Study of Three dimensional transient heat transfer in rubber parts with variable physical properties.

In this article the transient heat transfer in
rubber Parts has been studied. This study is
usefull for estimation of the minimum curing time
of the rubber parts and thereby to ensure the
quality of the rubber. Also is the temperature
distribution during the rubber curing is well know,
then the curing time could accurately be
estimated, which will lead to a better curing
process. In this regard, the equation of transient
heat transfer along with the proper boundary
conditions in the form of three dimensional, has
been solved numerically by finite difference
methods.
The physical properties of the rubber has
been considered to vary linearly with temperature.
It has been shown that for the large rubber
pieces the curing process should be modelled
always in three dimentions. However for
special cases such as rubber rings due to
negligible thickness and its symmetry the two
dimentional model for heat transfer would be
acceptable.
Also it is shown that the variation of
physical properties of the rubber with
temperature has predominent effect upon the
curing time of the rubber.