<abstract xmlns="http://www.w3.org/1999/xhtml">Age-hardening provides one of the most widely used mechanisms for the strengthening of aluminum alloys. The age-hardening involves three steps: solution treatment, quenching and aging. The temperature of solution treatment and aging is very important in order to reach desired properties of castings. The optimum temperature of solution treatment and aging led to formation microstructural features in form which does not lead to decreasing properties, but increasing ones. The major micro-structural features in A 226 cast alloys which are responsible for increasing properties are: eutectic Si particles, Cu-rich phases, Fe-rich phases and porosity. The increase of properties depends on morphology, size and volume of microstructural features. In order to assess age-hardening influence on microstructural features in A226 cast alloys were used as possibilities of evaluation by means of image analysis. Quantitative analysis decelerate changes in microstructure includes the spheroidization and coarsening of eutectic silicon, gradual disintegration, shortening and thinning of Fe-rich intermetallic phases, the dissolution of precipitates and the precipitation of finer hardening phase (Al2Cu) further increase in the hardness and tensile strength in the alloy. Changes of mechanical properties were measured in line with STN EN ISO.</abstract>

Microstructural features evaluation of age-hardened A 226 cast alloy by image analysis

<abstract xmlns="http://www.w3.org/1999/xhtml">Aluminium, titanium, and nickel base alloys are mostly and widely used for aircraft jet engine construction. A proper evaluation of its microstructure is important from working safety point of view. To receive a well prepared sample of microstructure, some important steps have to be undertaken. Except for proper grinding and polishing of a sample, structure developing is a significant step, too. In order to develop microstructure various chemical reagents were used to achieve the best results for microstructure evaluation. The chemical reagents were used according to the previous knowledge and some new ones were also tested. Aluminium AK4-1č, titanium VT – 8, and nickel VŽL – 14 and ŽS6 – U alloys were used as an experimental materials. Alloy AK4-1č is used for fan blade production with working temperatures up to 300°C. It is a forged piece of metal machined down into final shape by five-axe milling machine. Alloy VT – 8 is used for high pressure compressor rotor blade production with working temperatures up to 500°C. Blades are forged as well and finally grinded. Finally nickel base alloys VŽL – 14 and ŽS6 – U are used for turbine blade production with working temperatures up 950°C. Blades for turbine are casted into mould with reducible models.</abstract>

A brief overview and metallography for commonly used materials in aero jet engine construction

<abstract xmlns="http://www.w3.org/1999/xhtml">The paper presents the results of low and high frequency fatigue tests carried out on nodular cast iron. The specimens of synthetic nodular cast irons from three different melts were studied in the high cycle fatigue region (from 105 to 108 cycles) using fatigue experimental equipments for low and high frequency cyclic loading. Low frequency fatigue tests were carried out at frequency f ≈ 120 Hz using the fatigue experimental machine Zwick/Roell Amsler 150HFP 5100; high frequency fatigue tests were carried out at frequency f ≈ 20 kHz using the ultrasonic fatigue testing device KAUP-ZU. Both fatigue tests were realised at sinusoidal cyclic push-pull loading (stress ratio R = −1) at ambient temperature (T = 20 ± 5 °C).</abstract>

Comparison of low and high frequency fatigue tests

<abstract xmlns="http://www.w3.org/1999/xhtml">Health and safety at work issue concerns every employer. Adjusting the work environment to legal requirements and standards is the key to creating health and safety culture. In every functioning OSH system there are various types of problems that employers face. The subject of the article is how to solve the problem of safety in production systems using the brainstorming method. The basic element of creating health and safety culture is an appropriate approach to occupational risk management. Risk assessment in the workplace should take place in teams as it is possible to reliably identify hazards and accurately assess them.</abstract>

Occupational health and safety management with the use of brainstorming method

<abstract xmlns="http://www.w3.org/1999/xhtml">The motivation of investigation is explained by the problem of keeping organisations’ information and private ones secure. One reason for this is insufficiency of information protection systems, and another – vulnerability in such kind of systems. The article is devoted to defining and analyzing the types and sources of information security threats for an automated system. It can be useful for developing the model method, having the purpose of detecting and further preventing of hazards. The safeness of Data Leak Prevention (DLP) system itself is also under investigation. The analysis was carried out by an expert method with system analysis. A DLP system was considered, on the one hand, as a way of information protection to prevent information leakage, and on the other hand, as an object of protection which is vulnerable to threats of information security. The presented threat model includes the sources of threats, divided into three large groups: anthropogenic, technogenic and spontaneous; and types of threats: intentional and unintentional.</abstract>

Information Technology and Data Protection Department

the Ural State University of Railway Transport

Foreign Languages and Intercultural Communication Department

Ural State University of Railway Transport

Analysis of information security threats for developing DLP-systems

<abstract xmlns="http://www.w3.org/1999/xhtml">According to research, metal processing industry has the highest risk of accidents at work, due to the necessity for personal protective equipment use and strict execution of safety rules and procedures. The paper presents the individual characteristics of health and safety management in the company producing steel flat bars. Special attention has been paid to the safety aspect of the use of automated logistical equipment (gantries, automatics) that increase the risk of work-related accidents. The results of research on the difficulties resulting from the specifics of production (metallurgical industry) has been presented.</abstract>

Difficulties in work safety management in a company producing steel flat bars

<abstract xmlns="http://www.w3.org/1999/xhtml">The paper presents the results of research carried out in one of the domestic companies producing rubber and plastics products for the automotive industry. The results of the evaluation of the quality control function during production of the low pressure hoses and the characteristics of the main machine taking part in this production process are presented. An analysis of the results of the evaluation of factors influencing the quality of production is presented and guidelines for improving this production process are presented. One of the proposed solutions for improvement is the modernization of the machine park and introduction of production nests.</abstract>

