Explanation

Also known as glow ion nitriding, ion bombardment nitridation, plasma nitriding. A heat treatment method that uses glow discharge phenomenon to infiltrate nitrogen atoms into the surface of workpiece. A dedicated glow ion nitriding furnace is used, with the workpiece as the cathode and the furnace body as the anode. After the furnace is vacuumed, ammonia gas is introduced, and under the action of a high voltage electric field, a glow discharge is generated. The ammonia gas is partially divided into molds and placed in the vacuum container of the glow discharge device. The mold serves as the cathode, and the white wall of the container serves as the anode. Thin nitrogen-containing gases, such as ammonia and nitrogen mixtures, are filled, and the gas atoms become charged ions through the action of a high-voltage direct current electric field, Impact the surface of the mold at a very high speed, and heat the mold to the required temperature through energy conversion; At the same time, when ions bombard the mold surface, nitrogen ions are absorbed by the mold surface and diffusion to the white part of the metal, forming a nitriding layer to achieve the purpose of hardening.

Classification