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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 method of determination of grain speed in a seed pickling machine depending on the presence of scraper elements have been described in the paper. Results of high speed video analysis have been presented. Grain speed changes as a function of current frequency powering the seed pickling machine engine have been presented. The influence of scraper element inside the working chamber on thegrain flow...
The work presents results of study of the surface layers formed during the laser cladding process with powder mixture of Co-based alloy and B4C particles on S235 steel. The study included production of the surface layers by using laser device equipped with three-stream nozzle powder feeding system. The different feed rate and the same value of laser beam power have been used. The influence of powder...
W pracy przedstawiono wyniki badań mikrostruktury, składu chemicznego, grubości i twardości warstw powierzchniowych wytworzonych na stali bainitycznej podczas procesu napawania laserowego. Materiałem dodatkowym była mieszanina proszków stopu niklu i węglików wolframu w proporcji 50/50. Warstwy wytwarzano za pomocą urządzenia Laser Cell 3008 wyposażonego w laser dyskowy o mocy znamionowej 1000 W. Do...
This paper describes results of a repair process of crankshaft pulley hub made of low-carbon steel using laser cladding method. Widely used Co-based alloy powder (Stellite 6) was applied as cladding material. After laser cladding process crankshaft pulley hub has been subjected to grinding to nominal size. Non-destructive testing (dye penetrant inspection) as well as microscopic and chemical composition...
A comparative laboratory research on a special testing stand of casting materials erosive wear have been conducted in terms of assessing their tribological properties. Different types of carbon iron alloys have been used, as well as modified alloys (metallurgically) in order to increase their resistance to this type of wear. Results have been presented in the form of tables and graphs.
W artykule przedstawiono wyniki badań wpływu borowania dyfuzyjnego na trwałość narzędzi rolniczych eksploatowanych w glebie. Badania polowe trwałości narzędzi przeprowadzono w glebie III i IV klasy. Stopień zużycia narzędzi oceniono za pomocą skanera optycznego oraz metodą ubytku masowego. Warstwy borowane wytworzono metodą gazowo-kontaktową z tzw. otwartą retortą. Określono grubość ι twardość warstw...
The results of the influence of diffusion bonding on durability of the agricultural tools used in the soil were presented. Field tests of durability of the tools were conducted in the soil class Ii 1 and IV. The degree of wear of the tools using optical scanner and a method of mass loss were evaluated. The boronizing layers were made by the gas-contact method with the so-called open retort. Thickness...
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