Basic HTML Version
In this article we shall discuss on how to plan and maintain the
extruder processing zone in perfect fit condition all the time; and how
to plan proactively for replacement of key parts so that production
does not suffer.
It is very important to set-up preventive maintenance schedule to
avoid major breakdown.
Ÿ
Screw dismantling procedures
Getting the screws of the shaft
Ex t r ude r P r o c e s s i ng Zone :
This topic covers the following
Some of the important constituents to keep the extruder in good
Ÿ
condition are mentioned below
Ÿ
reassembly of screws
Ÿ
Installing the screws back into the extruder
Ø
Extruder Processing Zone.
Ÿ
Important tips for screw assembly
Ø
Electrical equipment maintenance
Ÿ
Recommended wear limits for screws and barrels
Ø
Measuring instruments calibration procedure
Ø
Production data analysis
Ÿ
Cleaning and inspection screw elements
-10-
the expected quality of the end product. There is no
I
n simple terms a co-rotating twin-screw extruder is a
standard screw profile and wear and tear limit that is
mixing vessel. What constitutes critical components of
suitable to process all polymers.
an extruder is the motor and its control, gearbox &
extruder processing zone. Feeders and pelletizer also
Any compounder would have a long wish list for
play a vital role to ensure extruders perform to its max
obtaining best value from the investments made on
efficiency. Some extruder has option for side feeders,
the extruder, support ing peripherals and
degassing and so on.
downstream. It is important to define the wish list
and choose the right equipment to perform the job.
Twin-screw extruders have proven its design in
We at STEER help customers to achieve their wish
polymer processing industries successfully in two
list.
main areas of application, they are:
To ensure that the extruder perform efficiently,
Ÿ
Profile extrusion
Ÿ
Special i ty polymer extrusion, such as
disciplined periodic extruder maintenance is critical.
compounding, devolatilization and chemical
At STEER and like any other serious manufacturer of
reaction.
high end machines; great importance is given to the
The heart of the twin-screw extruder is the extruder
engineering designs. Equal importance is given to
processing zone. Required level of quality and
make its customers become proficient in maintaining
efficiencies largely depends on the application. The
the extruder to give optimum benefits.
screw profile varies depending upon application and
THE
of
Art
Extruder Care
and
Maintenance