Manual

The application and control of force during the resistance welding process is extremely important. The mechanical system to do this is generally referred to as the weld head. The weld head (including the welding electrodes), functions to force the workpieces together and hold them during the weld. The weld head provides the current path, welding pressure or force, triggers (initiates) the weld current, provides follow-up force as the workpieces melt together, and cools the workpieces after the weld. Manual weld heads are actuated using a foot pedal:

• Force tube or module is spring loaded for fast follow up
• Force is set manually using rotary knob
• Internal switch detects the set force and sends firing signal to weld control
• Impact force is determined by operators foot speed