Supper Spring Right Angle MICRO HDMI cable

Introduction of the basic knowledge of the power cable

1. Power wire copper, aluminum mono-wire drawing

Power cord commonly used copper, aluminum rod, at room temperature, the application of wire drawing machine through one or several lines of tensile mold mold hole, so that its section reduction, length added, strength progress. Drawing is the first process of each wire and cable company, and the primary process parameter of drawing is the mold matching technology.

2. Single-wire annealing of the power cord

Copper and aluminum single wire is heated to the inevitable temperature, with the method of recrystallization to improve the toughness of the single wire, reduce the strength of the single wire, in order to meet the requirements of wire and cable for conductive wire core. The key of the annealing process is the oxidation of the extinct copper wire.

3. Hanging system of the power wire conductor

In order to improve the flexibility of the power wire in order to lay the device, the conductive wire core receives multiple single wire strands. From the stranded way of the conductive wire core, it can be divided into regular stranded and non-regular stranded. Non-regular twisting is divided into bundle hanging, concerted twisting, special hanging and so on, etc. In order to reduce the occupation area of the wire and reduce the geometric size of the power cord, the stranded conductor also adopts the compaction mode, so that the popular circle variation into a semicircle, fan, tile and compression circle. This conductor is first used on the power cord.

4. Insulation and extrusion of the power cord

Plastic power cord first use of unpacked solid insulation layer, plastic insulation extrusion primary technical requirements: (1) Partial pain degree: the bias value of extrusion insulation thickness is the main marker of the performance degree of crowded work art. The construction size and bias value of large products have clear rules in the specification. (2) Lubrication degree: the appearance of the squeezed insulation layer requires lubrication, and shall not show the poor quality problems of coarse appearance, burning and impurities (3) Density: the cross section of the extrusion insulation layer should be dense and strong, and prohibit the visible pinhole, and the existence of root bubbles.

5. The power cord is wired

About the multi-core power cord in order to wrap the pipe molding degree, reduce the shape of the power cord, the ordinary need to be twisted into a round. The mechanism of twisting is similar to that of conductor twisting, because the joint diameter is large, most of the non-torsion method. The technical requirements of the cable: one is a very different insulation wire core turning over and lead to the twist of the cable bending; the second is to avoid the insulation layer is scratched. Large partial cable in the cable along with the completion of other two processes: one is filling, the cable after the round and unchanged; one is binding, the cable core is not lax.

6. Inner cover of the power cord

In order to maintain the insulation core from being damaged by armor, the insulation layer is required, inner layer: crowded inner layer (isolation cover) and winding inner layer (cushion). Simultaneous operation of winding cushion layer replacing binding belt with cable forming process.

7. The Power cord is equipped with armor

Laying in the underground power line, the task can accept the inevitable positive pressure effect, the internal steel belt armor structure can be selected. The power line is laid in places with both positive pressure effect and tensile effect (such as water, vertical shaft or soil with large drop), with the configuration of inner steel wire armor.

8. Outer sheath of the power cord

External sheath is the insulation layer of the power cord to avoid corrosion of the elements. The primary effect of the outer sheath is to improve the mechanical strength of the power cord, prevent chemical erosion, moisture-proof, waterproof immersion, prevent the power cord combustion and other talents. According to the difference of the power cord, the extrusion machine directly squeezed the plastic sheath. I