indentation machine welding cycle spot welding and projection welding cycle consists of four basic stages (spot welding process):
(1) pre-compression stage of the identification machine-the electrode is lowered to the current-on stage to ensure that the electrode is pressed against the workpiece so that there is proper pressure between the workpieces.
(2) welding time of the identification machine-the welding current passes through the workpiece and generates heat to form a nugget.
(3) maintenance time of the identification machine-cut off the welding current, and the electrode pressure continues to be maintained until the nugget solidifies to a sufficient strength.
(4) the rest time of the identification machine-the electrode starts to lift up and the electrode starts to fall again, starting the next welding cycle.