Manufacturing Technology Journal - Latest articles
Results 271 to 279 of 279:
Effect of Refined Spheroidizated Structure on Mechanical Properties of Spring Steel 51CrV4
Jakub Kotous, Daniela Nacházelová, Jaromír Dlouhý, Martin Rund
Manufacturing Technology 2023, 23(1):40-46 | DOI: 10.21062/mft.2023.012 
The steel 51CrV4 is widely used for production of springs. Materials research into spring steels aims to meet the requirements of industry, which mainly concern high yield and tensile strengths. Ductility has to be retained as the strength is increased. Also, the resistance against brittle fracture is im-portant, measured as fracture toughness. Enhancement of the mentioned mechanical properties can be accomplished by structural refinement. One possible way to refine the final quenched and tem-pered structure is to refine the soft annealed structure before quenching. The article is devoted to the Accelerated Carbide Spheroidisation and Refinement (ASR)...
Evaluation of Riveting Force Influence on the Quality of Riveted Joint of Aluminium Alloy EN AW - 6016
Josef Bradáč, Jiří Sobotka
Manufacturing Technology 2023, 23(1):2-10 | DOI: 10.21062/mft.2023.011
Joining technologies are very important aspects of production process in the automotive. Especially regarding the use of newly developed types of materials (e.g. ultra high-strength steels or aluminium alloys), in addition to welding technology, e.g. riveting or adhesive bonding technologies are used. Submitted article evaluates the effect of the riveting force on the final quality of riveted joint when joining aluminium alloy EN AW-6016 (thickness 2 mm). The actual evaluation of the riveted joint was carried out using a shear test, measuring the hardness HV01 and deformation analysis of specimen using non-contact optical scanning (ATOS III Triple...
Research of Robots in Cooperative Mode in Human Body Part Detection
Josef Ponikelský, Vít Černohlávek, Jan Štěrba, Pavel Houška
Manufacturing Technology 2023, 23(1):99-109 | DOI: 10.21062/mft.2023.007
The aim of this article is to approach the measurement of forces and pressures of collaborative robots. In the article, research will be carried out on measuring the forces and pressures of a collaborative robot before putting it into real application. Force and pressure values will be measured using appropriate measuring devices. The measured results will be compared with the ISO/TS 15066:2016 technical specifi-cation and subsequently evaluated.
Influence of Using Cutting Fluid under the Effect of Static Magnetic Field on Chip Formation in Metal Cutting with HSS Tools (turning operation)
Umidjon Mardonov, Saidamin Khasanov, Andrey Jeltukhin, Shakhrizoda Ozodova
Manufacturing Technology 2023, 23(1):73-80 | DOI: 10.21062/mft.2023.006
This paper presents a new method of improving the material removal process in metal cutting. Chip formation plays an important factor in the metal cutting process and increasing its condition has a great impact on cutting machine details. Based on lubricating cooling conditions in the metal cutting process, a novel methodology is proposed to decrease the deformation that emerged in the material removal process while cutting cylindrical details in lathes. Application of stating magnetic field on flowing cutting fluids decreased the shrinkage of the chip in turning operation. Analytical and practical experiments show that the effect of cutting fluid...
Topology Optimization of Static Turbomachinery Components
Francesco Buonamici, Enrico Meli, Nicola Secciani, Alessandro Ridolfi, Andrea Rindi, Rocco Furferi
Manufacturing Technology 2023, 23(1):11-24 | DOI: 10.21062/mft.2023.005
Additive Manufacturing has enabled the design of complex components in several technical fields. Considering turbomachinery components, additive manufacturing has unlocked the achievement of significant performances for dynamic rotoring components. The application of topology optimization methods is one of the main factors accelerating the technological development of this sector. This paper presents a procedure for the optimization of static turbomachinery components. The frame-work proposed compares the results obtained by introducing a lattice structure and a solid optimized shape. The procedure is presented with reference to a specific case study....
Economical and Statistical Optimization of the Maintenance in the Production Process
Eliška Cézová
Manufacturing Technology 2023, 23(1):32-39 | DOI: 10.21062/mft.2023.004
The article presents a comprehensive example that demonstrates the control of a plastic injection process in practice. It includes measurement and analysis of the production process, its control using a control diagram to bring the production process to a state under statistical control by applying tests of non-random clusters and subsequent evaluation of process capability. The last part of the article gives an example of the maintenance of economical statistical optimization for four scenarios.
Evaluation of Selected Technological Parameters for Selective Laser Melting of AlSi10Mg Metal Powder
Jozef Šutka, Denisa Medvecká, Radoslav Koňar, Marek Bruna, Marek Matejka
Manufacturing Technology 2023, 23(1):110-117 | DOI: 10.21062/mft.2023.003
Reusing the powder across consecutive route cycles is typical in a Selective Laser Melting (SLM) process since it is more sustainable and cost-effective. The theoretical part of the paper is oriented on the explanation of the SLM method principle, construction, and parameters of the device Renishaw AM250 used for manufacturing samples made of AlSi10Mg aluminium alloy. The experimental part focuses on evaluating powders that had been used in the process for a long time with periodic ‘rejuvenation’. The main aim will be to monitor whether the samples will be affected and if they achieved the required quality of mechanical properties and compare...
Studies on a Robotised Process for Forging Steel Synchronizer Rings in the Context of Forging Tool Life
Artur Meller, Marcin Suszyński, Stanisław Legutko, Marek Trączyński, Vit Cernohlavek
Manufacturing Technology 2023, 23(1):88-98 | DOI: 10.21062/mft.2023.002
This paper proposes a solution not previously used in the forging industry, which aims to reduce the proportion of arduous human labour. The concept of a prototype robotic station for hot forging includes a system that allows the selection of batch material with its heating, the execution of the process of lu-brication of forging tools and the forging itself, synchronised with the feeding and removal of material using full automation, in accordance with the idea of Industry 4.0. At the same time, by increasing the repeatability of the entire forging process and changing some of its key parameters, it will be possible to influence the durability of...
Influence of Impurity Morphology on the Fatigue Strength of High-Purity Structural Steel Melted in an Electric Furnace
Tomasz Lipiński
Manufacturing Technology 2023, 23(1):53-59 | DOI: 10.21062/mft.2023.001
A modern user requires low operating costs, but also reliability from machines and technical devices. Reliability during the service life depends on the quality of construction solutions, but also largely on the quality, properties and adaptation to the working conditions used in the construction of construction materials. During the operation of technical objects, their a highly predictable wear occurs. The problem is the phenomena of premature wear and damage of elements. The causes of failure of technical facilities are usually complex and depend on many factors. They can include the human factor and the one related to the quality, selection, production...