Abstract
Additive manufacturing is being used in a variety of ways to support the production of complex castings. Some of the common additive manufacturing processes include fused filament fabrication, vat photopolymerization, powder bed fusion, binder jetting, and material jetting. In this paper, the authors discuss the use of (i) binder jetting technology to fabricate sand molds for casting complex, cellular structures and (ii) fused filament fabrication & vat photopolymerization to produce complex investment casting patterns. Binder jetting of foundry sand molds allows the realization of cast structures that are impossible to mold using conventional methods. The structures are lightweight, multi-functional and may provide exceptional blast protection. With regards to investment casting, wax is currently the primary material used for producing expendable patterns due to a desirable combination of thermal expansion, thermal conductivity and melting point. However, wax is not a typical printed material. A variety of polymers are available for additive manufacturing and, as would be expected, only a few are suitable for use as expendable patterns for investment casting. The best polymers for use as expendable patterns for investment castings are PMMA, epoxy resin containing a reactive diluent and ABS.
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“Metalcasting: Who and What Are We?” American Foundry Society presentation, American Foundry Society, Schaumburg, IL.
D.T. Pham and R.S. Gault, “A Comparison of Rapid Prototyping Technologies,” Internationaljournal of Machine Tools & Manufacture, 38 (1998) pp. 1257–1287.
T. Grimm, User’s Guide to Rapid Prototyping (Society of Manufacturing Engineers, 2004).
R.I. Noorani, Rapid Prototyping: Principles and Applications (John Wiley & Sons, Inc., 2005).
K.V. Wong and A. Hernandez, “A Review of Additive Manufacturing,” ISRN Mechanical Engineering, Article ID 208760 (2012).
http://www.zcorp.com/en/Solutions/Castings-Patterns-Molds/spage.aspx, 3DSystems, 333 Three D Systems Circle, Rock Hill, SC 29730.
http://www.exone.com/, ExOne™, 2341 Alger Drive, Troy, MI 48083.
http://www.voxeljet.de/en/, Voxeljet.
D.A. Snelling et al, “Mitigating Gas Defects in Castings Produced from 3D Printed Molds,” 117thMetalcasting Congress Conference Proceedings, St. Louis, MO (2013).
N.A. Meisel, C.B. Williams, and A. Druschitz, “Lightweight Metal Cellular Structures via Indirect 3D Printing and Casting,” International Solid Freeform Fabrication Symposium, Austin, TX (2012).
D. Snelling et al, “The Effects of 3D Printed Molds on Metal Castings,” International Solid Freeform Fabrication Symposium, Austin, TX (2013).
T. Mueller, “Guide to Casting Using QuickCast™ Patterns,” 3DSystems, 333 Three D Systems Circle, Rock Hill, SC 29730.
M. Seals, S. McKinney, and P. Walsh, “Comparison of Wax and 3D Printed Investment Casting Pattern Materials,” Materials Science & Technology 2012 Conference & Exhibition Conference Proceedings, Pittsburg, PA (2012).
M.E. Seals et al, “Evaluation of 3D Printed Polymers for Investment Casting Expendable Patterns,” accepted for publication in 118 th Metalcasting Congress Conference Proceedings, Schaumburg, IL (2014).
VisiJet™ SL Clear MSDS, http://www.3dsystems.com/sites/www.3dsystems.com/files/24672-S02–00-C-MSDS-US-English-VisiJet-SL-Clear.pdf
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Druschitz, A., Williams, C., Snelling, D., Seals, M. (2014). Additive Manufacturing Supports the Production of Complex Castings. In: Tiryakioğlu, M., Campbell, J., Byczynski, G. (eds) Shape Casting: 5th International Symposium 2014. Springer, Cham. https://doi.org/10.1007/978-3-319-48130-2_7
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DOI: https://doi.org/10.1007/978-3-319-48130-2_7
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