First of all, temperature control is crucial. During the extrusion process of PVC cable material, the temperature of the barrel and the mold needs to be precisely controlled. The temperature of the feeding section is usually controlled at 130-140℃, the plasticizing section is 135-145℃, and the homogenizing section is 140-150℃. The temperature of the molding mold is slightly higher, generally in the range of 150-180℃, to ensure that the PVC cable material can be fully plasticized and flowed.
Secondly, the screw speed is also a key factor affecting production quality. The speed of the screw will directly affect the plasticization degree and extrusion speed of the PVC cable material. Generally speaking, the screw speed should be adjusted according to the model of the extruder and production requirements to ensure that the PVC cable material can be extruded evenly and stably.
Furthermore, the extrusion pressure should not be ignored. The size of the extrusion pressure will directly affect the density and dimensional accuracy of the PVC cable material. During the production process, the extrusion pressure needs to be reasonably controlled to ensure that the PVC cable material can fit the mold tightly, so as to produce cable materials that meet the requirements.
In addition, the mixing and plasticizing process of raw materials also need attention. During the mixing process, it is necessary to ensure that the raw materials such as PVC resin, plasticizer, stabilizer, etc. can be fully mixed and evenly to improve the overall performance of PVC cable material. During the plasticizing process, it is necessary to ensure that the PVC cable material can be fully plasticized to improve its fluidity and formability.
At the same time, the cooling rate is also an important factor affecting the quality of PVC cable material. Too fast or too slow cooling rate may cause cracks, deformation and other problems in PVC cable material. Therefore, it is necessary to reasonably control the cooling rate during the production process to ensure that the PVC cable material can be cooled and solidified evenly and quickly.
In addition, the vacuum degree and exhaust effect during the production process also need attention. The quality of vacuum degree and exhaust effect will directly affect the content of bubbles and impurities in PVC cable material. Therefore, it is necessary to ensure good vacuum degree and exhaust effect during the production process to reduce the generation of bubbles and impurities.
Finally, attention should also be paid to the hygiene and safety of the production environment. Keeping the production environment clean and tidy can reduce the generation of pollutants and improve the quality of PVC cable material. At the same time, strengthening production safety management can ensure the life safety and physical health of employees.
