pechning najasga chidamli isitish simi
Fe-Cr-Al qotishmasi
Yuqori haroratli xizmat muddati uzoqroq
Yuqori oksidlanishga chidamlilik
Yuqori qarshilik
Yuqori sifatli past narxdagi FeCrAl qotishma simlari
Fe-Cr-Al qotishmasi yuqori qarshilik, past harorat qarshilik koeffitsienti, yuqori ish harorati, yuqori harorat ta'sirida yaxshi antioksidlanish va korroziyaga qarshi xususiyatlarga ega.
U sanoat pechlari, maishiy texnika, sanoat pechlari, metallurgiya, mashinasozlik, samolyotsozlik, avtomobilsozlik, harbiy va boshqa sohalarda isitish elementlari va qarshilik elementlarini ishlab chiqarishda keng qo'llaniladi.
Nichrom isitish qotishmasi sof nikel, NiCr qotishmasi, Fe-Cr-Al qotishmasi va mis nikel qotishmasini o'z ichiga oladi.
FeCrAl qarshilik simining darajasi: 0Cr25Al5, 1Cr13Al4, 0Cr23Al5, 0Cr27Al7Mo2, 0Cr21Al6Nb, 0Cr21Al4, 0Cr21Al6.
Sim, lenta va tasma shaklida, bir xil material Fe-Cr-Al qotishmasi.
Sim: 0,018 mm-10 mm
Tayoqcha: 8mm-50mm
Lenta: 0,05 * 0,2 mm-2,0 * 6,0 mm
Tasma: 0,5 * 5,0 mm-5,0 * 250 mm
| Qotishma nomenklaturasining ishlashi | 1Cr13Al4 | 0Cr25Al5 | 0Cr21Al6 | 0Cr23Al5 | 0Cr19Al3 | 0Cr21Al6Nb | 0Cr27Al7Mo2 | |
| Kimyoviy tarkibi (%) | Cr | 12.0-15.0 | 23.0-26.0 | 19.0-22.0 | 20.5-23.5 | 18.0-21.0 | 21.0-23.0 | 26.5-27.8 |
| Al | 4.0-6.0 | 4.5-6.5 | 5.0-7.0 | 4.2-5.3 | 3.0-4.2 | 5.0-7.0 | 6.0-7.0 | |
| Re | qulay | qulay | qulay | qulay | qulay | qulay | qulay | |
| Fe | Dam olish | Dam olish | Dam olish | Dam olish | Dam olish | Dam olish | Dam olish | |
| – | – | – | – | – | Nb0.5 | Dushanba 1.8-2.2 | ||
| Elementning maksimal uzluksiz xizmat ko'rsatish harorati (%) | 950 | 1250 | 1250 | 1250 | 1100 | 1350-yil | 1400 | |
| 20℃ (μΩ*m) da qarshilik | 1.25 | 1.42 | 1.42 | 1.35 | 1.23 | 1.45 | 1.53 | |
| Zichlik (g/sm3) | 7.4 | 7.1 | 7.16 | 7.25 | 7.35 | 7.1 | 7.1 | |
| Issiqlik o'tkazuvchanligi (KJ/m*h*℃) | 52.7 | 46.1 | 63.2 | 60.2 | 46.9 | 46.1 | – | |
| Chiziqlar kengayish koeffitsienti (α*10-6/℃) | 15.4 | 16 | 14.7 | 15 | 13.5 | 16 | 16 | |
| Erish nuqtasi taxminan (℃) | 1450-yil | 1500 | 1500 | 1500 | 1500 | 1510-yil | 1520-yil | |
| Cho'zilish kuchi (N/mm2) | 580-680 | 630-780 | 630-780 | 630-780 | 600-700 | 650-800 | 680-830 | |
| Yorilish paytidagi cho'zilish (%) | >16 | >12 | >12 | >12 | >12 | >12 | >10 | |
| Maydonning o'zgarishi (%) | 65-75 | 60-75 | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 | |
| Bükme chastotasini takrorlash (F/R) | >5 | >5 | >5 | >5 | >5 | >5 | >5 | |
| Qattiqlik (HB) | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | |
| uzluksiz xizmat ko'rsatish vaqti (soat/℃) | – | ≥80/1300 | ≥80/1300 | ≥80/1300 | ≥80/1250 | ≥50/1350 | ≥50/1350 | |
| Mikrografik tuzilish | Ferrit | Ferrit | Ferrit | Ferrit | Ferrit | Ferrit | Ferrit | |
| Magnit xususiyatlari | Magnit | Magnit | Magnit | Magnit | Magnit | Magnit | Magnit | |



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