Cast Iron Blocks
Cast iron blocks are one type of
iron castings with block shapes
such as cubic, rectangle, spherical shapes. Most of cast iron blocks
are used as the balance weights or called
Most of cast iron blocks do not have requirements to materials, e.g.
cast iron grades, because
of their application. However, for the cast iron blocks used for
machineries such as tractors, forklifts, trucks and elevators, some
buyers will require the material to be grey cast iron ASTM NO.30,
FC200, GG20 to insure the certain strength for the casting parts.
During my works in Dandong Foundry
in China, I seldom to hear about the cast iron blocks made by
As for the dimensions of cast iron blocks, usually the flatness and
parallelism are important for the fitness with other parts, but
normally the flat rough surface after grinding should be acceptable,
and machining is not necessary except of special requirements.
The most important issue for cast iron blocks is the price. The
price must be very low because their low requirements and good unit
weight, most of iron foundries in China could produce these types of
castings. So, as for the small cast iron blocks, you should try to
produce them by green sand floor
molding process, but for the large blocks, the
resin sand casting
process will be necessary. Although the resin sand casting prices
have been increased largely because of the increased resin prices,
this process can guarantee the good surface quality, flatness and
parallelism for the large cast iron blocks.
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