How to distinguish the quality of wires?

How to distinguish the quality of wires? The PTFE wire editor will introduce it to you, and the main content is as follows:

1. Conductor

(1) The surface should be round and smooth, with a continuous and uniform coating.

(2) The surface of the conductor should not have defects such as triangular edges, burrs, cracks, twists, folds, inclusions, scars, pits, mechanical damage, corrosion spots, etc.

(3) The color should be uniform and bright, without excessive oxidation marks.

(4) The cross-sectional size of the conductor should be sufficient and not deficient.

2. Insulation and sheath

(1) The surface should be smooth and round, with a uniform luster, and there should be no visible lumps, bubbles, burnt materials, etc.

(2) The insulation (sheath) thickness is uniform and does not deviate from the core.

(3) There is no mechanical damage or flattening phenomenon.

(4) There should be no adhesion between the materials of each layer.

3. Other

(1) The shielding layer of metal should be continuous, stacked, and tightly wrapped, without sharp corners, curled edges, or leaks. (2) The cable pitch is suitable and uniform.

(3) The filling should be full and the cable should be round.