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1. The round aluminum rods are required to check the degree of roundness, whether there are defects such as hemming, misfiring, cracks, inclusions, kinks, and serious mechanical damage such as spotting, pitting, peeling, flashing, and corrosion spots.
2, round copper wire inspection surface is smooth, with or without triangular mouth, burrs, cracks, folds and inclusions and serious spots, pits, mechanical damage and other corrosion spots. It is worth mentioning that there is also the degree of oxidation of the copper wire. Generally, the golden color is normal, the reddish color is slightly oxidized, the surface is dark red, and the blue color is severely oxidized. Any severe oxidation occurs should be treated as waste. Aluminum wires have a lot of roads in the manufacturing process, and should be strictly controlled when overhead power lines are used.
3, the surface of the aluminum strand wire should be twisted tightly and neatly, can not be loose, single-line kinks, single-line jump or protruding and single-line breakage phenomenon. In addition, in the single-wire joint welding should be rounded and the welding has required anti-corrosion treatment, the increase in the joint is generally not allowed to exceed the diameter tolerance of two times, the single-joint two welds must also meet the standard spacing, the same single line two The welding area should not be less than 15 meters. The inner layer of the same layer of non-single single wire and two welding places should be no less than 5 meters, the outer layer should not be less than 15 meters. When the copper core is a single copper wire, welding is not allowed.
2, round copper wire inspection surface is smooth, with or without triangular mouth, burrs, cracks, folds and inclusions and serious spots, pits, mechanical damage and other corrosion spots. It is worth mentioning that there is also the degree of oxidation of the copper wire. Generally, the golden color is normal, the reddish color is slightly oxidized, the surface is dark red, and the blue color is severely oxidized. Any severe oxidation occurs should be treated as waste. Aluminum wires have a lot of roads in the manufacturing process, and should be strictly controlled when overhead power lines are used.
3, the surface of the aluminum strand wire should be twisted tightly and neatly, can not be loose, single-line kinks, single-line jump or protruding and single-line breakage phenomenon. In addition, in the single-wire joint welding should be rounded and the welding has required anti-corrosion treatment, the increase in the joint is generally not allowed to exceed the diameter tolerance of two times, the single-joint two welds must also meet the standard spacing, the same single line two The welding area should not be less than 15 meters. The inner layer of the same layer of non-single single wire and two welding places should be no less than 5 meters, the outer layer should not be less than 15 meters. When the copper core is a single copper wire, welding is not allowed.
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