Some attention when designing
Cooling mold
Cooling core
Some attention when designing
1
Cooling system
located as close
to the mold
surface as
possible, but
should pay
attention to the
mechanical
strength of the
material on site
2
System diameter
should be greater
than 8 mm (8mm
or 10mm) for
easy processing
and avoid the
flow rate of the
cooling fluid is
different.
5
Pay attention
to the
cooling of
the thickness
part of the
product
4
Pay
attention
to the
thermal
conductivi
ty of cast
materials.
3
Split system
cooling off areas
to avoid too long
cooling channels
leading to the
large
temperature
difference
6
Note to warping phenomenon due
to the different shrinkage when
the thickness of different
products.
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Cooling system
Theoretically, cooling time is proportional to the square of the
heaviest part wall thickness or the power of 1.6 for the largest
runner diameter. That is#
Công thức tính độ khuếch tán của nhựa nóng chảy
Nói cách khác tăng gấp đôi chiều dày khuôn sẽ làm tăng thời
gian làm nguội lên 4 lần
Reynolds number
Coolant ow types and corresponding
Reynolds number ranges
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