Iyo magineti zvimiro zve grey cast iron inosiyana zvakanyanya, kubva pakuderera kwekupinda uye yakakwirira yekumanikidza simba kusvika kune yakakwira permeability uye yakaderera yekumanikidza simba. Shanduko idzi dzinonyanya kuenderana neiyo microstructure yegrey cast iron. Kuwedzera alloying zvinhu kuti uwane inodiwa magineti zvivakwa zvinowanikwa nekushandura chimiro chegreycast iron castings.
| Magnetic Properties yeGrey Cast Iron | |||||||
| Code yeGrey Iron | Muumbi weKemikari (%) | ||||||
| C | Si | Mn | S | P | Ni | Cr | |
| A | 3.12 | 2.22 | 0.67 | 0.067 | 0.13 | ＜0.03 | 0.04 |
| B | 3.30 | 2.04 | 0.52 | 0.065 | 1.03 | 0.34 | 0.25 |
| C | 3.34 | 0.83 - 0.91 | 0.20 - 0.33 | 0.021 - 0.038 | 0.025 - 0.048 | 0.04 | ＜0.02 |
| Magnetic Properties | A | B | C | ||||
| Pearlite | Ferrite | Pearlite | Ferrite | Pearlite | Ferrite | ||
| Carbide Carbon w(%) | 0.70 | 0.06 | 0.77 | 0.11 | 0.88 | / | |
| Remanence / T | 0.413 | 0.435 | 0.492 | 0.439 | 0.5215 | 0.6185 | |
| Coercive Force / A•m-1 | 557 | 199 | 716 | 279 | 637 | 199 | |
| Kurasika kweHysteresis / J•m-3•Hz-1 (B=1T) | 2696 | -696 | 2729 | 1193 | 2645 | 938 | |
| Magnetic Field Strength / kA•m-1 (B=1T) | 15.9 | -5.9 | 8.7 | 8.0 | 6.2 | 4.4 | |
| Max. Magnetic Permeability / μH•m-1 | 396 | 1960 | 353 | 955 | 400 | 1703 | |
| Magnetic Field Simba kana Max. Magnetic Permeability / A•m-1 | 637 | 199 | 1035 | 318 | 1114 | 239 | |
| Resistivity / μΩ•m | 0.73 | 0.71 | 0.77 | 0.75 | 0.42 | 0.37 | |
Ferrite ine yakakwirira magineti permeability uye yakaderera hysteresis kurasikirwa; pearlite inongopesana, ine yakaderera magineti permeability uye yakakura hysteresis kurasikirwa. Pearlite inoumbwa kuita ferrite neannealing kupisa kurapwa, izvo zvinogona kuwedzera magineti permeability nekana. Kuwedzera ferrite zviyo zvinogona kuderedza kurasikirwa kwe hysteresis. Kuvepo kwecementite kunoderedza iyo magineti flux density, permeability uye remanence, uku ichiwedzera permeability uye hysteresis kurasikirwa. Kuvapo kweiyo coarse graphite kunoderedza remanence. Shanduko kubva kuA-type graphite (yakaita flake-shaped graphite iyo inogovaniswa zvakafanana pasina gwara) kuenda kuD-type graphite (yakakwenenzverwa graphite ine isina-directional kugovera pakati pe dendrites) inogona zvakanyanya kuwedzera magineti induction uye simba rekumanikidza. .
Asati asvika kune isiri-magnetic yakakosha tembiricha, tembiricha inokwira zvakanyanya inowedzera magineti permeability yegrey cast iron. Iyo Curie poindi yesimbi yakachena ndiyo α-γ shanduko tembiricha ye770°C. Kana huwandu hwesilicon huri 5%, iyo Curie point ichasvika 730 ° C. Iyo Curie point tembiricha yecementite isina silicon ndeye 205-220 ° C.
Iyo matrix chimiro cheanowanzo shandiswa magiredhi egrey cast iron anonyanya pearlite, uye iwo epamusoro permeability ari pakati pe309-400 μH/m.
Nguva yekutumira: Kubvumbi-17-2021