The research results of the spraying technical factors' impact on ground and air drift, and the deposit on the treetop in cherry orchards, are presented in the paper. Two different spraying systems (classical and sensory system) are...

In this paper, the results of microstructural analyses, including optical microscopy, scanning electron microscopy with energy dispersive spectroscopy and X-ray diffraction analysis, of the Ni-based self-fluxing alloys NiCrBSi, NiCrBSi–WC, and NiBSi–WC deposited on a previously quenched and tempered (QT) steel substrate 42CrMo4 by flame spraying with simultaneous fusing and plasma transferred arc (PTA) process are presented. The aforementioned microstructural analysis was carried out to determine the microstructural characteristics of the investigated coatings, especially at the coating/substrate interface, and the influences of the spraying and welding technology on the steel substrate. The analysis revealed a change in the microstructure of the coating/substrate interface. Specifically, the diffusion characteristics of certain chemical elements (carbon and iron) from the coating to the substrate and from the substrate to the coating were observed. Additionally, the analysis established the existence of new phases within the coating that arose as a result of the aforementioned diffusion and reaction with chemical elements from the coating. The diffusion of chemical elements was most pronounced in the area of the coating/substrate interface, while it decreased away from this area.

During operation, parts of agricultural machinery (working and structural parts) are exposed to severe corrosion. Corrosion processes are primarily caused by the working environment (high humidity and abrasive soils) and then by atmospheric conditions due to inadequate storage (garaging) of agricultural machinery during the off-season. The aim of the article is to analyze the causes of corrosion in selected agricultural machinery and to propose appropriate methods of corrosion protection and proper garage storage for agricultural machinery.

Modern agricultural production requires the use of agricultural machinery. Among all agricultural machines, the tractor is one of the most frequently used agricultural machines. In this paper, we perform a literature review and explore various safety hazards a tractor operator is exposed to. Next, we present the results of a work safety related survey we conducted in Osijek-Baranja and Vukovar-Srijem counties. We conclude the paper with a list of safety related observations we derived from our research.