ENSURING THE EQUISTABILITY OF THE TILLAGE TOOLS WEAROUT

Abstract

The paper considers the elaborated measures, aimed at ensuring the equistability of the wearout and reaching the effect of selforganization of the cutting elements of the reinforced V-shaped sweeps that leads to the reduction of the tractive resistance and decrease of the fuel consumption by the mobile energy facility.

Soil environment, where V-shaped sweeps function, influence greatly the regularities of the wearout and formation. Wearout of the tillage tools occurs unevenly, that leads to their premature rejection. Solution of the problem of ensuring higher durability to abrasive wear is achieved due to the application of the reinforcing technologies. All the available methods of reinforcements are suggested for the specific operation conditions and do not take into consideration possible change of the conditions and operation models.

For achieving the equistability of wearing- out it is necessary that the wear resistance of the tillage tools surfaces was proportional to the intensity of the abrasive wear in all the local zones. Uniform wearing-out of all the friction surfaces must provide long saving of the initial form and provide the effect of self-sharpening of the tillage tools.

Determination of the character and peculiarities of the wearing process of the serial V-shaped sweeps was carried- out at three types of soils, using the cultivator «John Deere 2210»). For study serial V-shaped sweeps, made of the steel 28MnB5 and steel 65Г were used. As a result of the studies, carried out wear distribution line was established, on its base measures, aimed at ensuring wearing- out the equistability and achieving self-sharpening were determined. Reinforcement of the V-shaped sweeps was performed by means of the electrodes T-620, Т-590 and M-Fe 6 according to the elaborated schemes.

As a result of the application of the suggested measures increase of the wearing-out equistability on sandy loam soils is observed within the limits of 6…9%, on clay loam soils – 42…49%, on light clay – 25…36%. Self organization of the cutting elements of the reinforced V-shaped sweeps results in the decrease of the tractive resistance and fuel consumption by the mobile energy facility on average by 11%. Application of the reinforcing technologies enables to increase wearing-out equistability of the V-shaped sweeps of the cultivators by 9…49%.