An experimental flow model of a centifugal casting system Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/sj1394632

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  • Centrifugal casting has been a successful technique for quickly filling molds, but little is understood about the fluid flow characteristics that occur during filling. The understanding of these flow characteristics and the application of this knowledge should improve the quality of metal parts cast by this process. The subject of this thesis is the experimental testing of various centrifugal rotation rates, spoke diameters, gating styles, gate contact sizes, and downsprue bottoms to determine what affect they have on the fill time and roughness of fill of the molds. The collected data were statistically analyzed and the following recommendations were made: 1. Further modeling should be done in an environment with pressure approaching the vapor pressure of water to avoid the affects of air entrapment in the fluid. 2. Center or tee gated molds should be used in conjunction with 1.25" diameter spokes and 120 rpm rotation rate for minimum jetting and oscillation of the fluid in the mold. 3. Molds should be back filled. 4. Molds should be filled through the largest gate contacts possible.
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  • File scanned at 300 ppi (Monochrome, 8-bit Grayscale) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 5.0 was used for pdf compression and textual OCR.
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