A method for measuring electrical conductivity of copper-clad steel wire
A measurement method and technology of copper-clad steel, applied in the direction of measurement device, measurement of electrical variables, measurement of resistance/reactance/impedance, etc., to achieve the effect of accurate measurement, simple and easy method, and ensure product performance
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Embodiment 1
[0037] A method for measuring the electrical conductivity of a wire rod for copper-clad steel, comprising the steps of:
[0038] 1) Select copper-clad steel wire rod 1#, rolling diameter: The iron oxide scale is removed at both ends, and the surface quality of the wire is good;
[0039] Put the copper-clad steel wire 1# into the constant temperature of 25°C for more than 2 hours, control the temperature error range within ±0.3°C, and at the same time preheat the resistance meter and reset it to zero; along the length direction of the copper-clad steel wire 1# at about Measure the area of several cross-sections at equal intervals, and take the average value S, which is 33.696 (mm 2 ); Measure the measured resistance of the copper-clad steel wire rod 1# at temperature T, after ensuring that the clamps are stably and effectively clamping the copper-clad steel wire rod 1# two ends, after the resistance meter reading is stable, take the average value R, is 3.218×10 -3 (Ω); th...
Embodiment 2
[0047] A method for measuring the electrical conductivity of a wire rod for copper-clad steel, comprising the steps of:
[0048] 1) Select copper-clad steel wire rod 2#, rolling diameter: The iron oxide scale is removed at both ends, and the surface quality of the wire is good;
[0049] Put the wire rod 2# for copper-clad steel in a constant temperature of 40°C for more than 2 hours, control the temperature error range within ±0.3°C, and at the same time preheat the resistance meter and reset it to zero; measure along the length direction of wire rod 2# for copper-clad steel The area of several cross-sections, taking the average value S, is 78.448 (mm 2 ); Measure the measured resistance of described copper-clad steel wire rod 2# at temperature T, get the average value R, be 1.231 * 10 -3 (Ω); then measure the length L of the two potential ends of the copper-clad steel wire 2#, which is 800 (mm);
[0050] 2) The measured resistivity of the copper-clad steel wire rod at a...
Embodiment 3
[0057] A method for measuring the electrical conductivity of a wire rod for copper-clad steel, comprising the steps of:
[0058] 1) Select copper-clad steel wire rod 3#, rolling diameter: The iron oxide scale is removed at both ends, and the surface quality of the wire is good;
[0059] Place wire 3# for copper-clad steel in a constant temperature of -30°C for more than 2 hours, control the temperature error range within ±0.3°C, and at the same time preheat the resistance meter and reset it to zero; along the length direction of wire 3# for copper-clad steel, respectively Measure the area of several cross-sections, take the average value S, which is 23.746 (mm 2 ); measure the measured resistance of described copper-clad steel wire rod 3# at temperature T, get the average value R, be 5.496 * 10 -3 (Ω); then measure the length L of the two potential ends of the copper-clad steel wire 3#, which is 1500 (mm);
[0060] 2) The measured resistivity of the copper-clad steel wir...
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