Common faults and troubleshooting solutions for PVC pipe production line
PVC pipe production line is a complete set of equipment that processes PVC raw materials into pipes through continuous extrusion molding. The core is to realize the automated process of raw material melting, molding, shaping and cutting. Its stability directly determines the dimensional accuracy and physical properties of the pipes.
PVC pipe production lines are prone to defects during operation due to improper parameters or raw material issues, requiring targeted adjustments.
|
Common issues |
material cause |
countermeasure |
|
The pipe surface is not smooth |
1. Uneven mixing of raw materials; 2. Low mold temperature; 3. Excessive extrusion speed |
1. Extend the mixing time; 2. Increase the mold temperature (+5-10℃); 3. Reduce the extrusion speed |
|
Pipe size deviation |
1. Insufficient vacuum; 2. Unstable traction speed; 3. Mold wear |
1. Increase vacuum level (0.06-0.08MPa); 2. Calibrate the traction machine speed; 3. Replace worn molds |
|
Bubbles on the inner wall of the pipe |
1. The raw material contains moisture (>0.3%); 2. The barrel temperature is too high, resulting in decomposition. |
1. Dry the raw materials at 80-100℃ for 2-3 hours; 2. Reduce the barrel temperature by 5-8℃ |
|
Pipe breakage |
1. The traction speed is too fast, resulting in excessive stretching; 2. The toughness of the raw material is insufficient |
1. Reduce the traction speed to match the extrusion speed; 2. Adjust the formula to increase the proportion of toughening agent |
