Molding Process
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HDPE pipe sizing sleeve buildup
Fenómeno do problema
Material accumulates at the sizing sleeve inlet, and the pipe surface is scratched.
Análise das causas
Volatiles or low molecular substances in the melt condense and accumulate at the sizing sleeve inlet; high melt temperature aggravates volatilization.
Solução
①Regularly clean the sizing sleeve; ②appropriately lower the melt temperature; ③check raw material quality; ④polish the sizing sleeve inlet.
Conclusão principal
Sizing sleeve buildup = volatile condensation; lower the temperature and clean frequently.
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