- Selection of weld head and source for different applications.
- Optimization of the welding cycle parameters (squeeze, welding and forge pressure, current, welding time, number of cycles) for different applications. Definition of operating windows.
The resistance welding technology is based on the formation of a welding spot or seam by the fusion and coalescence of two metallic surfaces. Contacting parts are joined by the heat obtained from resistance to eletric current and the application of pressure. Electric power sources are used to generate high intensity electrical currents (thousands of amperes) and electrodes through which that current flows.
Noteworthy advantages of this technology are high energy efficiency, low part deformation, remarkably high production rates, easy automation and absence of filler metal.
Most important resistance welding processes:
Challenges to be faced in the coming years: