Встановлення раціональних режимів взаємодії газового струменя та електричного розряду для розробки методу легування газоподібним нітрогеном при використанні електричної активації

Abstract

Today, the metallurgical industry, as the main producer of structural material, sets new, increased requirements for the operational qualities of steels, which determine the reliability and durability of parts and structures. The methods of improving the properties of steels are quite diverse, but an important place among them is alloying, including nitrogen. The nitrogen alloying allows to reduce the content of more valuable elements in alloys while maintaining the necessary strong structure and high corrosion characteristics of alloys, plasticity, etc. Nitrogen is a fairly widespread chemical element and has long been known as an alloying agent, but its limited solubility in iron alloys, especially with a high content of other components, prevents its widespread use. Different methods of gas activation are used to increase the solubility of nitrogen. The authors investigated the option of activation by creating an electric discharge on a physical stand. The area of the lance at the outlet for the supply of purging gas was subject to modeling, on the path of which a gas activation device was placed by creating an electric discharge between the electrodes. It was established that to ensure electrical activation of a nitrogen-containing gas jet, it is possible to create an electric arc or corona discharge, the type of which depends on the distance between the electrodes. In order to ensure the effective interaction of the gas flow with the electric discharge, it is necessary to ensure the gas pressure at the level of 0.8-1.2 atm, and to place the blowing device at a height above the electric discharge at the level of 20-40 gauges. Compliance with the specified parameters will ensure effective interaction of the gas jet with the electric discharge in the form of an electric arc or corona discharge.