The ion nitriding process is widely used in the petrochemical machinery industry. Ion nitriding is a chemical heat treatment process, through the vacuum conditions, to the furnace into the dilute nitrogen-containing gas, the parts connected to the cathode of the ionic power supply, the furnace body connected to the anode, applying hundreds of volts of DC voltage, so that the gas ionisation of the furnace, nitrogen ions directional impact on the surface of the parts, resulting in a glow discharge and heating of the parts. This process makes the surface of the parts compound, absorption of nitrogen atoms, the formation of a high concentration of nitrogen-containing layer and diffusion to the heart, and ultimately get the desired nitrided layer. Ion nitriding process is widely used in the petrochemical machinery industry to improve the surface hardness, wear resistance, fatigue resistance and corrosion resistance of steel parts due to its advantages of energy saving, gas saving, high efficiency, good quality and no pollution.

In addition, ion nitriding is not only applicable to a variety of materials, but also has the characteristics of small deformation, easy to achieve local nitriding and uniform nitriding, light pollution to the environment, and good labour conditions, which makes it more widely used in the field of petrochemical machinery. The basic principle of ion nitriding process is to use ion beam bombardment of the metal surface, so that the atoms on the metal surface react with nitrogen ions to form a nitride film, and this process can be realised on a variety of materials, including but not limited to key components in petrochemical machinery. Through its unique advantages and wide range of applications, the ion nitriding process plays an important role in the petrochemical machinery industry, significantly improving the performance and durability of mechanical parts.