The analysis of various materials used for high-strength wear-resistant coatings of ploughshares shows the best method of parts hardening. It is necessary to take into account the maximum possible thickness of the hardened layer, penetration and adhesion of the hard alloy to the base metal, performance and the criterion "price — quality". The best properties of those produced by the domestic metallurgical industry have steel 30HGSA. Reinforcing Russian materials in the form of carbide powders, electrodes, wires of production generally correspond in hardness and wear resistance to foreign analogues, however, it is necessary to take into account the strength of adhesion of the guide to the base metal, adhesive properties, chipping and delamination of fragments of the reinforcing layer under shock loads. The design of the new plowshare adopted, consisting of the core and the overhead retractable bit. The material of the plowshare and chisel core is steel 30HGSA. The reinforcing material is ФБХ-6-2 with 35 % Wolfram carbide, the hardening method is plasma surfacing with a thickness of 0.5 to 4.5 mm. The results of fi eld tests showed the advantage of experienced plowshares with a chisel overlap in resource by 2.5–4 times, in strength by 3–5 times compared with serial ploughshares.

Developed and implemented by private companies innovative techniques to improve the resource and efficiency of machines and equipment requires scientific confirmation. For this purpose, tribological studies are carried out when entering into lubricating oils known antifriction, anti-wear mineral tribotechnical composi-tions, create and test their own, investigate the tribotechnical efficiency of the electric effect on the oil. Thus, in laboratory tests with DC voltage up to 50 V for copper, aluminum, zinc, tin, steel, coal electrodes washed with oil, a significant decrease in friction and wear is confi rmed. In the operation of vehicles confi rmed that the voltage is applied even to the steel parts in oil of the internal combustion engine and transmission assemblies provides fuel economy under different condi-tions from 10 to 18, average 12 %. The same tribotechnical treatment for hy-draulic equipment is proposed.

Failures of the same elements of the machines occur after different operating time, which is reflected in a significant dispersion of the resources of the elements and machines in general. Failures make it necessary to send the machines or their units to overhaul or decommission, some failures can be eliminated during operation. Control of the moment of occurrence of failure is the key moment in the process of operation of machines. In order to timely prevent the failure of an element / part / node of the machine, it is advisable to assess the values of the monitored resource parameter characterizing this element / part / node. The nominal value of the monitored parameter is a kind of starting point, and the limiting one will characterize the failure

The Article is devoted to the description of the comparative results of two systems tolerances-D1 and D (i). D1 is the system of tolerances, using one admission, standing for the entire service life of the machine. (D) (i) is the system of tolerances, using one too. Only the tolerance, not permanent and variable, depending on the speed of wear parts, guiding parts of the same group (GOD). It is known that in this GOD there is a distribution of those details according to the speed of wear. First, fail parts with a high wear rate. They were the first to reach the limit value setting, forming a denial. They are the details, having an average speed of wear, and the details at the bottom of the list, with the smallest rate of wear. Thus, the sequence of failure depends on the details of its actual speed of wear, i.e. first come out of the standing parts, wear with great speed. It was under this characteristic of wear parts and designed alternating the admission, changing its value depending on developments, the fewer hours of details, the lower the tolerance, the earlier it is necessary to replace this part. A method and a computer program that implements this tolerance.

The possibility of introduction and development of aviation engineering of agricultural purpose, for the purpose of increase in efficiency of functioning of the industry as a result of increase in efficiency of the spraying equipment in use and also qualities of control of processing of sowing cultures in the course of growth on fi elds of agro-industrial complex is considered in article.

In article the essence and the maintenance of the salary as economic category, one of the main directions of increase in profitability of work of employees of agricultural branch in modern economic conditions is considered. The economic analysis and assessment of realization of her main functions in the organization of compensation of hired employees of the organizations are given, a number of the directions of their development for the purpose of strengthening of motivation of workers in results of the work is offered.