- Jun 10, 2020-
In the production process of silicone rubber cables, appearance defects often appear, such as the surface is not smooth; there are clinker particles (early vulcanized rubber particles) or impurities on the surface; scratches and abrasions on the surface of the wire and cable; Hemp pattern etc. The following are five common causes of appearance defects of silicone rubber cables collected by the cable network from the network, for reference by the majority of silicone rubber cable manufacturers:
1. The die sleeve bearing wire is too long or too short, the die mouth is not smooth and the aperture is too large; the temperature of the machine head, die mouth or body is low; the rubber plasticity is small, etc., which may cause the surface of the silicone rubber cable to be uneven.
2. The supplied rubber is not clean and contains impurities; the scorch time of the rubber is too short; the temperature of the extruded rubber body, head or die is too high; the rubber in the head is not flowing smoothly, and there are dead corners of rubber stuck; the screw is not smooth , Viscose, etc. may cause clinker particles (early vulcanized rubber particles) or impurities on the surface of the silicone rubber cable.
3. The mold sleeve is not smooth and has no chamfers; there are impurities or cooked rubber particles blocking the mold opening; dragging the tube in the vulcanized tube to scratch; the small diameter of the rubber gasket at the outlet of the vulcanizing tube may cause scratches on the surface of the silicone rubber cable. , Bruises.
4. The aperture of the die sleeve is too large; the gap between the outer strands of the conductive core and the monofilament is too large, and the outer diameter of the cable core is uneven; the rubber has small plasticity and poor viscosity; there are impurities in the rubber; the distance between the molds is small, Low pressure may cause the surface of the silicone rubber cable to collapse.
5. The aperture of the die sleeve is too small; the rubber material is not extruded enough and the core gap is not filled; the conductive core or the cable core jumper; the short distance between the molds may cause the surface of the silicone rubber cable to appear hemp pattern.