About Hard Ferrite (Ceramic) Magnets
Maginito a Ceramic, omwe amadziwikanso kuti Ferrite Magnets, amakhala ndi zinthu monga sintered iron oxide ndi barium kapena strontium carbonate. Magnets a Ferrite amadziwika chifukwa cha mtengo wake wotsika mtengo, kukana bwino kwa dzimbiri, komanso kukhazikika kwa kutentha kwambiri mpaka 250 ° C. Ngakhale kuti maginito awo amasiyana kwambiri.NdFeB maginito, mtengo wawo ndi wotsika kwambiri chifukwa cha zotsika mtengo, zochulukirapo, komanso zopanda nzeru zomwe zimagwiritsidwa ntchito popanga maginitowa, kupanga maginito a ceramic okhazikika oyenera kupanga zazikulu.
Maginito a Ferrite amapangidwa ndi kuumba ufa wosakaniza pafupifupi 80% Fe2O3 ndi 20% mwina BaCo3 kapena SrO3. Pamodzi ndi kafukufuku wowonjezera, zowonjezera monga cobalt (Co) ndi lanthanum (La) zimaphatikizidwa kuti ziwongolere maginito. Ufa wonyezimira wobiriwira wobiriwira umayikidwa mkati mwa ng'anjo yoyendetsedwa ndi kutentha yomwe imatenthedwa ndi magetsi kapena malasha. Ngakhale maginito olimba a ferrite amakhala ndi maginito otsika, amasankhabe mainjiniya chifukwa cha zinthu zingapo monga kupezeka kwazinthu zambiri, mtengo wotsika kwambiri pakati pa mabanja amagetsi okhazikika, kachulukidwe kakang'ono, kukhazikika kwa chemistry, kutentha kwakukulu kogwira ntchito, ndi Curie. kutentha.
Gawo la Ferrite&mphete ya Ferrite Magnetndi chinthu chomwe chimagulitsidwa kwambiri ndipo chimakhala ngati mzati wofunikira wabizinesi kukampani yathu ikangoyamba kumene. Pozindikira kuchulukirachulukira kwa maginitowa, tayang'ana khama lathu pakulimbikitsa maginito amtundu wa arc segment hard ferrite ndipo tapeza luso lopanga bwino maginito kuti tigwiritse ntchito bwino komanso kukhathamiritsa zolinga zina. Tidakwanitsanso kupanga maginito olimba a ferrite okhala ndi mawonekedwe osakhazikika, ma geometry ovuta, komanso kulondola kwambiri. Maginito athu amphamvu a ferrite omwe amagulitsidwa tsopano amagwiritsidwa ntchito kwambiri mkati mwa ma motors, ma jenereta, masensa, zokuzira mawu, mita, ma relay, olekanitsa, ndi ntchito zina zosiyanasiyana pachitetezo, magalimoto, ma robotiki, zida zapakhomo, malo olumikizirana opanda zingwe, ndi zomera zamchere.
Chithunzi chofananira champhamvu yamagetsi pakati pa Ferrite Magnet ndi Neodymium Magnet--->
Maginito a Ferrite ali ndi mphamvu zochepa komanso kukana kwa dzimbiri ndipo nthawi zambiri amagwiritsidwa ntchito m'zigawo zomwe zimakhala ndi chitsulo chochepa cha carbon, chomwe chimatha kugwira ntchito kutentha pang'ono. Kupanga maginito a ceramic kumafuna kukanikiza ndi sintering. Chifukwa cha kuwonongeka kwawo, mawilo a diamondi ayenera kugwiritsidwa ntchito ngati akupera. Maginito a Ferrite amalumikizana bwino pakati pa mphamvu ya maginito ndi kutsika mtengo, pomwe mawonekedwe awo a brittleness amawongolera kukana kwawo kwa dzimbiri. Amakhalanso ndi mphamvu zolimbikitsira komanso kukana demagnetization, zomwe zimawapangitsa kukhala osankha pazachuma pazinthu wamba monga zoseweretsa, zamanja, ndi ma mota. Maginito osowa padziko lapansi amatha kusintha kwambiri kulemera kapena kukula kwake, pomwe ferrite yakhala chisankho chabwinoko pamagwiritsidwe omwe ali ndi mphamvu zochepa zamagetsi, monga mazenera amagetsi m'magalimoto, mipando, masiwichi, mafani, zowulutsira pazida zamagetsi, zida zina zamagetsi, ndi oyankhula ndi ma buzzers mu zida za electroacoustic.
