Experimental Study of the Effects of a Constant and Variable Electric Fields on the Strength Properties of the Blade Steel Surface Layer

• Дата: 2019
• Автор: Nechaev, A.V.
• Формат: Стаття
• Мова: English
• Опубліковано: Інстиут проблем машинобудування ім. А.М. Підгорного НАН України 2019
• Назва видання: Проблеми машинобудування
• Теми: Power engineering
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/158811
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Experimental Study of the Effects of a Constant and Variable Electric Fields on the Strength Properties of the Blade Steel Surface Layer / A.V. Nechaev // Проблеми машинобудування. — 2019. — Т. 22, № 1. — С. 4-8. — Бібліогр.: 11 назв. — англ, рос.

The article presents the results of the experimental determination of the microhardness of the 15H11MF blade steel surface layer exposed to a constant or variable electric field. It is shown that its effect significantly reduces the microhardness of the blade steel surface layer. Since the strength of the surface layers of the working blades is one of the most important characteristics of their erosion resistance, the effect of the electric field of the steam flow volume charge can be one of the negative factors that reduce the erosion resistance of turbine blade surfaces. Based on the obtained results, it can be concluded that it is necessary to further improve the system for neutralizing the accumulation of electric charges in the flow path, which currently mainly performs the function of turbine rotor grounding.