Applied sciences

Archives of Foundry Engineering

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Archives of Foundry Engineering | 2024 | vol. 24 | No 3

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Abstract

High pressure die casting (HPDC) is one of the most productive casting methods to produce a wide range of aluminum components with high dimensional accuracy and complex geometries. The process parameters of high-pressure casting generally directly affect the resulting quality of the castings, such as the presence of pores in the casting or the microstructure. In addition to air entrapment, porosity can also be caused by the dissolution of hydrogen. Hydrogen is released by the reaction of water vapor and melt at high temperatures and is released during solidification. These defects can lead to a significant reduction in mechanical properties such as strength and ductility and especially fatigue properties. The aim of the presented article is to describe the effect of the temperature of the core of the high-pressure mold on the presence and distribution of porosity and the microstructure of the aluminum casting in two geometric variants. The temperature of the core was changed due to the use of two flowing media in the thermoregulation circuit of the core, i.e. demineralized water and heat transfer oil and worked with a core temperature of 130 ± 5 and 165 ± 5 °C. With both geometric variants, a higher porosity was achieved when using water (core temperature 130 ± 5 °C) than when using oil (core temperature 165 ± 5 °C). The opposite results were observed for microporosity, where higher microporosity was observed for tempering oil. The microstructure of the casting with water-cooled cores was more characterized by finer grains of phase α (Al) and eutectic Si. In tempering oil, the microstructure was characterized by coarse grains of the α phase (Al) and the Si lamellae were in the form of sharp-edged formations.
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Authors and Affiliations

M. Matejka
1
ORCID: ORCID
D. Bolibruchová
1
ORCID: ORCID
R. Podprocká
2
P. Oslanec
3
ORCID: ORCID

  1. University of Zilina, Faculty of Mechanical Engineering, Department of Technological Engineering, Slovakia
  2. Rosenberg-Slovakia s.r.o., Slovakia
  3. Slovak Academy of Sciences, Institute of Materials and Machine Mechanics, Slovakia
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Abstract

Nowadays, the emphasis is on improving the integrity of precision castings of Fe, Ni and Co alloys (improving the mechanical properties of the material and increasing process efficiency) more than ever before. For this reason, a technology has been developed which is a combination of low-pressure casting and investment casting. The premise of the combination of these technologies is that a high degree of automation should be achieved, based on low-pressure casting, while bottom filling will reduce reoxidation phenomena during filling. Mainly due to the higher purity of the melt, higher values of mechanical properties in conjunction with shape and geometric accuracy are expected, which guarantees the investment casting. For this purpose, an experimental casting machine has been designed, which is a combination of these two technologies, where we are able to eliminate the disadvantages of low-pressure casting, which include, for example, the low variability of the usable materials, as well as the disadvantages of investment casting, which include the low automation of the process. Using an experimental machine, tensile and impact test samples were cast and subsequently tested. From the initial experiments, it can be said that using this technology we are able to cast materials based on Fe alloys, Ni alloys and Co alloys with mechanical property values that are even close to or within the range of mechanical properties of the formed materials. As a result, the mechanical properties of castings cast by the LPIC method are shown to be tougher and stronger.
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Authors and Affiliations

O. Vrátný
1
A. Herman
1
V. Novák
1
P. Chytka
1
M. Jarkovský
1
Z. Kopanica
1
J. Zeman
1

  1. Czech Technical University in Prague, Faculty of Mechanical Engineering, Czech Republic
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Abstract

In this work, a new method of near-infrared curing 3D printing sodium silicate sands (NIRC3DPSSS) driven by photovoltaic cells was proposed, and the Span-80 moisture resistance modifier was studied. NIRC3DPSSS had the advantages of high strength, rapid curing and low residual strength. However, the 24h storage strength would reduce because Na+ in the bonding bridges could absorb moisture. The experimental results showed that the strength of Span-80 modified sands molds reached 0.95MPa after 4 hours in a humidistat with 99%RH (relative humidity) containing 2.2% sodium silicate, an increase of 97.9% comparing to common sands molds. In air(80%RH), the strength reached 1.25MPa, an increase of 40.4%. The optimal effect of modification was achieved when Span-80 was 0.066% of the raw sands. Additionally, the bonding film and bridges in sodium silicate sands modified with Span-80 were more stable, smoother and free of cracks when observed using scanning electron microscopy (SEM) and energy dispersive spectroscopy(EDS).
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Authors and Affiliations

Ao Xue
1
Yuhan Tang
1
Yao Li
2
Weihong Dai
1
Jijun Lu
1
ORCID: ORCID
Huafang Wang
1
ORCID: ORCID

  1. School of Mechanical Engineering and Automation, Wuhan Textile University, China
  2. Dongfeng Motor Corporation Research & Development Institute, China
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Abstract

The article presents the results of studies of the process of accelerated drying performed by means of microwave radiation of ceramic moulds deposited on patterns made of foamed plastics used in the Ceramic Shell technology. The studies aimed at determining the microwave radiation parameters (power, downtime, and uninterrupted operation time) in order to obtain the maximally short drying times which do not cause pattern destruction. The analysis of results confirmed that an increase of the microwave radiation power shortens the drying time of the particular layers of the ceramic mould, however, at the same time, it excessively raises the temperature of the mould. With the microwave power over 1200 W, we can obtain the drying time of one layer at the level of about 30 min, and the temperature of the mould reaches the value of 70oC, which does not cause deformation or partial melting of the polystyrene pattern. From the point of view of production effectiveness, as a result of the application of microwave drying, the time of production of ceramic moulds was shortened from 7 days to 1 working day.
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Authors and Affiliations

P. Just
1
R. Kaczorowski
1
M. Topola
1
T. Pacyniak
1
ORCID: ORCID
C. Rapiejko
1
ORCID: ORCID

  1. Department of Materials Engineering and Production Systems, Lodz University of Technology, ul. Stefanowskiego 1/15, 90-537 Łódź, Poland
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Abstract

The paper presents the results of damping coefficient tests on the ZnAl27Cu2 alloy (ZL27). The tested alloy was cast into five types of molds made of different materials (a steel mold with an ambient temperature of 20°C, a steel mold with a temperature of 100°C, a humid green sand mold, a dried green sand mold and a mold made of foundry gypsum mass). The thermophysical properties of these materials are different, and that's affecting the rate of heat absorption from the cast. Different mold materials affect obtaining different cooling rates. The cooling rate significantly affects the microstructure of the tested alloy. The specimens of investigate alloy were subjected to ultrasound and microscopic tests to assess the alloy structure. The damping coefficient has been calculated on the basis of specimen measurements obtained with the use of the signal echo method. Research shows that high structural fragmentation adversely affects the damping properties of alloys is confirmed. On the other hand, very low cooling rate, resulting in the formation of large, overgrown dendrites, does not guarantee the highest vibration damping capacity for this particular alloy. It turns out in this case a humid green sand mold, (cooling rate of 5.1 K/s) guarantees the best damping properties for the ZL27 alloy.
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Authors and Affiliations

G. Piwowarski
1
J. Cepielik
1

  1. AGH University of Krakow, Poland
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Abstract

The article concerns the technology of layered castings made with a system where the base part is made of gray cast iron with flake graphite and the working part is made of high-chromium steel X46Cr13. The castings were produced using mould cavity preparation method utilizing a molding sand based on SiC. The idea of the research was to perform heat treatment of X46Cr13 steel directly in the casting mould, with the success of this approach guaranteed by selecting molding sand with appropriate physicochemical parameters. During the pouring and cooling of the mould, the temperature on the outer surface of the steel insert was recorded to check if it reached the required austenitization temperature. The castings were then examined for the quality of the bond between the gray cast iron base part and the steel working part, microstructure studies were conducted using light and scanning microscopes, and hardness was measured on the surface of X46Cr13 steel. Based on the conducted research, it was found that the high thermal conductivity of the molding sand made with a silicon carbide base disqualifies it for use in the analyzed technology of integrating heat treatment of X46Cr13 steel with the process of producing a bimetal system with gray cast iron. In the microstructure of the steel, in addition to martensite, pearlite and ferrite were present. Therefore, a satisfactory increase in the hardness of the working surface compared to the annealed state of X46Cr13 steel was not achieved, which ultimately confirmed that the hardening of the steel insert was unsuccessful.
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Bibliography


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[13] PN-H-11077:1983

[14] PN-H-11001:1985

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Authors and Affiliations

N. Przyszlak
1
T. Wrobel
1

  1. Department of Foundry Engineering, Silesian University of Technology, Towarowa 7 St., 44-100 Gliwice, Poland
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Abstract

The results of tribological tests carried out on two novel high-entropy alloys (HEAs) from the AlCoCuFeNi group are described in this study. Research was carried out using a Miller machine (ASTM G75 standard) in an abrasive slurry environment, which contained SiC and water in a 1:1 ratio. The results obtained showed a higher rate of abrasive wear in the material designated as D3 (total weight loss in D3-1.6g compared to 1.1g in the D5 alloy), characterised by a homogeneous microstructure and hardness of 186 HV5. The second dual phase alloy, designated D5, was characterised by a lower rate of abrasive wear. In this alloy, the appearance of the second phase precipitates, evenly distributed throughout the entire volume, with higher hardness (760 HV0,01) and in a content of approximately 65% has led to a decrease in wear. The different wear resistances of the tested materials are due to differences in the hardness of the phases that constitute the microstructure of the tested alloys and the interaction of hard abrasive particles with the tested material. This has a direct impact on the plastic nature of the deformation in the upper layers of the samples. A characteristic system of linear grooves and protrusions, visible on surface profiles, was observed on the surfaces tested. Small local defects were also observed as a result of hammering and subsequent removal of hard SiC abrasive particles from the alloys tested or, in the case of the D5 alloy, additional removal of precipitates of the harder phase from the matrix.
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Authors and Affiliations

K. Chrzan
1 2
ORCID: ORCID
B. Kalandyk
2
M. Grudzień-Rakoczy
1
ORCID: ORCID
Ł. Rakoczy
3
K. Cichocki
3

  1. Łukasiewicz Research Network – Krakow Institute of Technology, Centre of Materials and Manufacturing Research, Poland
  2. AGH University of Krakow, Faculty of Foundry Engineering, Poland
  3. AGH University of Krakow, Faculty of Metals Engineering and Industrial Computer Science, Poland
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Abstract

This article presents a analysis of the impact of varying amounts of a specific additive in the core mixture and adjustments in shooting pressure on the elimination of surface defects in castings, particularly veinings. These defects, often located in inaccessible areas of the casting, cannot be effectively removed through conventional methods like punching, making the optimization of the core mixture composition crucial. Additives are frequently incorporated into the core mixture, as they have become an essential component in its production. For the core mixture to be effective, it is not only essential to identify the appropriate type of additive but also to precisely determine the optimal quantity of the additive and accurately set other critical production parameters, such as shooting pressure.This study investigates the influence of additive concentration and shooting pressure on the surface quality of cast iron castings, employing the cold box method for core production. The findings reveal that higher shooting pressure contributes positively to the reduction of veining defects. However, an increased additive content in the core mixture does not necessarily ensure vein-free castings. The additive also plays a role in reducing the gas content within the core, and increased core hardness is associated with a decrease in the occurrence of veining defects. The casting with the highest surface quality and the fewest veinings was produced using cores made from a mixture with 1% additive content, subjected to a shooting pressure of 4 bars.
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Bibliography


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Authors and Affiliations

P. Delimanová
1
ORCID: ORCID
I. Vasková
1
ORCID: ORCID
O. Kožej
1
ORCID: ORCID

  1. Technical University of Košice Faculty of Materials, Metallurgy and Recycling, Slovak Republik
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Abstract

The paper presents the results of dimensional and shape analysis of additively manufactured shaped parts of foundry moulds; specifically, shaped gate valve inserts made of DIEVAR steel used in the die-casting process of aluminium alloys. The paper aims to provide a comprehensive overview of dimensional and shape analysis during the manufacturing of shaped mould parts before their use in foundry operating conditions. The manufacturing operations include additive manufacturing, heat treatment, machining, and applying a protective coating. Based on these technological operations, the required component accuracy is achieved before application in the operating conditions. The dimensional and shape analysis was measured by 3D scanning and 3D measuring methodology on a coordinate measuring machine. The ROMER ABSOLUTE ARM 3D scanning arm and the THOME PRÄZISION coordinate measuring machine were used for the measurements. The paper presents findings in the development and application of additive manufacturing technologies in engineering metallurgy.
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Authors and Affiliations

T. Sellner
1 2
L. Socha
1
K. Gryc
1
A. Mohamed
1
M. Pinta
1 2
J. Sviželová
1
K. Koza
1 2
M. Dvořák
3
M. Roh
3

  1. Environmental Research Department, Institute of Technology and Business in České Budějovice, Okružní 517/10, 370 01 České Budějovice, Czech Republic
  2. Department of Materials and Engineering Metallurgy, Faculty of Mechanical Engineering, University of West Bohemia, Univerzitní 2732/8, 301 00 Plzeň, Czech Republic
  3. Tool Shop Division, MOTOR JIKOV Fostron a.s., Kněžskodvorská 2277, 370 04 České Budějovice, Czech Republic
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Abstract

Parameters of the moulding process in foundry are usually determined by trial-and-error method, and this way contributes to time taken and adds further cost for production sand. The present work represents an attempt to optimize sand moulding parameters in terms of compactability, compaction time, and air pressure, and to study effect of these factors on the green sand flowability using L4 design of experiments. Regression model, Taguchi method, and experimental verification were used to investigate flow property of sodium bentonite- bonded BP-quartz sand for sand moulding.
Analysis of variance (ANOVA) was employed to measure significance and contributions of different moulding variables on flowability of green sand. The values obtained showed that the compaction time factor significantly affected flowability of green sand while compactability and air pressure have slight effects. The comparison results of Taguchi method, regression predictions and experiments exhibited good agreement.
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[21] Charnnarong Saikaew, & Sermsak Wiengwiset, (2012). Optimization of molding sand composition for quality improvement of iron castings. Applied Clay Science. 67-68, 26-31. DOI: 10.1016/j.clay.2012.07.005.

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Authors and Affiliations

Dheya Abdulamer
1
ORCID: ORCID
Ali A. Muhsan
1
ORCID: ORCID
Sinan S. Hamdi
1
ORCID: ORCID

  1. University of Technology- Iraq
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Abstract

The paper focuses on the investigation of the influence of Ti on selected properties of the hypoeutectic aluminium alloy AlSi5Cu2Mg. AlSi5Cu2Mg alloy finds application in the field of production of high-strength cylinder head castings intended for the automotive industry due to the optimal combination of mechanical, physical and foundry properties. In commercial production, the maximum Ti content is limited by the manufacturer (Ti max. = 0.03 wt.%), which significantly limits the possibilities of refinement the alloy with Ti-based grain refiners. Therefore, the possibility of increasing the Ti content beyond the manufacturer's recommendation is considered in this work. The main aim of the work is to evaluate the influence of graded Ti addition (0.1; 0.2; 0.3 wt.% Ti) on the resulting mechanical and physical properties of the AlSi5Cu2Mg alloy. Simultaneously, the influence of increased Ti content on the microstructure of AlSi5Cu2Mg alloy is evaluated. The alloying element was introduced into the melt in the form of AlTi5B1 master alloy. The effect of T6 heat treatment on the resulting mechanical and physical properties and microstructure of the hypoeutectic AlSi5Cu2Mg alloy with graded Ti addition was also investigated in the experimental work.
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Bibliography

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Authors and Affiliations

M. Sýkorová
1
ORCID: ORCID
D. Bolibruchová
1
ORCID: ORCID
M. Brůna
1
ORCID: ORCID
M. Chalupová
1
ORCID: ORCID

  1. University of Zilina, Slovak Republic
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Abstract

The paper focuses on the research of hybrid aluminium castings produced by overcasting technology. This is an advanced technology for ensuring the lightness of castings by using the principle of overcasting a core with a porous cellular structure produced by foaming. Process parameters in the foaming phase of the material have a great influence on the resulting porous structure. The article focuses on controlling the influence of pressure during the foaming process on the resulting porosity and evaluating by X-ray tomograph and measuring the relative density. Variants using an initial pressure of 0.3 MPa appear to be the most satisfactory. The challenge of this technology is to ensure adequate bonding of the metals at the interface between the porous core and the solidified metal without penetrating the coating layer. For this reason, the surface treatment of foamed cores with various etchants has been proposed to disrupt the oxide layer on their surface. Macrographs of the uncoated sample and samples etched with 0.5% HF and 10% H3PO4 demonstrated the need for core surface treatment to prevent liquid metal penetration. EDX analysis confirmed the presence of AlPO4 at the core/casting interface in the treated sample.
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Authors and Affiliations

M. Brůna
1
ORCID: ORCID
M. Medňanský
1
ORCID: ORCID
P. Oslanec
2
ORCID: ORCID

  1. Faculty of Mechanical Engineering, Department of Technological Engineering, University of Zilina, Univerzitná 8215/1, 010 26 Žilina, Slovak Republic
  2. Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Inoval - Innovation center, Priemyselná 525 Ladomerská Vieska, 965 01 Žiar nad Hronom, Slovak Republic
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Abstract

The article presents the test results on the technology of surface hardening of castings from unalloyed and low-alloy nodular cast iron using the method of surface heat treatment, i.e., induction surface hardening and methods of thermochemical treatment, i.e. gas nitriding, nitrocarburizing, and nitrocarburizing with oxidation. The scope of research included macro- and microhardness measurements using Rockwell and Vickers methods, respectively, as well as metallographic microscopic examinations using a light microscope. Furthermore, abrasive wear resistance tests were performed using the pin-on-disk method in the friction pair of nodular cast iron – SiC abrasive paper and the reciprocating method in the friction pair of nodular cast iron – unalloyed steel. Analysis of the test results shows that the size and depth of surface layer hardening strongly depend on the chemical composition of the nodular cast iron, determining its hardenability and its ability to create diffusion layers. Medium induction surface hardening made it possible to strengthen the surface layer of the tested nodular cast irons to the level of 700 HV0.5 with a hardening depth of up to approximately 4000μm, while various variants of thermochemical treatment provided surface hardness of up to 750 HV0.5 with a hardening depth of up to approximately 200μm. Furthermore, induction surface hardening increased the resistance to abrasive wear of nodular cast iron castings, depending on the test method, by an average of 70 and 45%, while thermochemical treatment on average by 15 and 60%.
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Authors and Affiliations

C. Baron
1
ORCID: ORCID
M. Stawarz
1
ORCID: ORCID
A. Studnicki
1
J. Jezierski
1
ORCID: ORCID
T. Wróbel
1
ORCID: ORCID
R. Dojka
2
M. Lenert
1 2
K. Piasecki
1 2
ORCID: ORCID

