Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Lost Foam"”.
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Effect of pattern and coating properties on defect formation in aluminum lost foam castings
… characterization of these defects in aluminum lost foam castings. Several statistically designed experiments were used to evaluate the effects of various gating designs, aluminum alloy compositions, foam pattern properties, and coating properties. Metal velocity measurements, along with the …
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Metal-foam interface stability during the filling of lost foam moulds with aluminium alloys
Aluminium Lost Foam castings were made using gravity and counter-gravity filling techniques. Tensile strength was found to be most uniform in those castings which had been filled slowly from the bottom and where the metal front had remained stable throughout filling sequence. Pores containing …
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The mechanisms of mold filling and casting defect formation in the lost foam casting process
… a better understanding of the mechanism by which foam patterns are decomposed and their decomposition products are transported through the refractory coating in the lost foam casting process. These tests have led to a refinement of current physical models for mold filling and provide additional …
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A study of defect formation due to flow instability during mold filling in lost foam casting
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2001.
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The creation of fiberglass tanks and parts for autonomous underwater vehicle constant buoyancy power supply
… construction, the final tanks were made using lost foam molds and epoxy resin. This secondary purpose of this thesis was to provide a detailed description of how to create fiberglass parts, especially custom designs with challenging shapes. Molds were made using a variety of techniques, with …
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Zavedení výroby odlitku na spalitelný model v podmínkách ZPS Slévárna, a. s.
Cílem této diplomové práce je zhodnotit možnosti zavedení výroby odlitku na vypařitelný model v konkrétních výrobních podmínkách slévárny s důrazem na co možná nejmenší zásah do zavedeného výrobního procesu. Práce si rovněž klade za cíl, pomocí srovnání na konkrétních zkušebních odlitcích, zmapovat …