affect the cost of your castings?
There are many factors that can affect the cost of your castings
and they can vary from supplier to supplier. These factors can
change from supplier to supplier because each supplier has
different capabilities, manufacturing processes, material costs,
etc. In this article we will examine the major factors that will
affect costs in order to better help you estimate casting costs.
Metal choice is one of the most influential factors in
determining cost. Metal costs vary greatly from metal to metal;
for example iron typically accounts for 10-25% of total cost
while aluminum can be anywhere from 40-60%.
Melting affects overall cost due to the cost of the energy used
to melt the metal to pour your castings.
Molding affects overall costs differently depending on the
method used. For example, with permanent molds, molding costs
will be minimal, but you also have to pay for the mold. Where as
sand molds require a Tooling cost and can account for 5-10% of
This cost depends on if the pouring is automated or performed
manually. When combined, Pouring and Melting can account for
15-20% of casting costs.
Coremaking can have a large affect on overall costs if your
casting requires multiple cores and the size /complexity of
those cores. It can make up 10-20% of overall casting cost.
Cost depends on whether the casting is made from a ferrous or
non-ferrous metal. Non-ferrous metals are more conducive to
trimming and finishing, reducing costs compared to ferrous
Costs depend on the type of Inspection. Destructive testing
requires a casting to be destroyed and inspected internally,
further affecting costs. X-ray testing may require the casting
to be sent to a testing center, affecting costs.
Heat treating may not be necessary for all castings but for
those that need it, it's similar to melting as the energy needed
to heat treat the casting increases costs.
Shipping depends on the overall weight of the castings being
shipped and the distance that they are being shipped.
Machining is not always provided by the casting supplier. In our
foundry, we offer CNC machining for our castings. Machining can
greatly affect costs and depends on many variables. Variables
can include machine fixtures, hours spent per casting, metal
being machined, number of castings, etc.
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