The effects of rotational and travelling speeds and down force on the torque in Friction Stir Processing (FSP) process are presented. The relationship between the rotational speed and torque was modelled by an exponential function. The dependence of the travelling speed and down force affecting the torque was successfully approximated by the linear functions. To find a dependence combining the spindle torque acting on the tool with the rotational speed, travelling speed and the down force, the RSM methods was applied. Studies have shown that the increase of the rotational speed causes decrease of the torque and the increase of the travelling speed causes the increase of the torque at the same time. Tests were conducted on casting aluminum alloy AlSi9Mg. The experimental results and calculation were compared.Keywords: Friction Stir Processing, cast aluminum alloy, response surface methodology.
© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.