THE RELIABILITY OF THE INTERFERENCE FIT

The article considers the character of the pairing contact surfaces of the two bushings, made of alloy steel and aluminum alloy, with the guaranteed tightness (N = 0.03 mm) when pressing-in details at cold condition. The highest stress of the material is observed on the inner surface of the bushing of alloy steel in the direction of the coordinate axis Z on the part action of the efforts of pressing-in. This increases the strength of adhesion of the surfaces of the bushings on that side. Presents a comprehensive picture of changes in the direction of the velocity of deformation of materials in the longitudinal and transverse cross sections are pressed bushings. The maximum value of kinetic/internal energy ratio for bushing made of alloy steel is 22 at the end of the time range of the process of pressing-in.