Material Analysis
4 조회수
HDPE pipe ovality (insufficient sizing)
문제 현상
The pipe is elliptical and difficult for socket connection, and the vacuum pressure test of the vacuum sizing tank is low.
원인 분석
Insufficient vacuum pressure prevents the softened pipe blank from closely attaching to the sizing sleeve; uneven spray water pattern makes one side cool and shrink faster; excessive roller spacing causes the incompletely cooled pipe to sag and deform.
해결 방법
①Confirm the vacuum pump provides stable and sufficient negative pressure; ②clean all spray nozzles to ensure uniform water curtain; ③densify roller support to prevent sagging; ④align the production line centerline.
핵심 요약
Ovality is the result of the combined action of sizing, cooling, and support; systematic investigation from the four aspects of vacuum, water curtain, rollers, and centerline gives the best effect.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!