Such as copper clad aluminum, copper clad aluminum, magnesium alloy, copper clad steel, copper clad iron, etc .; high imitation false copper wire, it is multi-strand copper wire according to a certain proportion of copper-clad aluminum-magnesium alloy, other materials After copper plating after processing the material, the general price is much higher than the previous one is really copper in the inside; non-compliance of the copper wire, the material is not made of oxygen-free copper wire drawing, transmission performance is poor, or is the core Not enough.
More and more fake market, so that consumers are sad. For weak cable, many businesses are the name of the name of the copper in the sale, but the actual is hungry to sell dog meat. As we understand that the market is fake weak cable is divided into the general fake copper wire, high imitation fake copper wire, not compliance copper wire.
Copper wire, copper alloy, copper clad iron, etc .; high imitation false copper wire, it is multi-strand copper wire in a certain proportion of copper-clad aluminum-magnesium alloy, other materials After copper plating after processing the material, the general price is much higher than the previous one is really copper in the inside; non-compliance of the copper wire, the material is not made of oxygen-free copper wire drawing, transmission performance is poor, or is the core Not enough.
Opposite so many fake cable products, in the process of selling weak cables, whether online or offline, many customers will ask to identify the quality of weak cable problems, then how to identify it?
1. Sheath: the surface can be seen inside the compilation of a regular "uneven", indicating that the processing technology is good, will not produce a relative sliding, is a good cable. The appearance of smooth, do not see the compaction of the compilation of the "uneven", hand pinch jacket is loose, is poor cable;
2. Check the shielding network: whether the number of copper mesh compilation, check the solderability, tinned copper wire scraping inside is not copper, aluminum-magnesium alloy line hardness is significantly greater than the copper wire; Uneven, with the insulation layer is not tight, such as poor cable;
3. Check the core: syv cable diameter of 0.78-0.8mm, sywv cable is 1.0mm; Recently there has been a syv75-5 core diameter is 1.0mm cable, the characteristic impedance of this cable, certainly not 75 ohms, Not applied to 75 ohm transmission system;
4. Check the core and insulation layer of the adhesion: oblique cut insulation layer, pull the core line according to the direction of stripping to see the core and the insulation layer is not covered with process materials; good cable has a greater adhesion, poor The cable is not covered;
5. Longitudinal tensile test: take one meter cable, layered stripping core, insulation, shielding, foreign households sets, the remaining 10 cm long. The method is: two hands, respectively, the cable adjacent to the two layers, in the opposite direction of the pull; good cable the general power of the fixed, poor cable can easily pull out - elevator cable This is very important, many so-called "Elevator dedicated cable" there are problems in this area.