Processing Machinery
4 조회수
ASA screw speed too high overheating
문제 현상
When ASA is produced at high screw speed, the measured melt temperature exceeds the standard, the product shows signs of degradation, the displayed temperature is normal but the melt temperature is out of control.
원인 분석
Although ASA can withstand medium-high screw speeds and high shear (Plastribution), shear heat generated by excessive speed makes the actual melt temperature exceed the set value; the displayed temperature cannot reflect shear heat generation.
해결 방법
①Debug the upper limit within the medium-high screw speed range; ②use measured melt temperature as the basis for speed setting; ③coordinate with low back pressure to reduce shear heat superposition; ④immediately reduce speed for verification when melt temperature exceeds the standard.
핵심 요약
ASA's shear tolerance must be verified with measured melt temperature; melt temperature out of control with normal display is a hidden risk; the combination of low back pressure and high speed is safer.
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!