Capacitor Discharge Welding (CD Welding) is the fastest form of resistance welding and utilizes capacitors to deliver the power to the part. Capacitors are charged with large amounts of energy. Then, the energy is rapidly released into the parts within milliseconds.
An example of a simplified CD welding circuit is shown below. As the capacitor is charging S1 is closed and S2 is open. Once the capacitor is charged to the desired value, S1 will open and S2 will close releasing all the energy into the part.
VERSATILITY and RELIABILITY! KAPKON has the most versatile CD power supply on the market thanks to their multi-capacitor source (MCS) system. The MCS system is a combination of 25 capacitors wired into 4 distinct quadrants or banks that can all be released independently and some simultaneously and in a very controlled manner. This ability to rapidly release multiple capacitor pulses without having to wait a few seconds for the capacitors to charge allows this system to take advantage of the properties of thermal coupling. As a metal increases in temperature, the electrical resistance goes up for that metal. As its resistance goes up, the metal’s rate of temperature increase when current feeds through it increases as well.
Due to this phenomenon, this system can drastically reduce the heat affected zone (HAZ) of a weld by compounding pulses very rapidly while still achieving a great bond! Also these, 4 distinct banks can be charged to a wide variety of energies giving this system the ability to do a vast amount of different materials, thickness combinations, and projection sizes.
One machine, endless possibilities.
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