Traditionally, plasma torches have lasted a few hours. Now, with new revolutionary designs, they can last for several years.
Researchers at the Hefei Institutes of Physical Science in China have successfully extended the lifespan of a plasma torch from a few hundred hours to several years. In doing so, the team has allegedly achieved the world’s longest-lasting plasma torch, a press release said.Inert gases such as helium, neon, and argon are typically used in plasma torches. Argon mixed with hydrogen is the industry’s most common gas mixture since it is cost-effective and produces the hottest flame and clearest cuts.
The plasma torch’s efflux also helps remove the molten material from the surface. Unlike cutting using oxygen, plasma cutting does not oxidize the metal under process. It, therefore, can be used across a wide spectrum of materials, such as stainless steel, cast iron, aluminum, and non-ferrous alloys.
In all these applications, the cathode gets depleted and needs to be replenished. This limits the lifespan of the torch while increasing the maintenance costs associated with the equipment.A research team led by Zhao Peng, a professor at the Hefei Institutes of Physical Science, has found a simple and effective solution to the cathode depletion problem.
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