Processing Machinery
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Decreased cooling system efficiency of heat-resistant polyethylene extruder (Variant: mass production scenario)
Fenómeno del problema
The product is insufficiently cooled, and the temperature is still high after leaving the cooling water tank, affecting the sizing effect and subsequent cutting.
Decreased cooling efficiency leads to reduced production speed or product deformation.
Especially in continuous mass production, this problem is more prominent and requires key attention.
Análisis de la causa
(1) Cooling water flow insufficient or water pressure low
(2) Cooling water temperature too high
(3) Cooling water circuit scaled and clogged
(4) Cooling water tank length insufficient
(5) Product wall thickness large, heat dissipation slow
(6) In continuous mass production, process parameter fluctuations or equipment state changes aggravate this problem
Solución
(1) Check the cooling water pump and pipes to ensure sufficient flow and water pressure
(2) Add a cooling water temperature reduction device (chiller), control water temperature at 15-25°C
(3) Regularly clean the cooling water circuit and cooling water tank to remove scale
(4) Increase cooling water tank length or add cooling stations
(5) Appropriately reduce extrusion speed for thick-walled products to extend cooling time
(6) And establish standardized work instructions, paying special attention to parameter stability in continuous mass production
Conclusión clave
Decreased cooling efficiency is caused by insufficient water volume or too high water temperature, and the cooling system needs to be improved and water temperature controlled.
Targeted preventive measures need to be taken in different production scenarios.
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