Magnet ya Strontium Hard Ferrite & Barium Hard Ferrite Magnet
Maginito a barium hard ferrite maginito ndi maginito a strontium hard ferrite amafotokozedwa ndi njira za BaO-6Fe2O3 ndi SrO-6Fe2O3. Maginito a Strontium hard ferrite amapambana maginito a barium hard ferrite potengera maginito komanso mphamvu yokakamiza. Chifukwa chotsika mtengo, maginito a barium hard ferrite amagwiritsidwabe ntchito kwambiri. Kuti mukwaniritse maginito apamwamba ndikusunga ndalama, kusakaniza kwa strontium carbonate ndi barium carbonate nthawi zina kumagwiritsidwa ntchito popanga ferrite yolimba.
Kulumikizana mwachindunji ndi maginito a barium ferrite nthawi zambiri kumawoneka ngati kotetezeka, bola ngati kumagwiritsidwa ntchito molingana ndi njira zoyendetsera bwino. Komabe, ndikofunikira kuzindikira kuti barium ndi chinthu chapoizoni, ndipo kusamala kuyenera kutengedwa kuti tipewe kumeza kapena kutulutsa mpweya wa fumbi kapena tinthu tating'onoting'ono ta barium. Ndibwino kuti muzisamba m'manja nthawi zonse mutagwira maginito a barium ferrite ndikupewa zinthu zomwe zingapangitse tinthu tating'onoting'ono kapena fumbi. Ngati pali vuto lililonse kapena ngati pakufunika zambiri zachitetezo, tikulimbikitsidwa kutifunsa kapena malangizo okhudzana ndi chitetezo.
Mawonekedwe ndiDimensional Tolerancea Hard Ferrite maginito
Maginito olimba a ferrite amabwera m'mawonekedwe ndi mitundu yosiyanasiyana. Maonekedwe odziwika kwambiri ndi mphete, ma arcs, rectangles, ma discs, masilindala, ndi trapeziums. Maonekedwewa amatha kusinthidwa ndikuphatikizidwa kuti akwaniritse zosowa zenizeni. Kuphatikiza apo, maginito olimba a ferrite amapezeka m'mitundu yosiyanasiyana, monga isotropic ndi anisotropic. Maginito a isotropic ali ndi mawonekedwe ofanana a maginito mbali zonse, pomwe maginito a anisotropic ali ndi njira yomwe amakonda kwambiri. Izi zimalola makina enanso kutengera zomwe akufuna. Ndi kusinthasintha kwawo mawonekedwe ndi mtundu, maginito olimba a ferrite amagwiritsidwa ntchito kwambiri m'mafakitale monga zamagalimoto, zamagetsi, ndi mphamvu.
Asanasinthidwe, kupatuka kwa mawonekedwe a maginito olimba a ferrite kumayendetsedwa mkati mwa +/- 2%, ndipo kungokhala pansi ndi chida cha diamondi, kumatha kuwongoleredwa mpaka +/- 0.10mm. Kulolerana kwamasitomu kapena kuwongolera bwino mpaka +/-0.015mm ndikotheka koma kuyenera kukambitsirana. Maginito onyowa a anisotropic hard ferrite maginito nthawi zambiri amaperekedwa ndi malo ofanana ndi anisotropic orientation un-ground ndi malo ena pansi. Pamatanthauzo a concentricity, kuzungulira, squareness, perpendicularity, ndi kulolerana kwina, chondelumikizanani ndi timu yathu.
Kupanga Maginito Olimba Ferrite
Kupanga maginito a Hard Ferrite kumaphatikizapo njira zingapo.
1. Zopangira, kuphatikizapo iron oxide ndi strontium carbonate kapena barium carbonate, zimasakanizidwa pamodzi mu chiŵerengero cholondola. Chosakanizacho amachipera kukhala ufa wabwino.
