Ion nitrogen-carbon-sulfur multi-element co-permeation auxiliary equipment, treatment system and method

Abstract

The invention provides ion nitrogen-carbon-sulfur multi-element co-permeation auxiliary equipment, a treatment system and a method, and the auxiliary equipment comprises a hollow cathode ion source placed at the top of a furnace body of an ion diffusion furnace, an insulating shell placed on the side wall of the furnace body, and a plurality of coaxial electromagnets which are sequentially arranged in the insulating shell at intervals from inside to outside, the winding modes of every two adjacent electromagnets are opposite, and the multiple electromagnets are used for forming a controllable magnetic field in the ion diffusion furnace so as to change the movement track of electrons on the surface of the metal workpiece and the magnetic domain of the metal workpiece. The treatment system comprises an ion diffusion and permeation furnace, ion nitrogen-carbon-sulfur multi-element co-permeation auxiliary equipment, a transformer, a vacuum pump, a gas supply bottle and an electric control cabinet. The treatment method comprises the steps that gas containing nitrogen, carbon, hydrogen and sulfur is introduced into the furnace body, and a controllable magnetic field is provided for the metal workpiece. Gaps of sulfide on the surface of the workpiece can be reduced, the hardness is in the trend of slow reduction, the surface hardness of the workpiece is improved, and the service life is prolonged.

Description

technical field [0001] The present disclosure relates to the technical field of ion nitriding treatment on the surface of metal materials, in particular to auxiliary equipment, treatment systems and methods for ion nitrogen, carbon and sulfur multiple co-infiltration. Background technique [0002] Diffusion is one of the common methods of metal surface modification. It is widely used in industrial production because it can greatly improve the hardness, wear resistance, and corrosion resistance of metal surfaces. Infiltration is a heat treatment method that infiltrates atoms into the surface of the workpiece and changes the chemical composition and structure of the surface of the workpiece. Usually there are nitriding, carburizing, nitrocarburizing and multi-component co-carburizing and so on. At present, there are two main methods of permeation expansion commonly used: gas permeation and ion permeation. Ion penetration is to ionize the gas by applying a voltage between the...

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Problems solved by technology

However, after sulfur is added to nitrocarburizing, there is a large gap between the sulfides on the surface of the workpiece, and the hardness decreases, which greatly reduces the service life of the workpiece in the heavy-duty friction pair.

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