Friction Spin Welding
Friction rotation welding is a pressure welding process where two parts are joined by rotary motion and axial force. It has short cycle times and high strengths.
Physical-Chemical Mechanism of Action
In friction rotary welding, the parts to be joined are pressed together through rotational movement and axial force. The relative movement between the parts leads to plastic deformation, which bonds the material at the contact surface.
Metallurgical Relevance & Welding Risks
This process produces high strengths and is especially suitable for solid or hollow parts. However, too fast rotation can lead to uneven deformation, resulting in pores and cracks in the structure. Too low pressure, on the other hand, can result in poor bonding and lack of strength.
Workshop Practice & Instructions
To successfully perform friction rotary welding, a constant rotation speed of 100-200 rpm and a pressure of 50-100 MPa should be ensured. The process time is typically 30-60 seconds depending on part length and material. It is important to precisely regulate the rotation and pressure to ensure a homogeneous joint.