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The article presents the effect of conventional heat treatment applied after overlaying welding with laser on properties of SSAB BORON B27 STEEL used in agriculture. In order to select the optimum parameters of laser processing and heat treatment for the best tribological properties of strength microhardness tests were carried out as well as observation of microstructures.
The research procedures connected with the comparative study of the innovative design of the grain hammer mill at the time of barley’s seeds crushing are presented in the study. For the purpose of the study’s performance, there has been developed and constructed a test stand where the grain hammer mill differing in design of the hammer assembly - of rotor, was tested. The studies were conducted on...
The article proposes an algorithm for detection of orientation of acorns during scarification process. This task is necessary for proper cut off of a part of acorn. Described algorithm uses Harris corner detector for location of acorn's remain of style. The performed tests have shown that proposed method is characterized by a sufficient sensitivity value as a unit of efficiency. Its specificity and...
Currently, in the commonly used pneumatic drills a control of grain movement in the seed line is not envisaged. The paper presents a method for correcting the uniformity of distribution of the grain material on the basis of an innovative device prototype designed and made at Poznan University of Technology. The main objective was to develop an improved manifold used to ensure uniformity of the grain...
Celem artykułu było przedstawienie i ocena stanu oraz perspektyw rozwoju rolnictwa ekologicznego w Polsce w porównaniu z sytuacją w Niemczech. Korzystano z danych wtórnych pochodzących z ogólnopolskich raportów polskich i niemieckich, które dotyczyły lat 2011-2014 oraz dostępnych fragmentarycznych danych z lat późniejszych.
Presently, great attention is paid to development of new types of suspension systems of farm tractors and mobile machines which have a decreased unit pressure on soil. Their traction properties must be taken into consideration when values of suspension systems parameters are determined. The coefficient of operation performance was assumed as a criterion defining this property. The article presents...
The amount of emitted harmful ingredients (CO2, NOx, HC, CO, PM) contained in agricultural farm tractor exhausts in the course of ploughing on the field which area is 26 ha, was determined by indirect method. The content of exhaust emitted in the course of direct soil cultivation and in the course of U-turning was expressed in relation to the time of work unit of the tractor (g·s-1) and also in relation...
W publikacji przedstawiono metodę i konstrukcję urządzenia do energooszczędnego przygotowania mieszanki pasz treściwych z jednoczesnym jej dozowaniem. Mieszanka paszowa powstaje w procesie przecinania się strumieni paszy objętościowej z cząstkami wysokoenergetycznymi. Określono racjonalne parametry tworzenia mieszanki paszowej.
A comparative analysis of milk production in Poland and Belarus has been completed. There have been analyzed the basic tendencies of modern development of the dairy industry and offered upcoming trends in innovative modernization of milk production processes. On the basis of the analysis of trends in world production of milk and new scientific knowledge about the biosynthesis of milk, there is provided...
During the operation of equipment for sterilization many technical factors occur which affect manufacturing process directly influencing finished product quality. Product evaluation of the finished product will enable to verify indirectly operation of a prototype construction of multifunctional sterilizer. The article is presented in a photographic documentation that allows to determine qualitatively...
The article presents the 6S methodology which may support functioning of enterprises and farms through facilitation of work organization and improvement of occupational safety and health. A definition was presented and implementation stages of the 6S methodology steps were described. Trends in adaptive changes which have to be carried out in order to adjust the 6S methodology to the requirements of...
The effect of using straw and the application of effective microorganisms on soil moisture and compaction in plowing tillage and direct sowing is presented. Data were collected during the spring growing season during the three-year monoculture of winter wheat. Soil moisture and compaction at four levels to a depth of 40 cm were measured. Plowing tillage in comparison to direct sowing resulted in a...
In the work the problem of the destructive impact of hand washing car on a lacquer coating, in the case of non-compliance of the principles of washing, was undertaken. This problem was investigated on sample of car body sheet with lacquer coating polluted by dust and road dirt. Two instruments of world-known producers were used for the measurements. The distributions of lacquer coating thickness were...
Cast irons are commonly used in case of many machine parts in different industry branches, also in agricultural industry. A lot of such machine parts are exposed to tribological wear and corrosion. Therefore, surface layers with improved properties are needed. This paper refers to two different ways of modification of the surface layer of nodular iron. The aim of this research was to compare the effects...
Most industrial waste in the form of sludge materials or dusts characterised by a high content of potassium, phosphorus, calcium or sulphur can, upon proper pretreatment, become complete fertilizers for agriculture, vegetable farming or forestry. The Department of Manufacturing Systems of AGH carried out research tests on the dry granulation of selected waste. The first group of materials included...
The article presents an initial assessment of the new regulatory system of a spray dose adjustment system for field sprayers. In contrast to traditional sprayers, the proposed solution incorporates triple interlocked with diversified liquid expense nozzles controlled based on the dose adjustment process utilizing the forward and angular velocities of the machine. The adjustment system was tested using...
This work presents the results of assessment of the quality of fruit jam before and after the modernization of the production line. Research was carried out at the factory of the fruits and vegetables processing. The modernization of the line included: installation of twin-screw pumps, exchange piston batcher on rotary batcher, assembly of the new stationary evaporator, inserting magnetic traps, the...
The paper presents the results of determination of the weighing indicators of the features group associated with ergonomics and work safety of agricultural machinery ES (ergonomics and safety) in rating their global quality. The research was carried out on farm tractor, considered as energy farm machine. The experts recognize ergonomics and safety as important (14%), but not the most important characteristics...
The paper presents directions for the development of basic structural materials used in agricultural machines. A review of major achievements in materials engineering in the development of novel structural materials and upgrading existing ones is presented.
This article shows the static analysis of rear suspension beam loading in a combine harvester manufactured by New Holland Bizon Sp. z o.o. The model of the examined machine with thresher rotor (Z110 model) was being manufactured until 2001, and further modifications of combine harvesters with the mentioned threshing system are being made so far [1]. The research conducted with the use of programs:...
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