Extrusion & Post
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Glass Fibre extruded pipe ellipticity exceeds standard
Fenómeno del problema
Glass Fibre extruded pipe ellipticity >1.05, exceeding 1.02 standard requirement
Análisis de la causa
Pipe cooled unevenly, single-side cooling; sizing sleeve design unreasonable; haul-off clamping force uneven causing pipe compression deformation
Solución
1) Adopt annular spray cooling to ensure uniform cooling; 2) optimize sizing sleeve inner diameter and taper design; 3) multi-caterpillar uniform clamping haul-off; 4) increase vacuum sizing section length to ensure full sizing
Conclusión clave
Ellipticity is caused by uneven cooling and clamping; annular cooling and uniform haul-off are key
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