STUDY OF THE WEAR OF THE WORKING ELEMENTS OF THE DEEP CULTIVATOR USED IN HIGHLY ABRASIVE SOILS

Abstract

A study of the wear of the working parts (chisels and boom shares) of the Kverneland CLC 300 deep thresher was conducted in the Šalčininkai district, Jašiūnai municipality, on sandy soils in 2022 August. The arrow shares lose on average 21.2% of their mass and shorten by 27.0 mm before the critical condition, while chisels lose on average about 15.5% of their mass, i.e. only 30% of the failure resource. Wear of steel chisels is proportional to hardness (the harder the chisel, the less wear), while wear of chisels is inversely proportional to hardness (harder chisels wear more). No differences were found in the wear of boom shares renewed with Hardox 450 and 500 fragments. The study revealed a very large non-uniformity of wear of boom shares - wear is influenced by the position of the part in the harrow (due to different soil compaction of the drive wheels, due to partial loosening of the soil by the working parts of the first row of the implement, etc.).