The Effect of Bridge Orientation in Casting Machine on the Castability and Quality of Base Metal Castings
Introduction: The aim of this study was to evaluate the effect of bridge orientation in casting machine on castability and quality of base metal castings. Methods: Three groups of patterns with different direction and lengths in casting machine were casted and then studied qualitatively and quantita...
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| Autores principales: | , , , , |
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| Formato: | Libro |
| Publicado: |
Mashhad University of Medical Sciences,
2013-01-01T00:00:00Z.
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| Acceso en línea: | Connect to this object online. |
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| Sumario: | Introduction: The aim of this study was to evaluate the effect of bridge orientation in casting machine on castability and quality of base metal castings. Methods: Three groups of patterns with different direction and lengths in casting machine were casted and then studied qualitatively and quantitatively using mean and standard deviation in table of frequency. Results: Larger nodules and porosities were on the joints of sprue in horizontal specimens (P=0.01 and 0.048, respectively). There was no significant difference in castability between 3-, 5- and 6-unit bridges in relation to their direction in casting machine (P=0.5). An increase in bridge length led to more variation in length and width. The position of bridges also played an important role in the length variation in bridges. Conclusion: The direction of bridges had no effect on base metal castability but a vertical position resulted in a better casting quality and an increase in length of the bridges caused more defects in castings. |
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| Notas: | 2322-4150 2252-0317 |