Power cord manufacturing process (2)

1. Inner sheath of the power cord

In order to maintain the insulated wire core from being scratched by the armor, it is necessary to properly maintain the insulation layer. The inner protective layer is divided into an extruded inner protective layer (isolation sleeve) and a wrapped inner protective layer (cushion). The wrapping cushion layer replaces the binding tape and is synchronized with the cable-forming process.

2. Power line armor

Laid on the underground power line, the task can accept the inevitable positive pressure effect, and the inner steel belt armor structure can be selected. The power line is laid in a place with both a positive pressure effect and a tensile effect (such as water, vertical shafts, or soil with large drops).

3. Outer sheath of the power cord

The outer sheath is a part of the structure that maintains the insulation of the power cord to prevent corrosion of the elements. The primary effect of the outer sheath is to improve the mechanical strength of the power cord, protection against chemical attack, moisture, and water infiltration, and prevention of burning the power cord. According to the divergence of the power cord, an extruder should be used to directly extrude the plastic sheath.

Brief introduction of universal rubber plastic power cord

1. Laying occasions and methods: indoor open and communication roads, tunnel walls or overhead laying; outdoor overhead laying, iron pipe or plastic pipe laying, electrical equipment, instruments, and radio installations are all fixed laying; plastic Sheathed power cables can be laid directly in the...