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The PTA welding process compresses a free arc column using a water-cooled copper nozzle, concentrating the energy and fully ionizing the gas within the arc. This type of arc is known as a plasma arc, which can reach temperatures of 10,000 to 20,000°C. The intense heat rapidly melts both the alloy powder and the surface of the base material, forming a high-quality alloy weld layer on the substrate.

Laser cladding is a process in which alloy powder is added to the surface of a substrate and melted together with a thin layer of the substrate using a high-energy-density laser beam. This results in the formation of a metallurgically bonded alloy coating on the surface.

The oxygen-acetylene powder welding process involves heating alloy powder with an oxy-acetylene flame until it melts or reaches a plastic state, then spraying and depositing it onto the treated workpiece surface. This results in a weld layer on the metal substrate with special properties, such as wear resistance, corrosion resistance, and high-temperature oxidation resistance.