Meatotino a Karma
igoa | code | Vaega Autu (%) | Tulaga
| |||
Cr | Al | Fe | Ni | |||
Karma | 6J22 | 19–21 | 2.5~3.2 | 2.0~3.0 | polo. | JB/T 5328 |
Igoa | Code | (20ºC) Tete'e (μΩ.m) | (20ºC) Temp. Coeff.O Tetee (αX10-6/ºC) | (0~100ºC) ThermalEMF vs. Kopa | Max.faigaluega Temper.(ºC) | (%) Fa'aumiumi | (N/mm2) Tensile Malosi | Tulaga |
Karma | 6J22 | 1.33±0.07 | ≤±20 | ≤2.5 | ≤300 | >7 | ≥780 | JB/T 5328 |
4. Tulaga iloga o le uaea tetee a Karma
1) Amata i le Nickel Chromium uaea vevela eletise Vasega 1, matou suia nisi o le Ni ma
Al ma isi elemene, ma faʻapea ona ausia se mea faʻamaonia saʻo ma faʻaleleia
tete'e o le vevela coefficient ma le vevela eletise malosi e faasaga i le kopa.
Faatasi ai ma le faʻaopoopoga o Al, ua matou manuia i le faia o le voluma resistivity 1.2 taimi sili atu
nai lo Nickel Chromium uaea vevela eletise Vasega 1 ma le malosi tensile 1.3 taimi sili atu.
2) O le lua vevela coefficient β o Karmalloy uaea KMW e laʻititi lava, - 0.03 × 10-6 / K2,
ma o le pupuni o le vevela e foliga mai e toetoe lava o se laina sao i totonu o le lautele
fua vevela.
O le mea lea, o le fua fa'atatau o le vevela o lo'o fa'atulagaina e avea ma fua fa'atatau o le vevela i le va
23 ~ 53 °C, ae 1 × 10-6/K, o le averesi o le vevela coefficient i le va o 0 ~ 100 °C, e mafai foi
e fa'aaogaina mo le fa'atatau o le vevela.
3) Electromotive malosi faasaga i kopa i le va o le 1 ~ 100 °C e laʻititi foi, lalo + 2 μV / K, ma
fa'aalia le mautu lelei mo se vaitaimi o le tele o tausaga.
4) Afai e faʻaaogaina lenei mea e avea o se mea e teteʻe ai, o le vevela vevela vevela
manaʻomia e faʻaumatia faʻalavelave faʻagasologa e pei lava o le tulaga o le Manganin wire CMW.
Ituaiga Insulation
Insulation-enamelled Igoa | Tulaga vevelaºC(taimi galue 2000h) | Code Igoa | GB Code | ANSI. ITIGA |
Polyurethane enamelled uaea | 130 | UEW | QA | MW75C |
Uaea enamel polyester | 155 | PEW | QZ | MW5C |
Polyester-imide uaea enamelled | 180 | EIW | QZY | MW30C |
Polyester-imide ma polyamide-imide uaea fa'apipi'i fa'apipi'i lua | 200 | EIWH(DFWF) | QZY/XY | MW35C |
Polyamide-imide uaea enamelled | 220 | AIW | QXY | MW81C |