Pressure Gauge
Modified on Saturday, 31 January 2015 01:50 PM by mpieler — Categorized as: Consultants Corner
Pressure gauge
Vol. 17 #3, December 1990
A working head pressure gauge on an extruder is absolutely essential to understand many of the processing problems you might encounter. First, it tells you a relative pressure that you can use on a day-to-day basis to evaluate die or filter problems as well as resin changes. Secondly, it is your most easily analyzed indication of output stability for the screw/barrel portion of the system. By studying and measuring the cycle of output pressure variations, you can often troubleshoot the screw or factors upstream and downstream of the extruder that affect product quality.
See also:
Calculating extruder performance
Causes of extruder surging
Extrusion evaluation through pressure and melt temperature analysis
Extrusion screw wear
Further comments on barrel profiles
Pressure transducer calibration
Retrofitting a screw into an existing extruder
Screw and barrel wear
Screw cooling in extrusion
Surging
The effect of pressure on output
Two stage extrusion
Thrust bearings
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