PROCÉDÉ D'ÉVALUATION DE DEGRÉ DE CONTAMINATION DE SABLE ET DISPOSITIF D'ÉVALUATION DE DEGRÉ DE CONTAMINATION DE SABLE POUR SABLE DE FONDERIE

摘要

A method and an apparatus for evaluating the degree of contamination of foundry sand are provided that can measure the electrical conductivity of the foundry sand to evaluate the degree of contamination based on the measured electrical conductivity. The method for evaluating the degree of contamination of the foundry sand comprises the steps of preparing a standard sample (1, 101) and a comparative sample (201) of the foundry sand, measuring the electrical conductivity of the standard and comparative samples after a wetting treatment of them has been carried out, and evaluating the degree of contamination based on the measured electrical conductivity.