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Tinned wire bare copper wire test

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After finished the operator will pull all production of copper wire wrapping station, the goods seized shall UL1095 electronic line, UL1007 electronic line, UL1015 electronic cable wire to get the packing stage, a rigorous test of its quality, specific test standard should be strictly Follow these steps:
First, the appearance test: shall fill UL1007 electronic cable wire spools down to the packing table, stand with one hand a piece of paper put in the position of 1-2cm from the copper wire, the other hand will UL1015 electronic wire spool copper rolling week whether the visual appearance of the following criteria:
1) smooth surface, no black line, no messy lines, no pitting, no oxidation, no fight flowers, no scratches bumps, no tinned bad (stick tin, tin-drain), no slash, no hand joints, no fingerprints.
2) UL2651 gray cable is good, even without pile side, under side (low side high side or both sides of the high-low), free from stocks.
3) The tension is moderate but loose or too tight.
4) The copper surface without sticking ash phenomenon and scroll (too full)
Second, the diameter test: when the diameter in accordance with the national common standards, customers have special requirements according to their requirements strictly controlled. Specific test procedure is as follows:
1), the first commissioning micrometer whether zero.
2), will examine the copper wire into the micrometer cramping, the appropriate force (the force can not be too heavy or too light) Turn micrometer ends.
3) When you hear the ring three times micrometer can be observed after its reading.
4), and so forth should be tested two or three times before reading agreement (with a copper wire) can not be detected in the same position every time, should be sub-test.
5), more than 0.2cm diameter copper in copper test different interfaces, in order to avoid flat line.
Third, the elongation test: elongation are asking accordance with national standards, when customers have special requirements according to their demanding control, follow these steps:
1) Open the elongation tester switch.
2) observe the left of the folder is in the original position, shown whether the instrument readings to zero, as the left is not in the original folder location sensors, instrument readings displayed not zero, should immediately resume button and press zero key.
3) Gently open the folder, the end of the upcoming induction into the copper wire test folder, pressure sensing clip, and then gently straighten the wire and the other end into a folder within another sensing, pressure sensing clip The wire clamp firmly, press the test button.
4) The folder to be induced after the copper strands break and stop moving, observe elongation reading its display is detected copper wire.
Fourth, the resistivity test: resistivity requirements in accordance with national standards specific test steps are as follows:
1) Open the resistivity tester's power switch.
2) The folder to grip the sides of the sensor, observe the reading is zero.
3) If the reading instrument display is 0, the upcoming test 1m long copper wire were taken by two induction clamp onto the wire ends of the copper wire can not be detected with any metal objects to touch, press the test key.
4) Observe reading its display, and take readings of resistivity is calculated is calculated as follows:
Resistivity = 0.7854 ** * indoor temperature readings coefficients / 1000
Fifth, after the completion of the survey in the previous step, qualified QC chapter cover.
Round copper Model:
TR ----- soft round copper wire hard round copper TY -----
TXR ----- tinned round copper TYT ----- special hard round copper wire
TXRH ----- solderable tinned round copper wire