  1. Silesian University of Technology, Department of Foundry Engineering, Towarowa 7, 44-100 Gliwice, Poland
  2. Odlewnia RAFAMET Sp. z o.o., ul. Staszica 1, 47-420 Kuźnia Raciborska, Poland
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Abstract

The study presents a comparison of the results of structural tests, impact strength and strength properties of cast iron EN-GJS-400-15, which is produced in industrial conditions and the ductile cast iron, with addition of nickel, in austenitic matrix. Due to the ongoing energy transformation and attempts to inject hydrogen into existing gas grids, gas fittings manufacturers are looking for materials that will be more resistant to the destructive effects of hydrogen than the currently used ductile cast iron. The aim of the work was to obtain cast iron with the addition of nickel (about 20%) with similar strength parameters, better impact strength, both at room temperature and at lower temperatures, as well as a stable austenitic matrix in ductile cast iron. All assumptions were achieved. In the future, research should be undertaken to develop an economically optimal chemical composition, without a significant loss of strength properties, and the resistance of gate valves made of austenitic cast iron to the destructive effects of hydrogen should be examined. The work is preliminary research.
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Authors and Affiliations

A. Rączka
1
A. Szczęsny
2
ORCID: ORCID
D. Kopyciński
2
ORCID: ORCID

  1. Fabryka Armatur JAFAR S.A. Kadyiego 12 Street 38-200 Jasło, Poland
  2. AGH University of Science and Technology, Faculty of Foundry Engineering, Reymonta 23, 30-065 Kraków, Poland
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Abstract

Accurate kinetic parameters are vital for quantifying the effect of binder decomposition on the complex phenomena occurring during the casting process. Commercial casting simulation tools often use simplified kinetic parameters that do not comprise the complex multiple reactions and their effect on gas generation in the sand core. The present work uses experimental thermal analysis techniques such as Thermogravimetry (TG) and Differential thermal analysis (DTA) to determine the kinetic parameters via approximating the entire reaction during the decomposition by multiple first-order apparent reactions. The TG and DTA results reveal a multi-stage and exothermic decomposition process in the binder degradation. The pressure build-up in cores/molds when using the obtained multi-reaction kinetic model is compared with the earlier approach of using an average model. The results indicate that pressure in the mold/core with the multi-reaction approach is estimated to be significantly higher. These results underscore the importance of precise kinetic parameters for simulating binder decomposition in casting processes.
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Bibliography

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Authors and Affiliations

Taishi Matsushita
1
ORCID: ORCID
Dinesh Sundaram
1
ORCID: ORCID
Ilja Belov
1
ORCID: ORCID
Attila Dioszegi
1
ORCID: ORCID

  1. Jönköping University, Sweden
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Abstract

The composition and pouring temperature are important parameters in metal casting. Many cast product failures are caused by ignorance of the influence of both. This research aims to determine the effect of adding tin composition and pouring temperature on fluidity, microstructure and mechanical properties including tensile strength and hardness of tin bronze (Cu-Sn). The Cu-Sn is widely used as employed in the research is Cu (20, 22 and 24) wt.%Sn alloy using the investment casting method. Variations in pouring temperature treatment TS1 = 1000°C and TS2 = 1100°C. The mold for the fluidity test is made with a wax pattern then coated in clay. The mold dimensions are 400 mm long with mold cavity variations of 1.5, 2, 3, 4, 5 mm. Several parameters: increasing the pouring temperature, adding tin composition, decreasing the temperature gradient between the molten metal and the mold walls result in a decrease in the solidification rate which can increase fluidity. The α + δ phase transition to β and γ intermetallic phases decreases fluidity at >22wt.%Sn. The columnar dendrite microstructure increases with the addition of tin composition and pouring temperature. The mechanical properties of tensile strength decrease, hardness increases and the alloy becomes more brittle with increasing tin composition.
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Authors and Affiliations

Sugeng Slamet
1
Slamet Khoeron
1
Ratri Rahmawati
1
Suyitno
2
Indraswari Kusumaningtyas
3

  1. Mechanical Engineering, Universitas Muria Kudus, Jl. Gondang manis, Po. Box 53, Bae, Kudus, Indonesia
  2. Mechanical Engineering, Universitas Tidar, Jl. Kapten Suparman 39, Magelang, Indonesia
  3. Departement of Mechanical and Industrial Engineering, Universitas Gadjah Mada, Jl. Grafika No.2 Yogyakarta, Indonesia
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Abstract

This article presents changes of the total casting production volumes and of the production of castings made from basic casting alloys in Poland, in Europe and worldwide in years 2001–2021. Analogous casting production parameters were compared for Poland, Europe and countries being the leading European and global manufacturers in years 2001, 2011 and 2021. The leading casting manufacturers in Europe (with the manufacturing volume exceeding 1 million tons in the mentioned years) include Germany, Italy, the Ukraine, France and Spain. For years, the largest casting manufacturer worldwide has been China. In 2001–2021, global casting production increased from ca. 68 million tons to ca. 97 million tons (i.e. by ca. 42%), whereas the European one decreased from ca. 17 million tons to ca. 12 million tons (i.e. by close to 30%). In the analyzed period, the Polish production volume grew from ca. 0.75 million tons to ca. 0.88 million tons (i.e. by ca. 17%). The presented data reveal the decreasing importance of gray cast iron and cast steel and the increasing one of ductile cast iron and aluminum alloys. However, the Polish average annual growth rate for aluminum alloy casting production was 10.3%, whereas the global one was 3% and the European one 0.7%.
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Authors and Affiliations

M.S. Soiński
1
ORCID: ORCID
A. Jakubus
1
ORCID: ORCID

  1. Jakub from Paradyz Academy in Gorzow Wielkopolski, 25 Teatralna St., 66-400 Gorzow Wielkopolski, Poland
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Abstract

The study focuses on the effect of rare earth elements (REM) in mischmetal on the morphology and chemical composition of non-metallic inclusions in pre-oxidised steel. Calculations were carried out using the WYK_STAL computer program according to two calculation models, considering/ignoring the sulphur partition coefficient at the liquid steel-liquid slag interfacial boundary. It was found that the chemical composition of the resulting precipitates is a consequence of the order in which deoxidising additives were admixed. Simulations confirmed the presence of Ce oxides and sulphides. This was also confirmed by the analysis of samples taken from the steel ingot after laboratory melting. Non-metallic inclusions Ce2O3 and CeS, and the complex of precipitates: La2O3-Ce2O3 was also identified in the steel. Introduction of mischmetal in the final stage refining is the most effective method. Therefore, the oxygen content is reduced below 0.001%, and the sulphfur content can be reduced to 0.004%.
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Authors and Affiliations

