Extrusion & Post
13 visualizações
PU screw slipping
Fenómeno do problema
During PU extrusion, the screw slips, feed does not advance, output drops sharply
Análise das causas
PU pellets melt too early in the feed section, forming a lubricating film causing screw slip; feed section temperature too high
Solução
1) Lower feed section temperature by 10-15°C to delay melting; 2) Deepen feed section flight to increase material gripping force; 3) Dry pellet surface to reduce lubrication
Conclusão principal
Screw slipping is caused by premature melting; cooling the feed section is key
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!