Neodymium (Nd-Fe-B) maginetimagineti epasi akajairika anoumbwa neodymium (Nd), iron (Fe), boron (B), uye shanduko simbi. Ivo vane hunyanzvi hwekuita mumashandisirwo nekuda kwesimba ravo remagineti, inova 1.4 teslas (T), unit of magineti induction kana flux density.
Neodymium magineti akaiswa mumapoka maererano nemagadzirirwo aanoitwa, ayo anocherwa kana kusungwa. Iwo akave anonyanya kushandiswa magineti kubva pakukura kwavo muna 1984.
Mumamiriro ayo echisikigo, neodymium ndeye ferromagnetic uye inogona chete kuve nemagnetized patembiricha yakaderera zvakanyanya. Kana yasanganiswa nedzimwe simbi, senge iron, inogona kuve nemagnetized patembiricha yekamuri.
Iwo magineti kugona kweneodymium magineti anogona kuonekwa mumufananidzo uri kurudyi.
Mhando mbiri dzemagineti epasi asingawanzo ndeye neodymium uye samarium cobalt. Magineti eneodymium asati awanikwa, magineti esamarium cobalt ndiwo ainyanya kushandiswa asi akatsiviwa neodymium magineti nekuda kwekudhura kwekugadzira masarium cobalt magineti.
Ndezvipi Zvivakwa zveNeodymium Magnet?
Hunhu hukuru hwemagineti neodymium ndiko kusimba kwaakaita pakukura kwawo. Iyo magineti yemagineti yeneodymium magineti inoitika kana magineti akaiswa kwairi uye iyo atomic dipoles inowirirana, inova iyo magineti hysteresis loop. Kana iyo magnetic field yabviswa, chikamu chekugadzirisa chinoramba chiri mune magnetized neodymium.
Magiredhi emagineti neodymium anoratidza simba ravo remagineti. Kukwira kwenhamba yegiredhi, ndiko kusimba kwesimba remagineti. Nhamba dzinouya kubva kune yavo zvivakwa zvinoratidzwa se mega gauss Oersteds kana MGOe, inova nzvimbo yakasimba pane yayo BH Curve.
Iyo "N" giredhi chiyero chinotanga paN30 ichienda kuN52, kunyangwe magineti eN52 asingawanzo kushandiswa kana kungoshandiswa muzviitiko zvakakosha. Nhamba ye "N" inogona kuteverwa nemavara maviri, akadai seSH, anoratidza kumanikidza kwemagneti (Hc). Iyo yakakwirira iyo Hc, iyo yakakwirira tembiricha iyo neo magineti inogona kutsungirira isati yarasikirwa nekubuda kwayo.
Chati iri pazasi inodonongodza magiredhi akajairika emagineti eneodymium ari kushandiswa parizvino.
Izvo Zvivakwa zveNeodymium Magnets
Remanence:
Kana neodymium yaiswa mune magineti, iyo atomic dipoles inobatana. Mushure mekubviswa kubva kumunda, chikamu cheiyo alignment inoramba ichigadzira magnetized neodymium. Remanence ndiyo flux density inosara kana munda wekunze uchidzoka kubva paukoshi hwesaturation kuenda ku zero, inova ndiyo yasara magineti. Iyo yakakwirira remanence, iyo yakakwirira iyo flux density. Neodymium magineti ane flux density ye1.0 kusvika 1.4 T.
Iyo remanence yeneodymium magineti inosiyana zvichienderana nekuti anogadzirwa sei. Sintered neodymium magineti ane T ye1.0 kusvika 1.4. Bonded neodymium magineti ane 0.6 kusvika 0.7 T.
Coercivity:
Mushure mekunge neodymium yaitwa magineti, haidzokeri kune zero magnetization. Kuti idzoke kune zero magnetization, inofanirwa kudzoserwa kumashure nemunda wakatarisana, unonzi coercivity. Ichi chivakwa chemagineti kugona kwayo kumira nesimba rekunze remagineti pasina kubviswa magineti. Coercivity ndiwo chiyero chekusimba kunodiwa kubva kune magineti kudzikisa magineti ekudzoka ku zero kana kuramba kwemagneti kuti iite demagnetized.