D. Kalisz
1
ORCID: ORCID
S. Sobula
1
ORCID: ORCID
A. Hutny
1 2
S. Gerasin

  1. AGH University of Krakow, Faculty of Foundry Engineering, Krakow, Polandul. Reymonta 23, 30-059 Kraków, Poland
  2. Częstochowa University of Technology, Faculty of Production Engineering and Materials TechnologyAl. Armii Krajowej 19, 42-200 Częstochowa, Poland
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Abstract

Corrosion-resistant steels form an important group of structural materials who’s mechanical and corrosion-resistant properties are an irreplaceable part of the engineering industry. Despite their designation as "stainless steel", it is necessary to consider that even these steels can be subject to various types of corrosion attack under certain conditions. The article presents the effect of a controlled protective nitrogen atmosphere on X5CrNi18-10 steel, which is used to produce auxiliary components in the automotive industry. Steel X5CrNi18-10 is not only subject to corrosion after a short time (2hr) in a nitrogen atmosphere, at a temperature of 570 to 630°C, but at the same time the mechanical properties also change. Nitrogen atmosphere is used in heat treatment in automotive and X5CrNi18-10 steel is often used in these conditions as an auxiliary material, e.g. base grid. One test for X5CrNi18-10 steel was that the samples were exposed to a nitrogen atmosphere at various temperatures and then the agreed yield stress Rp0.2, hardness and microstructure were evaluated. The second test was the evaluation of the frame made of the given steel at 630 °C. The testing took place in a continuous furnace. Temperatures above 500 °C significantly changes the material's features.
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Bibliography


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Authors and Affiliations

E. Kantoríková
1
ORCID: ORCID

  1. University of Žilina, Slovak Republic
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Abstract

The article presents structural investigations and mechanical properties of hard coatings deposited by spraying WCCoCr powder in an argon-hydrogen plasma jet onto the surfaces of AlSi10Mg alloy casting plates. Two variants (A and B) of processing parameters of the powder spraying process onto the surface of silumin plates were applied, resulting in different coating thickness. The coating applied according to variant A was done with 12 passes, and its thickness was approximately 150 μm. The coating applied according to variant B was done with 20 passes, and its thickness was about 320 μm. The microstructures of these coatings are similar, consisting of wavy, alternately deposited phases of solid solutions with varying concentrations of elements, and fine spherical phases, irregularly dispersed carbides. A qualitative analysis of the distribution of microstructure components was performed based on surface mapping. Precipitates differing in their degree of grayness and shape were identified based on microanalysis of their chemical composition. The porosity assessment of coatings performed in five randomly selected areas amounts to an average of 9%. The applied coatings exhibit good adhesion to the substrate, as evidenced by the absence of delamination during scratching tests using a diamond Rockwell indenter loaded with a force of 10 N. The coating hardness averaged 1180HV0.2. The test results indicate the high quality of the WCCoCr coatings, regardless of their thickness.
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Bibliography


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Authors and Affiliations

M. Radoń
1
ORCID: ORCID
Z. Opiekun
1
B. Kupiec
1

  1. Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

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The appointed reviewers obtain summary of the text and it is his/her decision upon accepting/rejecting the paper for review within a given time period 21 days.

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Reviewing is free of charge.
All articles, including those rejected and withdrawn, are archived in the Editorial System.

