How can we really distinguish the good quality and secondary quality of cable and wire
Release time:
2020-01-07
Foot meters may be more difficult to detect in meters, because customers generally do not have the equipment to actually measure meters, and the same weighing method can be used to know whether the cable is full meters. Or it is also a good way to print the meter mark when the factory produces, but it should be noted that there is no way to print the meter mark for lines with a diameter of less than 5mm.
Foot meters may be more difficult to detect in meters, because customers generally do not have the equipment to actually measure meters, and the same weighing method can be used to know whether the cable is full meters. Or it is also a good way to print the meter mark when the factory produces, but it should be noted that there is no way to print the meter mark for lines with a diameter of less than 5mm.
Foot copper is a precious metal, if the copper diameter on the loss of a little, can reduce a lot of raw material costs, so you need to use a micrometer to measure the diameter of copper wire. If you don't have a micrometer, then an easier way is to weigh the entire coil of wire to see if it is much lighter than a high-quality cable. Or you can refer to the nominal weight given by the factory. Some factories give the nominal weight is low, naturally can not guarantee the quality of the product.
How to identify the internal quality of wire and cable:
High-quality copper cables use high-purity oxygen-free copper, copper core bright color, poor copper wire surface is dim.
Extruder
Plastic plastic using high quality virgin plastic, bending performance is good, the cable bending will not produce texture, poor recycling plastic bending several times will appear obvious texture, bending many times after fracture.
Cable equipment
Accessories In order to ensure the roundness of the cable, filler will be added to the core of the multi-core cable, and the thickness of the sheath is relatively thick. If the cable in hand is not round, it means that the filler is added very little and the sheath is thin.
Cable equipment
The multi-strand copper wire will be bundled during production to improve the tensile performance, roundness, electrical performance and tightness with the insulating layer of the copper core. However, because the bundling wire will increase the amount of copper used, many factories have omitted this step. The way to distinguish is to cut open the core wire of the cable and see if the copper wires inside are regularly twisted together.
Braided with copper mesh braided cable, braided layer accounted for a large part of the cost of cable raw materials, and the coverage of the braided layer, directly affect the electrical performance of the cable, at the same time, the tight braided layer can increase the strength of the cable, wire and cable to reduce the decline of electrical performance of the cable in the bent state. Therefore, to see whether the braided layer has high coverage and uniform and fine weaving is an important means to distinguish the advantages and disadvantages of cables.
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