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Purpose: The aim of the presented researches is development and design of fluid bed mixed by hot gas. The fluid bed is designed to the chemical-heat treatment with thermo-active powders. This treatment is used for tools and mechanical parts. Design/methodology/approach: Contribution is focused on increasing of the cutting property of tools made from high speed steel by chemical-heat treatment. Precisely...
Purpose: This article is devoted to the development and mathematical modeling of the new technology of forging of blanks such as slabs and plates from ferrous and non-ferrous metals and alloys in a step dies with a wedge bumps and hollows, allowing for minor energy consumption to intensify shear deformation in both longitudinal and transverse directions. Design/methodology/approach: The combination...
Purpose:The experimental researches of this paper were carried out in order to investigate the characteristics of the oxide layers obtained on the internal and external surfaces of an austenitic stainless steel pipe. Design/methodology/approach: The surfaces of an austenitic stainless steel pipe were investigated by Scanning Electron Microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDX) and...
Purpose: This article is devoted to methods for predicting the results of surface modification of titanium alloys in glow discharge nitriding. With this advantage, it is given to the analytical criteria as the most appropriate for design automation of processes processing. Design/methodology/approach: The methodology is the position that the nitriding process is a combination of several competing...
Purpose: This paper presents a new method of nitrocarburizing in chemically active powders fluidized by mechanical vibrations. Design/methodology/approach: The research in the field of microstructure (light microscopy), hardness, wear resistance and impact strength was carried out on specimens made of X37CrMoV5-1 alloy tool steel subjected to nitrocarburizing at a temperature 560°C with thermo-chemical...
Purpose: The motivation of present investigation is the study of deformation-induced processes during in-situ tensile and compression test at elevated temperature in order to elucidate the role of the microstructure changes during creep testing. Design/methodology/approach: Experiments were conducted to investigate deformation-induced processes during in-situ tensile test at elevated temperature....
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