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The gas nitriding furnace is mainly used for nitriding heat treatment operations, mainly for metal molds, tools, shafts, and gears. It can be mass produced. In addition, the nitriding furnace can also perform soft nitriding, tempering, stress relieving and other treatments on steel parts, as well as solid solution treatment on non-ferrous metals, making it widely used.

 

The characteristics of nitriding furnaces mainly include the following:

 

(1) During the working process of the well type gas nitriding furnace, its temperature, time, gas and liquid flow rate and other parameters can be automatically controlled, and appropriate adjustments can be made to achieve good results.

 

(2) The processing time of the well furnace workpiece is short, and the workpiece deformation is small.

 

(3) The material is not limited by the steel grade, and some powder metallurgy materials can also undergo soft nitriding treatment.

 

(4) After treatment, the fatigue strength, wear resistance, and corrosion resistance of the workpiece can be significantly improved, thereby improving its performance.

 

(5) The formed nitride layer has a certain degree of toughness and is not prone to peeling off.

 

The process of nitriding in a nitriding furnace, in simple terms, is to first introduce ammonia gas into the vacuum sealed tank of the nitriding furnace, then heat it to 520 ℃, and maintain it for an appropriate time. It should be determined based on the material of the workpiece and the infiltration layer, usually for 3 to 90 hours, to form a nitrogen containing strengthening layer on the surface of the workpiece, thereby improving the hardness, wear resistance, and fatigue strength of the workpiece.