Molds & Tooling
3 조회수
PCABS Weld Line Strength
문제 현상
[Problem Phenomenon] PC/ABS multi-gate products have obvious weld lines and crack along the lines under stress
원인 분석
The temperature of the confluence front drops and molecular entanglement is insufficient; the high viscosity of the PC phase makes fusion more difficult; weld line strength can be 20-40% lower than the body; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
해결 방법
Increase melt temperature and mold temperature to promote fusion; move weld lines out of the stressed area; set overflow wells to improve confluence quality; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
핵심 요약
PC/ABS weld line strength is discounted to 60%, with temperature and relocation as dual countermeasures; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future
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