Increasing the performance and durability of cultivation sweeps with discreet wear-resistant coating

To increase the durability of soil-cutting parts in the soil conditions of Crimea, there have been proposed methods of their strengthening with wear-resistant materials according to bionically justified parameters. During operation, the blades acquire a wavy shape with protrusions and cavities, which helps to eliminate the "compaction cores" of the soil with abrasive particles, as a result of which the intensity of wear of the working surfaces of the cultivation sweeps decreases and their durability increases. To check the theoretical positions, there have been conducted comparative production tests of cultivation sweeps at LLC “Kachinsky +” (Sevastopol). The objects of testing were the sweeps of KPE-3,8 cultivators (on elastic tines) and KVN-3 (on rigid tines) with a grip width of 410 mm, which have factory coating with a solid alloy "sormite" of blades on the upper side and a toe on the lower side in the basic version, while the experimental version proposes discrete wear-resistant coating with powder wire blades on the upper side and nose on the lower part. The operating time of the KPE-3,8 cultivator was 50,4 hectares, which is 4,58 hectares per sweep, the operating time of the KVN-3 cultivator was 33,1 hectares (4,73 hectares per sweep). Analysis of the obtained results shows that the intensity of weight wear of cultivation sweeps with discrete wear-resistant coating is 1,2 times less, while linear wear is 2 times less than the intensity of wear of sweeps with coating with alloy "sormite", all other things being equal. The use of elastic sweeps for mounting tines reduces the intensity of their weight wear by 1,7 times, and the intensity of linear wear of sweeps with build-up alloy "sormite" and sweeps with discrete wear-resistant build-up by 2,5 times and 3,2 times, respectively. Thus, discrete wear-resistant coating of cultivation sweeps most effectively increases their durability during operation complete with elastic tines.