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extrusion screws extrusion screws
extrusion screws

Extrusion Screws profile scaling


Screw profile of screw #1 is known. This tool can calculate profile of screw #2. This is a practical method as decision-making tool.

Screw #1

D1 = barrel diameter
Da1 = input core diameter
Dp1 = output core diameter

Screw #2

D2 = barrel diameter
GO!
Da2 = input core diameter
Dp2 = output core diameter
C/R = compression ratio (#1 & #2)
extrusion screws

Legend


L
total length
Lt
lead length L/D
Lq
drive shaft length
La
feeding zone length
Lc
transition zone length
Lp
metering zone length
P
flight pitch
F
flight width
Ha
feeding depth
Hp
metering depth