Coercivity inopimwa mu oersted or ampere units akanzi Hc. Iko kumanikidza kweneodymium magineti kunoenderana nekuti anogadzirwa sei. Sintered neodymium magineti ane coercivity kubva 750 Hc kusvika 2000 Hc, nepo bonded neodymium magineti ane coercivity kubva 600 Hc kusvika 1200 Hc.
Energy Product:
Kuwanda kwesimba remagineti kunoratidzwa nekukosha kukuru kweiyo flux density nguva iyo magineti simba, inova huwandu hwemagineti inoyerera pachikamu chenzvimbo. Iwo mayunitsi anoyerwa mu teslas ye SI mayuniti uye Gauss ayo ane chiratidzo che flux density ichiva B. Magnetic flux density ihuwandu hwekunze kwemagineti H uye magineti emuviri magineti polarization J mumayuniti eSI.
Magineti echigarire ane B munda mukati mawo uye nharaunda. Kutungamira kwesimba reB munda kunonzi kune mapoinzi mukati nekunze kwemagineti. Tsono yekambasi iri mundima B yemagneti inonongedza yakananga kumunda.
Iko hakuna nzira iri nyore yekuverenga flux density yemagineti maumbirwo. Kune mapurogiramu epakombiyuta anogona kuita kuverenga. Mafomula akareruka anogona kushandiswa kune mashoma akaomarara geometries.
Kusimba kwesimba remagineti kunoyerwa muGauss kana Teslas uye ndicho chiyero chakajairwa chesimba remagineti, chinova chiyero chehuwandu hwemagineti ayo. Gauss mita inoshandiswa kuyera kuyerera kwemagneti. Iyo flux density yeneodymium magineti i6000 Gauss kana zvishoma nekuti ine mutsara wakatwasuka demagnetization curve.
Curie Temperature:
Iko tembiricha ye curie, kana curie point, ndiyo tembiricha iyo magineti zvinhu zvine shanduko mune yavo magineti uye inova paramagnetic. Mune magineti simbi, maatomu emagnetic anobatanidzwa munzira imwechete uye anosimbisa imwe neimwe magnetic field. Kusimudza tembiricha ye curie kunoshandura marongero emaatomu.
Kumanikidza kunowedzera sezvo tembiricha inowedzera. Kunyangwe magineti e neodymium aine kumanikidza kwakakwira patembiricha yekamuri, inodzika sezvo tembiricha inokwira kusvika yasvika patembiricha yecurie, inogona kutenderedza 320° C kana 608° F.
Zvisinei nekuti magineti neodymium akasimba sei, tembiricha yakanyanyisa inogona kushandura maatomu avo. Kugara kwenguva refu kune tembiricha yepamusoro kunogona kuita kuti varasikirwe zvachose nemagineti, iyo inotanga pa80° C kana 176° F.
Neodymium Magnets Anogadzirwa Sei?
Iwo maviri maitiro anoshandiswa kugadzira neodymium magineti ari sintering uye kubatana. Zvimiro zvemagineti akapedzwa zvinosiyana zvichienderana nekuti anogadzirwa sei ne sintering iriyo yakanakisa nzira mbiri idzi.
Magadzirirwo eNeodymium Magnets
Sintering
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Kunyunguduka:
Iyo Neodymium, Iron uye Boron inoyerwa kunze uye inoiswa muvacuum induction vira kuti iite alloy. Zvimwe zvinhu zvinowedzerwa kumagiredhi chaiwo, akadai secobalt, mhangura, gadolinium, uye dysprosium kubatsira nekupokana nekuora. Kupisa kunogadzirwa nemagetsi eddy currents mune vacuum kuchengetedza hutachiona kunze. Iyo neo alloy musanganiswa wakasiyana kune yega yega mugadziri uye giredhi reneodymium magineti.
