Processing Machinery
4 조회수
Longitudinal stripes or scratches appear on the outer surface of extruded pipe
문제 현상
Longitudinal stripes or scratches appear on the outer surface of extruded pipe, affecting appearance quality
원인 분석
Damage or carbon deposits on the die inner surface
Unstable melt temperature, viscosity fluctuation
Uneven screw plasticization
Broken screen pack, impurities pass through
Raw material contains impurity particles
해결 방법
Clean and polish the die inner surface
Stabilize extrusion temperature
Ensure uniform screw plasticization
Replace the screen pack
Strengthen raw material inspection
핵심 요약
Pipe surface stripes need to be addressed from die cleaning and temperature stability
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