Processing Machinery
2 views
Cooling system efficiency decline of random copolymer polypropylene pipe special material extruder (Variant: mass production scenario)
Problem Phenomenon
The product is insufficiently cooled, and the temperature is still high after leaving the cooling water tank, affecting the sizing effect and subsequent cutting.
The decline in cooling efficiency leads to reduced production speed or product deformation.
In particular, in continuous mass production, this problem is more prominent and needs key attention.
Cause Analysis
（1）The cooling water flow is insufficient or the water pressure is low
（2）The cooling water temperature is too high
（3）The cooling water channel is scaled and blocked
（4）The cooling water tank length is insufficient
（5）The product wall thickness is large and the heat dissipation is slow
（6）In continuous mass production, process parameter fluctuations or equipment status changes have aggravated this problem
Solution
（1）Check the cooling water pump and water pipes to ensure sufficient flow and water pressure
（2）Add a cooling water cooling device (chiller) and control the water temperature at 15-25°C
（3）Regularly clean the cooling water channels and cooling water tank to remove scale
（4）Increase the length of the cooling water tank or add cooling stations
（5）For thick-walled products, appropriately reduce the extrusion speed and extend the cooling time
（6）And establish standardized work instructions, with special attention to parameter stability in continuous mass production
Key Takeaway
The decline in cooling efficiency is caused by insufficient water volume or high water temperature, and the cooling system needs to be improved and the water temperature controlled.
In different production scenarios, targeted preventive measures need to be taken.
Was this helpful?
0 people found this helpful
Thank you for your feedback!