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Reduction of welding energy to 1/3
Decarbonization Solution
Realizing carbon neutrality
The Japanese government declared that it would aim for carbon neutrality, which would reduce greenhouse gas emissions as a whole to zero by 2050.
Low-power products are also required for factory equipment to achieve carbon neutrality.
Current status of the vehicle body assembly process
A large number of spot-welding machines and parts feeders are used for projection welding of weld nuts and weld bolts on steel plates during the vehicle body assembly process.
Because this projection welding equipment requires a large current, we can say it is a type of equipment that requires a relatively large power consumption.
DENGENSHA TOA Solutions
Capacitor Discharge Welder (CDW)
In projection welding of nuts, a panel and a nut are placed between the upper and lower electrodes, and a current called a welding current flows between them.As a result, the nut projections heat up, and the nut and panel are welded.
When a regular single-phase Alternating Current welder (AC) is used, it is required to run around 10kA of welding current for about 0.1 to 0.2 seconds of welding time.In order to reduce welding power consumption, welding should be completed before the heat generated at the projections on the nut is absorbed by the surrounding panels and electrodes due to their thermal conductivity.Capacitor Discharge Welders (CDW) can be used in such cases.
A Capacitor Discharge Welder can store energy on capacitors and run a large current in a short time during welding.The welding time of a nut is less than 0.01 seconds, and the nut can be safely touched after welding because there is little heat conduction to parts other than the welded part.Compared to a single-phase AC-type welder with the welding parameters of an equivalent welding strength, a Capacitor Discharge Welder can perform welding at an energy level of approximately one-third.
In addition, while the power consumption of the conventional vibratory feeder is 100 to 200W, the rotary compact feeder consumes less than 40W.
DENGENSHA TOA is committed to contributing to carbon neutrality with these products.
