At present, due to advanced fatigue calculation models, it is becoming more crucial to find a reliable source for design S–N curves, especially in the case of new 3D-printed materials. Such obtained steel components are becoming very popular and are often used for important pa...

The presented publication is focused on increasing the productivity and efficiency of machine production of precision holes. Considerable attention was paid to the influence of the pre-preparation and drilling technology on the quality of the reamed hole. The material selected for machining&...

High-performance electronic parts are vital features in almost all modern motorized machines. These silicon components are significantly minimised, especially in transportation branch. Concentration of performance requires perfect cooling conditions. A fluid flow cooling by an active cooling circuit with&#...

This article deals with the injection moulding into the plastic mould. This is an unconventional approach to injection moulding, especially because the 3D printing is used to produce the mould. The mould with the same shape was made of a conventional material (aluminium) for c...

The article deals with issues which occur when using different types of basic print speeds in metal additive manufacturing. It describes their importance, mutual relationships and their influence on the quality of pieces manufactured using this technology. The ability to manage the spee...

This paper is focused on the complex evaluation of the prosthetic socket (of a hand) manufactured by the usage of additive technologies. Main advantage of this method is a significantly shorter production time and lower production cost. The durability of the socket is generally...

The present paper brings an insight to face the machining of hard coatings (Stellite 6) prepared by thermal spraying technology. The objective of the paper is to evaluate the influences of machining parameters on the surface of Stellite 6 deposited on steel substrate by the&#x...

This paper deals with the analysis of a suitable compensation topology of a wireless power transmission system for powering the rotating parts of modern automatic machine tools. It summarizes the important properties of the serio-parallel compensation topology suitable for this application a...

It is well known that incomplete bainitic transformation during austempering treatment is mainly caused by the supersaturation of austenite with carbon. Such supersaturated austenite becomes more stable and further stabilization is led by silicon alloying. Stable austenite does not transform and&...

One approach to producing hybrid bimetallic parts is to additively manufacture a new material onto a conventionally manufactured base material. This technique can expand the potential applications of additive manufacturing and offer new solutions for the engineering design of hybrid parts. I...

This work focuses on the optimization of the stabilizing legs of a Glass Fibre Reinforced Polymer under- ground tank. More specifically, the aim was to find a structure of the legs that compensates for the pos- sible failure of the tank when it is filled after being&...

Precipitation hardening is one of the most frequently used methods of the post-processing heat treatments of 3D printed tool steel 1.2709, as it increases the yield and ultimate tensile strengths of the steel. Within this work, the broad temperature range of 250°C – 550°C was&...

This paper introduces a new alloying concept for low-density steels. Based on model calculations, samples—or “heats”—with 0.7 wt% C, 1.45 wt% Si, 2 wt% Cr, 0.5 wt% Ni, and an aluminium content varying from 5 to 7 wt% are prepared. The alloys are designed to obtain st...

Parts made by 3D printing must be subjected to heat treatment to achieve the required mechanical properties. With the development of additive manufacturing in various areas of industry, more and more complex components are being printed, which, in addition to their complicated shape,&#x...

In this study, the effect of various surface treatments, including sand-blasting, drag-finishing, turning, grinding, and grinding + drag-finishing, on surface roughness (SR) and fatigue properties of laser beam powder bed fused Inconel 718 was examined. SR values obtained from two surface me...

Three cutting technologies, plasma, laser, and acetylene, were used to produce the same geometry of a hole with 33 cm diameter. The plates of the same steel St-37 (1.0038, ČSN 11375) with a thickness of 50 mm were used in all three cases and the aim of the ...

An experimental steel 42SiCr was heat treated with a quenching and partitioning treatment in order to achieve high strength and at the same time acceptable ductility. This crucial combination requires the formation of a martensitic microstructure with a small volume fraction of retained...

Low carbon low alloyed high strength steel with the chemical composition suitably designed to support the stabilization of retained austenite was used in this work. The steel was processed by conventional annealing for a reference and several different heat and thermo-mechanical treatments&#...

The primary purpose of this article is to present a maturity model dealing with environmental manufacturing processes in a company. According to some authors, Industry 4.0 is based on characteristics that have already been the focus of “lean and green” concepts. The goal of th...

The aim of this paper is to evaluate the influence of small variations in chemical composition on the corrosion resistance and mechanical properties of low-manganese and medium manganese high strength steels. Six different steels with manganese content varying from 1.5 to 4.0 wt.% ...