Processing Machinery
3 조회수
PEI Barrel and Screw Design
문제 현상
In PEI processing, poor plasticizing and wear problems coexist; general-purpose screw configurations barely cope, and long-term stability is poor.
원인 분석
PEI recommends a bimetallic barrel; screw L/D ratio 20:1, compression ratio 2.2:1, feed zone 5 flights, compression zone 1 flight, metering zone 4 flights; avoid abrupt changes to reduce shear; general-purpose screws of 16~24:1 and 1.5~3.0:1 can also be used.
해결 방법
①Prioritize the dedicated configuration: L/D 20:1, compression ratio 2.2:1; ②bimetallic barrel material; ③general-purpose screws of 16~24:1 can also be used successfully; ④vented barrels are not recommended.
핵심 요약
PEI screws have detailed official design specifications; bimetallic barrels are the standard wear-resistant configuration; vented barrels are a clear taboo.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!