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Hupfu:
Iyo yakanyungudutswa yakanyungudutswa inotonhorera uye inoumbwa kuita ingots. Iyo ingots ijeti inogayiwa mu nitrogen uye argon mamiriro ekugadzira micron-saizi poda. Iyo neodymium poda inoiswa muhopi yekutsikirira.
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Kudzvanya:
Iyo poda inomanikidzwa mukufa yakakura zvishoma kudarika chimiro chaidiwa nemaitiro anozivikanwa seanogumbura pakupisa kweanenge 725 ° C. Chimiro chikuru chefa chinobvumira shrinkage panguva yekupisa. Panguva yekutsikirira, zvinhu zvinoratidzwa kune magnetic field. Inoiswa muchidimbu chechipiri kuti itsindirwe kuita chimiro chakapamhama kuti ienzanise iyo magnetization inoenderana negwara rekudzvanya. Dzimwe nzira dzinosanganisira zvigadziriso zvekugadzira magineti minda panguva yekudzvanya kuenzanisa zvimedu.
Iyo magineti yakadzvanywa isati yaburitswa, inogamuchira demagnetizing pulse kuisiya isina magineti kuti igadzire magineti akasvibira, ayo anoputsika nyore uye ane hurombo hwemagineti.
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Sintering:
Sintering, kana kuti frittage, inobatanidza uye inoita magineti egirini ichishandisa kupisa pazasi pekunyungudika kwayo kuti ipe magineti ayo ekupedzisira. Iyo nzira inonyatso kutariswa mune inert, isina oxygen mhepo. Oxides inogona kuparadza kuita kweneodymium magineti. Inomanikidzwa patembiricha inosvika 1080 ° C asi pazasi pekunyungudika kwayo kumanikidza zvidimbu kuti zvibatane.
Kudzima kunoshandiswa kukurumidza kutonhodza magineti uye kuderedza zvikamu, izvo zvakasiyana-siyana zvealloy izvo zvisina hurombo hwemagineti.
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Machining:
Sintered magineti anogadzikwa achishandisa madhaimondi kana waya yekucheka maturusi kuti aumbe iwo kune kwakaringana kushivirira.
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Plating uye coating:
Neodymium oxidize nekukurumidza uye inokonzeresa corrosion, iyo inogona kubvisa magineti yayo. Sedziviriro, anonamirwa nepurasitiki, nickel, mhangura, zingi, tini, kana kuti mamwe mapeji.
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Magnetization:
Kunyangwe magineti iine kwainoenda kunoita magineti, haina magineti uye inofanirwa kuratidzwa kwenguva pfupi kune yakasimba magineti, inova coil yewaya yakatenderedza magineti. Iyo magnetizing inosanganisira capacitors uye yakakwirira voltage kuburitsa yakasimba ikozvino.
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Kuongorora Kwekupedzisira:
Digital yekuyera mapurojekita inosimbisa zviyero uye x-ray fluorescence tekinoroji inosimbisa ukobvu hweplating. Iyo yekupfeka inoedzwa mune dzimwe nzira kuve nechokwadi chemhando yayo uye simba. Iyo BH curve inoedzwa neiyo hysteresis graph kusimbisa kuzara kwakazara.
Bonding
Bonding, kana compression bonding, inzira yekutsikirira iyo inoshandisa musanganiswa we neodymium poda uye epoxy kusunga mumiririri. Musanganiswa ndeye 97% magineti uye 3% epoxy.
Iyo epoxy uye neodymium musanganiswa inotsikirirwa muchitsina kana extruded uye inorapwa muchoto. Sezvo musanganiswa uchidzvanywa mufa kana kuiswa kuburikidza neextrusion, magineti anogona kuumbwa kuita akaomarara maumbirwo uye zvigadziriso. Iyo compression bonding process inogadzira magineti ane yakasimba kushivirira uye haidi echipiri mashandiro.
Compression bonded magineti is isotropic uye inogona kuve nemagnetized mune chero nzira, iyo inosanganisira akawanda-polar masisitimu. Iyo epoxy binding inoita kuti magineti ave nesimba rekugayiwa kana kuiswa lathed asi kuti asaboorwa kana kubaiwa.
