Green Sand Metalcasting Foundry News

Excerpt from On All Cylinders July 15, 2016, automotive blog post by Stephen Kim. 

Running 6.80s at nearly 210 miles-per-hour, today's 275mm drag radial door-slammers incinerate the quarter-mile thanks to obscene levels of airflow and grip. Producing close to six horsepower per cubic-inch requires immense cylinder pressure that can split blocks, blow head gaskets and melt pistons in a jiffy. Fortunately, the aftermarket has methodically eliminated each of these weak links in recent years. While enhanced short-block durability is obviously a good thing, it places an even greater burden on the cylinder heads to keep all that pressure sealed inside the block. To meet the demands of today's boost-hungry race engines, casting technology has evolved tremendously to spawn a new crop of incredibly durable cylinder heads.

While Edelbrock is best known for its extensive line of cylinder heads and intake manifolds, over the last 25 years, the company has quietly established one of the most sophisticated foundry facilities in the country. Initially, the foundry's primary focus was elevating the quality of its street castings, but as racers continued pushing the limits of durability, Edelbrock developed many key technological advancements in an effort to create the strongest race castings in the business. In fact, when engineers realized that they had reached the limits of their first foundry, Edelbrock built a second foundry in 2007 better suited to the low-volume manufacturing requirements of its race cylinder heads.

The combination of old school know-how and modern technology allows Edelbrock to dynamically adapt its casting process as circumstances dictate.

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Excerpt from an article from TheMetalCasting.com 

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Excerpt from TheMetalCasting.com article.

Pattern, mold and core design involves orientation and parting. The parting line is influenced by designs of patterns and cores, number of voids in the mold, location of feeders, orientation of the part and locations of channels of gating, cooling and venting.

Orientation and parting line
A parting line is usually defined as the part of the mold that divides the segments to create cavities with the mold section and remove the final product from its mold as in die casting.

Factors which determine the number of parting lines required are:

• Geometry of the component to be molded
• Number of cavities required within the mold sections
• The nature of the runner system
• The kind of gating required and
• The method of ejecting the final product from its mold

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Article excerpt from the TheMetalCasting.com.

Foundry sand is used for making castings, and is primarily generated by the automotive industry and its part suppliers. It consists of clean silica sand, which is of high quality; or lake sand, which is bonded to make molds for ferrous (iron and steel) and non-ferrous (copper, aluminum, brass) metal castings. The following types of sands are used for making molds in the foundry industry: Green Sand, Resin Coated Sand, Molasses, Cold Box Sand, Hot Box Sand, and CO2 Sand.

These types of sand can be obtained directly from the foundries located in the Midwest states such as Illinois, Wisconsin, Michigan, Ohio, and Pennsylvania.
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