Effect of resin ratio and baking temperature to the properties of biodegradable resin bonded sand casting mould

Seman, Mohd Ikhwanul Hayat (2015) Effect of resin ratio and baking temperature to the properties of biodegradable resin bonded sand casting mould. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Sand casting is a process of melting the metal and pouring it into a preformed cavity, called mould, allowing the metal to solidify and then breaking up the mould to remove casting. The sand must contain a binder (resin) that works to hold the sand particles together so that the sand mould is strong enough when the molten metal is poured into it. Typically, the resin is made from non-biodegradable materials that have issues on reclamation and disposal of the sand. Furthermore, the resin of non-biodegradable sand mould cause hazard to the environment. There are two types of resin commonly used in sand casting industry which are furan and phenolic resin. In this study, the effect of biodegradable resin (PVA and modified urea) ratio and baking temperature to the properties of resin bonded sand for casting were investigated. There were three experiments conducted during this study which are compressive strength test, loss on ignition (LOI) test, and permeability. The resin ratio and baking temperature as the parameters or factors and the value of compressive strength, loss on ignition (LOI), and permeability as the responses. There were three levels for each of the parameters which are 3%, 3.5%, and 4% for resin ratio and 150°C, 175°C, and 200°C for baking temperature. At the end of the experiment, the collected data was then converted into graphical form which consist of bar chart, main effect plot and interaction plot. As a conclusion, recommendation is included at the end of the study for future work improvement.

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