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Purpose: The aim of the paper is to show the advantage of the application of the Rietveld refinement for determination of retained austenite amount in multiphase microstructure steels. Design/methodology/approach: The steels used for the investigation were thermomechanically rolled and controlled cooled to room temperature. The investigation of the microstructure was carried out using light microscopy...
Purpose: of this paper is the assessment of the strength of binding of selected bonding systems used for fixing prosthetic works. The characteristics of cement materials used for settling the crowns on the implant abutments were also included. The study has presented the evaluation of the binding strength of selected bonding systems used for fixed prosthetic works. Design/methodology/approach: Metal...
Purpose: This study deals with the effects of colemanite (Ca2B6O115H2O) on properties of slip-cast mullite–zirconia composites prepared via reaction–sintering of kaolinite, alumina and zircon powders. Design/methodology/approach: Colloidal processing (slip casting) is the route towards preparing these materials using 45 vol.% aqueous suspensions of a mixture of fine powders stabilized with polyacrylate...
Purpose: In this paper the Metal Matrix Composites of AL 7068 and TiC with different proportions of (2%, 4%, 6%, 8%, and 10%) by using stir casting process, mechanical properties and machining responses are investigating. Design/methodology/approach: The samples are fabricated using stir casting, machining of turning the samples by using Kilster Tool Lathe Dynamometer machining responses were identifying...
Purpose: The purpose of this paper is evaluation quality problems in the production company by using chosen quality management tools like Pareto-Lorenz diagram and control card. Design/methodology/approach: Researches were carried out by using traditional quality management tools. The paper concerns the analysis and research in the interdisciplinary field of production trends. Findings: The paper...
Purpose: The aim of this paper is design of modernization of control valves of finishing mill to control the counter-bending forces on the last stands by replacement of proportional valves with regulating ones. Design/methodology/approach: New board (construction, location and arrangement of valves) was designed, model of which was constructed by SolidWorks software. Findings: The solution was oriented...
Purpose: The friction stir welding (FSW) method is widely considered to be one of the most significant developments in joining technology to emerge in the last 30 years. The technique has originally been developed for joining difficult-to-fusion-weld Al-alloys, particularly for high strength grades and now widely used in various industrial applications, such as transport industries. On the other hand,...
Purpose: The aim of this paper is presents the study results concerning influence of carbon content on the surface layer condition, microstructure, microhardness and corrosion resistance of diffusion borochromized layer. Design/methodology/approach: In paper the three types of tool steel were analysed: CT90, 145Cr6 and 165CrV12. The borochromzing process was carried out in a powder mixture containing...
Purpose: of this paper was to develop and to characterize the mechanical behaviour of a structural composite obtained from a bio-based polyurethane matrix reinforced with fiberglass. Design/methodology/approach: Castor oil and Kraft lignin-containing polyol was applied for bio-based polyurethane synthesis. Structural composite was obtained by reinforcing this renewable source bio-based polymer with...
Purpose: Ladle to tundish melt transfer is paramount importance over the last three decades to controlling the cleanliness of high value steel. Tundish is an important buffer between ladle and mould where inclusion separation, flotation can be enhanced and exposed slag eye formation can be hindered by applying the knowledge of fluid dynamics as well heat transfer by changing the design of conventional...
Purpose: Laminated glass composite panel (LGCP) with at least one flexible plastic/ viscoelastic interlayer is considered. The purpose of this paper is to determine the material properties of the constituents of LGCP required for accurate modelling of the laminated glass structures. Design/methodology/approach: The proposed approach includes the following three type of tests: non-destructive tests...
Purpose: In this work our aim was to reveal the relationship between sodium alginate concentration and crosslinking level, also the ratio of release of the antibacterial additives: silver nanoparticles and metronidazole. Moreover, we examine obtained hydrogel as a potential dressing material for regenerative medicine. Design/methodology/approach: In the research specimens of hydrogels were tested...
Purpose: In this study, modeling of superplastic deformation characteristic for metallic alloys was investigated using GTN failure criteria in viscoplastic framework. Design/methodology/approach: The proposed model studied the simultaneous effects of cavitation and deformation parameter and considered the effects of strain hardening, static and dynamic recoveries, and hydrostatic stress. This cavity...
Purpose: Aluminium and its alloys are frequently used in structural applications due to their good welding ability as well as their high strength and corrosion resistance. Several developments have been observed on the welding of aluminium in last decade. The manufacturing of heat exchangers, economizers and boilers is highly cost progress due to tube to tube plate welding’s. The purpose of this study...
Purpose: Dual phase (DP) steels are widely used in the automotive industry due to their properties of a high balance of strength and formability. However, it is known that conventional welding of high strength steel leads to some undesirable results such as hardness decrease in the heat affected zone. Friction stir welding (FSW) is a new solid state joining method, which is used to join these steels...
Purpose: The composite coatings containing incorporated ceramic achieve a wide spectrum of enhanced properties, resulting from a combination of features from a ductile matrix and hard particles. This article attempts to explain how the alumina addition to Ni powder influences the microstructure and mechanical properties of the composite Ni-Al2O3 coatings cold sprayed on the 7075 Al alloy. Design/methodology/approach:...
Purpose: Abrasive water jet (AWJ) cutting uses mineral abrasive to cut practically all materials. In ice abrasive water jet (IAWJ) cutting, the ice particles are used as abrasive. IAWJ is under development with the aim to bridge the gap in productivity between the abrasive water jet (AWJ) and water jet (WJ) cutting. It is clean and environmentally friendlier in comparison with AWJ, while its cutting...
Purpose: The main idea of this paper is to introduce the refined model for selection of the Key performance indicators (KPI). The KPI selection model can be considered as a tool for analysis of the enterprise, which should be able to simplify the choice of the right metrics for the company, where study has been conducted. The Enterprise analysis model (EAM) will provide the information regarding weak...
Purpose: The purpose of this report is to present the similarities and differences between modified sine-Gordon models used in description of the curved Josephson junctions. The leading dynamical variable in this system is a gauge invariant phase difference of the macroscopic wave functions of the superconducting electrodes that form the junction. Findings: The main finding of this article is the...
Purpose: Purpose of this paper is to present results obtained during developing new cutting tools for individual tool industry. The aim of the research was to develop customized ball end milling tools with longer tool-life. Design/methodology/approach: to this study of development of new tools was over four successive sets of experiments, where the tool material, cutting edge preparation (cutting...
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