Molds & Tooling
6 조회수
SMMA Shrinkage Management
문제 현상
SMMA shrinkage 0.02-0.06% is extremely low, but mold design still needs precision.
원인 분석
SMMA shrinkage 0.02-0.06% is far lower than general plastics; but precision parts still need compensation; directional differences; process influence; measurement verification.
해결 방법
①Design the mold according to 0.02-0.06% shrinkage; ②actual measurement verification for precision parts; ③directionality consideration; ④process stability.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
핵심 요약
SMMA extremely low shrinkage is a dimensional accuracy advantage; but precision management is still necessary; actual measurement keeps accuracy.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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