Kutshanje, njengoko itekhnoloji iphuhlisa ukuya kwisantya esiphezulu kunye nesantya esiphezulu, ilahleko yangoku yeemagnethi ibe yingxaki enkulu. Ingakumbi iNeodymium Iron Boron(NdFeB) kunye neSamarium Cobalt(SmCo) iimagnethi, zichatshazelwa lula bubushushu. Ilahleko yangoku yeeddy ibe yingxaki enkulu.
Le misinga yeeddy ihlala ikhokelela ekuveliseni ubushushu, emva koko ukuthotywa kokusebenza kweenjini, iijenereyitha, kunye nezinzwa. Itekhnoloji ye-Anti-eddy yangoku yeemagnethi ihlala icinezela isizukulwana se-eddy yangoku okanye icinezela intshukumo yangoku.
"Amandla kaMagnet" aphuhliswe itekhnoloji ye-Anti-eddy-yangoku ye-NdFeB kunye nemagnethi ye-SmCo.
I-Eddy Currents
Imisinga ye-Eddy iveliswa kwizinto zokuqhuba ezikwindawo yombane etshintshanayo okanye imagnethi etshintshanayo. Ngokomthetho kaFaraday, iindawo ezitshintshanayo zemagnethi zivelisa umbane, yaye ngokuphambanayo. Kwishishini, lo mgaqo usetyenziswa kwi-metallurgical melting. Ngokusebenzisa i-medium-frequency induction, izinto eziphathekayo kwi-crucible, ezifana ne-Fe kunye nezinye izinyithi, zikhuthazwa ukuba zivelise ukushisa, kwaye ekugqibeleni izinto eziqinileyo ziyancibilika.
I-resistivity yemagnethi ye-NdFeB, imagnethi ye-SmCo okanye imagnethi ye-Alnico ihlala iphantsi kakhulu. Kuboniswe kwitheyibhile yoku-1. Ke ngoko, ukuba ezi magnethi zisebenza kwizixhobo ze-electromagnetic, intsebenziswano phakathi kwemagnethi eguquguqukayo kunye nezixhobo eziqhubayo zenza imisinga yeeddy ngokulula kakhulu.
Itheyibhile1 Ukuxhathisa kweemagnethi zeNdFeB, iimagnethi zeSmCo okanye imagnethi yeAlnico
| Iimagnethi | Rubunzima (mΩ·i-cm) |
| Alnico | 0.03-0.04 |
| SmCo | 0.05-0.06 |
| NdFeB | 0.09-0.10 |
NgokoMthetho kaLenz, imisinga ye-Eddy eveliswe kwi-NdFeB kunye nemagnethi ye-SmCo, ikhokelela kwiziphumo ezininzi ezingathandekiyo:
● Ukulahlekelwa Amandla: Ngenxa ye-eddy currents, inxalenye yamandla kazibuthe iguqulwa ibe ngubushushu, inciphisa ukusebenza kakuhle kwesixhobo. Ngokomzekelo, ilahleko yentsimbi kunye nobhedu ngenxa ye-eddy yangoku iyona nto iphambili yokusebenza kweemoto. Kumxholo wokunciphisa ukukhutshwa kwekhabhoni, ukuphucula ukusebenza kweemoto kubaluleke kakhulu.
● Ukuveliswa kobushushu kunye ne-Demagnetization: Zombini iimagnethi ze-NdFeB kunye ne-SmCo zinobushushu obuphezulu bokusebenza, obuyiparameter ebalulekileyo yeemagnethi ezisisigxina. Ubushushu obuveliswa yilahleko yangoku yeeddy bubangela ukunyuka kweqondo lobushushu lemagnethi. Nje ukuba ubushushu bokusebenza bugqithiswe, i-demagnetization iya kwenzeka, eya kuthi ekugqibeleni ikhokelele ekucuthekeni komsebenzi wesixhobo okanye iingxaki ezinzulu zokusebenza.
Ngokukodwa emva kophuhliso lweemotor ezinesantya esiphezulu, ezinje ngemagnethi ethwala imagnethi kunye neemotor ezithwala umoya, ingxaki ye-demagnetization ye-rotors iye yabonakala ngakumbi. Umzobo we-1 ubonisa i-rotor ye-motor ephethe umoya kunye nesantya se30,000RPM. Ekugqibeleni iqondo lobushushu lenyuka malunga500°C, okukhokelela kwi-demagnetization yeemagnethi.
Isazobe soku1. I-a kunye no-c ngumzobo wemagnethi kunye nokuhanjiswa kwe-rotor eqhelekileyo, ngokulandelelanayo.
b kunye no-d ngumzobo wemagnethi kunye nosasazo lwerotor engasebenziyo, ngokulandelelanayo.
