PVC pipe fittings are widely used in pipelines and are very necessary, but there are also some problems. PVC pipe fittings sometimes have surface wrinkling and inner wall roughness. Wrinkled, what is the reason for the rough inner wall? The following is a brief explanation for everyone.
Reasons for surface wrinkles and rough inner walls of PVC pipe fittings:
First, the reason for the wrinkling on the surface of the pipe may be that the temperature around the nozzle mold is uneven, and the heating ring needs to be checked; if the cooling is not good, the cooling water needs to be turned on or the cooling temperature should be lowered; the pulling force is too slow, and the pulling force needs to be accelerated; Replacement of raw materials; core mold temperature is too low, need to increase core mold temperature; body temperature is too low, need to increase body temperature; pulling force is too fast, need to slow down. The reason for the rough inner wall is that the temperature of the mold core is too low, and it is necessary to increase the temperature of the mold core or add processing aids; the temperature of the barrel is too low, and the degree of plasticization needs to be increased;