2. Ufawu umaphatikizidwa mu mawonekedwe ofunikira pogwiritsa ntchito makina osindikizira a hydraulic kapena isostatic press. Ufa wophatikizikawo umatenthedwa pa kutentha kwakukulu, pafupifupi pafupifupi 1200-1300 madigiri Celsius, mumlengalenga wowongolera kulimbikitsa kukula kwambewu ndikuwonjezera maginito.
3. Pambuyo pa sintering, maginito amazizidwa pang'onopang'ono mpaka kutentha kuti achepetse kupsinjika ndikupewa ming'alu. Kenako amapangidwa ndi makina kapena pansi kuti akwaniritse mawonekedwe ndi miyeso yomaliza.
4. Nthawi zina, sitepe yowonjezera ya magnetization imafunika. Izi zimaphatikizapo kuyika maginito ku mphamvu ya maginito kuti agwirizane ndi maginito kumalo enaake, kupititsa patsogolo mphamvu zawo zamaginito.
5. Potsirizira pake, maginito amayesa kuyang'anira khalidwe labwino kuti atsimikizire kuti akukwaniritsa zofunikira ndi zofunikira asanapakidwe ndi kutumizidwa kwa makasitomala.
Kuyika kwa Magnet Hard Ferrite
Kuumba pogwiritsa ntchito zida ndiye njira yotsika mtengo kwambiri yopangira maginito olimba a ferrite. Kupanga maginito a anisotropic hard ferrite kumafuna zida zodula, pomwe kupanga maginito a isotropic hard ferrite ndikotsika mtengo kwambiri. Titha kugwiritsa ntchito zida zokonzeka kuumba maginito ena makulidwe / kutalika kwamtundu womwe amaloledwa ngati maginito ofunikira ali ndi mainchesi ofanana ndi zida zamakono, kapena kutalika ndi m'lifupi komwe kuli mtundu wa block.
Kunena zoona, nthawi zina timadula midadada ikuluikulu, pogaya mphete zazikulu kapena ma disc diameters, ndi magawo a arc makina oyandikana ndi omwe amafunikira. Pamene dongosolo kuchuluka si lalikulu kwambiri (makamaka pa prototype gawo), njira imeneyi ndi zothandiza kupeza miyeso yeniyeni, kupulumutsa tooling ndalama, ndi homogenizing kulemera ndi kusinthasintha kwa chidutswa chilichonse cha mankhwala. Mtengo wopangira maginito opangidwa ndi makina ndiwokwera kwambiri.
Wet Anisotropic, Dry Isotropic & Anisotropic Hard Ferrite Magnet
Maginito ambiri olimba a ferrite amapangidwa pogwiritsa ntchito makina osindikizira omwe ali ndi koyilo yomwe imatha kupanga maginito akunja, zomwe zimapangitsa kuti pakhale maginito a anisotropic. Zomwe zimagwiritsidwa ntchito popanga maginito a anisotropic hard ferrite nthawi zambiri zimakhala zonyowa, zomwe zimapangitsa kuti mamolekyu agwirizane bwino panthawi yakuumba. Timatcha maginito opangidwa ndi njirayi kuti ndi maginito onyowa a anisotropic hard ferrite chifukwa amatha kukhala ndi maginito poyang'ana chisanadze. Maginito (BH) ochuluka a maginito a anisotropic hard ferrite maginito ndi maulamuliro angapo a kukula kwake kuposa maginito a isotropic hard ferrite.
Zomwe zimagwiritsidwa ntchito popanga maginito a isotropic hard ferrite nthawi zambiri zimakhala ufa wouma. Kujambula kumapangidwa ndi makina a nkhonya, omwe sangagwiritse ntchito maginito akunja kwa maginito. Zotsatira zake, maginito omwe amatsatira amadziwika kuti dry isotropic hard ferrite maginito. Magnetization pa isotropic hard ferrite maginito imatha kuchitika mwanjira iliyonse yomwe mungafune, kutengera goli lamphamvu.
