A kind of rapid ion nitriding method

Abstract

The invention relates to a fast ion nitriding method. The fast ion nitriding method comprises the following steps that original-state steel is machined and cut into samples; the samples are sequentially subjected to tempering treatment and polishing treatment, then are subjected to ultrasonic cleaning in an organic solvent after the polishing treatment, and then are blow-dried; the samples are subjected to abrasive blasting treatment, are subjected to ultrasonic cleaning in an organic solvent after the abrasive blasting treatment, and then are blow-dried; and the samples are arranged in an ion nitriding furnace, are subjected to ion nitriding surface treatment by introducing hydrogen for sputtering, and are then cooled to room temperature. The fast ion nitriding method has the beneficial effects that the defects in a traditional ion nitriding method that a nitriding layer is thin, and the nitriding efficiency is low are overcome; during the abrasive blasting treatment, abrasive grains continuously impact on the surfaces of the samples under the effect of air flows, so that plastic deformation is formed on the surface layers of the samples, and a series of surface defects such as dislocation are caused; the operation procedure is simple and convenient; the nitriding speed and the nitriding layer thickness can be improved in a short time; and the fast ion nitriding method has the advantages of being high-efficient and energy-saving.

Description

technical field [0001] The invention relates to a fast ion nitriding method. Background technique [0002] In engineering applications, ion nitriding is a widely used surface heat treatment technology. This technology mainly produces active nitrogen atoms through cathode sputtering, enriches on the surface of the sample and continuously diffuses into the matrix, and finally forms nitriding. layer. [0003] As a surface pretreatment method, sand blasting can not only remove impurities and scale on the metal surface, but also change the surface structure and properties of the material. [0004] In chemical heat treatment technology, nitriding technology includes gas nitriding, ion nitriding, salt bath nitriding, etc. Although ion nitriding and salt bath nitriding can obtain a certain thickness of nitriding layer, the former two nitriding cycles are longer and the utilization rate of equipment resources is not high, while the latter is easy to pollute the environment and has ...

AI Technical Summary

Problems solved by technology

However, the single ion nitriding cycle is long, which is very easy to cause waste of resources. In order to expand the further wide application of ion nitriding technology, how to shorten the production cycle, improve resource utilization and nitriding efficiency has always been a problem that people pay close attention to. Sand blasting + ion nitriding method can reduce the waste of resources and improve production efficiency at the same time

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