The VKN series pre-vacuum gas nitriding furnace is a high-end heat treatment equipment that combines vacuum technology and gas nitriding process. Thanks to the high cleanliness environment and the precise and controllable quality of the infiltration layer, it can integrate nitrogen into the surface of the metal material to form a dense compound layer, thereby improving the wear resistance, corrosion resistance, heat resistance and mechanical strength of these components. Mainly suitable for gears, shafts, valves, molds and other parts of the pre-oxidation, nitriding, nitrogen carburizing (soft nitriding), after oxidation, tempering, annealing and other heat treatment process switching, its core advantage is high efficiency, precision and environmental protection, widely used in aerospace, automotive, electric power, petroleum and industrial manufacturing and other fields.