Radial Sintered
Radially oriented neodymium magineti ndiwo magineti matsva pamusika wemagineti. Iyo nzira yekugadzira radial yakamisikidzwa magineti yave ichizivikanwa kwemakore mazhinji asi yanga isingadhure. Zvichangoburwa tekinoroji zvakagadziridza maitiro ekugadzira achiita kuti radially oriented magineti zvive nyore kugadzira.
Iwo matatu maitiro ekugadzira radial aligned neodymium magineti ndeye anisotropic pressure molding, inopisa kudzvanya kumashure extrusion, uye radial inotenderera munda kurongeka.
Iyo sintering process inova nechokwadi chekuti hapana nzvimbo dzisina kusimba mumagineti chimiro.
Hunhu hwakasiyana hwemagineti akaiswa radially igwara remagineti, iro rinotambanukira rakatenderedza perimeter yemagineti. Goli rekumaodzanyemba remagineti riri mukati memhete, nepo danda rekuchamhembe riri padenderedzwa rayo.
Neodymium magineti anotariswa zvakanyanya anisotropic uye ane magineti kubva mukati memhete kuenda kunze. Radial magnetization inowedzera mhete dzemagineti simba uye inogona kuumbwa kuita akawanda mapatani.
Radial neodymium mhete magineti anogona kushandiswa kune synchronous motors, stepping motors, uye DC brushless mota dzemotokari, komputa, zvemagetsi, uye maindasitiri ekutaurirana.
Zvishandiso zveNeodymium Magnets
Magnetic Separation Conveyors:
Muchiratidzo chiri pazasi, bhandi rekutakura rakafukidzwa neneodymium magineti. Magineti akarongwa nemapango anochinjana akatarisa kunze izvo zvinovapa simba remagineti kubata. Zvinhu zvisina kukwezvwa kumagineti zvinodonha, ukuwo ferromagnetic zvinhu zvinodonhedzwa mubhini rekuunganidza.
Hard disk drives:
Mahard drive ane matiraki uye zvikamu zvine magineti maseru. Iwo maseru ane magnetized kana data rakanyorwa kune drive.
Electric Guitar Pickups:
Gitare remagetsi rinonzwa tambo dzinozunguzika uye rinoshandura chiratidzo kuita magetsi asina simba kuti atumire kune amplifier uye sipika. Magitare emagetsi akasiyana neacoustic guitar anokwidziridza ruzha rwawo mubhokisi risina mhango pasi petambo. Magitare emagetsi anogona kuve simbi yakasimba kana huni ine ruzha rwawo rwakakwidziridzwa pamagetsi.
Kurapa Mvura:
Neodymium magineti anoshandiswa mukurapa kwemvura kuderedza kuyera kubva mumvura yakaoma. Mvura yakaoma ine yakawanda mineral content ye calcium uye magnesium. Nemagineti yekurapa mvura, mvura inopfuura nepamagineti kuti itore kuyera. Iyo tekinoroji haina kugamuchirwa zvachose seyakashanda. Kwave nemigumisiro inokurudzira.
Reed Switch:
Shanduko yetsanga ishanduko yemagetsi inoshandiswa nemagnetic field. Vane maviri ekubatanidza uye tsanga dzesimbi muhamvuropu yegirazi. Mabatirwo e switch anovhurwa kusvika aitwa nemagnet.
Reed switching anoshandiswa mumakanika masisitimu semasensa epadhuze mumagonhi nemafafitera emagetsi maalarm system uye tamper proofing. Mumalaptops, machinjiro etsanga anoisa laptop mumodhi yekurara kana chivharo chavharwa. Pedal kiibhodhi dzenhengo dzepombi dzinoshandisa machinjiko etsanga ari muchivharo chegirazi kune vanobatika kuti vadzivirire kubva kutsvina, guruva, nemarara.
Sewing Magnets:
Neodymium sew mumagineti inoshandiswa kuita magineti clasps pahomwe, zvipfeko, nemafolder kana mabhainda. Magineti ekusonesa anotengeswa ari maviri magineti rimwe richiva a+ uye rimwe ri-.
