Izici kazibuthe zensimbi empunga ziyahlukahluka kakhulu, kusukela ekungeneni okuphansi namandla okuphoqeleka aphezulu ukuya ekungeneni okuphezulu namandla aphansi okuphoqeleka. Lezi zinguquko zincike kakhulu ku-microstructure ye-grey cast iron. Ukwengeza izakhi ze-alloying ukuthola izakhiwo ezidingekayo kazibuthe kufinyelelwa ngokushintsha ukwakheka kokumpungacast iron castings.
| I-Magnetic Properties ye-Grey Cast Iron | |||||||
| Ikhodi Yensimbi Empunga | Ukwakhiwa Kwekhemikhali (%) | ||||||
| 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 |
| Izakhiwo Zezibuthe | A | B | C | ||||
| I-Pearlite | I-Ferrite | I-Pearlite | I-Ferrite | I-Pearlite | I-Ferrite | ||
| I-Carbide Carbon w(%) | 0.70 | 0.06 | 0.77 | 0.11 | 0.88 | / | |
| Ukuphila / T | 0.413 | 0.435 | 0.492 | 0.439 | 0.5215 | 0.6185 | |
| I-Coercive Force / A•m-1 | 557 | 199 | 716 | 279 | 637 | 199 | |
| Ukulahlekelwa Kwe-Hysteresis / J•m-3•Hz-1 (B=1T) | 2696 | -696 | 2729 | 1193 | 2645 | 938 | |
| Amandla Ensimu Yezibuthe / kA•m-1 (B=1T) | 15.9 | -5.9 | 8.7 | 8.0 | 6.2 | 4.4 | |
| Ubukhulu. I-Magnetic Permeability / μH•m-1 | 396 | 1960 | 353 | 955 | 400 | 1703 | |
| Amandla Enkambu Yamagnetic lapho I-Max. I-Magnetic Permeability / A•m-1 | 637 | 199 | 1035 | 318 | 1114 | 239 | |
| Ukungazweli / μΩ•m | 0.73 | 0.71 | 0.77 | 0.75 | 0.42 | 0.37 | |
I-Ferrite ine-permeability yamagnetic ephezulu kanye nokulahlekelwa kwe-hysteresis ephansi; i-pearlite ihluke nje, inokungena okuphansi kazibuthe kanye nokulahlekelwa okukhulu kwe-hysteresis. I-Pearlite yakheka ibe yi-ferrite ngokwelashwa kokushisa kwe-anneal, okungakhuphula amandla kazibuthe izikhathi ezine. Ukwandisa okusanhlamvu kwe-ferrite kunganciphisa ukulahlekelwa kwe-hysteresis. Ukuba khona kwe-cementite kuzonciphisa ukuminyana kwe-magnetic flux, ukuvuthwa kanye nokuhlala kabusha, ngenkathi kukhulisa ukuvuthwa kanye nokulahlekelwa kwe-hysteresis. Ukuba khona kwe-graphite eqinile kuzonciphisa ukuqina. Ushintsho olusuka ku-A-type graphite (i-graphite emise okwe-flake esatshalaliswa ngokufanayo ngaphandle kwesiqondiso) ukuya ku-graphite yohlobo lwe-D (igraphite egoqwe kahle enokusabalalisa okungaqondile phakathi kwama-dendrites) ingakhuphula kakhulu ukungeniswa kukazibuthe namandla okuphoqa .
Ngaphambi kokufinyelela izinga lokushisa elibalulekile elingelona uzibuthe, ukukhuphuka kwezinga lokushisa kwandisa kakhulu amandla kazibuthe ensimbi empunga. Iphoyinti le-Curie lensimbi emsulwa izinga lokushisa lokushintsha elingu-α-γ elingu-770°C. Uma iphesenti elikhulu le-silicon lingu-5%, iphoyinti le-Curie lizofinyelela ku-730°C. Izinga lokushisa le-Curie point likasimende ngaphandle kwe-silicon ngu-205-220°C.
Isakhiwo se-matrix samabanga avame ukusetshenziswa ensimbi empunga ngokuyinhloko yi-pearlite, futhi ukufinyeleleka kwawo okuphezulu kuphakathi kuka-309-400 μH/m.
Isikhathi sokuthumela: Apr-17-2021