Effects of application on new casting methods on quality of casting and productivity of copper alloy castings
2013
Aćimović, Zagorka (Faculty for Technology and Metallurgy, Belgrade (Serbia)) | Andrić, Ljubiša (Institute for Technology of Nuclear and Other Raw Mineral Materials, Belgrade (Serbia)) | Terzić, Anja (Institute for Materials Testing, Belgrade (Serbia)) | Šekularac, Gavrilo (Faculty for Technology and Metallurgy, Belgrade (Serbia)) | Pavlović, Marko (Faculty for Technology and Metallurgy, Belgrade (Serbia)) | Vuković, Miloš (Faculty for Technology and Metallurgy, Belgrade (Serbia))
In this paper, results of investigation of new methods of casting of copper alloys with accent on the Lost foam process are presented. Phases of casting procedure were investigated, along with important process parameters and their influence on structure and properties of obtained castings. This technology enabled obtaining of the castings with complex construction and thin walls, and significant savings in casting procedure: expensive operations such are cleaning and machine processing of castings are minimized, while exploitation of metal is increased. Critical parameters of the process were investigated: casting temperature, types of refractory coatings, types of polymer models and their influence on formation of the structure. Results showed that new technology can be applied for obtaining of quality copper alloy castings which can be widely used in mechanical industry. It was shown that application of this method of casting attributes to the increasing of the costeffectiveness of the manufacturing and improvement of the quality of copper alloy castings.
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