Extrusion & Post
11 조회수
PVC Wire and Cable Extrusion
문제 현상
Cable insulation layer had pores, failed the breakdown test, and showed surface eccentricity
원인 분석
Insulation pores originate from damp granules or degradation gas; poor mold centering causes eccentricity; improper temperature control of soft PVC affects insulation performance consistency; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
해결 방법
①Dry the granules and control extrusion temperature; ②adjust mold centering; ③online diameter measurement and spark detection of the insulation layer; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
핵심 요약
The quality of PVC cable is electrical safety; pores and eccentricity are two major veto items, and online detection must be configured; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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