There are multiple claims about the inventor and nationality of the cold welding machine.

One viewpoint is that cold welding machines were developed by experts from the former Soviet Union based on circuit principles similar to electrical discharge machining machines. This cold welding machine combines the precision of laser welding and the strength of argon arc welding, making it an intelligent precision welding equipment.

 

However, some argue that the origin of cold welding technology can be traced back to Germany during World War II. At that time, Germany's welding technology had reached the world's top level, and cold welding technology was widely used for the maintenance and manufacturing of tanks, aircraft, artillery, and military machinery, playing an important role in the development of Germany's heavy industry. However, it was also mentioned that the Ukrainian Institute of Scientific Welding Science (led by academician of the Academy of Sciences, E.O. Panen) collaborated with tank manufacturers to combine Germany's cold welding technology with welding technology.

As for who the specific inventors are and their specific nationalities, there is currently no conclusive information to confirm. However, it can be confirmed that the development of cold welding technology involves contributions from multiple countries and research teams.