Wires and cables are made by drawing, twisting, and cladding. The more complex the model and specification, the higher the repeatability.
In metal pressure machining, the metal cross section is compressed and the required cross section shape and size is obtained by forcing the metal through the die (pressing wheel) under the action of external force.
Drawing process is divided into single wire drawing and stranded drawing.
In order to improve the softness of wires and cables, overall degree, let more than 2 single wire, according to the specified direction interweave together known as stranded.
Wring technology: conductor wring, cabling, weaving, steel wire armoring and winding.
According to different performance requirements for wires and cables, special equipment is used to cover the conductors with different materials. Coating process:
A. Extrusion: rubber, plastic, lead, aluminum and other materials.
B. Longitudinal bag: rubber, corrugated aluminum tape material.
C. Wrapping: strip paper tape, mica tape, alkali-free glass fiber tape, non-woven cloth, plastic tape, etc., linear cotton yarn, silk and other fiber materials.
D. Dip coating: insulating paint, asphalt, etc.