Extrusion & Feeding Ratio
Aluminium (Porthole)
Plastic (Die Head)
Billet diameter (mm)
Billet area
Profile cross-section area A (mm²)
Total feeder port area ΣA (mm²)
Calculate
Billet area
–
Extrusion ratio
–
Feeding ratio
–
Recommended EX 10 – 60
Recommended feeding ratio ≥ 40
Die swell and product compensation
Die opening width (mm)
Product width after swell (mm)
Die swell factor
–
Compression ratio
Chamber section area (mm²)
Die opening area (mm²)
Compression ratio
–
Typical swell 1.05 – 1.15
Typical compression 1.2 – 4.0