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AssigneePlasma Laser Technologies Ltd.
InventorsIgor Dykhno, Igor Parneta, George Ignatchenko, Michael Chizhenko
Estimating the term…
A welding torch which combines features of both laser and plasma-arc welding torches. A laser beam is directed by an objective lens so that it is co-linear with the central axis of a plasma-arc torch. The laser beam passes through a planar or conical cathode electrode placed at the bottom orifice of the torch. A coaxial aperture having a diameter less than that of the laser beam is drilled into the cathode to allow the laser beam to pass through the cathode. A constricting nozzle is placed under the cathode, with the laser beam passing through the axis of the nozzle. As with a standard plasma-arc torch, a gas is forced through a chamber having the cathode and nozzle at its bottom end. As the cathode is heated by the laser radiation, the gas is ionized and a plasma-arc is formed. As the laser beam passes through the nozzle, it comes to a focus and interacts with the plasma-arc formed between the cathode and a workpiece. The resulting interactions between the plasma-arc and laser beam form a plasma-laser discharge which acts to additionally constrict the laser beam and plasma-arc and increase the energy density of the welding spot formed on the workpiece.
A plasmotron torch, for applications such as welding, combining laser and plasma-arc technologies, and capable of efficiently producing high energy densities at the surface of a workpiece, comprising:
A method of forming a high-energy density spot on a workpiece having a surface, comprising the steps of:
Dependencies are inferred from the claim text.