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The aim of this work was preparation of the model magnetorheological (MR) fluids. Basic properties of prepared MR fluids, as their response to an external magnetic field and their stability, were investigated. Moreover (furthermore) few results concerning stabilizing effect of various additives are presented. Design/methodology/approach: Model MR fluid was prepared using three type of carriers: silicone...
Purpose: The aim of the work is presents the influence of casting method and anodic treatment parameters on properties of an anodic layer formed on aluminum casting alloys. Design/methodology/approach: Investigations were carried out on the laser profile measurement gauge MicroProf from company FRT on two casting aluminum alloys which both were founding by pressure die casting and gravity casting...
Purpose of this paper is to extend a complex evaluation of magnesium alloys which requires very often knowledge of structure and mechanical properties. These properties are connected with microstructure that is influenced by metallurgical and technological factors and conditions of exploitation. Presented knowledge expresses very important information for design and exploitation of these alloys. Design/methodology/approach:...
Purpose: A study on the hot deformation behaviour and dynamic structural processes (dynamic precipitation operating during deformation at elevated temperatures) of nickel based superalloy was presented. Design/methodology/approach: Compression tests were carried out on precipitations hardenable nickel based superalloy of Inconel 718 at constant true strain rates of 10-4, 4x10-4s-1 within a temperature...
Purpose: The determination of the temperature distribution in the wet cylinder sleeve in initial phase of the work of turbo Diesel engine. Design/methodology/approach: The results of calculations of the temperature distribution in the wet cylinder sleeve of the turbo Diesel engine were received by means of the two - zone combustion model and the finite element method. Findings: The computations presented...
Purpose: The paper addresses the problem of determining the influence of an increased nitrogen content in the range 0.03-0.09% on the structure and selected functional properties of melts made of X155CrMoV12-1 and X40CrMoV5-1 tool steels and HS6-5-2 high-speed steel. Design/methodology/approach: The tests consisted of an assessment of structure and determination of selected characteristics of as-annealed,...
Purpose: In magnesium alloy sheet products have been attracting more and more attention in recent years because of their application potentials as coverings of portable electrical devices and automotive panels. Thus this paper focus on the deep drawing process of magnesium alloy sheet. Design/methodology/approach: The FEM soft ware DEFORM-3D is used to investigate the mateial flow character during...
Purpose: Substance of the investigated issue is analysis of the obtained medium grain size, mechanical properties and formability of the alloy AlCu1Mn by the process of multiple severe plastic deformation. Design/methodology/approach: Comparison of results obtained by pressing through the classical channel geometry and through the channel with modified geometry. Findings: This alloy is used for manufacture...
Purpose: of this paper is to present virtual strength machine from material science virtual laboratory, which can be used for laboratory staff or students training. Material Science Virtual Laboratory, is an open scientific, simulating and didactic medium helpful in the realization of the didactic and educational tasks from the field of material engineering in Institute of Engineering Materials and...
Purpose: The purpose of this research paper is focused on the surface roughness variation in high speed fine turning of the austenitic stainless steel. Design/methodology/approach: A series of experimental tests have been done to evaluate the possibility of high speed fine turning of the austenitic stainless steel from the surface roughness variation and machining stability. Findings: It was found...
Purpose: The aim of this paper was the optimization of wire drawing process parameters. Design/methodology/approach: The hard binding material determined according to American standard ANSI/AWSA 5.8-92 as High-temp 095 was chosen to the analysis of wire drawing process. It is hard solder with high fluidity properties. Findings: Wires, bars and strips are the most often use forms of this solder on...
Purpose: Electro discharge machining (EDM) is one of the most effective non-conventional machining methods. This method is the best condidate in machining of ceramics and carbide materials. Design/methodology/approach: The complexity and non-linear nature of EDM from one side, and occurrence of instability phenomenon due to the different input setting up parameters especially in machining of carbon-based...
Purpose: The aim of this paper is showing the EFQM Excellence Model approach. In this paper it was introduced the usage of the EFQM Excellence Model not only in the whole organization but also in the selected processes in the company. Design/methodology/approach: In the frames of own research it has been assessed the selected production process according to the criteria of the EFQM Excellence Model...
Purpose: Influence of binder composition on some selected properties of feedstock contained powder of M2 with 10% of carbides powders are demonstrated in the paper. Design/methodology/approach: Torque-load test, rheological tests. Findings: Examination of the effect of the binder type and portion on structure and properties of the experimental tool materials with the cermets structure revealed that...
Purpose: The paper presents the influence of alloying with NbC powder by the use of a high-power diode laser and TiAlN, AlSiCrN and TiCN gradient coatings deposition by PVD process on microstructure and hardness of the X40CrMoV5-1 steel surface layer. Design/methodology/approach: Microstructure was characterised using optical metallography, scanning and transmission electron microscopy. Findings:...
Purpose: The main subject of this paper is the computer simulation with the use of finite element method for determining the internal stresses in coatings Ti+TiN obtained in the magnetron PVD process on the sintered high-speed steel of the ASP 30 in different temperatures of 460, 500 and 540 ° C. Design/methodology/approach: Computer simulation of stresses was carried out with the help of finite element...
Purpose: Facing with the practical limitation in lowering diffusible hydrogen content, the possible modification of weld microstructure would alleviate the flux cored arc (FACW) weld deposits from the risk of weld metal cold cracking. Therefore, it was aimed to identify and evaluate the effect of weld microstructure on cold cracking susceptibility of FCAW weld metals, and then to give a basic guideline...
Purpose: The main purpose of this work was to work out the technology of manufacturing carbon and titanium based layers on the surfaces of sintered carbides machining edges used in furniture industry. Design/methodology/approach: A hybrid deposition system employing DC magnetron sputtering and radio frequency plasma assisted chemical vapour deposition (RF PACVD) in one reaction chamber was used to...
Purpose: of this paper. The aim of this paper is to present a prototype of web-based programming interface for the Mitsubishi Movemaster RV-M1 robot. Design/methodology/approach: In the previous papers [11-14] the off-line, remote programming system for the mentioned robot has been presented. It has been used as a base for developing a new branch: web-based programming interface. The web techniques...
Purpose: The aim of the work was to determine the surfaces as well as physicochemical properties changes of the metallic urological stent. The tested stent was made of Co-Cr-Ni-Fe-Mo-Mn alloy and was implanted during four years. Design/methodology/approach: Electrochemical tests have been used for corrosion resistance investigations. They were carried out in the artificial urine solution at the temperature...
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