Extrusion & Post 10 조회수

Dense EMA surface pits

문제 현상

0.1-0.3mm dense pits on EMA product surface affect appearance and coating adhesion

원인 분석

Raw material contains impurity particles >0.05%; mold cavity surface damage or corrosion pits

해결 방법

1) Replace with pure raw material with impurities <0.01%; 2) Repair and polish mold cavity to Ra<0.2μm; 3) Filter raw material to remove particles

핵심 요약

Pits are caused by raw material impurities and mold damage; pure raw material and mold maintenance are key

EMA surface pits impurity particles mold repair raw material purity

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