Hantida Karma
| magac | kood | Halabuurka ugu Muhiimsan (%) | Heerka Caadiga ah
| |||
| Cr | Al | Fe | Ni | |||
| Karma | 6J22 | 19~21 | 2.5~3.2 | 2.0~3.0 | bal. | JB/T 5328 |
| Magaca | Koodhka | (20ºC) Iska caabin (μΩ.m) | (20ºC) Heerkulka. Coeff. Of Resistance (αX10-6/ºC) | (0~100ºC) ThermalEMF vs. Naxaas | Ugu badan.shaqaynta Heerkulka (ºC) | (%) Kordhinta | (N/mm2) Gariir Xoog | Heerka Caadiga ah |
| Karma | 6J22 | 1.33±0.07 | ≤±20 | ≤2.5 | ≤300 | >7 | ≥780 | JB/T 5328 |
4. Astaamaha gaarka ah ee fiilada iska caabbinta Karma
1) Laga bilaabo fiilada kulaylka korontada ee Nickel Chromium Class 1, waxaan ku beddelnay qaar ka mid ah Ni-ga
Al iyo walxo kale, sidaas darteedna waxay gaareen agab iska caabin sax ah oo la hagaajiyay
isku-dhafka heerkulka iska caabbinta iyo xoogga korontada kulaylka ee ka dhanka ah naxaasta.
Marka lagu daro Al, waxaan ku guuleysanay inaan ka dhigno iska caabinta mugga 1.2 jeer mid ka weyn
Fiilada kulaylka korontada ee Nickel Chromium Fasalka 1aad iyo xoogga jiidista oo ka badan 1.3 jeer.
2) Heerkulka labaad ee β ee fiilada Karmalloy KMW aad ayuu u yar yahay, - 0.03 × 10-6/ K2, qalooca heerkulka iska caabbintana wuxuu isu beddelaa ku dhawaad khad toosan oo ku dhex jira baaxad ballaaran.
heerkulka kala duwan.
Sidaa darteed, isku-dhafka heerkulka waxaa loo dejiyay inuu noqdo isku-dhafka heerkulka celceliska ee u dhexeeya
23 ~ 53 °C, laakiin 1 × 10-6/K, celceliska isku-dhafka heerkulka ee u dhexeeya 0 ~ 100 °C, ayaa sidoo kale laga yaabaa
loo qaato heerka heerkulka.
3) Awoodda korontada ee ka dhanka ah naxaasta inta u dhaxaysa 1 ~ 100 °C sidoo kale waa yar tahay, ka hooseysa + 2 μV/K, iyo
waxay muujisaa xasillooni aad u fiican muddo sannado badan ah.
4) Haddii tan loo isticmaalo sidii walxo iska caabin sax ah, daaweynta kulaylka heerkulka hooseeya waa
waxaa loo baahan yahay in la baabi'iyo qalloocinta habaynta sida kiiska siligga Manganin CMW.
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