Injection Molding 5 조회수

MP '2079851475616104452 cold slug marks

문제 현상

MP injection molded products show cold slug marks near the gate

원인 분석

nozzle temperature low causing previous injection residue to cool and solidify in the nozzle; cold slug well design insufficient, cannot hold the cold slug; injection pressure insufficient

해결 방법

1) raise nozzle temperature to 150-170°C; 2) design the mold with a sufficiently large cold slug well; 3) ensure fresh melt at the nozzle front before each injection; 4) raise injection pressure to push the cold slug through the gate

핵심 요약

cold slug marks are caused by solidified residue in the nozzle; raising nozzle temperature and cold slug well design are key

MP injection cold slug mark nozzle temperature cold slug well injection pressure

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MP '2079851475616104452 cold slug marks

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