Superior Machining Qualities | Less Weight | General Tolerance Information

For over sixty years, many industries all over the world have relied upon the shell mold process to deliver their cast metal products. The shell mold process in the United States dates back to 1947. At Hiler Industries, we have been producing castings with this very same process since 1957.

Over the years, the basic process has essentially remained unchanged, but technology has advanced. Hiler has embraced technological advancement to better our processes and end products, and to continue to achieve optimum quality and customer satisfaction in all that we do.

Today, Hiler boasts two modern foundries that produce millions of castings every year- all using the shell mold process. For over fifty years, we have provided our customers with the highest quality castings, cast in a variety of metals, all with an excellent surface finish and near net shape.

Superior Machining Qualities

A major benefit of shell molding is the excellent machining characteristics achieved through this process. Many photomicrograph inspections have shown that shell castings have what might be termed "cooling rate inversion." Unlike green sand castings, permanent mold and die castings --- which all have hard skins and "soft" interiors --- shell mold castings have "soft" skins and hard or dense interiors. As a result, shell mold castings have superior machining qualities.

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Less Weight

Another major benefit is that less machining stock is required. Over the years, we have found that .060 stock is more than ample. In fact, if the job were to be machined in our machine shop, we would add only .040 stock. This is helpful in two ways: The casting will weigh less, thereby costing less Less machining stock is removed, which improves machining time and lowers machining cost

There are also times when we have worked with customers and have eliminated machining entirely.

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General Tolerance Information

Note: The above information is modified by the individual casting complexity and to agreement between customer and Hiler Industries. For example, we have held some dimensions to ± .010, obtained less than 1° draft, and used some finish allowances less than .030.

If unparalleled quality and accuracy in metal castings at a competitive cost are vital to your business, Hiler Industries should be your casting supplier. For additional information on our available services and how we can benefit your organization, please contact us today.

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