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Assessment of Tribological Properties of Single- and Double-Layer Pad Coatings Deposited onto Cultivator Points

Wójcik Wiesław, Barszcz Marcin, Dziedzic Krzysztof, Kuzioła Jarosław, Kowalik Przemysław

Advances in Science and Technology. Research Journal

2019

Vol. 13, no 3

120--128

This paper investigates properties of single- and double-layer pad coatings deposited on cultivator points. The coatings were deposited by manual metal arc welding (MMA) with ESAB OK. 84.58 coated electrodes using an inverter welder, DEDRA DESi201. Tribological properties were determined with a THT 1000 tribometer. A ball-on-disc friction pair was used. Experiments were performed in room temperature, with the sliding speed set equal to 0.3 m/s and two loads: 5 and 20 N. In addition, hardness was measured on the surface and in the cross section of samples by a Rockwell hardness test method (scale C). Surface roughness was measured before and after friction, and post-friction surface topography was examined under microscope. Impact strength tests of the coatings with single- and double layers of pads were performed. The tools and IT algorithms were used to collect and process the results of experimental research.