Kuvura Ububiko bwa Magneti
Ubuso bwo kuvuraneodymiumigira uruhare runini mubikorwa byabo no kuramba. Imashini ya Neodymium, izwi kandi ku izina rya NdFeB, ni imbaraga zikomeye zihoraho zikoze mu kivunge cy'icyuma, boron, na neodymium. Kuvura hejuru bivuga inzira yo gukoresha urwego rukingira cyangwa gutwikira hejuru yinyuma ya magneti ya neodymium. Ubu buvuzi burakenewe kugirango wirinde rukuruzi kwangirika no kunoza igihe kirekire. Ubwoko bukunze kuvurwa hejuru ya magneti ya neodymium harimo isahani ya NiCuNi, isahani ya Zinc, hamwe na Epoxy.
Imwe mumpamvu nyamukuru zituma kuvura hejuru ari ngombwa kuri magneti ya neodymium ni uburyo bworoshye bwo kwangirika. Imashini ya Neodymium igizwe ahanini nicyuma, ikunda kubora iyo ihuye nubushuhe na ogisijeni. Ukoresheje igifuniko kirinda, ruswa irashobora kugabanuka cyane, ikongerera igihe cya magneti.
Indi mpamvu yo kuvura hejuru ni ukuzamura imikorere ya magneti. Ipitingi irashobora gutanga ubuso bworoshye, kugabanya guterana no kwemerera ibintu byiza bya magneti. Bumwe mu buryo bwo kuvura hejuru, nka plaque ya nikel cyangwa isahani ya zahabu, birashobora kunoza imbaraga za rukuruzi ku bushyuhe bwinshi, bigatuma bikenerwa no gukoreshwa birimo ubushyuhe. Ubuvuzi bwo hejuru butuma kandi magnesi ya neodymium ishobora guhuzwa nibidukikije hamwe na porogaramu. Kurugero, epoxy coatings irashobora gutanga insulasiyo, ituma magneti akoreshwa mumashanyarazi adafite umuvuduko muto. Ipitingi irashobora kandi kurinda magneti imiti cyangwa imiti, bigatuma ikoreshwa muburyo bwangirika cyangwa mubisabwa aho guterana no kwambara bihari.
Ubuvuzi bwo hejuru burakenewe kugirango magnesi ya neodymium irinde kwangirika, kongera imikorere, kongera igihe kirekire, no kwemeza guhuza nibidukikije hamwe nibisabwa. Mugukoresha uburyo bukwiye bwo kuvura, igihe cyo kubaho no gukora neza bya magneti ya neodymium birashobora kunozwa cyane.
Hasi nurutonde rwibisahani / ibishishwa hamwe namababa yabyo kugirango ubone.
| Kuvura Ubuso | ||||||
| Igipfukisho | Igipfukisho Umubyimba (μm) | Ibara | Ubushyuhe bwo gukora (℃) | PCT (h) | SST (h) | Ibiranga |
| Ubururu-bwera Zinc | 5-20 | Ubururu-Umweru | 60160 | - | ≥48 | Anodic |
| Ibara rya Zinc | 5-20 | Ibara ry'umukororombya | 60160 | - | ≥72 | Anodic |
| Ni | 10-20 | Ifeza | 90390 | ≥96 | ≥12 | Kurwanya ubushyuhe bwinshi |
| Ni + Cu + Ni | 10-30 | Ifeza | 90390 | ≥96 | ≥48 | Kurwanya ubushyuhe bwinshi |
| Vacuum aluminizing | 5-25 | Ifeza | 90390 | ≥96 | ≥96 | Gukomatanya neza, kurwanya ubushyuhe bwo hejuru |
| Amashanyarazi epoxy | 15-25 | Umukara | ≤200 | - | 60360 | Gukingira, guhuza neza kubyimbye |
| Ni + Cu + Epoxy | 20-40 | Umukara | ≤200 | 80480 | 20720 | Gukingira, guhuza neza kubyimbye |
| Aluminium + Epoxy | 20-40 | Umukara | ≤200 | 80480 | ≥504 | Gukingira, kurwanya cyane gutera umunyu |
| Epoxy spray | 10-30 | Umukara, Icyatsi | ≤200 | ≥192 | ≥504 | Kwikingira, kurwanya ubushyuhe bwinshi |
| Fosifati | - | - | 50250 | - | ≥0.5 | Igiciro gito |
| Passivation | - | - | 50250 | - | ≥0.5 | Igiciro gito, cyangiza ibidukikije |
| Menyesha abahanga bacukubindi bitambaro! | ||||||
Ubwoko bwa coatings ya magnesi
NiCuNi: Ipitingi ya nikel igizwe nibice bitatu, nikel-umuringa-nikel. Ubu bwoko bwo gutwikira ni bwo bukoreshwa cyane kandi butanga uburinzi bwo kwangirika kwa rukuruzi mu bihe byo hanze. Amafaranga yo gutunganya ni make. Ubushyuhe ntarengwa bwo gukora ni hafi 220-240ºC (ukurikije ubushyuhe ntarengwa bwo gukora bwa magneti). Ubu bwoko bwo gutwikira bukoreshwa muri moteri, generator, ibikoresho byubuvuzi, sensor, porogaramu zikoresha amamodoka, kugumana, uburyo bwo kubika firime yoroheje, na pompe.
