By: Raj Patra, Chiranjit Banerjee, Subhasis Sharma, Anubhab Karmakar, Ankit Mondal, Sujoy Mondal, Srijan Paul, and P. Krishna Rao
1-6 Student, Department of Mechanical Engineering, Asansol Engineering College, Asansol, India
7. Assistant Professor, Department of Mechanical Engineering, Asansol Engineering College, Asansol, India
8. Technical Assistant, Department of Mechanical Engineering, Asansol Engineering College, Asansol, India
Sand casting, a time- honoured technique for casting both ferrous and nonferrous metals, remains widely utilized due to its cost-effectiveness, material abundance, and reusability, particularly with sand as a primary resource. This study delves into the intricate dynamics of sand casting, examining its crucial parameters through meticulous analysis of existing research. The investigation focuses on the influence of factors such as sand composition, moisture levels, clay content, and binder type on mould strength. Findings from experiments in the present study reveal a significant correlation between clay percentage and compression strength, with an optimal value of 700 g/cm2 observed at 14% clay content. Similarly, shear strength demonstrates a peak value of 220 g/cm2 with 5% moisture content and 87% sand composition, declining thereafter with increasing clay content. Moreover, variations in water content exhibit a notable impact on compression and shear strength, with an optimum compression strength of 340 g/cm2 at 4% moisture content. The refinement of sand mixtures to improve mouldability and reduce defects in metal casting processes is the result of numerous researchers’ collective efforts. Defects related to mould preparation are a common cause of casting product rejection. To mitigate this issue, it is necessary to explore adjustments in the sand mixing process, including the proportions of natural and chemical binders added to the mixture. This article aims to identify the optimal balance of these parameters to develop superior moulding sand mixtures, thereby reducing rejection rates. These insights underscore the intricate interplay of material composition and process parameters in sand casting, offering valuable guidance for optimizing casting performance.
Keywords: Moulding Sand, Moisture Content, Bentonite, Mechanical Property, Fineness number
Citation:
Refrences:
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