T/GDWCA 0014-2018 Extrusion process operating specifications

Scope

Scope: This standard specifies the preparation work, precautions, operating procedures, and records for the extrusion process. This standard applies to the extrusion process of cables that use thermoplastic and thermoset materials as insulation materials, which are extruded onto the surface of conductors (or stranded wires) and then undergo cooling and winding processes. This standard does not apply to cable products that require vulcanization, such as those made of silicone rubber. Main technical content: Precautions: 1. There should be no tangled wires on the axles of the winding wheel and the drawing wheel. 2. The preheater should be located close to the machine head to avoid the preheating effect being ineffective due to long distances. 3. The first section of the cooling water tank uses warm water cooling (except for FM-PE). 4. When winding the stranded wires: The distance between the preheater and the machine head should be (20–50) cm, otherwise the preheating effect will not be effective. 5. When winding the eyelet mold: It should be carried out after the temperature of the machine head has risen to a certain level. 6. When checking the extruded material: After installing the mold, the steel needle must not be passed through when there is no material in the machine head.

Development Information

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