Umukara Nickel. Ibyiza bisa nibisanzwe bya nikel; hamwe numwihariko ko iyi coating ikoreshwa mubisabwa bisaba ko ibintu bigaragara mubice bitagaragara.
Zahabu: Ubu bwoko bwo gutwikira bukoreshwa kenshi mubuvuzi kandi burakwiriye no gukoreshwa muguhuza umubiri wumuntu. Hano hari icyemezo cyatanzwe na FDA (Ubuyobozi bushinzwe ibiryo n'ibiyobyabwenge). Munsi ya zahabu, hari sub-layer ya Ni-Cu-Ni. Ubushyuhe ntarengwa bwo gukora nabwo bugera kuri 200 ° C. Usibye urwego rwubuvuzi, isahani ya zahabu ikoreshwa no mu mitako no gushushanya.
Zinc: Niba ubushyuhe ntarengwa bwo gukora buri munsi ya 120 ° C, ubu bwoko bwo gutwikira burahagije. Ibiciro biri hasi kandi rukuruzi irinzwe kwangirika mukirere. Irashobora kwizirika ku byuma, nubwo igomba gukoreshwa idasanzwe. Ipitingi ya zinc irakwiriye mugihe inzitizi zo gukingira rukuruzi ziri hasi kandi ubushyuhe buke bwakazi bwiganje.
Parylene: Iyi coating nayo yemejwe na FDA. Kubwibyo, zikoreshwa mubikorwa byubuvuzi mumubiri wumuntu. Ubushyuhe ntarengwa bwo gukora bugera kuri 150 ° C. Imiterere ya molekile igizwe na hydrocarubone imeze nk'impeta igizwe na H, Cl, na F. Ukurikije imiterere ya molekile, ubwoko butandukanye butandukanijwe nka Parylene N, Parylene C, Parylene D, na Parylene HT.
Epoxy: Igifuniko gitanga inzitizi nziza irwanya umunyu namazi. Hano haribintu byiza cyane bifatanye nicyuma, niba magnet yometse hamwe nudusimba twihariye dukwiranye na magnesi. Ubushyuhe ntarengwa bwo gukora ni hafi 150 ° C. Ububiko bwa epoxy busanzwe bwirabura, ariko burashobora no kuba umweru. Porogaramu irashobora kuboneka murwego rwamazi, moteri, sensor, ibicuruzwa byabaguzi, hamwe nimodoka.
Magneti yatewe muri plastiki: nazo zitwa kurenza urugero. Ikintu nyamukuru kiranga ni uburyo bwiza bwo kurinda magneti kutavunika, ingaruka, no kwangirika. Igice kirinda umutekano kirinda amazi n'umunyu. Ubushyuhe ntarengwa bwo gukora buterwa na plastiki yakoreshejwe (acrylonitrile-butadiene-styrene).
Yashizweho PTFE (Teflon): Nka shitingi yatewe / plastike nayo itanga uburinzi buhebuje bwa magneti kugirango itangirika, ingaruka, na ruswa. Magneti irinzwe nubushuhe, amazi, n umunyu. Ubushyuhe ntarengwa bwo gukora buri hafi 250 ° C. Iyi coating ikoreshwa cyane cyane mubikorwa byubuvuzi no mubiribwa.
Rubber: Igikoresho cya reberi kirinda neza kumeneka n'ingaruka kandi bigabanya ruswa. Ibikoresho bya reberi bitanga imbaraga zo kunyerera hejuru yicyuma. Ubushyuhe ntarengwa bwo gukora buri hagati ya 80-100 ° C. Magneti yinkono hamwe na reberi ni ibicuruzwa bigaragara kandi bikoreshwa cyane.
Duha abakiriya bacu inama zumwuga nibisubizo byuburyo bwo kurinda magnesi zabo no kubona uburyo bwiza bwa magneti.Twandikirekandi tuzishimira gusubiza ikibazo cyawe.