Design and Manufacture of Steel Core Aluminum Stranded Wire

The production of the wire and the twisting of the strand should be such that there should be no obvious twist or loose strands after the wire is cut. When the steel core is cut and the aluminum wire is stripped from the steel core according to the requirements of the joint, the steel core should be able to be reassembled without difficulty, and it is easy to hold the connecting pipe from the wire cutting end into the steel core with one hand. Similarly, aluminum wire forming should be easy to recombine aluminum wire, and easy to hold the connecting pipe from the cutting end of the wire into the aluminum wire with one hand.

Refined conductors should reflect the highest quality of modern conductor manufacturing in terms of material, process and design. After the manufacture, the shape and surface of the conductor should be uniform cylinder, and this state should be maintained until the wire is installed. In the manufacture and assembly of goods, the process and processing should be the same as the most modern level. The line in the technical conditions should be suitable for both tensioning and slacking. When the wire is normally tightened, the seller shall be responsible for the timely replacement when any wire has problems such as loose stock.

When the wire is subjected to 30% of the rated maximum tension and is not subjected to tension, the allowable reduction of the circumference does not exceed 2%. The surface of the wire should be free of defects, flash, wear, and other non-uniformities or defects that increase radio interference and corona loss. When the wire is subjected to 50% of the rated maximum tension, the wire and surface shall maintain its cylindrical shape and shall not cause any part to move relative to the improper position, thus affecting the longitudinal finish of the wire.

When the wire is subjected to 50% of the rated maximum tension, the longitudinal inspection of the wire shall be applied to the ruler so that the straight side of the ruler rests on the wire in parallel, and the change between the wire and the ruler is measured with a feeler gauge. The length of the ruler should be at least 2 times the distance between the outer faces of the wires, and the variation between the faces of the wires and the ruler should not exceed 0.5 mm. When the wire in a reel is repeatedly exposed to a burst, even if the protruding portion is less than 0.5 mm, the seller is responsible for the timely replacement.