Functional dependencies between sample properties from structured molding and core mixtures

Abstract

Article is devoted to functional dependencies between the parameters of structured molding and core mixtures establishment, which are determined on samples using standard and generally accepted methods. The aim of the work is properties of structured molding and core mixtures for disposable casting molds predicting accuracy improvement.To establish the general structure of proposed dependences, dimensional analysis -theorem has been used. According to theoretical studies results, functional dependencies between flaking, brittleness, strength, castings from castings molds and cores knockout work and number of parameters and properties of structured molding and core mixtures were established for the first time. These dependencies implementation will improve analysis and prediction of number of properties levels accuracy, as well as accelerate compositions of molding and core mixtures optimizing process when used in foundries. Ultimately, accuracy increasing in prediction of structured mixtures properties will entail castings quality improvement and level of cast parts nonconformance decreasing. It has been noted that, in first approximation, it’s permissible to estimate mixtures knockout ability according to their residual strength values.