Vaega faapitoa uma

MAGNETS FAAMATALAGA

  • Talaaga ma Talafaasolopito
  • mamanu
  • Faʻataga Filifili
  • Togafitiga luga
  • Faʻasalaga
  • Faʻasologa o Faʻasologa, Lautele ma le faapalepale
  • Taiala mo le saogalemu mo le faagaoioiga o le lima

Talaaga ma Talafaasolopito

Permanent magnets are a vital part of modern life. They are found in or used to produce almost every modern convenience today. The first permanent magnets were produced from naturally occurring rocks called lodestones. These stones were first studied over 2500 years ago by the Chinese and subsequently by the Greeks, who obtained the stone from the province of Magnetes, from which the material got its name. Since then, the properties of magnetic materials have been profoundly improved and todays permanent magnet materials are many hundreds of times stronger than the magnets of antiquity. The term permanent magnet comes from the ability of the magnet to hold an induced magnetic charge after it is removed from the magnetizing device. Such devices may be other strongly magnetized permanent magnets, electro-magnets or coils of wire that are briefly charged with electricity. Their ability to hold a magnetic charge makes them useful for holding objects in place, converting electricity to motive power and vice versa (motors and generators), or affecting other objects brought near them.


"Toe i luga

mamanu

O le sili atu o le gaioiga o le magnetic o se galuega o le sili atu o le enisinia mageta. Mo tagata o loʻo manaʻomia le fesoasoani i mamanu poʻo mamanu femalagaaʻi faʻapitoa, QM's 'au o faʻataʻitaʻiga faʻapitoa faʻamaonia ma faʻamatalaga o faʻataufanua faʻatau atamai o loʻo i lau auʻaunaga. QM Inisinia galulue faatasi ma tagata faatau e faʻaleleia pe faʻamaonia mamanu o loʻo i ai faʻapea foi le atinaʻeina o mamanu fou e maua ai faʻamalosi faʻapitoa. QM ua atiaeina mamanu mamate mamanu e maua ai le malosi tele, toniga poʻo le faʻapitoa o le magnetic field, lea e masani ona suia ai masini eletise ma le le lelei ma mamanu tumau. E faʻamaoni tagata faʻatau pe a aumai se manatu faʻapitoa po o se manatu fou QM o le a faʻafetaui lena luitau e ala i le tusia mai le 10 tausaga o le faʻamaonia o maseta. QM o loʻo i ai tagata, oloa ma tekonolosi e faʻaoga ai le tele o manoa.


"Toe i luga

Faʻataga Filifili

Filifiliga o le Magnet mo talosaga uma e tatau ona mafaufau i le auala atoa ma le siosiomaga. Afai e talafeagai Alnico, e mafai ona faaitiitia le maneta pe afai e mafai ona faʻalauteleina pe a uma le faʻapotopotoga i totonu o le mageta circuit. Afai e faʻaaogaina tutoatasi mai isi vaega o le matagaluega, e pei o faʻamalosaga saogalemu, o le fua lelei o le uumi o le aofaʻi (e fesoʻotaʻi ma le coefficient permeance) e tatau ona lava tele e mafua ai le galue o le maneta i luga ae o le tulivae i lona lua o le diagnostizationization curve curve. Mo faʻataʻitaʻiga ogaoga, e mafai ona faʻamautuina ai alo o Alnico i se faʻamautuga o le maualuga o le faasiliga.

O se oloa e maua mai i le maualalo o le faʻamalosi tino o se lagona faʻaalia i le faʻaleagaina o aafiaga ona o fafo atu maneta mala, teʻi, ma le faʻaogaina o le vevela. Mo faitioga taua, Alnico magnets mafai ona faʻamautuina le vevela e faʻaitiitia ai nei aʻafiaga E fa vasega o ona po nei faʻapisinisi maneta, taʻitasi faʻavae i luga o latou mea mea na fausia. I totonu o vasega taʻitasi o se aiga o togi ma a latou lava maneta meatotino. O nei vasega lautele o:

  • Neonamium Iron Boron
  • Samarium Falealili
  • keramika
  • Alnico

NdFeB ma SmCo ua lauiloa taʻua o Rare Lalolagi maneta ona latou e lua fausiaina o mea mai le Rare Lalolagi vaega o elemene. Neodymium Iron Boron (lautele tuufaatasiga Nd2Fe14B, masani ona faapuupuuina ia NdFeB) o le sili ona lata mai faapisinisi faaopoopoga i le aiga o po nei maneta mea. I potu vevela, NdFeB magnets faʻaalia ai le maualuga meatotino o uma maneta mea. O le Samarium Cobalt e gaosia i ni tusitusiga se lua: Sm1Co5 ma le Sm2Co17 - e masani ona taʻua o le SmCo 1: 5 poʻo le SmCo 2:17 ituaiga. 2:17 ituaiga, ma maualuga Hci faʻatauaina, ofoina sili atu mautu mausali nai lo le 1: 5 ituaiga. O le keramika, e taʻua foi ole Ferrite, magnets (lautele tuufaatasiga BaFe2O3 poʻo le SrFe2O3) na faʻapisinisi talu mai le 1950s ma faʻaauau ai ona faʻaaogaina lautele nei ona o le latou tau maualalo. O se faʻapitoa ituaiga o keramika maneta o le "fetuutuunai" mea, faia e le fusifusia Ceramic paʻu i se fetuutuunai faʻamau. Alnico magnets (lautele tuʻufaʻatasiga Al-Ni-Co) na faʻapisinisi i le 1930s ma o loʻo faʻaaogaina pea i aso nei.

