Technological aspects of increasing the wear resistance of the working surface of the dump with a modified surface

Abstract

One of the most common tools used for plowing is the moldboard, which is a curved steel plate at an angle to the furrow wall. So the plow blades work under conditions of abrasive wear and significant static and dynamic loads, while the soil is an aggressive environment, which creates conditions for corrosion damage, so the plow blade as a tillage tool must meet the requirements for wear resistance, corrosion resistance, have high strength characteristics and ensure the preservation shape and size during operation. To improve the operational characteristics and service life of dumps at a low cost, there are various approaches, the general principle of which is based on obtaining layered or matrix-type coatings on the working surface of the dump by various metallization methods. Thus, the creation of a coating of a material with a shape memory effect on the surface of the plow blade will increase the durability and, as a result, the service life. In this case, adhesion is ensured by applying a coating with a gradient in composition along the thickness, changing from the surface of the substrate to the functional wear-resistant layer NiAl/FeMnNiAl from 99/1 to 1/99 with a thickness of 0.2 mm, and the functional wear-resistant layer FeMnNiAl is a material with thermoelastic phase transformation, providing high resistance to abrasive type of wear I=11.4×10-6 g/m3 (with wear rate for steel U10 I=23.3×10-6 g/m3) and corrosion.