Abstract: The cold box plus process is
discussed in principle. When the proper heating to the core box
is given (65℃±2℃), the binder lever can be saved, also the core
strength and surface hardness are improved, the
moisture-sensitivity is reduced. The mechanism of the cold box
plus process is that the proper heat increases the activity of
resin function groups and promotes the crosslinking reaction.
The result of a scanning electron microscope analysis shows that
the core surface strength is improved by heat.
Key words:
Cold box Core making Process
Manuscript received on June
20, 1995
|