SELECTING MATERIALS FOR THE PRODUCTION OF THREAD GUIDES
FOR TEXTILE MACHINERY
The choice of thread guides for textile machinery was a
secondary problem in the past. Nowadays ever-faster production speeds,
synthetic fibres and wearing technical yarns have led to ever-higher demands
on thread guides.
In fact a mechanically perfect textile machine can undergo a drastic reduction
in performance due to thread guides made from unsuitable ceramics. Snow
formation on thread guides and high friction values lead to a reduction
in process economic efficiency.
It is thus important to choose the right ceramic material on the basis
number of fibres in the yarn;
The choice of materials should also depend on different
applications of the thread guide itself.
The selection of materials depends on the various applications of the
The design of metal thread guide elements enables the selection of the
base material, both on the basis of hardness and resistance, as well as
the most practical forming technology (shearing, bending, turning, fusion,
Lastly the combination of the base material and coating should be considered,
with the option of heat treatments prior to coating and the alternative
between treated metals or stainless steel.
REQUIREMENTS FOR THREAD GUIDES
Some of the most important properties a thread guide has
to meet are:
surface structure (not to damage the yarn).