Wire and cable extrusion machine works

Pressing process. The compaction process of the round stranded conductor is three vertical pressings, four horizontal pressing pressures; two pressing pressures of 80%; four pressing wheels play a rounding role and the pressing pressure is 20%; circular Compared with non-compacted conductors, pressing conductors can be reduced by 2% to 17% in outer diameter, and fill factor (regular twisting) can be increased from 75% to 90% to 93%. Sector-shaped stranded conductor 25~50mm2 can be pressed vertically only once; 70mm2 and above conductors are stranded and pressed in three layers, and the control cable for mining is pressed vertically, horizontally, vertically and firstly. The volume is 85%. The second line starts the shaping (both sides), and the third line of mine cables used in mine cables is stereotyped; the fill factor of the compacted fan-shaped conductor can reach 90%-93%.

Comparison between pressed conductors and non-compacted conductors:

Process characteristics: improve efficiency, reduce consumption, and have a stable structure.

"Electric field strength: It can act as a uniform electric field.

Mining communications cable flexibility: a drop.

The amount of structural material: reduced. Plastic cable saves about 8% of material usage.

Extrusion
<br> <br> extruder works by using a specific shape of the screw, in a heated rotating barrel, forward extrusion hopper fed by the plastic, the plastic uniformly plasticized (i.e., melt), through a die And different shapes of the mold, so that the plastic extrusion into a continuous shape of the various shapes required for the material.

During the extrusion process, plastic will go through the following three stages:

Plasticization stage: also known as the compression stage. Completed in the barrel. Through the rotation of the screw, the plastic changes from solid granular to plastic viscous fluid.

Forming stage: in the nose. By the action of the screw rotation and pressure, the viscous fluid is pushed toward the machine head and passes through the die in the machine head to form the viscous fluid into the desired extruded materials of various sizes and shapes. The die of the nose forms a forming effect rather than a shaping effect.

Setting stage: Perform in a cooling tank. After the plastic cools down, it changes the plastic state into a stereotypical solid state.

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