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1 round copper wire: check the surface is not light, with or without triangular mouth, burrs, cracks, folds and inclusions and serious spots, pits, mechanical damage such as 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 finely oxidized, the surface is dark red, and the blue color is serious oxidation. Any serious oxidation occurs should be treated as waste disposal. Aluminum wires have more roads in the manufacturing process and should be strictly controlled when overhead power lines are used.
2 round aluminum rod: need to check the degree of rounding, is not there hem, misfiring, cracks, inclusions, kinks and other defects and serious mechanical damage spots, pits, peeling, flash, corrosion spots and so on.
(3) The surface of the aluminum wire should be tightly twisted and structured so as to avoid slacking, kinking of the single wire, jump-out or protrusion of the single wire, and cracking appearance of the single wire. In addition, in the single-wire joint welding is about round and the welding has to do anti-corrosion treatment, the increase in the joint is generally not allowed to exceed the diameter tolerance of two times, single-joint two welding interval length also meet the standard, 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 wire and two welding places should not be less than 5 meters and the outer layer should be no less than 15 meters. When the copper core is a single copper wire, welding is not allowed.
4. Appearance planning standards for mining cables: The appearance of mining cables and the inspection of planning standards are generally interspersed or carried out together. The quality of products is good or bad. On the one hand, the function is not outstanding, but its appearance and planning standards The quality of the product also accounts for a certain proportion. The appearance of the product and the planning standards affect the function of the mining cable.
The appearance inspection of mine cables is not a good standard for the inspection of the first appearance. The inspection of the same product by different inspectors may lead to different conclusions. The appearance quality of mining cable products is very important. The first impression of quality is generally the appearance quality of the products. Therefore, all good products pay attention to the appearance quality. Regarding the appearance quality, the production workers and inspection personnel must not ignore the quality of appearance. , to be strictly controlled to ensure the appearance of quality.