Improving production of low pressure hoses

<abstract xmlns="http://www.w3.org/1999/xhtml">Neodymium magnets currently dominate the magnet market due to their superior magnetic properties with maximum volume minimization. In this paper, the results of X-ray analysis for two types of magnetic powder obtained from the recovered magnets traditionally used in electric motors and hard disk have been presented. The NdFeB magnets are composed of 25-35 wt. % rare earth elements (RE) and the rest being transition metals (mainly Fe.). RE, other than Nd, such Dy, Pr, Tb and Gd or exogen elements, other than Fe, such as Al, Co, Ga, Nb, Si, Cu and Zr can also be present as minor admixtures. This paper brings an opportunity to introduce the hard magnets recycling technology on an industrial scale.</abstract>

Department of Production Engineering and Safety

Technological and ecological safety in aspect of chemical properties of recycled neodymium magnets – electric motors and hard disk

<abstract xmlns="http://www.w3.org/1999/xhtml">In the paper, the method of the production process improvement with the use of lean production tools has been presented. The Value Stream Mapping (VSM) for the cardboard packaging production process has been presented. On the basis of the current state map (CSM), areas for improvement have been designated – 5 organizational changes of the process were marked out. To minimize the three basic losses excessive storage, unnecessary movement and delays, the changes were introduced in the method of inter-operative transport, supervision of the storage condition (input and output of the process), control at the processing operation and the use of a production loop. As a result of the changes, it is possible to shorten the process time, shorten the total time of operations adding value and reduce the number of non-compliant products.</abstract>

Value Stream Mapping as Lean Production tool to improve the production process organization – case study in packaging manufacturing

<abstract xmlns="http://www.w3.org/1999/xhtml">The article presents a case study of the identification and analysis of operating and equipment losses in a steel plant. Losses may be visible in costs resulting from premature wear of machine and equipment components, removal of emergency failures related to quality losses, including loss of reputation of a reliable supplier, as well as losses related to production, especially in the case of continuous production. The analysis of losses was based on the cost criterion, including losses resulting from the loss of a potential client. The real data from the 2016 were used in the case study. In order to ensure proper operation at the finishing department, standard solutions have been developed. The analysis of losses was based on the Pareto principle and the analysis of TPM coefficients.</abstract>

The analysis of machine operation and equipment loss in ironworks and steelworks

AHEAD OF PRINT

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Volume 29 (2023): Issue 4 (December 2023)

Volume 29 (2023): Issue 3 (September 2023)

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Volume 29 (2023): Issue 1 (March 2023)

Volume 28 (2022): Issue 4 (December 2022)

Volume 28 (2022): Issue 3 (September 2022)

Volume 28 (2022): Issue 2 (June 2022)

Volume 28 (2022): Issue 1 (March 2022)

Volume 27 (2021): Issue 4 (December 2021)

Volume 27 (2021): Issue 3 (September 2021)

Volume 27 (2021): Issue 2 (June 2021)

Volume 27 (2021): Issue 1 (March 2021)

Volume 26 (2020): Issue 4 (December 2020)

Volume 26 (2020): Issue 3 (September 2020)

Volume 26 (2020): Issue 2 (June 2020)

Volume 26 (2020): Issue 1 (March 2020)

Volume 25 (2019): Issue 25 (December 2019)

Volume 24 (2019): Issue 24 (September 2019)

Volume 23 (2019): Issue 23 (June 2019)

Volume 22 (2019): Issue 22 (March 2019)

Volume 21 (2018): Issue 21 (December 2018)

Volume 20 (2018): Issue 20 (September 2018)

Volume 19 (2018): Issue 19 (June 2018)

Volume 18 (2018): Issue 18 (March 2018)

Volume 17 (2017): Issue 17 (December 2017)

Volume 16 (2017): Issue 16 (September 2017)

Volume 15 (2017): Issue 15 (June 2017)

Volume 14 (2017): Issue 14 (March 2017)

Production Engineering Archives

 The Journal of "Production Engineering Archives" has been published by the Publishing Office of Quality and Production Managers Association since 2013 as a quarterly. It is an international peer-reviewed, open access journal published four times per year only in the English language. It is published both in printed and electronic versions.  The works papers which are published in the PEA Journal are devoted to production engineering, quality of materials and technology. The PEA journal accepts review articles, original scientific articles, short communications, case studies. All articles published in Production Engineering Archives are permanently free for everyone to read and download. The journal is on the list of scientific journals of the Polish Ministry of Science and Higher Education. Presently (since 2013) each paper is awarded with 5 points (the list B, pos. 2039).   The Journal "Production Engineering Archives" is the international platform of the scientific exchange within the theory of the production engineering systems organizing, management and functioning theory. The area of interest focuses on the following systems: production, quality, total productive maintenance, materials engineering, environmental protection, occupational health and safety, human resources management including elements of innovation and continuous improvement. Published works include technical, economic and social issues. The articles are published in English. Each manuscript submitted for publication in the PEA journal is reviewed (double blind peer-review). All works published in PEA are available on the Journal's website. The members of the Scientific Committee are eminent specialists in the field of production engineering, materials engineering, quality and safety management, human resources, who are working in Poland and abroad. ScopeSubject areas, suitable for publication, include the following fields:    Production engineering  Quality and production management  Improvement of production processes  Safety system  Quality and improvement in materials engineering  TPM (Total Productive Maintenance)  Advanced technology  Intellectual potential management in production engineering   Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 