Karmaboholo
Terata: 0.01mm-10mm
Ribone: 0.05*0.2mm-2.0*6.0mm
Sekotwana: 0.5*5.0mm-5.0*250mm
3. Thepa ea Karma
| lebitso | khoutu | Sebopeho se Seholo (%) | E tloaelehileng | |||
| Cr | Al | Fe | Ni | |||
| Karma | 6J22 | 19-21 | 2.5~3.2 | 2.0~3.0 | bal. | JB/T 5328 |
| Lebitso | Khoutu | (20ºC) Ho hanyetsa (μΩ.m) | (20ºC) Khanyetso ea Mocheso oa Coeff.Oa Khanyetso (αX10-6/ºC) | (0~100ºC) ThermalEMF khahlanong le Koporo (μv/ºC) | Ho sebetsa ka botlalo Mocheso (ºC) | (%) Ho lelefatsa | (N/mm2) Thapo Matla | E tloaelehileng |
| Karma | 6J22 | 1.33±0.07 | ≤±20 | ≤2.5 | ≤300 | >7 | ≥780 | JB/T 5328 |
4. Likarolo tse ikhethang tsa terata ea ho hanyetsa Karma
1) Ho qala ka terata ea motlakase ea Nickel Chromium Sehlopha sa 1, re nkile sebaka sa tse ling tsa Ni ka Al le likarolo tse ling, 'me kahoo ra fihlela thepa ea ho hanyetsa ka ho nepahala ka coefficient e ntlafetseng ea mocheso oa ho hanyetsa le matla a motlakase a motlakase khahlanong le koporo.
Ka ho eketsoa ha Al, re atlehile ho etsa hore ho hanyetsa molumo ho be hoholoanyane ka makhetlo a 1.2.
ho feta terata ea motlakase ea mocheso ea Nickel Chromium Sehlopha sa 1 'me matla a ho thaepa a phahame ka makhetlo a 1.3.
2) Koefficient ea mocheso oa bobeli β ea terata ea Karmalloy KMW e nyane haholo, - 0.03 × 10-6/ K2,
'me mothapo oa mocheso oa khanyetso o fetoha mola o otlolohileng ka har'a mocheso o pharaletseng.
Ka hona, tekanyo ea mocheso e behiloe hore e be tekanyo ea mocheso e tloaelehileng pakeng tsa 23 ~ 53 °C, empa 1 × 10-6/K, tekanyo ea mocheso e tloaelehileng pakeng tsa 0 ~ 100 °C, le eona e ka 'na ea
e amoheloe bakeng sa tekanyo ea mocheso.
3) Matla a motlakase khahlanong le koporo a pakeng tsa 1 ~ 100 °C le ona a manyane, a ka tlase ho + 2 μV/K, mme a bontsha botsitso bo botle ka nako ya dilemo tse ngata.
4) Haeba sena se tla sebelisoa e le thepa ea ho hanyetsa ka nepo, ho hlokahala kalafo ea mocheso o tlase ho felisa ho sotha ha ts'ebetso joalo ka ha ho le joalo ka terata ea Manganin CMW.
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