Heating System for Riser Size Minimizing in Sand Casting Process and Its Experimental Verification

In the conventional sand casting process, the size of the riser is made larger than that of the cavity (product part) in order for the molten metal in the riser to solidify at a later stage than the molten metal in the cavity. In this study, a continuous heating method is developed and applied to th...

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Bibliographic Details
Published in:Metals (Basel ) 2017-04, Vol.7 (4), p.130
Main Authors: Jin, Chul Kyu, Seo, Hyung Yoon, Kang, Chung Gil
Format: Article
Language:English
Subjects:
Automotive parts
Casting
Heating
Housings
Magma
Sand casting
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Summary:In the conventional sand casting process, the size of the riser is made larger than that of the cavity (product part) in order for the molten metal in the riser to solidify at a later stage than the molten metal in the cavity. In this study, a continuous heating method is developed and applied to the riser, using a cylindrical heater, to minimize the size of the riser. A mold having four cavities is designed for casting turbine housings. The height and diameter of the riser are chosen to be 80 mm and 20 mm, respectively. Solidification analysis results, using the analysis program MAGMA soft for casting simulation, showed that when the heater is implemented, the riser is the last to solidify. However, without the heater, the riser solidifies before the cavity, thus causing the riser to function improperly. Moreover, misruns are generated in the casted product if the heater is not implemented, as opposed to the case of a solid product without any defects, with the heater attached in the riser.
ISSN:2075-4701
2075-4701
DOI:10.3390/met7040130