Molding Process
7 조회수
Material sticking to the sizing sleeve of EAA extruded pipe
문제 현상
EAA extruded pipe adheres in the sizing sleeve, and longitudinal adhesion marks appear on the inner wall
원인 분석
EAA is soft and easily adheres to metal surfaces; the inner wall of the sizing sleeve is rough Ra>0.4μm; insufficient cooling of the sizing sleeve, high surface temperature promotes adhesion
해결 방법
1) Polish the inner wall of the sizing sleeve to Ra<0.2μm; 2) Fully water-cool the sizing sleeve, surface <30°C; 3) Pass lubricating water containing 0.1% silicone oil emulsion through the sizing sleeve; 4) Coat the pipe surface with a thin layer to reduce adhesion
핵심 요약
Sizing sleeve sticking is caused by the adhesion characteristics of the elastomer; polishing and lubricating water are the key
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