Best-In-Class Hub Casting
Pier Foundry & Pattern Shop Inc. St. Paul, Minnesota
Material: Ductile iron. Process: Green sand. Weight: 90 lbs. Dimensions: 16 in. diameter, 5.5 in. height. Application: Mining.
• The part replaced a 34-piece weldment to improve ease of manufacturing while holding up to the rigors of continuous mine operation where the hub rotates at 3,600 rpms. The cast design saved the customer $76,000 in the first year, reducing costs on the component by more than 50%.
• The project brought 18,000 lbs. of cast iron production to the industry, and the customer has identified two more hubs to convert into castings.
Knife Holder
Signicast Investment Castings Hartford, Wisconsin
Material: 4140 steel. Process: Investment casting. Weight: 1.9 lbs. Dimensions: 3.65 x 2.94 x 2.15 in. Application: Knife blade holder for a thresher.
• By converting to investment casting from fabrication, the customer realized a 25% cost reduction and was able to eliminate post-fabrication machining activities.
• The cast part exhibited improved dimensional stability, eliminating the need for a secondary straight- ening process, saving the customer additional time and cost.
May 2014 MODERN CASTING | 27
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