Molds & Tooling
4 조회수
POM mold parting line material leakage
문제 현상
Flash appears at the parting line and worsens shot by shot; measurement confirms a gap exists at the parting line.
원인 분석
Parting line wear or platen deformation makes the fit loose; when clamping force is insufficient relative to the projected area, high-pressure melt also pries open the parting line and leaks material.; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
해결 방법
①Grind and repair the parting line fit; ②check clamping force and projected area; ③reduce the injection pressure peak; ④check platen parallelism.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
핵심 요약
Parting line material leakage needs to distinguish between wear and insufficient clamping; the former requires mold repair and the latter machine adjustment, and misjudgment causes flash to recur.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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