Ozibuthe be-Sintered NdFeB, njengenye yezinto ezibalulekile zokukhuthaza ubuchwepheshe besimanje kanye nenqubekela phambili yezenhlalo, basetshenziswa kabanzi emikhakheni elandelayo: i-computer hard disk, imaging magnetic resonance imaging, izimoto zikagesi, ukukhiqizwa kwamandla omoya, izinjini ezihlala unomphela ezimbonini, i-electronics yabathengi. (I-CD, i-DVD, omakhalekhukhwini, okulalelwayo, okokukopisha, izikena, amakhamera evidiyo, amakhamera, iziqandisi, amasethi we-TV, ama-air conditioner, njll.) kanye nozibuthe imishini, ubuchwepheshe be-magnetic levitation, ukudluliselwa kazibuthe nezinye izimboni.
Eminyakeni engu-30 edlule, imboni yezinto ezibonakalayo zikazibuthe emhlabeni wonke ibilokhu idlondlobala kusukela ngo-1985, lapho imboni iqala ukuthuthukiswa kwezimboni eJapane, eChina, eYurophu nase-United States, futhi izakhiwo kazibuthe bezilokhu zibeka amarekhodi amasha futhi zandisa isibalo se izinhlobo zezinto ezibonakalayo namabanga. Kanye nokwanda kwemakethe, abakhiqizi nabo bayanda, futhi amakhasimende amaningi abanjwe nakanjani kulokhu kudideka, indlela yokwahlulela ukufaneleka komkhiqizo? Indlela ebanzi kakhulu yokwahlulela: okokuqala, ukusebenza kukazibuthe; okwesibili, ubukhulu kazibuthe; okwesithathu, ukugqoka kazibuthe.
Okokuqala, isiqinisekiso sokusebenza kazibuthe sivela ekulawuleni inqubo yokukhiqiza izinto zokusetshenziswa
1, Ngokuvumelana nezidingo zebhizinisi elikhiqiza i-NdFeB yezinga eliphezulu noma eliphakathi noma eliphansi le-sintered, ukwakheka kwempahla eluhlaza ngokwezinga likazwelonke lokuthenga izinto zokusetshenziswa.
2, Inqubo yokukhiqiza ethuthukisiwe inquma ngokuqondile ikhwalithi yokusebenza kukazibuthe. Njengamanje, ubuchwepheshe obuphambili kakhulu ubuchwepheshe be-Scaled Ingot Casting (SC), ubuchwepheshe beHydrogen Crushing (HD) kanye nobuchwepheshe be-Airflow Mill (JM).
Iziqhumiso zokuncibilikisa zokuncibilikisa umthamo omncane we-vacuum (10kg, 25kg, 50kg) zithathelwe indawo ngomthamo omkhulu (100kg, 200kg, 600kg, 800kg), ubuchwepheshe be-SC (StripCasting) kancane kancane buthathe indawo yezingosi ezinkulu (ingots ezinobukhulu obukhulu kuno-20). 40mm lapho okupholisa khona), HD (I-Hydrogen Ubuchwepheshe beCrushing) kanye negas flow mill (JM) esikhundleni se-gaw crusher, i-disc mill, i-ball mill (ukwenziwa kwempushana emanzi), ukuze kuqinisekiswe ukufana kwempushana, futhi kulungele ukucwiliswa kwesigaba soketshezi kanye nokucolisiswa okusanhlamvu.
3, On magnetic field orientation, China ukuphela kwezwe emhlabeni elamukela izinyathelo ezimbili zokubunjwa press, nge ingcindezi encane ukubumba mpo for orientation kanye quasi-isostatic ukubumba ekupheleni, okungenye yezici ezibaluleke kakhulu sintered China sika. Imboni ye-NdFeB.
Okwesibili, isiqinisekiso sosayizi uzibuthe sincike emandleni okucubungula embonini
Ukusetshenziswa kwangempela kozibuthe be-NdFeB unomphela kunobunjwa obuhlukahlukene, njengendilinga, i-cylindrical, i-cylindrical (enembobo yangaphakathi); isikwele, isikwele, ikholomu eyisikwele; ithayela, ifeni, i-trapezoid, ipholigoni kanye nezimo ezihlukahlukene ezingavamile.
Umumo ngamunye womazibuthe unomphela unosayizi abahlukene, futhi inqubo yokukhiqiza inzima ukwakhiwa ngesikhathi esisodwa. Inqubo yokukhiqiza ejwayelekile yile: Mr. okukhiphayo okukhulu (usayizi omkhulu) izikhala, ngemva sintering futhi tempering ukwelashwa, bese ngokusebenzisa ukucutshungulwa ngomshini (kuhlanganise ukusika, ngezibhakela) nokugaya, surface plating (enamathela) processing, bese ukusebenza uzibuthe, ikhwalithi ebusweni kanye ukuhlolwa kokunemba kobukhulu, bese kuba yizibuthe, ukupakisha kanye nefekthri.
1, ukucutshungulwa komshini kuhlukaniswe izigaba ezintathu: (1) ukusika ukucutshungulwa: ukusika i-cylindrical, omagnets abamise okwesikwele babe yindilinga, emise okwesikwele, (2) ukucubungula umumo: ukucubungula nxazonke, omagnethi abayisikwele babe okumise okwefeni, okumise okwethayela noma anemifantu noma ezinye izimo eziyinkimbinkimbi zikamabuthe, (3) ukucutshungulwa kokubhoboza: ukucubungula omabuthe abayindilinga, abamise okwebha yesikwele babe omazibuthe abayisilinda noma abamise okwesikwele. Izindlela zokucubungula yilezi: ukugaya nokusika, ukucubungula kwe-EDM nokucutshungulwa kwe-laser.
