45 steel transmission shaft quick ion nitriding method

Abstract

The invention relates to a 45 steel transmission shaft quick ion nitriding method. A 45 steel transmission shaft is sampled to machine and cut as a sample; oil stains on the surface of the sample are removed; the thermal refining and the polishing are performed for the sample in sequence, and the polished sample is ultrasonically cleaned and dried in organic solvent; the sand blasting is performed for the sample, and then, the sample is ultrasonically cleaned and dried in the organic solvent after sand blasting; the sample in positioned in an ion nitriding furnace, hydrogen is sputtered, and dry air is introduced for ion preoxidizing; and the ion nitriding surface treatment is performed to cool the sample to reach the room temperature. The 45 steel transmission shaft quick ion nitriding method has the following beneficial effects: the operation flow is simple and convenient; gas adopted by the ion preoxidizing is air, so that the acquisition is easy, the cost is low, and the nitriding speed and the nitriding layer thickness can be increased in a short time; and the 45 steel transmission shaft quick ion nitriding method has the advantages of high efficiency and energy conservation, and can realize large-area industrial production.

Description

technical field [0001] The invention belongs to the field of metal surface chemical heat treatment methods and relates to a fast ion nitriding method for a 45 steel transmission shaft. Background technique [0002] As a high-quality carbon structural steel, 45 steel has good mechanical properties, such as high strength and good machinability. After quenching and tempering, it can obtain certain toughness, plasticity and wear resistance, so it is widely used Applied to various important structural parts. However, with the expansion of its application range, the requirements for material properties are becoming increasingly strict. Therefore, in order to make 45 steel adapt to different working environments, it is generally necessary to carry out surface treatment. The commonly used technical methods include salt bath treatment, Gas nitriding and ion nitriding, etc. Among them, ion nitriding is a widely used chemical heat treatment technology, which can significantly improve...

AI Technical Summary

Problems solved by technology

In recent years, although many infiltration methods have been invented, such as mechanical grinding + ion nitriding, laser treatment + ion nitriding, multi-element co-infiltration and infiltration, etc., in the case of strict requirements on material properties, the existing technology has It cannot fully meet the requirements of various aspects. In order to further expand the wide application of ion nitriding technology, on the premise of ensuring the ideal layer, it has always been people's close attention to consider how to shorten the production cycle and improve resource utilization and nitriding efficiency. However, the method of sand blasting + ion pre-oxidation + ion nitriding can effectively reduce the waste of resources, speed up the speed of nitriding, and improve production efficiency at the same time. Therefore, it has a certain application prospect

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