Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2022

Идентификатор DOI: 10.32014/2518-170X_2022_5_455_176-187

Ключевые слова: arc discharge, beads, electrode, electroslag surfacing, filler material, hardening, slag bath

Аннотация: The main fuel of thermal power plants is pulverized coal. Grinding of coal is carried out by hammer crushers, the working bodies of which are beaters made of steel 110Г13Л. They fail prematurely mainly due to wear from impact-abrasive action. Increasing the service life of beaters is becoming an urgent task. The paper analyzes the methods of electroslag surfacing and equipment used to restore worn parts. The technological capabilities of the electroslag surfacing of the bits have been investigated. The technology of restoration and hardening of worn bits by automatic electroslag surfacing with wear-resistant carbon alloys has been developed. It is shown the expediency of conducting the process by non-consumable lamellar electrode with powder filler material feeding. The cladding material, resistant in the conditions of shock-abrasive wear, was chosen. To restore and harden the worn bits of coal grinding mills a special installation was developed that allows the slag bath to be applied by a non-consumable electrode, and the electroslag surfacing process by a fusing electrode. High durability of clad bits was noted. Electro-slag metal is characterized by extremely high density and homogeneity, absence of any defects of shrinkage and liquation origin. It is practically as good as the forged one and considerably exceeds the cast one. The expediency of conducting the process by a non-consumable plate electrode with the supply of powdery filler material is shown. © 2022, National Academy of Sciences of the Republic of Kazakhstan. All rights reserved.

Журнал: News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences

Выпуск журнала: Vol. 2022, Is. 5

Номера страниц: 176-187

ISSN журнала: 22245278

Издатель: National Academy of Sciences of the Republic of Kazakhstan

• Padar V. (Siberian Federal University, Krasnoyarsk, Russian Federation)
• Kuzembayev S. (Sh. Ualikhanov, Kokshetau State University, Kokshetau, Kazakhstan)
• Berezyuk V. (Siberian Federal University, Krasnoyarsk, Russian Federation)
• Sikhimbayev M. (Karaganda University of Kazpotrebsoyuz, Karaganda, Kazakhstan)
• Absadykov B. (A.B. Bekturov Institute of Chemical Sciences, Almaty, Kazakhstan)

• Scopus