Processing Machinery
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Wide temperature window of heat-resistant polyethylene PE raw material causes difficulty in process parameter optimization (Variant: strengthened measures)
Fenómeno del problema
PE-type materials have a wide processing temperature range (190-230°C), and there is no basis for how to select the optimal temperature in actual operation.
Improper temperature selection damages energy consumption, product quality and production efficiency.
Especially on the original basis, additional attention is needed, and this problem is more prominent and requires key attention.
Análisis de la causa
(1) Different PE grades have different optimal processing temperatures
(2) Temperature setting lacks systematic method
(3) Operators set temperature by experience
(4) Temperature not optimized according to product characteristics and quality requirements
(5) The matching relationship between temperature and screw rotation speed is unclear
(6) On the original basis, additional attention is needed: process parameter fluctuations or equipment state changes aggravate this problem
Solución
(1) Establish a processing temperature database for each PE grade
(2) Optimize the temperature of each section through design of experiments (DOE)
(3) Appropriately increase temperature to improve fluidity when the product is thin-walled
(4) Appropriately reduce temperature to reduce shrinkage when the product is thick-walled
(5) Standardize temperature adjustment records, establish optimal process parameter files
(6) And strengthen process monitoring; on the original basis, additional attention is needed, paying special attention to parameter stability
Conclusión clave
PE temperature window optimization needs to be advanced from two aspects: systematic experiments and experience accumulation.
Targeted preventive measures need to be taken in different production scenarios.
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