The most common problems of cable materials

The power cable industry is a large-scale pillar industry in China. The manufacturing process requires very high production standards to maintain the safe operation of the whole industrial system. Therefore, the majority of power cable manufacturers need to conduct very strict review and purchase of cable production materials.

Now let's introduce the common problems of cable materials and provide some help for the selection of materials.

1. Heat shrinkable sealing cap: inaccurate specification and size, poor material memory, long-term burning shrinkage, poor strength, etc.

2. Copper strip: uneven thickness, oxidation discoloration, insufficient tension, lotus leaf edge, insufficient softening, hard, many short ends, poor connection, falling off of paint film or zinc layer, etc.

3. Steel wire: the outer diameter is too large, the zinc layer falls off, the galvanizing is insufficient, there are many short heads, the tension is insufficient, etc.

4. Copper rod: made of recycled miscellaneous copper, oxidized and discolored surface, insufficient tension, out of roundness, etc.

5. XLPE insulating material: short scorch resistance time, easy early crosslinking, etc.

6. Silane crosslinking material: poor control of extrusion temperature, poor thermal elongation, rough surface, etc.

7. Halogen free adhesive flame retardant tape: easy to break, wrinkle of tape disc, wire drawing, poor flame retardancy, smoke, etc.

7. PP filling rope: poor material, uneven diameter, poor connection, bumps, etc.

8. PVC plastic: many impurities, unqualified thermal weight loss, pores in the extruded layer, difficult to plasticize, incorrect color, etc.

9. Glass ribbon: thick, drawn, low weaving density, mixed with organic fiber, easy to tear, etc.

10. PVC tape: too thick, insufficient tension, many short ends, uneven thickness, etc.

11. Fire resistant mica tape: delamination, insufficient tension, sticky, wrinkling of tape disc, etc.

12. Alkali free rock wool rope: uneven thickness, insufficient tension, many joints, easy powder falling, etc.

13. PE filler strip: hard, easy to break and unequal radian.

14. Non woven fabric: the actual thickness is not correct, the tension is not enough, the width is uneven, etc