Experimental determination of the wear resistance of devices used for cutting the stalks of agricultural plants

The paper presents researches on the wear resistance of the blades integrated in the combine cutter for the harvesting of agricultural plants. The wear of the combine cutters causes production losses at harvesting both during operation and stopping machines to change the blades. Experimental determination of wear was made for blades on cutting attachment of three types of combines studied. The parameters determined in the wear study were the hardness, mass and roughness of both the new blades and the blades used for 100 hours of harvest operation. The analysis of the data on the degree of wear of the blades both quantitatively by determining the mass and qualitatively by studying the roughness of the used surfaces under identical conditions of operation, presents differential losses for the three combines that correlate with the blade hardness