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Yaygın plastik malzeme zorluklarına pratik yanıtlar

11636 soru
Q
Large barrel temperature fluctuation in heat-resistant polyethylene heat-resistant polyethylene processing
Q
Heat-resistant polyethylene heat-resistant polyethylene process linkage problem when switching production between different processing methods
A
Production changeover linkage needs advance planning and full preparation; the key is to clarify the differentiated requirements of different processing methods for materials.
Extrusion & Post production changeoverprocessing methodprocess parametersmaterial gradetrial production verification
Q
Excessive shrinkage of heat-resistant polyethylene extruded products
A
Excessive shrinkage is caused by high crystallinity or high temperature, and needs to be solved by controlling temperature and cooling rate.
Extrusion & Post shrinkage ratecrystallinitymelt temperaturecooling ratehaul-off speed
Q
Die head pressure fluctuation of heat-resistant polyethylene extruder
Q
Rough inner and outer walls of heat-resistant polyethylene pipes
A
Pipe wall roughness is caused by low mold temperature or poor surface condition, and needs to be solved from temperature control and mold maintenance.
Material Drying pipe wall roughnessdie temperaturemandrel temperaturemold polishingsizing sleeve
Q
Haul-off speed mismatch of heat-resistant polyethylene extruded products
A
Haul-off speed mismatch needs to be solved by precisely adjusting haul-off parameters and ensuring haul-off stability.
Extrusion & Post haul-off speedspeed matchinghaul-off slippageclamping forcehaul-off control
Q
Wide temperature window of heat-resistant polyethylene PE raw material causes difficulty in process parameter optimization
A
PE temperature window optimization needs to be advanced from two aspects: systematic experiments and experience accumulation.
Processing Machinery temperature optimizationPE gradeDOEprocess parameterstemperature database
Q
Heat-resistant polyethylene pipe longitudinal reversion rate exceeding standard
A
Excessive reversion rate is caused by large internal stress or excessive orientation, and needs to be solved from temperature control, cooling rate and haul-off speed.
Extrusion & Post longitudinal reversion rateinternal stresscooling ratehaul-off speedmolecular orientation
Q
Frequent screen change/short screen pack life of heat-resistant polyethylene extruder
A
Q
Unstable output/surging in heat-resistant polyethylene extrusion process
A
Unstable output is caused by unstable solids conveying, and the barrel temperature and feeding system need to be optimized.
Extrusion & Post unstable outputsurgingsolids conveyinghopper bridgingscrew rotation speed
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