• S. M. Ingale
• Dr. V. A. Raikar

Castings are widely used in all the industries which are metallic, machine components. Production of casting will continue to play an important role in the economic prosperity of a nation. Casting soundness include physical appearance with dimensional accuracy and better surface finish and free from any kind of defects. This is possible with new and better techniques of production, based on stringent control of quality at each stage of casting production and the equipment’s used in the processes. In this paper an attempt has been made to control the defects arising due to molding sand. Quantitative approach of fish bone diagram is proposed for controlling of defects. It requires weightage, probability and impact values as input based on experience and historical data. Risk values are the calculated for main causes and sub causes to determine root cause. Based on the root cause strategy is formulated to control the rejection in the proposed method. This method is very useful in identifying critical process parameter which requires immediate attention.

Quantitative Fish Bone Diagram, Probability, Impact, Risk Value, Critical Process Parameter

"INVESTIGATION OF SAND INCLUSION CASTING DEFECT USING QUANTITATIVE FISH BONE DIAGRAM ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.202-206, March-2019, Available :http://www.jetir.org/papers/JETIRAH06035.pdf

"INVESTIGATION OF SAND INCLUSION CASTING DEFECT USING QUANTITATIVE FISH BONE DIAGRAM ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp202-206, March-2019, Available at : http://www.jetir.org/papers/JETIRAH06035.pdf