Gas nitriding
Compatible with low carbon steel to high alloy steel! Deep holes, blind holes, and sintered parts are also acceptable.
"Gas soft nitriding treatment" involves heating products placed in a furnace to 530-600°C in a mixed gas atmosphere of NH3, N2, and CO2. Nitriding is performed using the nitrogen component derived from the decomposition of NH3, while carburizing is conducted using the carbon component derived from the decomposition of CO2, resulting in the formation of a compound layer coating made of iron carbonitrides approximately 5-20μm thick on the product surface. The generated compound layer is dense and possesses high hardness along with moderate toughness, primarily contributing to improved wear resistance of the component surface. Additionally, by covering the surface with the compound layer, corrosion resistance is also enhanced. Furthermore, by performing oil cooling after gas soft nitriding, a solid solution nitrogen diffusion layer is created approximately 0.5mm deep beneath the compound layer, which is effective in improving fatigue strength. 【Characteristics (partial)】 ■ Applicable steel types: low carbon steel, carbon steel, alloy steel, cast iron, sintered steel, etc. (excluding stainless steel) ■ Capable of accommodating shapes unsuitable for isonitride due to salt clogging, such as deep holes, blind holes, and fine holes ■ The surface is less prone to scaling, and surface roughness is minimized, resulting in a clean and smooth appearance finish. *For more details, please download the PDF or feel free to contact us.
basic information
【Other Characteristics】 ■ Improved wear resistance due to a compound layer with high hardness and low friction coefficient. ■ Increased fatigue strength due to residual compressive stress on the surface and dislocation blocking caused by nitrogen solid solution in the diffusion layer. ■ Enhanced heat resistance due to the high-temperature softening properties of the compound layer. ■ Improved corrosion resistance as the surface is covered with a compound layer of non-metallic properties. *For more details, please download the PDF or feel free to contact us.
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Applications/Examples of results
【Specific Product Examples】 ■ Mechanical parts mainly for two-wheeled and four-wheeled vehicles - Crankshafts, balancer shafts, rocker arms, transmission gears, clutch housings, etc. ■ Other general mechanical parts, home appliance parts, etc. *For more details, please download the PDF or feel free to contact us.
