Selection of a material and a hardening method for the impact part of the hammers of the electrostatic precipitators shaking mechanism
DOI:
https://doi.org/10.31498/2225-6733.41.2020.226182Keywords:
удар, твердість, зміцнення, електрошлакове наплавлення, молоток, порошковий електродAbstract
The article presents data on the hardening of the hammers of the percussive mechanism of shaking the receiving and corona electrodes of electrostatic precipitators by electroslag surfacing. The review and analysis of publications in the field of gas purification made it possible to reveal the current trends towards an increase in the efficiency of impact impulse transmission of the electrostatic precipitator shaking mechanism by reducing energy consumption and maintaining a high efficiency of the impact impulse. Since the efficiency of the percussive mechanism for shaking the electrostatic precipitator is inversely related to the contact area of the striker and the waveguide, their plastic deformation during operation results in a decrease in the amplitude and an increase in the impact impulse duration, which negatively affects the operation of the shaking mechanism of the electrostatic precipitators. The quest for ensuring point contact in percussive mechanisms has been recognized as necessary. The analysis of the materials recommended for the manufacture of the impact part of the hammer has been carried out. An analysis of the hardness and chemical composition indicators of wear-resistant materials from low-carbon steel operating under shock conditions and possessing satisfactory weldability has been presented. It has been shown that the use of unalloyed steel requires the use of heat treatment and results in a deterioration in weldability as well. As far as economy is concerned the home produced electrodes for hardening the hammer are the most advisable as they do not contain expensive alloying elements. An analytically substantiated system for alloying the hammer of the percussive mechanism has been proposed with the aim of maximizing the efficiency of the electrostatic precipitator while increasing the operational reliability of the hammers and reducing their cost by electroslag surfacing with a powder electrode of the impact part on the shank
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Copyright (c) 2020 І.М. Білоник , М.М. Береговенко , Д.І. Білоник , О.Є. Капустян, А.Е. Смакограй , С.О. Шумикін
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