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这个加热丝的材料没有改哦' j- C8 j) Y5 \' f A9 P
) n0 \* N6 r8 t R; X4 u6.2 Ignition source4 E$ k" c$ `2 Y# f$ {" o2 ^
NiCr (80/20) heater wire, having a normal composition of 80 % nickel and 20 %
! M+ e8 L6 g7 q' d- Y% vchromium, 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.( c* `. L0 K( ^
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NOTE NiCr (80/20) heater wire has a nominal cold resistance of approximately 5,25 Ω/m. |
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