Method for treating toughness and hardness of drill bit buttons

A method, performed by a centrifuge, for treating toughness and hardness of drill bit buttons, wherein the centrifuge comprises a chamber formed by a stationary side wall and a bottom which is rotatable around a rotation axis,

• the bottom comprising one or more protrusions which at least partly extends between the rotation axis and the side wall,
• the side wall comprising at least six pushing elements arranged around a periphery of the side wall,
• and where the method comprises:
• rotating, by rotation of the bottom with the protrusions, the drill bit buttons around the rotation axis,
• pushing, by the pushing elements, the drill bit buttons from the side wall during the rotation of the bottom,
• collectively forming the drill bit buttons into a well gathered torus shape at the bottom of the chamber, wherein the drill bit buttons avoid climbing high on the chamber side wall and fall down onto the bottom, for inducing collisions between the drill bit buttons,
• thereby treating the toughness and hardness of the drill bit buttons.