Five common causes of appearance defects in rubber sheathed cables

by:AAA     2020-04-02
In the production process of rubber sheathed cables, appearance defects often occur, such as unsmooth surface; There are clinker particles on the surface (Early vulcanized rubber particles)Or impurities; Scratches and abrasions on the surface of wires and cables; There is collapse on the surface; There are Hemp patterns on the surface. The following are the five common causes of appearance defects of rubber sheathed cables collected by cable network in the network for reference by the majority of rubber sheathed cable manufacturers: first, the die socket line is too long or too short, the die opening is not smooth and the aperture is too large; The temperature of the handpiece, die mouth or fuselage is low; The small plasticity of rubber may lead to the unsmooth surface of rubber cable. Second, the supply of rubber is not clean, containing impurities; The scorching time of rubber is too short; The temperature of the extruded Oak fuselage, nose or die is too high; The rubber flow in the handpiece is not smooth, and there are rubber stranded dead corners; The screw is not smooth, viscose, etc. may cause clinker particles on the surface of the rubber cable (Early vulcanized rubber particles)Or impurities. Third, the mold sleeve is not smooth, no chamfer; There are impurities or cooked glue particles blocking the die mouth; Drag the tube scratch in the vulcanization tube; The small aperture of the rubber gasket at the outlet of the vulcanization pipe may cause scratches and scratches on the surface of the rubber sleeve cable. Fourth, the aperture of the mold sleeve is too large; The gap between the outer layer of the conductive wire core and the single wire is too large, and the outer diameter of the cable core is uneven; Rubber has small plasticity and poor viscosity; There are impurities in the rubber; The small distance to the die and the small pressure may cause the surface of the rubber sleeve cable to collapse. Fifth, the aperture of the mold sleeve is too small; The rubber is not extruded enough, and the gap of the wire core is not filled up; Conductive wire core or cable core jumper; The short distance to the die may lead to hemp patterns on the surface of rubber sheathed cables.
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