O nei mea e aofia ai le tele o mea totino o loʻo faʻaogaina ai le tele o mea manaʻomia. O mea nei e faʻamoemoe e tuʻuina atu ai se aotelega lautele ae mafai ona faʻatinoina mea e tatau ona mafaufauina i le filifilia o mea talafeagai, vasega, foliga, ma le tele o le maneta mo se faʻamatalaga patino. O le siata o loʻo i lalo o loʻo faʻaalia ai tulaga masani o uiga taua mo ituaiga filifilia o mea eseese mo le faʻatusatusaga. O nei tulaga faatauaina o le a talanoaina auiliili i vaega nei.

Faʻatusatusaga Mateta Matata

mea
vasega
Br
Hc
Hci
BH Max
T max (Deg c) *
Faʻamaonia
39H
12,800
12,300
21,000
40
150
SmCo
26
10,500
9,200
10,000
26
300
Faʻamaonia
B10N
6,800
5,780
10,300
10
150
Alnico
5
12,500
640
640
5.5
540
keramika
8
3,900
3,200
3,250
3.5
300
vavai
1
1,500
1,380
1,380
0.6
100

* T max (pito i luga o le taumafataga o galuega) e mo na o le faasino. O le maualuga o le taumafataga o le faʻaaogaina o soʻo se maneta e faʻalagolago i le matagaluega o loʻo galue ai le maneta.


"Toe i luga

Togafitiga luga

E mafai ona ufiufi logo e faalagolago i le talosaga lea o loʻo faʻamoemoeina. E faʻaleleia le faʻalelei o foliga vaaia, faʻafefe o mea leaga, puipui mai lavalava ma atonu e talafeagai mo talosaga i tulaga mama potu.
Samarium Cobalt, Alnico mea e faʻaogaina ai le faʻamaʻi, ma e le manaʻomia ona faʻapipiʻiina i le faaleagaina. Alnico e faigofie ona ufiufi mo uiga lelei.
O faʻafiafiaga o le NDFeB e sili ona faigofie i le faʻamaʻi ma e masani ona puipuia i lenei auala. E i ai ituaiga laumei e talafeagai mo manoa tumau, E le o ituaiga uma o le ufiufi o le a fetaui lelei mo mea uma poʻo le maguma geometry, ma o le faaiuga mulimuli o le a faʻalagolago i le talosaga ma le siosiomaga. O se filifiliga faaopoopo o le fausiaina lea o le maneta i totonu o se pusa i fafo e puipuia ai le faaleagaina ma le faaleagaina.

Faʻafiafiaga Faʻapitoa

Su amata

ufiufi

Maʻi (Micron)

lanu

teteʻega

Faʻamasalaga


1

Silver Gray

Puipuiga Le Tumau

limasene

Ni + Ni

10-20

Pupula siliva

Lelei e faasaga i le Faʻamamafana

Ni + Cu + Ni

siniki

Zn

8-20

Bright Blue

Lelei faasaga i le Toto

F-Zn

Sini Lanu

Lelei e Lelei i le Toto

Tin

Ni + Cu + Sn

15-20

siliva

Sili Atu Faʻasaga i le Malu

auro

Ni + Cu + Au

10-20

auro

Sili Atu Faʻasaga i le Malu

apamemea

Ni + Cu

10-20

auro

Puipuiga Le Tumau

Epokotia

Epokotia

15-25

Black, Red, Grey

Sili Lelei e faasaga i le Suavai
Faamama sifo

Ni + Cu + Epoxy

Zn + Epoxy

vailāʻau

Ni

10-20

Silver Gray

Sili Lelei e faasaga i le Suavai

Parylene e

Parylene e

5-20

Lanu efuefu

Lelei e uiga i le Suavai, Faamama Sasa. Sili atu e tetee atu i soliga, pala, silo ma paga.
 FDA Faamaonia.


"Toe i luga

Faʻasalaga

O le magneti tumau na tuʻuina i lalo o le lua tulaga, Faʻasalaina pe leai magnetised, e masani ona le faailogaina lona polarity. Afai e manaʻomia e le 'auʻaunaga, e mafai ona matou makaina le polarity e ala i auala ua malilie i ai. Pe a faʻasolosolo le poloaiga, e tatau i le tagata faʻaoga ona logoina le tulaga tuʻuina atu ma pe afai o le faailoga o le polarity e talafeagai.

O le magnetization field o le magnet tumau e fesoʻotaʻi ma le ituaiga maseta tumau ma lona malosi faʻamalosia. Afai e manaʻomia e le maneta le faʻalauteleina ma le faʻataʻatitia, faʻamolemole faʻafesoʻotaʻi faʻatasi ma i matou ma ole atu mo le lagolago lagolago.