Reviewers

List of Reviewers 2022

Shailee Acharya - S. V. I. T Vasad, India
Vivek Ayar - Birla Vishvakarma Mahavidyalaya Vallabh Vidyanagar, India
Mohammad Azadi - Semnan University, Iran
Azwinur Azwinur - Politeknik Negeri Lhokseumawe, Indonesia
Czesław Baron - Silesian University of Technology, Gliwice, Poland
Dariusz Bartocha - Silesian University of Technology, Gliwice, Poland
Iwona Bednarczyk - Silesian University of Technology, Gliwice, Poland
Artur Bobrowski - AGH University of Science and Technology, Kraków
Poland Łukasz Bohdal - Koszalin University of Technology, Koszalin Poland
Danka Bolibruchova - University of Zilina, Slovak Republic
Joanna Borowiecka-Jamrozek- The Kielce University of Technology, Poland
Debashish Bose - Metso Outotec India Private Limited, Vadodara, India
Andriy Burbelko - AGH University of Science and Technology, Kraków
Poland Ganesh Chate - KLS Gogte Institute of Technology, India
Murat Çolak - Bayburt University, Turkey
Adam Cwudziński - Politechnika Częstochowska, Częstochowa, Poland
Derya Dispinar- Istanbul Technical University, Turkey
Rafał Dojka - ODLEWNIA RAFAMET Sp. z o. o., Kuźnia Raciborska, Poland
Anna Dolata - Silesian University of Technology, Gliwice, Poland
Tomasz Dyl - Gdynia Maritime University, Gdynia, Poland
Maciej Dyzia - Silesian University of Technology, Gliwice, Poland
Eray Erzi - Istanbul University, Turkey
Flora Faleschini - University of Padova, Italy
Imre Felde - Obuda University, Hungary
Róbert Findorák - Technical University of Košice, Slovak Republic
Aldona Garbacz-Klempka - AGH University of Science and Technology, Kraków, Poland
Katarzyna Gawdzińska - Maritime University of Szczecin, Poland
Marek Góral - Rzeszow University of Technology, Poland
Barbara Grzegorczyk - Silesian University of Technology, Gliwice, Poland
Grzegorz Gumienny - Technical University of Lodz, Poland
Ozen Gursoy - University of Padova, Italy
Gábor Gyarmati - University of Miskolc, Hungary
Jakub Hajkowski - Poznan University of Technology, Poland
Marek Hawryluk - Wroclaw University of Science and Technology, Poland
Aleš Herman - Czech Technical University in Prague, Czech Republic
Mariusz Holtzer - AGH University of Science and Technology, Kraków, Poland
Małgorzata Hosadyna-Kondracka - Łukasiewicz Research Network - Krakow Institute of Technology, Poland
Dario Iljkić - University of Rijeka, Croatia
Magdalena Jabłońska - Silesian University of Technology, Gliwice, Poland
Nalepa Jakub - Silesian University of Technology, Gliwice, Poland
Jarosław Jakubski - AGH University of Science and Technology, Kraków, Poland
Aneta Jakubus - Akademia im. Jakuba z Paradyża w Gorzowie Wielkopolskim, Poland
Łukasz Jamrozowicz - AGH University of Science and Technology, Kraków, Poland
Krzysztof Janerka - Silesian University of Technology, Gliwice, Poland
Karolina Kaczmarska - AGH University of Science and Technology, Kraków, Poland
Jadwiga Kamińska - Łukasiewicz Research Network – Krakow Institute of Technology, Poland
Justyna Kasinska - Kielce University Technology, Poland
Magdalena Kawalec - AGH University of Science and Technology, Kraków, Poland
Gholamreza Khalaj - Islamic Azad University, Saveh Branch, Iran
Angelika Kmita - AGH University of Science and Technology, Kraków, Poland
Marcin Kondracki - Silesian University of Technology, Gliwice Poland
Vitaliy Korendiy - Lviv Polytechnic National University, Lviv, Ukraine
Aleksandra Kozłowska - Silesian University of Technology, Gliwice, Poland
Ivana Kroupová - VSB - Technical University of Ostrava, Czech Republic
Malgorzata Lagiewka - Politechnika Czestochowska, Częstochowa, Poland
Janusz Lelito - AGH University of Science and Technology, Kraków, Poland
Jingkun Li - University of Science and Technology Beijing, China
Petr Lichy - Technical University Ostrava, Czech Republic
Y.C. Lin - Central South University, China
Mariusz Łucarz - AGH University of Science and Technology, Kraków, Poland
Ewa Majchrzak - Silesian University of Technology, Gliwice, Poland
Barnali Maji - NIT-Durgapur: National Institute of Technology, Durgapur, India
Pawel Malinowski - AGH University of Science and Technology, Kraków, Poland
Marek Matejka - University of Zilina, Slovak Republic
Bohdan Mochnacki - Technical University of Occupational Safety Management, Katowice, Poland
Grzegorz Moskal - Silesian University of Technology, Poland
Kostiantyn Mykhalenkov - National Academy of Science of Ukraine, Ukraine
Dawid Myszka - Silesian University of Technology, Gliwice, Poland
Maciej Nadolski - Czestochowa University of Technology, Poland
Krzysztof Naplocha - Wrocław University of Science and Technology, Poland
Daniel Nowak - Wrocław University of Science and Technology, Poland
Tomáš Obzina - VSB - Technical University of Ostrava, Czech Republic
Peiman Omranian Mohammadi - Shahid Bahonar University of Kerman, Iran
Zenon Opiekun - Politechnika Rzeszowska, Rzeszów, Poland
Onur Özbek - Duzce University, Turkey
Richard Pastirčák - University of Žilina, Slovak Republic
Miroslawa Pawlyta - Silesian University of Technology, Gliwice, Poland
Jacek Pezda - ATH Bielsko-Biała, Poland
Bogdan Piekarski - Zachodniopomorski Uniwersytet Technologiczny, Szczecin, Poland
Jacek Pieprzyca - Silesian University of Technology, Gliwice, Poland
Bogusław Pisarek - Politechnika Łódzka, Poland
Marcela Pokusová - Slovak Technical University in Bratislava, Slovak Republic
Hartmut Polzin - TU Bergakademie Freiberg, Germany
Cezary Rapiejko - Lodz University of Technology, Poland
Arron Rimmer - ADI Treatments, Doranda Way, West Bromwich, West Midlands, United Kingdom
Jaromír Roučka - Brno University of Technology, Czech Republic
Charnnarong Saikaew - Khon Kaen University Thailand Amit Sata - MEFGI, Faculty of Engineering, India
Mariola Saternus - Silesian University of Technology, Gliwice, Poland
Vasudev Shinde - DKTE' s Textile and Engineering India Robert Sika - Politechnika Poznańska, Poznań, Poland
Bozo Smoljan - University North Croatia, Croatia
Leszek Sowa - Politechnika Częstochowska, Częstochowa, Poland
Sławomir Spadło - Kielce University of Technology, Poland
Mateusz Stachowicz - Wroclaw University of Technology, Poland
Marcin Stawarz - Silesian University of Technology, Gliwice, Poland
Grzegorz Stradomski - Czestochowa University of Technology, Poland
Roland Suba - Schaeffler Skalica, spol. s r.o., Slovak Republic
Maciej Sułowski - AGH University of Science and Technology, Kraków, Poland
Jan Szajnar - Silesian University of Technology, Gliwice, Poland
Michal Szucki - TU Bergakademie Freiberg, Germany
Tomasz Szymczak - Lodz University of Technology, Poland
Damian Słota - Silesian University of Technology, Gliwice, Poland
Grzegorz Tęcza - AGH University of Science and Technology, Kraków, Poland
Marek Tkocz - Silesian University of Technology, Gliwice, Poland
Andrzej Trytek - Rzeszow University of Technology, Poland
Mirosław Tupaj - Rzeszow University of Technology, Poland
Robert B Tuttle - Western Michigan University United States Seyed Ebrahim Vahdat - Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
Iveta Vaskova - Technical University of Kosice, Slovak Republic
Dorota Wilk-Kołodziejczyk - AGH University of Science and Technology, Kraków, Poland
Ryszard Władysiak - Lodz University of Technology, Poland
Çağlar Yüksel - Atatürk University, Turkey
Renata Zapała - AGH University of Science and Technology, Kraków, Poland
Jerzy Zych - AGH University of Science and Technology, Kraków, Poland
Andrzej Zyska - Czestochowa University of Technology, Poland



