Astaamaha birta cawl leh ee birta cawl aad ayey u kala duwan yihiin, laga bilaabo dafitaan hoose iyo xoog xoog wax ku qasbi ah oo sarreeya ilaa awood sarraysa iyo xoog qasab ah oo hooseeya. Isbeddelladani waxay inta badan ku xidhan yihiin qaab-dhismeedka yar ee kabka cawl. Ku darista walxaha alloying si loo helo sifooyinka magnetic loo baahan yahay waxaa lagu gaaraa iyada oo la beddelayo qaab dhismeedka cawltuurista birta.
| Sifooyinka Magnet ee Birta Cast ee Cawlan | |||||||
| Koodhka Birta Cawlan | Halabuurka Kiimikada (%) | ||||||
| C | Si | Mn | S | P | Ni | Cr | |
| A | 3.12 | 2.22 | 0.67 | 0.067 | 0.13 | 03.03 | 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 | 02.02 |
| Guryaha Magnetka | A | B | C | ||||
| Pearlite | Ferrite | Pearlite | Ferrite | Pearlite | Ferrite | ||
| Kaarboon Kaarboon w(%) | 0.70 | 0.06 | 0.77 | 0.11 | 0.88 | / | |
| Joogista / T | 0.413 | 0.435 | 0.492 | 0.439 | 0.5215 | 0.6185 | |
| Xoogaga qasabka ah / A•m-1 | 557 | 199 | 716 | 279 | 637 | 199 | |
| Hoosudhaca Dhumucda / J•m-3•Hz-1 (B=1T) | 2696 | -696 | 2729 | 1193 | 2645 | 938 | |
| Xoogga Goobta Magnetik / kA•m-1 (B=1T) | 15.9 | -5.9 | 8.7 | 8.0 | 6.2 | 4.4 | |
| Max. Dhererka Birlabka / μH•m-1 | 396 | 1960kii | 353 | 955 | 400 | 1703 | |
| Xoogga Goobta Magnetka marka Max. Dhererka Birlabka / A•m-1 | 637 | 199 | 1035 | 318 | 1114 | 239 | |
| Iska caabin / μΩ•m | 0.73 | 0.71 | 0.77 | 0.75 | 0.42 | 0.37 | |
Ferrite waxa uu leeyahay daalacashada magnetic sare iyo luminta hysteresis hooseeya; pearlite waa ka soo horjeeda, waxa ay leedahay permeability magnetic hooseeya iyo luminta hysteresis weyn. Pearlite waxaa loo sameeyay ferrite iyadoo la tirtirayo daawaynta kulaylka, taas oo kordhin karta qulqulka magnetic afar jeer. Kordhinta badarka ferrite waxay yarayn kartaa luminta hysteresis. Joogitaanka sibidhku wuxuu yarayn doonaa cufnaanta qulqulka magnetic, qulqulka iyo joogsiga, iyada oo la kordhinayo qulqulka iyo luminta hysteresis. Joogitaanka garaafyada qalafsan ayaa yarayn doona sii joogida. Beddelka garaafiga nooca A-garaafiga ah (garaafka u qaabaysan flake kaas oo si isku mid ah loo qaybiyay jiho la'aan) loona beddelo garaafyada nooca D-garaafiga ah (graphite si fiican u laalaaban oo leh qaybin aan jiho lahayn oo u dhaxaysa dendrites) waxay si weyn u kordhin kartaa kicinta magnetic iyo xoogga qasabka .
Kahor inta aan la gaarin heerkulka muhiimka ah ee aan magnetka ahayn, kor u kaca heerkulku wuxuu si weyn u kordhiyaa qulqulka magnetka ee birta cawl. Barta Curie ee birta saafiga ah waa α-γ heerkulka kala-guurka ee 770°C. Marka tirada guud ee silikonku ay tahay 5%, barta Curie waxay gaari doontaa 730°C. Heerkulka barta Curie ee sibidhka oo aan lahayn silikoon waa 205-220 ° C.
Qaab dhismeedka shaxanka ee darajooyinka birta cawlan ee sida caadiga ah loo isticmaalo waa pearlite, awoodooda ugu badanna waa inta u dhaxaysa 309-400 μH/m.
Waqtiga boostada: Abriil-17-2021