Zhujiang Cable teaches you Guangzhou cable to distinguish the quality of wire and cable

High-quality copper cables use high-purity oxygen-free copper, the copper core is bright in color, and the poor copper wire has a dull surface. Extrusion machine

Second, the plastic plastic uses high-quality virgin plastic, which has good bending performance, and the bending of the cable will not produce texture. The poor recycled plastic will have obvious texture after several bendings, and break after many bendings. --Cable equipment

3. It may be more difficult to detect the full meter by hands and feet on the meter, because the customer generally does not have the equipment to actually measure the meter, and the same weight measurement method can be used to know whether the cable is full of meter. Or it is also a good way to have the rice mark printed in the factory, but it should be noted that there is no way to print the rice mark on a wire with a diameter of less than 5mm.

Fourth, the square copper is a kind of precious metal. If you lose a little in the copper diameter, you can reduce a lot of raw material costs. In this case, you need to use a micrometer to measure the diameter of the copper wire. If you don't have a micrometer, the easier way is to weigh the entire roll of wire to see if it is much lighter than a good quality cable. Or you can refer to the nominal weight given by the factory. The nominal weight given by some factories is too low, so naturally the product quality cannot be guaranteed.

5. Accessories In order to ensure the roundness of the cable, for multi-core cables, fillers will be added to the core, and the thickness of the sheath will be thicker. If the cable is not round, it means that the filler is very large. Less, and the sheath is made thin. --Cable equipment

6. Bundling Multi-stranded copper wire will be bundled during production to improve the tensile performance, roundness, electrical performance and tightness of the copper core with the insulating layer. However, because the bundled wire will increase the amount of copper used, Therefore, many factories omit this step. The way to distinguish is to cut the core wire of the cable to see if the copper wires inside are regularly twisted together.

7. Braiding a cable with a copper mesh braid. The braid accounts for a large part of the cost of the cable's raw materials. The coverage of the braid directly affects the electrical performance of the cable. At the same time, the tight braid can increase the strength of the cable. The cable reduces the degradation of the electrical performance of the cable in the bent state. Therefore, to see whether the braided layer has a high coverage rate and a uniform and fine weave is an important means to distinguish good and bad cables.