It is the welding method used fort he repair, fill or renewal of parts that have been subject to heat, thermal fatigue, corrosion or friction through continuous casting rollers, relays, gas, water, and steam used in the environment of valves and flanges. It is applied to obtain weld metal in martensitic structure. Martensitic and mertensitic-ferritic steel castings can be applied to tool steel for rolling and forging purposes.