocekileyo okanye iimeko ze-vacuum, ukuze kuthintelwe ukudibanisa umgubo wamagnetic kunye ne-oxygen okanye umoya omanzi.Ezi meko zintlanu zingentla ziyimfuneko kwimveliso ekumgangatho ophezulu wemagnethi esisigxina ye-sintered NdFeb, ukunqongophala ngakunye akunqweneleki, kubonakala ngathi kulula, eneneni ngamnye unokwenza okugqibeleleyo akukho lula, iimagnethi ze-Xinfeng zikulungele ukusebenza kunye nabantu abavela kuzo zonke iindlela zobomi ukuya. yenza iimveliso ezigqibeleleyo, kwaye uzame ukubonelela abathengi ngeenkonzo ezisemgangathweni.
Impumelelo entsha kaXinfeng Magnet ekuphuculeni ukunyanzeliswa kwemagnethi ye-NdFeb ene-sintered.
Ukunyanzeliswa yenye yezinto ezibalulekileyo iparameters zobugcisa umazibuthe osisigxina.Ukonyusa ukunyanzeliswa kunokonyusa imveliso yamandla kazibuthe enkulu, kuphucule ukuxhathisa kwe-demagnetization yemagnethi esisigxina esetyenziswayo, kunye nokuphucula ukuzinza kwayo.Okwangoku, ekulungiseleleni ecocekileyo ternary sintered NdFeb iimagnethi esisigxina, iimpawu zobugcisa magnetic kunye namaxabiso ithiyori, kunye remanence BR sele ifikelele 96.27% ixabiso layo ithiyori, kunye nemveliso yamandla kazibuthe enkulu BH ifikelele kwi-91.5% yethiyori yayo. ixabiso.Nangona kunjalo, amandla okunyanzelisa afikelele kuphela kwi-12% yexabiso layo lethiyori.Inamandla amakhulu okuphucula amandla ayo okunyanzeliswa, kusekho ukwanda okukhulu kwendawo.Xinfeng umazibuthe usebenze nzima kule.
Okokuqala, ukunyanzeliswa kwemagneti kunokuphuculwa ngokufanelekileyo ngokutshintsha i-Nd kunye ne-Dy kunye ne-Tb.Nangona kunjalo, kwimithombo yesinyithi yomhlaba enqabileyo, i-Dy kunye ne-Tb zincinci kumxholo kwaye zibiza, kwaye i-Dy kunye ne-Tb zinokongezwa kuphela kwi-trace values.Okwesibini, ukongezwa kwezinye izinto zetsimbi ezifana ne-AL, Nb, Ga, Ti, Zr, Mo, njl., xa ezi zinto zingena kwi-crystal, i-microstructure kunye nokusebenza kwenkqubo ngokucacileyo kuphuculwe, kwaye kwandisa ukunyanzeliswa kwemagnethi.Okwesithathu, ukunyanzeliswa kwemagneti kunokuphuculwa ngokufanelekileyo ngokudibanisa izinto kunye nokusebenzisa ubushushu obuphantsi be-sintering okanye indlela ye-alloy ephindwe kabini ukunciphisa ubungakanani bekristale.
Okulandelayo, Xinfeng umazibuthe uya kuqhubeka ukusebenza nzima ukuphucula imveliso yamandla kazibuthe enkulu ye NdFeb sintered, kwaye rhoqo ukubonelela iimveliso ezingcono kubathengi.
Ixesha lokuposa: Jul-12-2018