Friktsioonkeevituse

Friktsioonkeevitus, also known as friction welding, is a solid-state joining process that utilizes the heat generated by the friction between two workpieces to achieve a weld. One part is typically rotated at high speed while being pressed against a stationary part. The relative motion and applied pressure create significant heat due to friction, which softens the surfaces of both materials. Once sufficient plastic deformation occurs, the rotation is stopped, and a force called "upset" is applied to forge the materials together. This process results in a strong, metallurgical bond without the need for melting the base materials or adding filler metals.

The primary advantages of friction welding include its ability to join dissimilar metals, its high joint strength and integrity, and its suitability for automated production lines. The process is also environmentally friendly as it produces minimal fumes and no slag. It is commonly used in industries such as automotive, aerospace, and energy for applications like manufacturing shafts, connecting different types of metal components, and producing specialized tooling. The specific parameters, such as rotational speed, pressure, and friction time, are critical and depend on the materials being joined and the geometry of the parts.