This article proposes a method for quantitative assessment of a multilayer material interaction with a solvent. It is proposed to assess the effect of solvents on the material by the value of its surface's maximum swelling. The advantage of this method is that the determined value of the outer layer's maximum surface swelling does not depend on the time of swelling and is least influenced by the properties of lower layers.
Here, are considered the known papers on technological quality assurance of parts surfaces in abrasive processing. The analysis of these research and the issues raised have shown that the solution of tasks related to improvement of the surface layer quality, accuracy, and durability of parts is an actual and promising direction for further research. The basic ways of the decision of a problem of improvement of the part processed surfaces quality are defined. The general disadvantages of the existing empirical dependencies for determining the roughness in different methods and conditions of grinding of the parts surfaces are noted.Keywords Technological support Á Quality of the treated surfaces Grinding Á Parts
IntroductionIn the manufacturing technology of parts for various purposes, abrasive methods are widely used to improve their quality of the surface layer. The abrasive treatment is, in most cases, the final stage of parts manufacturing. The purpose of such treatment is to impart the desired performance properties (PP) to the treated surface, which are, in large part, determined by geometric and physical and mechanical parameters. These parameters include, first of all, roughness, microhardness, and residual stresses of the surface layer.
The results of studying the effect of the grain shape on abrasive disc performance are presented. The grain shape was conveniently divided into two classes: isometric and non-isometric. The results of the microhardness tests, elastic properties tests, and mechanical strength tests of grains various in shape are given. The test results make it clear that grain microhardness slightly decreases as the grain shape changes from isometric to the plate shape. The grain elasticity also decreases. It is demonstrated that variations in the industrial grain volume and weight can be indicative not only of the changed grain size composition, chemical composition etc., but of a significant variation in the correlative content of grains different in shape. The bulk weight difference of diversiform grains is important for the structure, structural density, and matrix packing of abrasive discs. It is found that the grain shape is an essential feature that predetermines abrasive tool performance to a greater extent.
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