Material wear of cultivator shovels

The investigation comprises shovels quality and wear of one intercultivator at 225 ha of sugar beet and soybean tillage in 17 working days period. The cultivator accomplished working depth of 3,5 cm with variance coefficient 27,82 % at average working speed of 2,8 km/h with variance coefficient of 3 1,37 % on arable semigley shallow gley-noncalcareous and partially hydrorec lamated soil. The highest mass loss of 35,62 % and 42,71 % was measured at shovels marked 13 (material M3) and 25 (material M4) set (in the middle of the section) behind tractor pneumatic. The lowest mass loss of 16,36 % with shovel 22 (material M3) and highest of 30,53 % with shovel 28 (material M2 ) was achieved with work beyond the track of tractor pneumatic tyre. The lo west surface wear of 14,44 % was measured with shovels 22 (material M3) and the highest one of 45,78 % with shovels 4 (material M1) by soil tillage be yond the track of tractor pneumatic tyre. Shovels marked 25 (material M4) a nd 13 (material M3) set behind tractor tyres lost 23,18 % and 28,66 % of th e initial surface. Side set shovels (left and right) on the cultivator sect ion lost minimum mass of 5,42 % (material M3) and surface 4,18 % (material M4) whereas maximum mass loss amounted to 28,52 % (material M4) and surface 24,06 % (material M2).