Best-In-Class


“Razr” Disc Opener Monarch Industries Ltd.


Winnipeg, Manitoba, Canada


Material: Ductile iron 65-42-12. Process: Green sand. Weight: 95.35 lbs. Dimensions: 34 x 25 x 10 in. Application: Assembly opens


the ground for seed to be inserted.


• T e metalcaster replaced six weldments of 35 steel pieces with six machined ductile iron cast- ings, each of which provides link- ages and pivot points for mating parts. Diffi cult welding procedures were eliminated as well as external, frame-mounted weight kits. Cast-in features simplifi ed assembly and handling.


• T e casting design increased the part’s torsional rigidity signifi cantly through both material placement and widen- ing the cross sections. Converting this part to ductile iron castings also reduced the customer’s fabrication time for welded components.


Radar Casting Carley Foundry Inc. Blaine, Minnesota


Material: F357-T6 aluminum. Process: Nobake. Weight: 750 lbs. Dimensions: 61 x 66 x 52 in. Application: Classifi ed.


• Using computer-based simulation, the company con- verted the part from machined plates that were welded together, or a truss construction, to a nobake casting in two parts. T e two separate castings are welded together in the fi nal product.


• T e design resulted in a 67% reduction in part cost. It also enabled the end user to realize a substantial tooling cost savings. Of all the methods studied as possible ways to produce the part, the nobake casting process off ered the fastest return on investment.


24 | METAL CASTING DESIGN & PURCHASING | May/Jun 2013


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