Karmasaizi
Waya: 0.01mm-10mm
Ribhoni: 0.05*0.2mm-2.0*6.0mm
Chidimbu: 0.5*5.0mm-5.0*250mm
3. Pfuma yeKarma
| zita | kodhi | Kuumbwa Kwakakosha (%) | Zvakajairika | |||
| Cr | Al | Fe | Ni | |||
| Karma | 6J22 | 19~21 | 2.5~3.2 | 2.0~3.0 | bal. | JB/T 5328 |
| Zita | Kodhi | (20ºC) Kuramba (μΩ.m) | (20ºC) Kudzivirira kweTemp Coeff.Yekumira (αX10-6/ºC) | (0~100ºC) ThermalEMF vs. Copper (μv/ºC) | Kushanda zvakanyanya Kupisa (ºC) | (%) Kureba | (N/mm2) Kusimba Simba | Zvakajairika |
| Karma | 6J22 | 1.33±0.07 | ≤±20 | ≤2.5 | ≤300 | >7 | ≥780 | JB/T 5328 |
4. Zvinhu zvakasiyana zvewaya yekudzivirira Karma
1) Kutanga neNickel Chromium electric heat wire Class 1, takatsiva mamwe maNi neAl nezvimwe zvinhu, uye nokudaro takawana material ekudzivirira akarurama ne resistance temperature coefficient yakawedzerwa uye heat electromotive force inopesana nemhangura.
Nekuwedzera kweAl, takabudirira mukuwedzera simba rekudzivirira vhoriyamu neka1.2
kupfuura Nickel Chromium electric heat wire Class 1 uye simba rekudhonza rakapetwa ka1.3.
2) Chiyero chechipiri chekupisa β cheKarmalloy wire KMW chidiki kwazvo, - 0.03 × 10-6/ K2,
uye curve yekudzivirira tembiricha inozoonekwa semutsetse wakatwasuka mukati mehuwandu hwakakura hwetembiricha.
Saka, chiyero chekupisa chakagadzirirwa kuva chiyero chekupisa chiri pakati pe23 ~ 53 °C, asi 1 × 10-6/K, chiyero chekupisa chiri pakati pe0 ~ 100 °C, chinogonawo
shandiswa pakuenzanisa tembiricha.
3) Simba remagetsi rinorwisa mhangura riri pakati pe1 ~ 100 °C dikiwo, riri pasi pe + 2 μV/K, uye rinoratidza kugadzikana kwakanaka kwemakore mazhinji.
4) Kana ichi chichifanira kushandiswa sechinhu chinodzivisa kupenya, kurapwa nekupisa kushoma kunodiwa kubvisa kukanganisa kwekugadzirisa sezvazvakaita paManganin wire CMW.
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