Abstract
The suitability of blackstrap molasses as a core binder used in non-ferrous sand casting has been investigated. Various core mixture samples were made with molasses varying from 1-5%, soybean oil 1-3%, and Chalawa Sand the balance. The foundry physical properties of the samples; Permeability, Green Compressive Strength, Dry Compressive Strength, Green Shear Strength, Dry Shear Strengths were determined via standard procedure. The sample of 2% molasses, 1% soybean oil, and the balance Chalawa Sand was chosen as the best core mixture based on the highest and optimum Baked Compressive Strength, Baked Shear Strength, and Permeability. Using the optimum mixture, a proto-type aluminium-silicon casting was made. The result revealed that the core has good collapsibility, and the surface finish of the internal cavity of the cast bushing is good.The research work has provided economically cheaper and environmentally friendly organic core binder from locally available raw material for industries as against poisonous and expensive resinous core binders.
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