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这个加热丝的材料没有改哦" ~5 I# l$ J8 u" g
5 W6 C& M/ ~/ l' Q$ ~% U0 T, h6.2 Ignition source* M8 X4 g4 \% c, x. J2 j
NiCr (80/20) heater wire, having a normal composition of 80 % nickel and 20 %; }9 M* k# `# ^" ?) g& Z
chromium, having a diameter of 0,5 mm+ 0,020mm and a minimum length of 250 mm.This heater wire is coiled around the centre portion of the test specimen by applying five turns.1 V1 ` s' j Y# V0 S7 m' `
8 w; o& m" L& Y, vNOTE NiCr (80/20) heater wire has a nominal cold resistance of approximately 5,25 Ω/m. |
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