Extrusion & Post 9 visualizaciones

PP Pipe Extrusion Inner Wall Ripples

Fenómeno del problema

Ripple-like undulations appear on the inner wall of PP-R pipes.

Análisis de la causa

Uneven melt distribution between die and mandrel or pressure fluctuation; improper sizing sleeve cooling also causes inner wall defects.

Solución

①Check die head flow channels and spider; ②stabilize extrusion pressure; ③optimize sizing cooling; ④low-shear die head design to prevent degradation.

Conclusión clave

For inner wall ripples, check die head distribution and pressure stability.

PP-R;pipe;inner wall ripple;die head;sizing

¿Le ha resultado útil?

0 personas encontraron esto útil