List of Reviewers 2021

Czesław Baron - Silesian University of Technology, Gliwice, Poland
Imam Basori - State University of Jakarta, Indonesia
Leszek Blacha - Silesian University of Technology, Gliwice
Poland Artur Bobrowski - AGH University of Science and Technology, Kraków, Poland
Danka Bolibruchova - University of Zilina, Slovak Republic
Pedro Brito - Pontifical Catholic University of Minas Gerais, Brazil
Marek Bruna - University of Zilina, Slovak Republic
Marcin Brzeziński - AGH University of Science and Technology, Kraków, Poland
Andriy Burbelko - AGH University of Science and Technology, Kraków, Poland
Alexandros Charitos - TU Bergakademie Freiberg, Germany
Ganesh Chate - KLS Gogte Institute of Technology, India
L.Q. Chen - Northeastern University, China
Zhipei Chen - University of Technology, Netherlands
Józef Dańko - AGH University of Science and Technology, Kraków, Poland
Brij Dhindaw - Indian Institute of Technology Bhubaneswar, India
Derya Dispinar - Istanbul Technical University, Turkey
Rafał Dojka - ODLEWNIA RAFAMET Sp. z o. o., Kuźnia Raciborska, Poland
Anna Dolata - Silesian University of Technology, Gliwice, Poland
Agnieszka Dulska - Silesian University of Technology, Gliwice, Poland
Maciej Dyzia - Silesian University of Technology, Poland
Eray Erzi - Istanbul University, Turkey
Przemysław Fima - Institute of Metallurgy and Materials Science PAN, Kraków, Poland
Aldona Garbacz-Klempka - AGH University of Science and Technology, Kraków, Poland
Dipak Ghosh - Forace Polymers P Ltd., India
Beata Grabowska - AGH University of Science and Technology, Kraków, Poland
Adam Grajcar - Silesian University of Technology, Gliwice, Poland
Grzegorz Gumienny - Technical University of Lodz, Poland
Gábor Gyarmati - Foundry Institute, University of Miskolc, Hungary
Krzysztof Herbuś - Silesian University of Technology, Gliwice, Poland
Aleš Herman - Czech Technical University in Prague, Czech Republic
Mariusz Holtzer - AGH University of Science and Technology, Kraków, Poland
Małgorzata Hosadyna-Kondracka - Łukasiewicz Research Network - Krakow Institute of Technology, Kraków, Poland
Jarosław Jakubski - AGH University of Science and Technology, Kraków, Poland
Krzysztof Janerka - Silesian University of Technology, Gliwice, Poland
Robert Jasionowski - Maritime University of Szczecin, Poland
Agata Jażdżewska - Gdansk University of Technology, Poland
Jan Jezierski - Silesian University of Technology, Gliwice, Poland
Karolina Kaczmarska - AGH University of Science and Technology, Kraków, Poland
Jadwiga Kamińska - Centre of Casting Technology, Łukasiewicz Research Network – Krakow Institute of Technology, Poland
Adrian Kampa - Silesian University of Technology, Gliwice, Poland
Wojciech Kapturkiewicz- AGH University of Science and Technology, Kraków, Poland
Tatiana Karkoszka - Silesian University of Technology, Gliwice, Poland
Gholamreza Khalaj - Islamic Azad University, Saveh Branch, Iran
Himanshu Khandelwal - National Institute of Foundry & Forging Technology, Hatia, Ranchi, India
Angelika Kmita - AGH University of Science and Technology, Kraków, Poland
Grzegorz Kokot - Silesian University of Technology, Gliwice, Poland
Ladislav Kolařík - CTU in Prague, Czech Republic
Marcin Kondracki - Silesian University of Technology, Gliwice, Poland
Dariusz Kopyciński - AGH University of Science and Technology, Kraków, Poland
Janusz Kozana - AGH University of Science and Technology, Kraków, Poland
Tomasz Kozieł - AGH University of Science and Technology, Kraków, Poland
Aleksandra Kozłowska - Silesian University of Technology, Gliwice Poland
Halina Krawiec - AGH University of Science and Technology, Kraków, Poland
Ivana Kroupová - VSB - Technical University of Ostrava, Czech Republic
Wacław Kuś - Silesian University of Technology, Gliwice, Poland
Jacques Lacaze - University of Toulouse, France
Avinash Lakshmikanthan - Nitte Meenakshi Institute of Technology, India
Jaime Lazaro-Nebreda - Brunel Centre for Advanced Solidification Technology, Brunel University London, United Kingdom
Janusz Lelito - AGH University of Science and Technology, Kraków, Poland
Tomasz Lipiński - University of Warmia and Mazury in Olsztyn, Poland
Mariusz Łucarz - AGH University of Science and Technology, Kraków, Poland
Maria Maj - AGH University of Science and Technology, Kraków, Poland
Jerzy Mendakiewicz - Silesian University of Technology, Gliwice, Poland
Hanna Myalska-Głowacka - Silesian University of Technology, Gliwice, Poland
Kostiantyn Mykhalenkov - Physics-Technological Institute of Metals and Alloys, National Academy of Science of Ukraine, Ukraine
Dawid Myszka - Politechnika Warszawska, Warszawa, Poland
Maciej Nadolski - Czestochowa University of Technology, Poland
Daniel Nowak - Wrocław University of Science and Technology, Poland
Mitsuhiro Okayasu - Okayama University, Japan
Agung Pambudi - Sebelas Maret University in Indonesia, Indonesia
Richard Pastirčák - University of Žilina, Slovak Republic
Bogdan Piekarski - Zachodniopomorski Uniwersytet Technologiczny, Szczecin, Poland
Bogusław Pisarek - Politechnika Łódzka, Poland
Seyda Polat - Kocaeli University, Turkey
Hartmut Polzin - TU Bergakademie Freiberg, Germany
Alena Pribulova - Technical University of Košice, Slovak Republic
Cezary Rapiejko - Lodz University of Technology, Poland
Arron Rimmer - ADI Treatments, Doranda Way, West Bromwich West Midlands, United Kingdom
Iulian Riposan - Politehnica University of Bucharest, Romania
Ferdynand Romankiewicz - Uniwersytet Zielonogórski, Zielona Góra, Poland
Mario Rosso - Politecnico di Torino, Italy
Jaromír Roučka - Brno University of Technology, Czech Republic
Charnnarong Saikaew - Khon Kaen University, Thailand
Mariola Saternus - Silesian University of Technology, Gliwice, Poland
Karthik Shankar - Amrita Vishwa Vidyapeetham , Amritapuri, India
Vasudev Shinde - Shivaji University, Kolhapur, Rajwada, Ichalkaranji, India
Robert Sika - Politechnika Poznańska, Poznań, Poland
Jerzy Sobczak - AGH University of Science and Technology, Kraków, Poland
Sebastian Sobula - AGH University of Science and Technology, Kraków, Poland
Marek Soiński - Akademia im. Jakuba z Paradyża w Gorzowie Wielkopolskim, Poland
Mateusz Stachowicz - Wroclaw University of Technology, Poland
Marcin Stawarz - Silesian University of Technology, Gliwice, Poland
Andrzej Studnicki - Silesian University of Technology, Gliwice, Poland
Mayur Sutaria - Charotar University of Science and Technology, CHARUSAT, Gujarat, India
Maciej Sułowski - AGH University of Science and Technology, Kraków, Poland
Sutiyoko Sutiyoko - Manufacturing Polytechnic of Ceper, Klaten, Indonesia
Tomasz Szymczak - Lodz University of Technology, Poland
Marek Tkocz - Silesian University of Technology, Gliwice, Poland
Andrzej Trytek - Rzeszow University of Technology, Poland
Jacek Trzaska - Silesian University of Technology, Gliwice, Poland
Robert B Tuttle - Western Michigan University, United States
Muhammet Uludag - Selcuk University, Turkey
Seyed Ebrahim Vahdat - Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
Tomasz Wrobel - Silesian University of Technology, Gliwice, Poland
Ryszard Władysiak - Lodz University of Technology, Poland
Antonin Zadera - Brno University of Technology, Czech Republic
Renata Zapała - AGH University of Science and Technology, Kraków, Poland
Bo Zhang - Hunan University of Technology, China
Xiang Zhang - Wuhan University of Science and Technology, China
Eugeniusz Ziółkowski - AGH University of Science and Technology, Kraków, Poland
Sylwia Żymankowska-Kumon - AGH University of Science and Technology, Kraków, Poland
Andrzej Zyska - Czestochowa University of Technology, Poland



