Molds & Tooling
7 조회수
PA12 Shrinkage Range and Mold Compensation
문제 현상
【Problem phenomenon】PA12 products had large dimensional deviations, and shrinkage was inconsistent in areas with different wall thicknesses
원인 분석
PA12 shrinkage ranges widely from 0.5-2%, depending on the grade, wall thickness, and process conditions; the wide range makes uniform compensation fail, and dimensional design must be calculated according to actual conditions
해결 방법
Design mold compensation according to the grade data sheet and the measured shrinkage of wall thickness; modify the mold after measuring key dimensions of the first article; lock the process to reduce shrinkage fluctuation; after adjustment, take consecutive samples to verify the effect, and resume mass production only after confirming stability
핵심 요약
The wide 0.5-2% shrinkage range requires measured compensation, and empirical values are unreliable; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!