Magnetic particle inspection inzira yekuona iyo inoshandisa zvimiro zveferromagnetic zvinhu (sesimbi, simbi, cobalt, nickel, nezvimwewo) kuita magineti. Apo iyometal castingine simba remagineti nemagnetic field, kana paine chakakanganisika perpendicular kune magnetization direction pamusoro pepamusoro kana padyo nepamusoro pekukanda, chikamu chemagnetic field mitsara inopfachukira pano, ichiita kuvuza kwemagineti kuti ibudise magineti mapango matsva. Panguva ino, pamusoro pekukanda kunodururwa neyakamiswa magineti mvura kana kusaswa neyakaoma magineti poda, uye magineti poda particles anoratidza kukanganiswa kwehurema nekuda kwekukwezva kwemagineti pole.
Paunenge uchiita magineti particle inspection pane castings, simba remagineti rinowanzo gadzirwa nekusimbisa. Zvinoenderana neakasiyana nzira dzesimba uye azvino waveforms, nzira dzemagineti dzinogona kukamurwa kuita yakananga magineti uye isina kunanga magineti, DC magineti uye AC magineti. Zvinoenderana negwaro rinoumbwa magineti uye nzira yekugadzira iyo magineti, kune nzira dzemagineti dzinogona kukamurwa kuita circumferential magnetization uye longitudinal magnetization, inoenderera magnetization uye yakasara magineti. Mukuongorora chaiko, iyo inowanikwa inogona kusarudza akasiyana AC uye DC anoumba magineti nzira zvinoenderana nehukuru hwekukanda, kugovera kwehurema uye zvimwe zvinhu.
Magnetic powder chinhu chinoumba magineti traces uye chinoratidza kukanganisa, uye zvinyorwa zvayo zvinowanzova high-valent iron oxide ine high magnetic permeability, low remanence uye low coercivity, yakadai seferric oxide uye ferric oxide. Iyo particle size yemagnetic poda ingangoita 80 - 300 μm yenzira yekuyedza neyakaoma magineti poda. Pakunyorova uye nefluorescent yekuongorora, saizi yehupfu hwemagineti inogona kuve yakanaka. Zvidiki zvekukanda zvirema zvinofanirwa kusarudza yakanaka magineti poda. Chimiro cheiyo magineti poda inofanira kunge yakanyanya kutenderera magineti poda, uye yobva yafananidzwa nechimwe chikamu che strip magineti poda.
Magnetic poda kuturika musanganiswa wehupfu hwemagineti uye kupararira mune imwe chikamu. Chikamu chevhoriyamu cheyakajairwa magineti poda ndeye 1.3% - 3.0%, uye chikamu chevhoriyamu chefluorescent magineti poda ndeye 0.1% - 0.3%. Iyo yekuparadzira mvura inogona kusarudzwa kubva mumiriri wemvura, parafini uye musanganiswa weparafini nemafuta ekushandura, ayo ane simba rekudzivirira ngura, kunyorova uye kudonha.
Hunhu uye chiyero chekushandiswa kwemagineti chekuongorora chekuongorora:
1. Magnetic particle inspection ine yakanyanya kunzwisiswa yekuona pamusoro pepamusoro kana pedo-yepamusoro pezvakaremara zvekukanda, asi kunzwisiswa kwayo kunodzikira nekukurumidza nekuwedzera kwekuremara kudzika.
2. Iyi nzira yekuona inongoshanda chete pakuonekwa kwezvinhu zveferromagnetic, asi haigone kushandiswa kune zvisiri-magnetic castings senge austenitic stainless steels.
3. Midziyo yemagnetic particle inspection iri nyore, uye chimbo chinotakurika chiri nyore kushanda panzvimbo.
4. Magnetic particle inspection ine zvakakwirira zvinodiwa pakushata kwenzvimbo yekukanda.
5. Mushure mekuongorora kwekukanda, zvakakosha kuchenesa nzvimbo uye kubvisa yakasara magnetic powder munguva. Kana zvichidikanwa, kurapwa kwe demagnetization kunodiwa.
Nguva yekutumira: Sep-24-2022