Grey Iron Counter Weight in China
Counter weight is used to increase their
own weight to maintain balance weights. It is also called as
pullback weight, counter balance weight or just counterweight. Most
of counter weights were made by
cast iron, especially be grey iron. In China, most of
iron foundries could produce
grey iron counter weights.
Types of Counter Weights
According to the applications, there are many different counter
weights. The type of counter weight includes excavator
counterweight, forklift counterweight, loader counterweight,
agriculture counterweight, ship counterweight, train counterweight,
and elevator counterweight.
Materials of Counter Weights
The material of counter weight iron includes grey iron, ductile iron
and cast steel. For instance, as for excavator counter weights, they
are usually made by grey iron
grades HT150 and HT200 in China. As for the similar grades
by other standards, they should be FC150, FC200, GG15, GG20, NO20,
NO30, 150, 200.
Design of Counter Weights
The appearance of counter weight iron should be as simple as
possible. In order to make good weight castings, the foundries
should try to make casting parting surface as the plane, and the
number should be the lowest.
The Counter weight castings should strive not to use inner cavity or
with less sand cores, when using sand cores, the foundries should
pay attention to make their casting process to be convenient to
support the sand cores, and for air exhausting.
In China, as for the large counter
weight castings, you should use the
resin sand casting process
to keep the good surface quality and better dimensions. As for the
small counter weight castings, the normal
green sand casting process
should be enough.
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