Linear Modeling of Quartz-Based Resin Bonded Sand Mould System Using Design of Experiments

The resin bonded core process is the room-temperature core making process made of sand and binder mixture accelerated by a catalyst. The quality of the cast products that are produced utilizing quartz sand-based resin bonded sand moulds largely depends on the mould properties, namely compression, shear and tensile strengths and permeability which depend on the input parameters. The relationship of these properties with the input parameters, such as percentages of resin and catalyst, number of strokes and curing time, etc,. are complex in nature. Full factorial design of experiments is used to establish the linear relationship between the said inputs and outputs. Main effects plots has been used to study the effect of amounts of resin and catalyst, number of strokes and curing time on compression, tensile and shear strengths, and permeability of the quartz sand-based resin bonded sand mould system. Analysis of Variance (ANOVA) has been performed to test statistical adequacy of the models. Twenty random test cases have been considered to test and compare their performances. It has been observed that the developed models are found to predict the responses of the resin bonded sand mould system with reasonably good accuracy.