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Casting defects analysis by the Pareto method

Borowiecki B., Borowiecka O., Szkodzińska E.

Archives of Foundry Engineering

2011

Vol. 11, iss. 3 spec.

33--36

On the basis of receive results formed of diagram Pareto Lorenz. On the basis of receive graph it affirmed, that for 70% general number casting defects answered 3 defects (9 contribution – 100% defects). For 70% general number defects of influence it has three type of causes: sand holes, porosity and slag inclusions. The defects show that it is necessary to take up construction gating system. The remaining 8 causes have been concerned only 25%, with general number of casting defects. Analysis of receive results permit to determine of direction of correct actions in order to eliminate or to limit the most defects.