Current demands on quality are the engine of searching for new progressive materials which should ensure enough durability in real conditions. Due to their mechanical properties, however, they cannot be applied conventional machining methods. In respect productivity, one methods is finding such technologies allow achieving an acceptable lifetime cutting tools with a machined surface. One mentioned trochoidal milling. Based our previous research, where effect changing conditions (cutting...

Experimental studies of the wheel rim workpieces with additional technological corrugations have been carried out results which showed ineffectiveness this technique in profiling to increase thickness radial profile junctions semi-finished product. The comparison methods was according Cochran's criterion and Student t-test. experiments aimed at determination flexural strain on differently shaped confirmed impossibility creation upthrust meridional direction during deformation closed shells...

Austenitic stainless steel belongs to the best oxidation-resistant alloys, which must function effectively and reliably when used in a corrosion environment. Their attractive combination of properties ensures their stable position industry. They belong group difficult-to-cut materials, abrasive water jet cutting technology is often for processing. Samples made AISI 304 has been as experimental material. Data generated during experiments were study effects AWJ process parameters...

Microhardness is a basic controlled quality parameter according to functional coatings, which linked with number of physico-chemical properties, such as coating strength, abrasion resistance, resistance deformation, life. Life the from diagnostic point view influenced by chemical, physical, technological and material conditions process creating film. The paper deals analysis microhardness created anodic oxidation aluminum direct link chemical physical factors Design Experiments methodology...

The current practice in the field of anodic oxidation aluminium and its alloys is based mainly on a set partial empirical experiences technologists obtained during surface treatment. aim presented paper deeper more complex identification influence chemical technological factors acting process especially thickness formed layer by electrolysis method sulfuric acid solution. density was selected as basic criterion for verification evaluation analysis experimentally data, accordance with...

The mechanical properties of die castings correlate with the inner structure a casting, distribution eutectic phases, and content porous cavities in casting volume. This submitted paper deals issue possibility to influence basic parameters affecting quality through structural modifications gating system. parameter under assessment is gate height. In case diverse height gate, five sets were produced. individual subjected examination selected properties, i.e., permanent deformation surface...

The effects of six factors, affecting during the acid zinc plating process as its technological conditions, on thickness resulting coating has been examined. In order to control quality deposited surface alloy EN 355 at a constant current density 5 [Adm -2 ], mathematical model predicting was developed using Design Experiments (DoE) method. obtained describes layer in dependence factor-level changes and combinations with reliability 58.75%.

The contribution examines the effects of electrolyte chemical composition on resulting AAO layer thickness, which is one main indicators corrosion protection aluminium parts and also favourably affects mechanical properties component surfaces. For comparison purposes, there were selected electrolytes comprising sulphuric acid, oxalic boric acid sodium chloride. Anodizing time for all specimens was 210.00 minutes. At same time, equal temperature 22.00°C ± 13.64% as well magnitude applied...

This paper shows an influence of chemical composition used electrolyte, such as amount sulphuric acid in aluminium cations electrolyte and oxalic operating parameters process anodic oxidation the temperature anodizing time, voltage applied during process. The those on resulting thickness oxide layer. impact these variables is shown by using central composite design experiment for six factors (amount acid, cations, temperature, voltage) usage cubic neural unit with Levenberg-Marquardt...

The paper investigates the influence of chemical composition and temperature electrolyte, oxidation time, voltage, current density on Vickers microhardness aluminium oxide layers, at same time. layers were generated in electrolytes with different concentrations sulphuric oxalic acids surface densities 1 A·dm −2 , 3 5 . electrolyte varied from −1.78°C to 45.78°C. results have showed that while increasing increase layer values is approximately by 66%. While simultaneously molar concentration H...

The macroscopic structure of a casting has direct impact on its mechanical properties. porosity and homogeneity closely correlate with tear strength characteristics. In order to achieve the best properties, it is necessary eliminate internal defects in casting. elimination such can be achieved through suitable adjustment input parameters high pressure die machines prior starting actual cycle. This method useful for companies that produce castings basis supplied forms, whereby impossible...

Abstract The mechanical properties of technical materials depend on their structure. They are influenced not only by chemical composition, but particularly the structural grain size. Significant changes in behaviour related both to surface and volume properties, field parameters. A wide range physical parameters as well. Nano‐materials materials, size which is dimensional area from 10 −9 −7 m. Nano‐particles nanostructures thus so small that affected atomic forces, bonding, quantum...

In order to improve the corrosion resistance of material EN 355 thickness zinc coating, deposited during acid plating process at a constant current density 1 A·dm -2 , was monitored. The coating has been investigated as relationship physical and chemical factors acting galvanic plating, i.e. electrolyte temperature, composition (the amount zinc, chloride boric in electrolyte), time size voltage. Based on mathematical-statistical analysis obtained data suitable predicting model developed for...

The paper deals with statistical methods application to the evaluation of relationships between investigation range input factors and response in longitudinal turning process. Our research was aimed at creation model real situations cutting conditions effects on machined surface morphology applying steel C45 specific values. Design experiments (DoE) have increasingly had a wider when mathematical models technological processes. So main part is demonstrate procedure processing experimentally...

All components of a huge machine tool need to work together perfectly ensure not only quality finished product, but operator safety. One those many is the material support panels and moving parts in construction. Mechanical structure machine, most cases does reach technical level regulatory techniques or electric drives potential increase dynamics, speed accuracy machines remain unused. Used classic construction materials, steel light alloy then zoom limit their physical capabilities....

Cohesion of the soils is one most important parameters which soil evaluated in terms its suitability for building foundations. Safety construction fact dependent on strength soil, respectively shear strength. Fine-grained represents very specific group, distinguished an effective and total cohesion soils. The water thus drastically affects contrary to gravel sandy publication compares tabular values define influence water, grain size consistency her behaviour.

The paper deals with the automation of hydroabrasive production process, which leads to higher productivity and optimization. In submitted work, basis control design is a topography function surface roughness abrasive waterjet cut walls, its functional relations controlled speed measured mean values sound pressure level, including suitable diagram connections controlling elements equipment. parameter final wall; in design, program-regulated according continuously root square level by means...

The automation of hydro-erosion manufacturing processes comes to increase the demands on engineering works in preparation production, at shortening deadlines for implementation scientific knowledge into practice, design production and economization processes. This process is associated with extensive utilisation mathematical methods, using computational procedures specific tasks methodology mathematics methods formulating solutions. During solving problem, there mostly used: operational...