Mechanical Characteristics and Wear Resistance of the Cladding Layers Obtained by Melting of Cored Wires with Simultaneous Vibration of Substrate
Author:
Student Mykhailo1, Vojtovych Andriy2, Pokhmurska Hanna2, Maruschak Olena3, Student Oleksandra1, Maruschak Pavlo4
Affiliation:
1. Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine , 79060 Lviv , Ukraine 2. Department of Welding Manufacture, Diagnostics and Restoration of Metal Structures , Lviv Polytechnic National University , 79000 , Lviv , Ukraine 3. Ivano-Frankivsk National Technical University of Oil and Gas , Ivano-Frankivsk , Ukraine 4. Department of Industrial Automation , Ternopil National Ivan Pul’uj Technical University , Rus’ka str. 56, 46001 , Ternopil , Ukraine
Abstract
Abstract
A wear proof layer was obtained by applying vibration with a frequency of 100 Hz and amplitude of 0; 70; 300 μm to the cored wire of Fe-Cr-B-C doping system during welding. It was shown that horizontal vibration affects the grinding process of boride inclusions: their average diameter reduces from 175 to 5 μm, and the amount of (FeCr)2B plastic phases increases during the redistribution of phases. Wear resistance of the metal, which was deposited using horizontal vibration with an amplitude of 300 μm, increases by 2.3-2.5 times due to wear with the fixed and unfixed abrasive material, and by 2.8 times due to wear under impact loads. For restoration and strengthening of large-size parts, it is proposed to add Al-Mg powder (Al = 47 - 53 %, Mg = 53-47% wt. %) to the CW charge to increase wear resistance of the deposited metal of the Fe-Cr-B-C system. This contributes to the dispersion of the boride inclusions, the average diameter of which decreases from 70 to 5 μm. In the structure of the deposited metal of the Fe-Cr-B-C system, inclusions of the complex alloyed nitrides are extricated with an average size less than 1.0 μm. As a result, the average value of microhardness increases from 700 to 900 HV. Wear resistance of the deposited metal increases by 1.5 times due to wear with the fixed and unfixed abrasive material, and by 2.0 times due to wear under impact loads.
Publisher
Walter de Gruyter GmbH
Subject
Mechanical Engineering
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