E lua metotia e faʻafefete ai le magnet: nofoaga DC ma le pulse magnetic field.

E tolu auala e faʻaaogaina ai le magnet: faʻaleagaina e ala i le vevela o se metotia faʻapitoa. faʻapitoa i le AC field. Faʻaletonu i le DC. O lenei mea e manaʻomia ai le malosi o le mageta ma le maualuga o le tomai faʻavacnetization.

Geometry foliga ma le magnetization taʻiala o le magnet tumau: i le mataupu faavae, matou te maua ai le magnet tumau i ni foliga eseese. E masani lava, e aofia ai poloka, vaʻa, mama, vaega ma isi. O faʻamatalaga auiliili o le magnetization direction o loʻo i lalo:

Taʻiala o le Faʻasalaga
(Ata e Faʻaalia Taʻitaʻaiga Faʻatasi o Manetization)

faʻalauteleina e ala i le mafiafia

aʻoaʻoga faʻalautele

faʻalauteleina faʻalautele i vaega

faʻasolosolo faʻatasi i luga o le tasi foliga

faʻasolosolo faʻalautele i vaega o loʻo i luga o le lautele *

faʻasolosolo faʻalautele i vaega i luga o le tasi itu

faʻasalaga faʻasalalau *

faataamilo i le lautele *

faʻasolosolo faʻalautele i vaega i totonu o le matua *

mea uma e maua e pei o le isotropic poʻo le mea anisotropic

* naʻo avanoa i totonu o faʻamatalaga faʻasalalau ma faʻamaonia faapitoa


faʻasalalau faʻalelei

faʻasologa faʻasolosolo


"Toe i luga

Faʻasologa o Faʻasologa, Lautele ma le faapalepale

Vagana ai le maualuga i le itu o le magnetation, o le maualuga o le maualuga o le maneta tumau e le sili atu i le 50mm, lea e faatapulaaina e le nofoaga o aoaoga ma mea e gaosia ai. O le maualuga i le le faʻaaogaina o le agai ile 100mm.

O le faapalepale e masani lava +/- 0.05 - +/- 0.10mm.

Tala: O isi foliga e mafai ona gaosia e tusa ma le tagata faʻatau faʻataʻitaʻiga poʻo le lanumoana lolomi

liʻo
Taunuuga Oloa
Totonu o Totonu
mafia
aupito tele
100.00mm
95.00m
50.00mm
aupito itiiti
3.80mm
1.20mm
0.50mm
Disc
taiamita
mafia
aupito tele
100.00mm
50.00mm
aupito itiiti
1.20mm
0.50mm
pupuni
umi
lautele
mafia
aupito tele100.00mm
95.00mm
50.00mm
aupito itiiti3.80mm
1.20mm
0.50mm
Vaega o le arc
O Luter Radius
Initan Radius
mafia
aupito tele75mm
65mm
50mm
aupito itiiti1.9mm
0.6mm
0.5mm



"Toe i luga

Taiala mo le saogalemu mo le faagaoioiga o le lima

1. O le magnetised tumau magnets ma le malosi magnetic field e tosina atu ai le uʻamea ma isi mea mageta e siomia ai i latou. I lalo o le tulaga masani, e tatau i le tagata faʻapipiʻi ona faʻaeteete e aloese mai soʻo se mea leaga. Ona o le malolosi malosi o le magnet, o le maneta lapoa e latalata ia i latou e ono lamatia ai le leaga. E masani ona faʻapipiʻi faʻapitoa e nei tagata nei vaʻa poʻo ni faʻamau. I lenei tulaga, e tatau ona tatou vaʻaia totini puipui i le faʻaaogaina.

2. I lenei tulaga o le malosi o le magnet, o soʻo se mea eletise eletise ma le mita suʻesuʻe e mafai ona suia pe faʻaleagaina. Faamolemole silasila i ai o le komepiuta, faʻaalia ma le maseta media, mo se faʻataʻitaʻiga o le lipine magnet, lipine tape kaseti ma le televise faʻamaumauga ma isi mea faapena, e mamao ese mai i le magnetized components, e sili atu nai lo le 2m.

3. O le faʻapipiʻiina o malosiaga faatosina i le va o ni faʻamaumau tumau se lua o le a aumaia ai ni aloiafi tetele. O le mea lea, e le tatau ona tuʻu faʻamalosia i latou i le mea e mumu ai le afi poʻo mea pāpā.

4. A oʻo ina faʻaalia le maneta i le hydrogen, e faʻasaina le faʻaaogaina o mea tumau tumau e aunoa ma se faʻafefe puipui. O le mafuaʻaga o le faʻaleagaina o le hydrogen o le a faʻaumatia ai le microstructure o le maneta ma taʻitaʻia ai le faʻaleagaina o le mageta properties. Pau lava le ala e puipuia lelei ai le maneta o le faʻapipiʻi lea o le maneta i se mea ma faamau ai.


"Toe i luga