Denture Magnets:
Mazino emazino anogona kubatwa nemagineti akaiswa mushaya yemurwere. Magetsi anodzivirirwa kubva pakuora kubva mumate nesimbi isina tsvina. Ceramic titanium nitride inoshandiswa kudzivirira abrasion uye kuderedza kuratidzwa nickel.
Magnetic Doorstops:
Magnetic doorstops i mechanical stop inobata gonhi rakavhurika. Mukova unovhurika, unobata magineti, uye unoramba wakavhurika kusvikira gonhi rabviswa pamagnet.
Jewelry Clasp:
Magnetic jewelry clasps anouya nehafu mbiri uye anotengeswa sepairi. Mahafu ane magineti muimba yezvinhu zvisiri magineti. Chitsiko chesimbi kumagumo chinosungirira cheni yebracelet kana necklace. Dzimba dzemagineti dzinokwana mukati meimwe neimwe kudzivirira kufamba-kune-kudivi kana kugera kufamba pakati pemagineti kuti ipe kubata kwakasimba.
Vatauri:
Vatauri vanoshandura simba remagetsi kuita magetsi emagetsi kana kufamba. Iyo mechanic simba inomanikidza mweya uye inoshandura mafambiro kuita kurira kwesimba kana ruzha rwekumanikidza. Mhepo yemagetsi, inotumirwa kuburikidza newaya coil, inogadzira simba remagineti mune magineti akabatanidzwa kune mukurukuri. Inzwi coil inokwezvwa uye inodzingwa nemagineti isingaperi, iyo inogadzira koni, iyo inzwi coil inonamirwa, inofamba ichienda mberi neshure. Kufamba kwekoni kunogadzira masaisai ekumanikidza anonzwika seruzha.
Anti-Lock Brake Sensors:
Mune anti-lock mabhureki, neodymium magineti akaputirwa mukati memhangura makoiri mumasensa ebhureki. Anti-lock braking system inodzora chiyero chevhiri kumhanyisa uye kudzika-inomhanyisa nekudzora mutsara wekumanikidza unoiswa kune brake. Iwo masaini ekudzora, anogadzirwa neanodzora uye akaiswa kune brake pressure modulating unit, anotorwa kubva kumavhiri ekumhanya sensors.
Mazino ari pa sensor ring anotenderedza kupfuura iyo magineti sensor, izvo zvinokonzeresa kudzoreredzwa kwe polarity yesimba remagineti inotumira frequency chiratidzo kune angular velocity ye axle. Kusiyanisa kwechiratidzo ndiko kukurumidza kwemavhiri.
Neodymium Magnet Kufunga
Semagineti ane simba uye akasimba kwazvo pasi pano, neodymium magineti anogona kuve nekukuvadza kwakashata. Zvakakosha kuti dzibatwe nemazvo nekufunga kukuvadza kwadzinogona kukonzera. Pazasi pane tsananguro dzezvimwe zvakashata zvinokonzerwa neodymium magineti.
Negative Effects yeNeodymium Magnets
Kukuvara Kwemuviri:
Neodymium magineti anogona kusvetuka pamwe chete uye kupinza ganda kana kukonzera kukuvara kwakanyanya. Vanogona kusvetuka kana kusvetukira pamwe chete kubva pamasendimita akawanda kusvika pamamita akati wandei. Kana munwe uri munzira, unogona kuputsika kana kukuvadzwa zvakanyanya. Neodymium magineti ane simba kupfuura mamwe marudzi emagineti. Simba rinoshamisa riri pakati pavo rinogona kushamisa.
Kuparara kweMagineti:
Magineti eNeodymium ane brittle uye anogona kusvuura, chip, kutsemuka kana kupwanya kana akarovera pamwe chete, izvo zvinotumira zvidimbu zvidiki zvesimbi zvakapinza zvichibhururuka nekumhanya kukuru. Magineti eNeodymium anogadzirwa nechinhu chakaoma, chine brittle. Pasinei nekugadzirwa kwesimbi, uye kuva nekupenya, chitarisiko chesimbi, hachina kusimba. Dziviriro yemaziso inofanira kupfekwa pakuzvibata.
