СREATION OF WEAR-RESISTANT LAYERS ON THE NARROW WALLS OF A CONTINUOUS CASTING MOLD WITH ALUMINUM AND CHROME-NICKEL GAS-THERMAL COATINGS
https://doi.org/10.17073/0368-0797-2016-7-443-448
Abstract
The heat- and wear-resistant layer was created by sputtering aluminum and chromium-nickel coatings to increase service life of continuous casting mold on its narrow sides from M1 copper before the last renovation. Previously, the authors have investigated the structure of the coatings, composition phases, hardness and microhardness of the surface layers. Chrome-nickel thermal spray coating with thickness of 0.5 – 0.6 mm was deposited on the surface of the pair of narrow walls of thick-walled mold. Machining by grinding is necessary to obtain the required cleanliness class of the walls surface, and it is required to increase the thickness of the chrome-nickel coating. When the chrome-nickel coating thickness is more, than 0.8 mm it can be detached. Therefore, to increase the adhesive strength of the chrome-nickel coating with a copper basis the use of aluminum underlayer is considered. As a result, the application of a chrome-nickel coating with aluminum layer can be used to increase the resistance of the narrow walls of a continuous casting mold if there is interaction of the porous layer with α-phase or the porosity reduction of the layer.
About the Authors
A. A. Gerasimova
National University of Science and Technology “MISIS” (MISIS), Moscow, Russia
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor, Academic Secretary of the Chair “Engineering of Technological Equipment”
A. G. Radyuk
National University of Science and Technology “MISIS” (MISIS), Moscow, Russia
Russian Federation
Russian Federation
Sci. (Eng.), Professor, Leading Researcher of the Chair “Technology and Equipment for Pipe Production”
A. E. Titlyanov
National University of Science and Technology “MISIS” (MISIS), Moscow, Russia
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Senior Researcher of the Chair “Technology and Equipment for Pipe Production”
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For citations:
Gerasimova A.A., Radyuk A.G., Titlyanov A.E. СREATION OF WEAR-RESISTANT LAYERS ON THE NARROW WALLS OF A CONTINUOUS CASTING MOLD WITH ALUMINUM AND CHROME-NICKEL GAS-THERMAL COATINGS. Izvestiya. Ferrous Metallurgy. 2016;59(7):443-448. (In Russ.) https://doi.org/10.17073/0368-0797-2016-7-443-448
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