from the conferences organized by TANGER Ltd. provisional website
The method of determining the tendency to galling in microforming processes is introduced. The method consists in the drawing process of the strip with a width of 1-3 mm and a thickness of 0.3-1 mm using a cylindrical tool with a radius of 2.5 mm. The process force as a function of sliding distance is recorded. On the basis of the character of the force course, the coefficient of galling tendency is determined. The process is carried out in a specially designed device placed on the table of testing machine. The device is equipped with a piezoelectric vibrator that allows the tool to be vibrated in accordance with the tape drawing direction with adjustable frequency and amplitude. The stand has been tested statically and dynamically, achieving the assumed construction parameters, i.e. the vibration amplitude in the range of 0-10 µm and the frequency 0-300 Hz. In the initial tests carried out, the effect of using vibrations with specific parameters on the tendency to galling and the surface condition of deformed materials was found.Keywords: Microforming, galling, vibration-assisted
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