Ramba Kure Nevana:
Neodymium magineti haisi matoyi. Vana havafaniri kubvumirwa kuzvibata. Zvidiki zvinogona kuva njodzi yekukachidza. Kana magineti akawanda akamedzwa, anonamatira kune mumwe nemumwe kuburikidza nemadziro emukati, izvo zvinokonzeresa hutano hwakanyanya, hunoda kuvhiyiwa nekukurumidza.
Ngozi kune Pacemakers:
Simba remumunda regumi gauss pedyo ne pacemaker kana defibrillator rinogona kupindirana nemudziyo wakaiswa. Neodymium magineti anogadzira akasimba magineti minda, anogona kukanganisa pacemaker, ICDs, uye akaisirwa mishonga yekurapa. Midziyo yakawanda yakasimwa inodzima kana yava pedyo nemagnetic field.
Magnetic Media:
Iyo yakasimba magineti minda kubva kune neodymium magineti inogona kukuvadza magineti senge floppy disks, kiredhiti makadhi, magineti ID makadhi, makaseti matepi, matepi evhidhiyo, kukuvadza ekare terevhizheni, VCRs, komputa monitors, uye CRT kuratidza. Hazvifanirwe kuiswa pedyo nemidziyo yemagetsi.
GPS uye Smartphones:
Magnetic minda inovhiringidza makampasi kana maginetimita uye makompasi emukati emafoni uye GPS zvishandiso. Iyo International Air Transport Association uye US Federal mitemo nemirairo inovhara kutumira kwemagineti.
Nickel Allergy:
Kana iwe uine nickel allergy, immune system inokanganisa nickel semupinyi ane njodzi uye anogadzira makemikari ekurwisa nawo. Alergic reaction kune nickel kutsvuka uye kuputika kweganda. Nickel allergies inowanzoitika muvakadzi nevasikana. Vanenge, 36 muzana yevakadzi, pasi pemakore gumi nemasere, vane nickel allergy. Nzira yekudzivirira nickel allergy ndeyekudzivisa nickel yakavharwa neodymium magineti.
Demagnetization:
Magineti eNeodymium anochengetedza kushanda kwawo kusvika pa80° C kana 175° F. Tembiricha yaanotanga kurasikirwa nekushanda kwawo inosiyana negiredhi, chimiro, uye mashandisirwo.
Inobvira moto:
Neodymium magineti haafanire kudhiriwa kana kugadzirwa. Hupfu nehupfu zvinogadzirwa nekukuya zvinobvira moto.
Corrosion:
Neodymium magineti anopedzwa neimwe nzira yekupfeka kana plating kuvadzivirira kubva kune zvinhu. Hadzipindire mvura uye dzinoita ngura kana kuita ngura kana dzaiswa munzvimbo dzakanyorova kana dzakanyorova.
Mitemo uye Mitemo yeNeodymium Magnet Kushandisa
Kunyangwe neodymium magineti ane simba remagineti, ane brittle uye anoda kubatwa kwakakosha. Masangano akati wandei ekutarisa maindasitiri akagadzira mirau ine chekuita nekubata, kugadzira, uye kutumira kweneodymium magineti. Tsanangudzo pfupi yezvishoma zvemirairo yakanyorwa pazasi.
Mitemo uye Mitemo yeNeodymium Magnets
American Society yeMechanical Engineers:
IAmerican Society of Mechanical Engineers (ASME) ine zviyero zvePazasi-The-Hook Kusimudza Devices. Standard B30.20 inoshanda pakuisa, kuongorora, kuyedza, kugadzirisa uye kushanda kwemidziyo yekusimudza, iyo inosanganisira kusimudza magineti uko mushandisi anoisa magineti pamutoro uye anotungamira mutoro. ASME mwero BTH-1 inoshandiswa pamwe chete neASME B30.20.
