Extrusion & Post
4 조회수
Low burst pressure of PET extruded pipes
문제 현상
The burst pressure of PET extruded pipes in pressure testing is lower than design requirements.
원인 분석
Pipe wall thickness is uneven or has weak points; weld lines (die head spider marks) have insufficient strength; material IV is on the low side; haul-off over-stretches.
해결 방법
Optimize the die head to reduce weld lines; control wall thickness uniformity; select high-IV raw materials (≥0.80); optimize haul-off speed.
핵심 요약
PET pipe burst strength depends on wall thickness uniformity and material intrinsic viscosity.
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