2, Ingaphezulu lezingxenye zikazibuthe ze-Sintered NdFeB ngokuvamile lidinga ukushelela nokunemba okuthile, futhi ingaphezulu likazibuthe elilethwe ngokungenalutho lidinga ukucutshungulwa kokugaya okungaphezulu. Izindlela zokugaya ezivamile zesikwele se-NdFeB unomphela uzibuthe ingxubevange ukugaya indiza, ukuphela kokugaya kabili, ukugaya kwangaphakathi, ukugaya kwangaphandle, njll. Ukugaya okujwayelekile okusetshenziselwa i-cylindrical, ukugaya okuphindwe kabili, njll iyasetshenziswa.
Umazibuthe oqeqeshiwe akadingi nje kuphela ukuhlangabezana nezinga lokusebenza, kodwa futhi nokulawula ukubekezelelana kwe-dimensional kuthinta ngokuqondile ukusetshenziswa kwayo. Isiqinisekiso sobukhulu sincike ngokuqondile emandleni okucubungula efektri. Imishini yokucubungula ivuselelwa njalo ngesidingo sezomnotho nesemakethe, futhi umkhuba wemishini esebenza kahle kakhulu kanye ne-automation yezimboni awugcini nje ukuhlangabezana nesidingo esikhulayo samakhasimende sokunemba komkhiqizo, kodwa futhi ukonga abasebenzi kanye nezindleko, okwenza kube nokuncintisana kakhulu imakethe.
Futhi, ikhwalithi ye-magnet plating inquma ngokuqondile impilo yokusetshenziswa komkhiqizo
Ngokokuhlola, uzibuthe we-NdFeB oyi-1cm3 sintered uzogqwala yi-oxidation uma ushiywe emoyeni ku-150 ℃ izinsuku ezingama-51. Esixazululweni se-asidi esibuthakathaka, kungenzeka ukuthi corrode. Ukuze wenze izibuthe ezihlala njalo ze-NdFeB zihlale ziqinile, kuyadingeka ukuthi ube nempilo yesevisi yeminyaka engama-20-30.
Kumele iphathwe ngomuthi oqeda ukugqwala ukuze imelane nokugqwala kukazibuthe yimithombo yezindaba ebolayo. Njengamanje, omazibuthe be-NdFeB abasindisiwe bavame ukumbozwa ngensimbi, i-electroplating + chemical plating, i-electrophoretic coating kanye nokwelashwa kwe-phosphate ukuvimbela uzibuthe kusuka endaweni egqwalayo.
1, ngokuvamile i-galvanized, i-nickel + ithusi + i-nickel plating, i-nickel + ithusi + i-chemical nickel plating izinqubo ezintathu, ezinye izidingo ze-metal plating, ngokuvamile zisetshenziswa ngemva kwe-nickel plating bese kuba nokunye ukufakwa kwensimbi.
2, kwezinye izimo ezikhethekile uyophinde asebenzise phosphating: (1) in the NdFeB uzibuthe imikhiqizo ngenxa inzuzo, ukulondolozwa isikhathi eside kakhulu futhi akucaci lapho okwalandela phezu surface ukwelashwa indlela, ukusetshenziswa phosphating kulula futhi kulula; (2) lapho uzibuthe udinga i-epoxy glue bonding, umdwebo, njll., iglue, upende nokunye ukunamathela okuphilayo kwe-epoxy kudinga ukusebenza kahle kokungena kwe-substrate. Inqubo ye-Phosphating ingathuthukisa ikhono likazibuthe lokungena.
I-3, i-electrophoretic coating isiphenduke enye yobuchwepheshe bokwelapha obusetshenziswa kabanzi bokulwa nokugqwala. Ngoba ayinakho nje kuphela ukuhlangana okuhle ne-porous magnet surface, kodwa futhi inokumelana nokugqwala kwesifutho sikasawoti, i-asidi, i-alkali, njll., i-anti-corrosion enhle kakhulu. Kodwa-ke, ukumelana kwayo nomswakama nokushisa akubi kakhulu uma kuqhathaniswa nokumbozwa kwesifutho.
Amakhasimende angakhetha enamathela ngokuvumelana nezidingo zabo zokusebenza umkhiqizo. Ngokunwetshwa kwenkambu yesicelo sezimoto, amakhasimende anezidingo eziphakeme zokumelana nokugqwala kwe-NdFeB. Ukuhlolwa kwe-HAST (okubizwa nangokuthi i-PCT test) ukuhlola ukumelana nokugqwala kozibuthe be-sintered NdFeB ngaphansi kwemvelo enomswakama kanye nezinga eliphezulu lokushisa.
Futhi ikhasimende lingahlulela kanjani ukuthi i-plating iyahlangabezana nezidingo noma cha? Inhloso yokuhlolwa kwesifutho sikasawoti ukwenza isivivinyo esisheshayo sokunqanda ukugqwala kozibuthe be-NdFeB abasindisiwe ubuso babo buphathwe nge-anti-corrosion coating. Ekupheleni kokuhlolwa, isampula liyakhishwa egumbini lokuhlola, lomiswe, futhi libhekwe ngamehlo noma ngengilazi yokukhulisa ukuze kubonakale ukuthi akhona yini amachashaza ebusweni besampula, usayizi webhokisi lendawo ushintsha umbala.
Isikhathi sokuthumela: Jan-06-2023
