Decarbonization Solution

Water-cooling-less capacitor type NDZ
(stationary spot welding machine)

Conventional resistance welding machines require cooling water to cool transformers, thyristors and electrodes.Water-cooling-less capacitor type NDZ utilizes low heat, characterized by the capacitor welder’s short burst of high weld current, as well as the exhaust air that would otherwise be disposed of in the atmosphere.
This saves 1,728 kWh of electricity per year (our estimate) compared to a water-cooling type using a chiller.This translates into an annual reduction of 1,014 kg of CO2 emissions.
In addition to this, the air-cooled welder has many other advantages, such as no condensation even in humid conditions, no water leakage when changing electrodes, and no chiller maintenance.
Additionally, general advantages of capacitor-type welding machines include the ability to reduce power consumption during welding to anywhere from one-half to one-third compared to single-phase AC and DC inverter welding machines, the ability to weld with less thermal strain, and the ability to improve welding quality.

NDZ air-saving system

Reduced air supply pressure on the open end of the pressure unit allows reduction of air consumption. Air consumption can be reduced by up to 38%, which translates into a reduction of 461 kg (our estimate) of annual CO2 emissions.
Simply adding a pressure reducing valve on the open side would result in an extremely slow opening speed; however, with optimal selections of air equipment and parameters, our approach has been successful without notably extending the cycle time.
(*Note: Not applicable to water-cooled capacitor-type NDZ)

Compact feeder

The conventional vibratory feeder has a large vibrating bowl, which consumes around 100-200 W of electricity during vibration. In contract, the compact feeder uses a motor to simply rotate a small rotating plate, which consumes less than 40W even during rotation, achieving a lower electric consumption level.