Processing Machinery
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Wide temperature window of heat-resistant polyethylene PE raw material causes difficulty in process parameter optimization
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.
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
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
Conclusión clave
PE temperature window optimization needs to be advanced from two aspects: systematic experiments and experience accumulation.
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