List of Reviewers 2020

Shailee Acharya - S. V. I. T Vasad, India
Mohammad Azadi - Semnan University, Iran
Rafał Babilas - Silesian University of Technology, Gliwice, Poland
Czesław Baron - Silesian University of Technology, Gliwice, Poland
Dariusz Bartocha - Silesian University of Technology, Gliwice, Poland
Emin Bayraktar - Supmeca/LISMMA-Paris, France
Jaroslav Beňo - VSB-Technical University of Ostrava, Czech Republic
Artur Bobrowski - AGH University of Science and Technology, Kraków, Poland
Grzegorz Boczkal - AGH University of Science and Technology, Kraków, Poland
Wojciech Borek - Silesian University of Technology, Gliwice, Poland
Pedro Brito - Pontifical Catholic University of Minas Gerais, Brazil
Marek Bruna - University of Žilina, Slovak Republic
John Campbell - University of Birmingham, United Kingdom
Ganesh Chate - Gogte Institute of Technology, India
L.Q. Chen - Northeastern University, China
Mirosław Cholewa - Silesian University of Technology, Gliwice, Poland
Khanh Dang - Hanoi University of Science and Technology, Viet Nam
Vladislav Deev - Wuhan Textile University, China
Brij Dhindaw - Indian Institute of Technology Bhubaneswar, India
Derya Dispinar - Istanbul Technical University, Turkey
Malwina Dojka - Silesian University of Technology, Gliwice, Poland
Rafał Dojka - ODLEWNIA RAFAMET Sp. z o. o., Kuźnia Raciborska, Poland
Anna Dolata - Silesian University of Technology, Gliwice, Poland
Agnieszka Dulska - Silesian University of Technology, Gliwice, Poland
Tomasz Dyl - Gdynia Maritime University, Poland
Maciej Dyzia - Silesian University of Technology, Gliwice, Poland
Eray Erzi - Istanbul University, Turkey
Katarzyna Gawdzińska - Maritime University of Szczecin, Poland
Sergii Gerasin - Pryazovskyi State Technical University, Ukraine
Dipak Ghosh - Forace Polymers Ltd, India
Marcin Górny - AGH University of Science and Technology, Kraków, Poland
Marcin Gołąbczak - Lodz University of Technology, Poland
Beata Grabowska - AGH University of Science and Technology, Kraków, Poland
Adam Grajcar - Silesian University of Technology, Gliwice, Poland
Grzegorz Gumienny - Technical University of Lodz, Poland
Libor Hlavac - VSB Ostrava, Czech Republic
Mariusz Holtzer - AGH University of Science and Technology, Kraków, Poland
Philippe Jacquet - ECAM, Lyon, France
Jarosław Jakubski - AGH University of Science and Technology, Kraków, Poland
Damian Janicki - Silesian University of Technology, Gliwice, Poland
Witold Janik - Silesian University of Technology, Gliwice, Poland
Robert Jasionowski - Maritime University of Szczecin, Poland
Jan Jezierski - Silesian University of Technology, Gliwice, Poland
Jadwiga Kamińska - Łukasiewicz Research Network – Krakow Institute of Technology, Poland
Justyna Kasinska - Kielce University Technology, Poland
Magdalena Kawalec - Akademia Górniczo-Hutnicza, Kraków, Poland
Angelika Kmita - AGH University of Science and Technology, Kraków, Poland
Ladislav Kolařík -Institute of Engineering Technology CTU in Prague, Czech Republic
Marcin Kondracki - Silesian University of Technology, Gliwice, Poland
Sergey Konovalov - Samara National Research University, Russia
Aleksandra Kozłowska - Silesian University of Technology, Gliwice, Poland
Janusz Krawczyk - AGH University of Science and Technology, Kraków, Poland
Halina Krawiec - AGH University of Science and Technology, Kraków, Poland
Ivana Kroupová - VSB - Technical University of Ostrava, Czech Republic
Agnieszka Kupiec-Sobczak - Cracow University of Technology, Poland
Tomasz Lipiński - University of Warmia and Mazury in Olsztyn, Poland
Aleksander Lisiecki - Silesian University of Technology, Gliwice, Poland
Krzysztof Lukaszkowicz - Silesian University of Technology, Gliwice, Poland
Mariusz Łucarz - AGH University of Science and Technology, Kraków, Poland
Katarzyna Major-Gabryś - AGH University of Science and Technology, Kraków, Poland
Pavlo Maruschak - Ternopil Ivan Pului National Technical University, Ukraine
Sanjay Mohan - Shri Mata Vaishno Devi University, India
Marek Mróz - Politechnika Rzeszowska, Rzeszów, Poland
Sebastian Mróz - Czestochowa University of Technology, Poland
Kostiantyn Mykhalenkov - National Academy of Science of Ukraine, Ukraine
Dawid Myszka - Politechnika Warszawska, Warszawa, Poland
Maciej Nadolski - Czestochowa University of Technology, Częstochowa, Poland
Konstantin Nikitin - Samara State Technical University, Russia
Daniel Pakuła - Silesian University of Technology, Gliwice, Poland


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