Performance properties of anticorrosive lubricants in the process of maintenance during storage of combine harvesters

Abstract

The solution to the universal, global problems of energy and resource conservation in both the machine building and agricultural sectors is inextricably linked to the solution of the issues of protecting machinery from corrosion. Modern agricultural machinery, and self-propelled combine harvesters in particular, are operated periodically during one or two seasons a year. Most combine harvesters are stored in open areas of agricultural enterprises, and they are exposed to aggressive environmental influences (fluctuations in temperature, humidity, wind, solar radiation, dust, etc.). The main type of environmental impact on machinery is atmospheric corrosion and the corrosion wear of materials, parts and assemblies caused by it, which leads to premature failures. For example, the fatigue strength of steel products decreases by 28-58% when stored for 12 months in an open area. To provide temporary corrosion protection for combine harvesters, a large number of preservation and working-preservation lubricants are used. However, unresolved theoretical and practical issues lead to unreasonable use of protective agents that either do not provide the required storage time for the equipment or increase the cost of its preservation. Standardized test methods for anti-corrosion lubricants have a large number of drawbacks, the most important of which is that the evaluation of protective properties is carried out in units that do not allow to assess their validity period, but only show the amount of metal corrosion.