base for the various casting alloys, molding and coremaking materials, and feeding systems materials like sleeves, chills and feeding pads for simulation software.
Designer: Bob Mueller Jr.
COMPANY: P&H Mining Equipment POSITION: Procurement Specialist, Raw Materials We use FEA (MSC Nastran) to
evaluate castings, such as shoes, tumblers, snubber arms, etc. We also utilize a design review process that involves the casting supplier prior to any formal release of the part. We also run a proprietary fatigue soft- ware, which uses non-load-history dependent algorithms. But we also have a more conventional program called MSC Fatigue. We do not have solidification
software in house, but we do utilize it through our casting supply base. As for non-computer-based tools, we apply engineering design principles, including the analytical evaluation of stress, and layout for form, fi t and function. We have used some dynamic analysis software, including MSC Corp.’s ADAMS and Working Model 2-D motion software. For some parts, we engage heavily
in material analysis and properties. This is determined primarily via past history and basic analysis techniques and then verifi ed with testing. A big aid in our casting design-
ing is early and consistent discussion with the metalcaster—the concurrent engineering process. We also utilize casting-knowledgeable employees to provide castability guidance.
Designer: Jimmy King
COMPANY: FMC Technologies Inc., Stephenville, Texas POSITION: Casting Commodity Strate- gist, Fluid Control We use Unigraphics NX6 for
sketching models. We also use cast- ing suppliers for general information on design.
METAL Online Resource
The designers said they used the following websites:
•
www.metalcastingdesign. com/metalcasters
•
www.metalcastingdesign.com/materials •
www.metalcastingdesign.com/processes •
www.afsinc.org
SEPTEMBER/OCTOBER 2010 METAL CASTING DESIGN AND PURCHASING 47
Solidifi cation software, while cited as expensive by some, was said to be important by a number of designers. Some rely on their casting suppliers to provide the software, others contract with the software providers on a case-by-case basis.
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