Seac-Backdrop-Rafters.gif (10781 bytes)

Casting

Wear Resistant Cast Products
We offer a full complement of Cobalt, Nickel, and Iron base alloy castings for resistance to abrasion, adhesion, galling, impact corrosion, and/or high temperature. Depending on your requirements, we can utilize one of our five casting capabilities to meet your exacting specifications.
-
Investment Casting
This process uses wax patterns that have been molded in a split metal die and assemble in a tree form to a runner. The complete assembly is then coated with a ceramic slurry, allowed to dry, then heated to melt out the wax. This forms a ceramic mold into which the molten wear resistant alloy is poured. Virtually any shape that can be produced in wax, can be accurately reproduced in metal with a very smooth surface.
Resin Shell Casting
Steel patterns and runners are mounted on a flat, steel plate which is heated to a temperature which cures the sand/resin mixture. The shell is then stripped off and clamped against a flat or similarly molded shell to form a mold. The mold is then filled with molten metal to reproduce the pattern. For hollow components, separately molded cores are place between the two halves of the mold before closing.
Centrifugal Casting
The centrifugal casting process is used for producing a range of cylindrical components up to a maximum outside diameter of 26 inches (660mm) and a weight of up to 700 pounds (325 Kgs). The molten metal is poured into a spinning die made of either steel or graphite. The result is a cylindrical component of exceptional quality, normally free of all casting defects and with a uniform grain structure.
Sand & CO2 Casting
Traditional sand molding is used for castings ranging from simple components, to which economical and simple wooden patterns can be utilized, to complex shapes with difficult cores that could not be easily produced by other processes. Sand casting is also useful in situations where special features are required, such as dissimilar metal inserts with a casting. CO2 casting is a type of sand casting where sodium silicate is used as a binder which hardens under the influence of gaseous carbon dioxide. This produces a stronger and more rigid mold which is very helpful when producing large castings.
Spin Bonding
This process is similar to centrifugal casting but with the die replaced by an alloy steel tube. Molten metal is then poured into the spinning tube and forms a relatively thin lining. This produces a complete metallurgical bond between the wear resistant alloy and the tubing. The main advantage to this process is the reduction in material cost.