Abstract
An alternative method for determining the empirical coefficients of the Kunin-Yurchenko equation of pressing is proposed. This method consists in constructing a polynomial regression tertiary model of the dependence of the density on the pressing pressure with subsequent approximate calculation of the empirical coefficients. The application of the proposed method showed good agreement with the experimental results (correlation ratio is not less than 0.97). Comparing the data obtained by the proposed method and the data obtained by the well-known method of “three pressings”, the same accuracy was found for both metallic and non-metallic powder materials. When processing large data arrays, for example, in adaptive algorithms for controlling the pressing process, it is preferable to use the proposed method, since it takes into account the influence of all experimental data on the compacting process of powder materials in the operating pressure range.
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