ROBAR Capabilities Foundry PATTERNS

Patterns • Molds • Melting • Core • Sand • Heat Treat • Coating • Light Forging • Rubber Gaskets

Pattern Maintenance and Control with organized storage and recording system.

Methods Engineer - long-established relationship with
independent local pattern-making and die shops.



At the beginning of each project, the ROBAR Rep and Methods Engineer discuss the requirements with the customer and decide the best way to make the casting.

Once decisions have been made, a Pattern Maker (either an independent contractor or a ROBAR tradesman) builds the equipment according to ROBAR's specifications.

When the new pattern equipment is received it goes into the foundry for initial trials and final production. Patterns typically cost from $500 to $15,000.

The casting process begins with patterns. ROBAR has approximately 2000 patterns in on-site storage. Some patterns are owned by our customers while others are owned by ROBAR.

Patterns are used to create an impression in the molding sand. The impression will later be filled with molten metal. The pattern is slightly larger than the outside areas of the metal casting to be produced. This allows for the metal to shrink as it solidifies.

Some patterns produce single castings, while others can create multiple castings from each molding cycle. Patterns are commonly made from wood, aluminum, or plastic.

Cores are used to create more complicated shapes, special details, holes, or hollows in castings. Cores are placed in the sand mold after the pattern impression is made and are produced from bonded sand in special molds called Core Boxes.

The pattern accommodates the cores by having places for the cores built into the pattern. When the pattern is removed from the sand, it leaves indentations called core prints. When the cores are set into these places they are correctly positioned and supported.

ROBAR equipment is designed to produce castings with
the maximum efficiency, highest quality, and lowest unit cost.

Patterns • Molds • Melting • Core • Sand • Heat Treat • Coating • Light Forging • Rubber Gaskets

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Robar Industries Ltd.CALL for Information: 604.591.8811 - Toll Free 800.663.6553

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