Processing Machinery
5 조회수
Polyolefin plastomer pipe pressure resistance test unqualified (Variant: Enhanced Measures)
문제 현상
The pipe ruptures or leaks in the hydraulic test, and the pressure resistance performance is not up to standard.
Unqualified pressure resistance directly threatens the safety of pipe use and is a fatal defect in water supply and gas pipelines.
In particular, additional attention is needed on the original basis; this problem is more prominent and requires focused attention.
원인 분석
（1）The pipe wall thickness is insufficient or uneven
（2）Material degradation causes the molecular weight to decrease
（3）There are bubbles or impurities in the pipe
（4）The crystallinity is inappropriate and the mechanical properties are poor
（5）The melt plasticization is insufficient and the welding is poor
（6）On the original basis, additional attention is needed: fluctuations in process parameters or changes in equipment status have aggravated this problem
해결 방법
（1）Check and adjust the pipe wall thickness to ensure the wall thickness of each part is uniform and up to standard
（2）Control the extrusion temperature within the range of 180-230°C to avoid material degradation
（3）Fully dry the raw material to ensure the raw material is clean
（4）Optimize the cooling conditions to ensure the crystallinity of the polyolefin plastomer is appropriate
（5）Optimize the screw design to ensure sufficient plasticization
（6）And strengthen process monitoring; on the original basis, additional attention is needed to pay special attention to parameter stability
핵심 요약
Unqualified pressure resistance is caused by insufficient wall thickness, material degradation, or internal defects, and needs to be solved systematically from process and material quality.
Targeted preventive measures need to be taken in different production scenarios.
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!