Copper stranded wires are two insulated copper wires twisted together at a certain density, which can effectively reduce signal interference. Copper stranded wire is very common in daily life, mainly used for home appliance repair and electric welding machinery. The quality of the copper stranded wire affects the process of the cable. If you choose unqualified products to produce wires and cables, it may cause serious safety accidents. So how to choose high-quality copper stranded wire?
1. Appearance
Observe whether there are obvious damage and scratches. The high-quality copper stranded wire has a well-proportioned gloss, no black spots and cracks, and no obvious oxidation reaction to cause discoloration.
2. Specifications
Observe the dimensions and specifications of the copper stranded wire. Generally, the drawing of the copper stranded wire must be within the specified range and cannot exceed the process standard, otherwise it will be regarded as an invalid stranded wire. The single wires that make up the twisted wires must meet the characteristics of uniformity and order, and comply with the rules of the process flow.
3. Structure
Observe the structure distribution of the stranded wire, whether there are short wires, missing wires, loose strands, or stranded strands.
4. Welding process
Pay attention to the reliability of the welding process when buying copper stranded wire. The welded joints should be neat, flat, rounded, and hands should not be pierced. The diameter of the welding head should generally not exceed 0.2mm, and the welding of two adjacent copper strands should keep a certain distance.
5. Cross section of copper core
Observing the cross-section of the copper core, the high-quality copper material is bright in color and soft in color, the copper core is reddish in yellow, and the color of inferior copper is white in yellow.
6. Commodity label
Understand whether the relevant certificates are complete; whether there are trademarks, specifications, voltages and other information printed on the cables.
KUKA Cable specializes in the production of solar power cords, garden cables, standard cables, and special cables. The company has passed ISO9000UL certification, CCC certification, TUV certification, etc., and has certain advantages in price and product quality.
