Molds & Tooling
3 조회수
White Stress Marks on PEEK Surface
문제 현상
White stress marks appear at ejection or assembly-stressed locations of PEEK products, common at deep-cavity corners and ejector pin positions, affecting appearance and strength evaluation.
원인 분석
Local stress exceeding material yielding causes microscopic crazing, and light scattering appears white; concentrated ejection force, unsmooth demolding, and assembly interference are typical inducements; when crystallization is insufficient, the material is more prone to stress whitening.
해결 방법
①Optimize the ejection layout to distribute the ejection force; ②Check draft angle and polishing to eliminate sticking; ③Ensure sufficient mold temperature for complete crystallization to improve toughness; ④Design the assembly structure to avoid interference stress.
핵심 요약
PEEK stress whitening is a direct signal of local overload; check both the de'2079851475616104453 and the crystallization state; white-marked areas should be evaluated as key strength weak points.
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!