Hazard Analysis uye Critical Control Points:
Hazard Analysis uye Critical Control Points (HACCP) inzira inozivikanwa pasi rese yekudzivirira njodzi yekudzivirira. Iyo inoongorora kuchengetedzwa kwechikafu kubva kune biological, makemikari, uye nenjodzi dzemuviri nekuda kuzivikanwa uye kutonga kwenjodzi pane dzimwe nzvimbo mukugadzira maitiro. Inopa certification yemidziyo inoshandiswa munzvimbo dzekudya. HACCP yakaona uye yakasimbisa mamwe magineti ekuparadzanisa anoshandiswa muindasitiri yechikafu.
United States Department of Agriculture:
Magnetic kupatsanura michina yakabvumidzwa neUnited States Department of Agriculture Agricultural Marketing Service sekutevedzera kushandiswa nezvirongwa zviviri zvekugadzira chikafu:
- Dairy Equipment Ongororo Chirongwa
- Nyama uye Huku Equipment Ongororo Chirongwa
Certifications yakavakirwa pamazinga maviri kana nhungamiro:
- Sanitary Dhizaini uye Kugadzirwa kweDairy Processing Equipment
- Sanitary Dhizaini uye Kugadzirwa kweNyama uye Huku Kugadzira Equipment inosangana neNSF/ANSI/3-A SSI 14159-1-2014 Hutsanana Zvinodiwa.
Kurambidza Kushandiswa Kwezvinhu Zvinokuvadza:
Kurambidzwa kweKushandiswa kweHazardous Substances (RoHS) mitemo inodzikamisa kushandiswa kwe lead, cadmium, polybrominated biphenyl (PBB), mercury, hexavalent chromium, uye polybrominated diphenyl ether (PBDE) flame retardants mumidziyo yemagetsi. Sezvo neodymium magineti achigona kuve nengozi, RoHS yakagadzira zviyero zvekubata nekushandisa kwavo.
International Civil Aviation Organisation:
Magnets akatsunga kuve ane njodzi yakanaka kune inotakura kunze kweContinental United States kuenda kune dzimwe nyika. Chero zvinhu zvakaputirwa, kuti zvitumirwe nemhepo, zvinofanirwa kunge zvine simba remagineti re0.002 Gauss kana kupfuura chinhambwe chemamita manomwe kubva pane chero nzvimbo iri pamusoro pepasuru.
Federal Aviation Administration:
Mapakeji ane magineti ari kutumirwa nemhepo anofanirwa kuyedzwa kuti asangane nemiyero yakadzikwa. Magnet mapakeji anofanirwa kuyera isingasviki 0.00525 gauss pamamita gumi nemashanu kubva pasuru. Magineti ane simba uye akasimba anofanirwa kuve neimwe nzira yekudzivirira. Kune akawanda mirau uye zvinodiwa zvinofanirwa kusangana nekutumira magineti nemhepo nekuda kwenjodzi dzinogona kuitika.
Kurambidzwa, Kuongorora, Mvumo yeMakemikari:
Restriction, Evaluation, and Authorization of Chemicals (REACH) isangano repasi rose iro riri chikamu cheEuropean Union. Inogadzirisa uye inovandudza zviyero zvezvinhu zvine ngozi. Iine magwaro akati wandei anotsanangura mashandisirwo akafanira, kubata, uye kugadzira magineti. Zvizhinji zvezvinyorwa zvinoreva kushandiswa kwemagineti mumidziyo yekurapa uye zvinhu zvemagetsi.
Mhedziso
- Neodymium (Nd-Fe-B) magineti, anozivikanwa seneo magineti, akajairika magineti epasi anoumbwa neodymium (Nd), iron (Fe), boron (B), uye shanduko simbi.
- Iwo maviri maitiro anoshandiswa kugadzira neodymium magineti ari sintering uye kubatana.
- Neodymium magineti ave anonyanya kushandiswa pamhando dzakawanda dzemagineti.
- Iyo magineti yemagineti yeneodymium magineti inoitika kana magineti akaiswa kwairi uye iyo atomic dipoles inowirirana, inova iyo magineti hysteresis loop.
- Neodymium magineti anogona kugadzirwa chero saizi asi chengetedza simba ravo rekutanga remagineti.
Nguva yekutumira: Jul-11-2022