PHOTO GALLERY Creating Visual Aids
Canada’s Christie Digital Solutions uses dozens of castings in its high-defi nition projectors found in movie theaters, boardrooms and classrooms around
the world (p. 36). To see images of what goes into making these devices, visit
www.metalcastingdesign.com to see a full photo gallery.
ONLINE ARTICLE
Purchasing Patterns Anyone who sources cast
components will at some point be faced with purchasing pattern equipment to produce the parts. Pattern equipment is expensive, produced in many different materials, and made up of several different components, all of which can be confusing. Casting tooling often is more
misunderstood by sourcing specialists than castings themselves. After all, a cast component is the end product you see when your order is completed. But with some basic information about patterns, you can understand how the equipment works and know how to purchase casting tooling. Patterns are forms made of wood,
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plastic, metal or another material used to form sand molds to produce metal castings. Coreboxes are used to produce sand forms that are placed into a mold to produce an internal form or feature that cannot be produced by the pattern. Coreboxes also can be made of several different materials to meet the demand of the cast component. Pattern equipment is no longer
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LESS MUCH BETTER NO MORE THAN USUAL ABOUT THE SAME SOMEWHAT BETTER
produced by hand on a bench using the traditional hand tools found in a cabinetmaker’s shop. It usually is designed using the casting end-user’s computer-generated solid model and constructed on large CNC machining centers. This giant step forward in the industry has led the way in reducing overall lead times and helped to eliminate human error in construction. Remember, quality metal castings
start with quality pattern equipment. Read more online at
www.metalcastingdesign.com. —Bob Mueller Jr., Joy Global Sur- face Mining, Milwaukee. Mueller is senior supplier quality engineer, cast product and casting supplier develop- ment for Joy Global Surface Mining.
Jan/Feb 2015 | METAL CASTING DESIGN & PURCHASING | 1
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