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11636 soru
Q
Dimensional fluctuation of low density polyethylene extruded products
A
Dimensional fluctuation is caused by unstable extrusion or haul-off; all process parameters need to be systematically stabilized.
Extrusion & Post dimensional fluctuationscrew rotation speedhaul-off speedtemperature stabilityuniform feeding
10 görüntüleme
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Q
Low density polyethylene extruder screw design mismatch
A
Screw design needs to match material characteristics and product requirements; custom dedicated screws when necessary.
Processing Machinery screw designcompression ratioL/D ratiomixing elementsscrew matching
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Q
Dull surface of low density polyethylene extruded products
A
Dull surface is caused by low die temperature or too fast cooling; die temperature needs to be increased and cooling slowed.
Material Analysis no glossdie temperaturecooling ratedie polishingmelt temperature
16 görüntüleme
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Q
Improper production environment control during low density polyethylene low density polyethylene processing
A
Production environment is an important factor affecting processing quality; a complete environment control system needs to be established.
Material Drying environment controlworkshop temperaturehumiditycooling water temperatureprocess stability
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Q
Performance degradation caused by excessive regrind ratio in low density polyethylene
A
Regrind performance degradation is the result of accumulated heat history; regrind ratio and number of uses need to be strictly controlled.
Material Analysis regrindmolecular weight reductionantioxidantregrind ratioheat history
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Q
Rough inner wall of low density polyethylene extruded products
A
Rough inner wall is caused by low mandrel temperature or poor surface condition; it needs to be solved from temperature control and mold maintenance.
Processing Machinery rough inner wallmandrel temperaturemandrel polishingmelt temperatureplasticizing quality
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Q
Degradation discoloration of low density polyethylene extruded products
A
Degradation discoloration is caused by overheating or excessive shear; it needs to be prevented from three aspects: temperature control, rotation speed, and material selection.
Processing Machinery degradation discolorationthermal degradationscrew rotation speedresidence timeantioxidant
9 görüntüleme
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Q
Impurities mixed into low density polyethylene raw material causing product defects
A
Impurity contamination is solved by strengthening raw material management and equipment cleaning; complete anti-impurity measures need to be established.
Processing Machinery impuritiesmagnetic gratefiltrationequipment cleaningraw material management
9 görüntüleme
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Q
Cyclic pressure fatigue failure of low density polyethylene PPR pipes
Q
Defects caused by insufficient drying before processing of low density polyethylene low density polyethylene
A
Insufficient drying is a common source of processing defects; a complete drying system and moisture content inspection system needs to be established.
Material Drying raw '2079851475616104451moisture contentsilver streakbubblesdehumidifying drying
9 görüntüleme
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Kategoriler

Tüm Konular 11636 Material Drying 1439 Injection Molding 1506 Molding Process 740 Molds & Tooling 1506 Processing Machinery 2025 Extrusion & Post 2239 Blow Molding 315 Thermoforming 141 Material Analysis 1343 Production & Quality 382
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