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Vol.15, No.3, 2015, pp.173–180 |
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SELECTING HARDFACING TECHNOLOGIES FOR VENTILATION MILL SUCTION PLATES AND EXTENDING ITS WORKING LIFE Marko Ristić1, Radica Prokić-Cvetković2, Boris Katavić1, Ivana Vasović1 1)GOŠA Institute, Belgrade, Serbia, marko.ristic@insitutgosa.rs 2)University of Belgrade, Faculty of Mechanical Engineering, Belgrade, Serbia |
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Abstract This paper presents results of the suction plate surface modification by hardfacing, of the ventilation mill in the Kostolac B power plant. Before applying hardfaced suction plates to exploitation conditions, it is necessary to study model hardfaced samples for determining the optimal technology and filler material for revitalization. Experimental tests of revitalized mill suction plates in real exploitation conditions show that the proposed modification, hardfacing technologies and filler materials give good results. The relative weight loss of the suction plates after 1440 h period of exploitation in real conditions is 1-3%. The application of this approach can reduce the number of possible repairs and extends the period between them, resulting in significant economic effects. Keywords: ventilation mill, coatings, wear, suction plate, hardfacing |
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full article (5822 KB)
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