Dry anisotropic hard ferrite maginito ndi mtundu wina wa maginito amphamvu a ferrite. Zimapangidwa ndi ufa wowuma umene watsogoleredwa ndi maginito akunja. Mphamvu ya maginito ya maginito owuma a anisotropic hard ferrite maginito ndi yotsika kuposa maginito onyowa a anisotropic hard ferrite. Nthawi zambiri, njira yowuma komanso ya anisotropic imagwiritsidwa ntchito kuumba maginito okhala ndi zovuta koma zapamwamba kuposa maginito a isotropic.
Anisotropic, Diametrically Oriented Hard Ferrite Magnet
Ndi axial magnetization, maginito amtundu wa anisotropic hard ferrite amagwiritsidwa ntchito pafupipafupi (kufanana ndi kukanikiza kolowera). Pali zosoweka za msika zamaginito owoneka ngati mphete a anisotropic hard ferrite maginito okhala ndi diametrical magnetization (yoyang'ana perpendicular to the pressing axis), zomwe zimakhala zovuta kupanga. Makina ochapira nthawi, masensa, ma stepping motors, ndi ma pump motors a zida zapakhomo, monga makina ochapira, ochapira mbale, ma aquariums, ndi makina opangira kutentha, amapangidwa kuti agwiritse ntchito maginito amtunduwu. Kusagwirizana pakati pa kukwera kwa mphamvu ya maginito ndi kutsika kwa chiŵerengero cha crack cha zinthu kumabweretsa vuto la kupanga. Kuphulika kwa maginito kumachitika kawirikawiri panthawi ya jekeseni wa sintering ndi shaft. Pambuyo pa zaka zoposa khumi zafukufuku, injiniya wathu adatha kuchotsa botolo ndikupeza chidziwitso chapadera popanga maginito amtunduwu.
Zotentha Zamagetsi a Hard Ferrite Magnet
Chiyerekezo cha kutentha kwa ferrite chovuta cha remanence. Maginito olimba a ferrite ali ndi kutentha kwabwino kwa mphamvu yamkati yokakamiza poyerekeza ndi maginito osowa padziko lapansi. Kukhazikika kwa maginito a ferrite kudzachepa pamene kutentha kumakwera ndi 0.18%/°C, pamene mphamvu yawo yokakamiza idzakwera pafupifupi 0.30%/°C. Mphamvu yokakamiza ya maginito amphamvu a ferrite idzachepa pamene kutentha kwakunja kumachepa. Chotsatira chake, akulangizidwa kukhala ndi zigawo zomwe zimakhala ndi maginito olimba a ferrite omwe sagwira ntchito pa kutentha kochepa. Maginito olimba a ferrite ali ndi kutentha kwa curie pafupifupi 450 ° C. Matenthedwe a hard ferrite maginito omwe akulimbikitsidwa ndi -40°C mpaka 250°C. Maginito olimba a ferrite awona kusintha kwamapangidwe a tirigu pamene kutentha kozungulira kumafika pafupifupi 800oC. Kutentha kumeneku kunalepheretsa maginito kugwira ntchito.
Kukhazikika kwa Chemical & Coating
Maginito olimba a ferrite amakhala ndi kukhazikika kwamankhwala nthawi zambiri. Imagonjetsedwa ndi zinthu zosiyanasiyana, kuphatikizapo brines, diluted acid, potaziyamu ndi sodium hydroxides, alkaline solutions, ndi organic solvents. Ma organic ndi ma inorganic acid, kuphatikiza sulphuric, hydrochloric, phosphoric, hydroflouric, ndi oxalic acid, amatha kuyimitsa. Kukhazikika, kutentha, ndi nthawi yolumikizana zonse zimakhudza kuchuluka ndi liwiro la etching. Sichifunikira kuphimba kuti chitetezo chitetezeke chifukwa dzimbiri sizichitika ngakhale zitagwira ntchito m'malo a chinyezi komanso kutentha. Ikhoza kupakidwa utoto kapena nickel ndi golide, mwachitsanzo, pofuna kukongoletsa kukongola kapena kuyeretsa pamwamba.
N’CHIFUKWA CHIYANI MUTISANKHE
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