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Experimental Analysis and Investigation of Groove Porosity in Rear Cross Over Brake Disc of FG260 Material

Vaibhav Vijay Patil, Mahesh A Sutar

Most severe problem that foundry industries always face named casting defects especially „porosity‟, since it‟s occurrence is 82% among all in case of our research. This paper presents the experimental analysis and investigation of groove porosity occurred near the groove on brake disc. This paper reflects the research done in Ashta Liners Pvt. Ltd. Ashta for reduction in rejection of casting due to groove porosity defect. This is achieved by altering the casting parameters like binder ratio, casting temperature, addition of Titanium, Zirconium as inoculant and Iron oxide. Result obtained shows that the additions of 0.25% red iron oxide, 0.3 to 2.5% Titanium and 0.5 to 2.5% Zirconium are surprisingly more effective as compared to others in eliminating porosity. Use of core coating by Iron oxide results in reduction of porosity occurrence. The results obtained in this research will help metal casters to reduce porosity defects in grey iron castings.