Ngaphaya koko, iimagnethi zeNdFeB zineqondo lobushushu elisezantsi leCurie (~320°C), nto leyo ibenza bangabi nazibuthe. Amaqondo obushushu ecurie yeemagnethi ze-SmCo, aphakathi kwe-750-820°C. I-NdFeB kulula ukuchatshazelwa yi-eddy yangoku kune-SmCo.
Anti-Eddy yangoku Technologies
Iindlela ezininzi ziye zaphuhliswa ukunciphisa i-eddy currents kwi-NdFeB kunye neemagnethi ze-SmCo. Le ndlela yokuqala kukutshintsha ukubunjwa kunye nokwakheka kweemagnethi ukunyusa ukuxhathisa. Indlela yesibini ehlala isetyenziselwa ubunjineli ukuphazamisa ukubunjwa kwee-loops ezinkulu zangoku.
1.Ukuphucula ukuxhathisa kwemagnethi
Gabay et.al zongezwe CaF2, B2O3 ukuba SmCo iimagnethi ukuphucula resistivity, leyo wan iphuculwe ukusuka 130 μΩ cm ukuya 640 μΩ cm. Nangona kunjalo, i(BH)max kunye neBr yehle kakhulu.
2. UkuLamination of Magnets
Ukukhanyisa iimagnethi, yeyona ndlela isebenzayo kubunjineli.
Oomazibuthe banqunyulwa bangamaleko amancinci baze badityaniswe ngeglu. Ujongano phakathi kwamaqhekeza amabini omazibuthe yiglue ekhuselayo. Indlela yombane yee-eddy currents iphazamisekile. Le teknoloji isetyenziswa ngokubanzi kwiinjini ezinesantya esiphezulu kunye neejeneretha. "Amandla kaMagnet" aphuhliswe uninzi lweetekhnoloji zokuphucula ukuxhathisa kweemagnethi. https://www.magnetpower-tech.com/high-electrical-impedance-eddy-current-series-product/
Iparamitha yokuqala ebalulekileyo yi-resistivity. Ukumelana ne-laminated NdFeB kunye nemagnethi ye-SmCo eveliswa yi-"Magnet Power" ingaphezulu kwe-2 MΩ·cm. Ezi magnethi zinokuthintela ngokubonakalayo ukuqhuba kwangoku kwimagnethi kwaye emva koko zicinezele isizukulwana sobushushu.
Iparamitha yesibini bubunzima beglu phakathi kwamaqhekeza emagnethi. Ukuba ubukhulu bomgangatho weglue buphezulu kakhulu, kuya kubangela ukuba umthamo wemagnethi unciphise, okukhokelela ekunciphiseni kwe-flux magnetic jikelele. "Amandla kaMagnet" anokuvelisa iimagnethi ezilayitiweyo ezinobunzima beglue layer ye-0.05mm.
3. Ukugquma ngeZixhobo zokuXhobisa ngokuPhezulu
Iingubo zokugquma zisoloko zisetyenziswa kumphezulu weemagnethi ukunyusa ukuxhathisa kwemagnethi. Ezi zogquma zisebenza njengemiqobo, ukunciphisa ukuhamba kwemisinga yeeddy kumphezulu wemagnethi. Njenge-epoxy okanye i-parylene, iingubo ze-ceramic zihlala zisetyenziswa.
Iinzuzo zeTekhnoloji yangoku ye-Anti-Eddy
Itekhnoloji yangoku ye-Anti-eddy iyimfuneko kwizicelo ezininzi ezinemagnethi ze-NdFeB kunye ne-SmCo. Kuquka:
● Hi-igh-speed motors: Kwiimoto ezihamba ngesantya esiphezulu, oku kuthetha ukuba isantya siphakathi kwe-30,000-200,000RPM, ukucinezela i-eddy yangoku kunye nokunciphisa ubushushu yimfuno ephambili. Umzobo 3 ubonisa ubushushu uthelekiso yesiqhelo SmCo umazibuthe kunye anti-eddy yangoku SmCo in 2600Hz. Xa ubushushu besiqhelo SmCo umazibuthe (ekhohlo ebomvu enye) idlula 300℃, iqondo lobushushu anti-eddy iimagnethi SmCo yangoku (ekunene bule one) ayidluli 150℃.
●Oomatshini beMRI: Ukunciphisa i-eddy currents kubalulekile kwi-MRI ukugcina ukuzinza kweenkqubo.
Itekhnoloji yangoku ye-Anti-eddy ibaluleke kakhulu ekuphuculeni ukusebenza kwemagnethi ye-NdFeB kunye ne-SmCo kwizicelo ezininzi. Ngokusebenzisa i-lamination, i-segmentation, kunye ne-coating technologies, ii-eddy currents zinokuncitshiswa kakhulu kwi-"Magnet Power". I-anti-eddy yangoku ye-NdFeB kunye nemagnethi ye-SmCo inokwenzeka ukuba isetyenziswe kwiinkqubo zanamhlanje zombane.
Ixesha lokuposa: Sep-23-2024
