Material Drying
8 visualizaciones
HDPE injection molded product strength decline
Fenómeno del problema
HDPE parts fail mechanical testing, with no appearance abnormality.
Análisis de la causa
Too much regrind, thermal degradation, weld lines passing through stressed areas; or moisture-containing regrind causing internal micropores.
Solución
①Control the regrind ratio; ②stabilize heat history; ③keep weld lines away from stressed areas; ④dry the regrind.
Conclusión clave
Strength decline with normal appearance = a material history problem.
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!