The effectiveness of farming relies heavily on the condition of machinery and equipment, as well as maintaining the ideal soil conditions for the desired yields. Soil cultivation tools endure substantial stress and wear, emphasizing the need to study their durability surrounding soil contact. Our research focuses on enhancing the lifespan of worn-out ploughshares through various heat treatment methods and hot metal spraying. By remelting the surface of ploughshares using a flame or laser, we aim to identify the most effective treatment for agricultural production. The improved surface treatment of the furrows in field tillers can significantly cut costs and enhance tillage efficiency. Our preliminary findings suggest that the metal spraying and remelting of nickel alloy hold promise for achieving these goals.

The efficiency of agricultural activity is significantly influenced by the condition of power machines used in the agricultural production. Among others, the formation and maintenance of suitable soil-conditions play a very important role in obtaining the desired harvest yield. Many types of wear have been recognized such as abrasive, erosive, corrosion, oxidation etc. The abrasive wear in agriculture equipments is the most common problem. The tillage elements are exposed to an extraordinary high load and a significant wear, therefore it is necessary to investigate the relationship between their active layer and durability. Abrasive wear is probably the most significant cause of mechanical damage of equipment components coming in contact with abrasive bodies. The purpose of our research work is to change the old, worn cultivator tines to tines having a longer durability; hot metal powder spray fusing has been used in order to realize our aim. The products made by us will be used in the agricultural production in the future therefore the type of layer build-up technology to be used during the production can be determined. As a cultivator is equipped with a lot of cultivator tines, the expenses can significantly be decreased by the use of cultivator tines made by a well-chosen layer build-up technology and a higher yield/agricultural area can be obtained during the cultivation.

A jármű üzemanyag fogyasztását jelentős mértékben befolyásolják a különböző veszteségek, ilyenek a gépjárműben keletkező veszteség (pl. csapágy veszteségek, a hajtásban, hajtóműben keletkező veszteségek stb.), a légellenállás vagy a gumiabroncsok gördülési ellenállása. Fontos tény, hogy üzemanyag-megtakarítást csak az üzem közben létrejövő veszteségek csökkentésével lehet elérni. Kutatómunkánk célkitűzése, hogy definiáljuk a járművekben fellépő veszteségeket és azok meghatározási módszereit. A későbbiekben az így meghatározott értékek bemenő adatként fognak szolgálni járműenergetikai számítások modellezésénél.

Belt-in-Oil (BIO) timing belts operate under repeated tooth engagement, cyclic deformation, elevated temperatures, and continuous contact with engine oil. This study comparatively evaluated the surface degradation and tooth-profile geometry of BIO and dry-running timing belts used under real operating conditions. Two BIO belts (S1: 80,000 km; S2: 120,000 km) and one dry-running belt (S3: 80,000 km) were analysed using 2D and 3D digital optical microscopy. Sample S1 showed localised material loss and exposure of fibrous structural elements, mainly near the tooth grooves and roots. More extensive delamination-like damage was observed on S2, whereas S3 exhibited localised crack-like surface damage. Mean profile depths measured at six circumferential locations were 2.477 ± 0.439 mm for S1 and 2.178 ± 0.272 mm for S3, corresponding to mean relative deviations of −23.8% and −37.8%, respectively, from the catalogue reference geometries. The results indicate that local surface degradation and tooth-profile geometric deviation represent distinct condition characteristics. Because the belts originated from different engine designs and material systems, the independent effects of oil exposure and mileage cannot be isolated.

Die forging is a widely used production method for manufacturing high-strength components with high accuracy and good mechanical properties. Since the die forging process involves many complicated thermo-mechanical coupled field physical problems, such as large plastic deformation, high temperature, friction, and heat transfer, etc., experimental studies are difficult and expensive to perform. The numerical simulation method has become the main method of study and optimal design for the die forging process. This paper reviews the published papers on numerical simulation of the die forging process from 2016 to 2026, in a structured literature review of computational simulations dealing with die forging processes. The literature search was conducted using the Scopus and Web of Science databases. After screening and full-text assessment, 24 relevant journal articles were selected for this paper. The articles studied were analyzed in terms of finite element modelling strategies, constitutive and material models used, friction and thermal boundary conditions considered, and process parameters. Typical results obtained from the studies discussed in the paper include stress, strain, temperature, forging load, and metal flow. The current state-of-the-art research has evolved from simple metal-flow predictions to more complex thermo-mechanical models, and even optimization-based models. Most of the current studies are based on experimentally derived constitutive equations, as well as more complex friction and heat-transfer models. Furthermore, studies applying optimization methods (Taguchi methods, design of experiments, machine learning, artificial intelligence) are increasingly common. The growing interest in the digital twin concept and real-time process control is observed. However, experimental validation, thermal contact modelling, and simulation of stress, strain, temperature, and microstructure in one simulation remain key challenges.