Reducing Ammonia Consumption and Emissions Using Zeroflow Gas Nitriding Free

Gas nitriding has been performed in many ways with many variations over the years (using NH₃ only, NH₃ + dissociated NH₃, and NH₃ + N₂). Practical heat treating today demands lower costs and gas and energy consumption. With the challenges of ammonia storage, its costs and emissions, the ZeroFlow process reduces ammonia gas consumption and still offers the same capability to affect the nitrided layer, resulting in lower emissions of ammonia and greenhouse gases. Prior analysis has shown that ZeroFlow control allows control of not only the nitriding potential, but also phase composition of the nitrided layer, its thickness and the constituents of the atmosphere used for nitriding. Tremendous experience via actual commercial production has proven that this method of gas nitriding, and the atmosphere used, still allows for precision in controlling growth kinetics of the nitrided layer. The impact on the ammonia consumption and emissions is significant.