Technology of electron beam welding of 10CrMo9-10 steel with the specific quality requirements

Tuz, Lechosław; Kąc, S.; Sierakowski, Damian

doi:10.1016/j.mfglet.2022.12.001

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…Therefore, efforts should be made to identify potential areas of increased risk of failures before allowing operation for the next period [12]. Brodecki et al [24] and Tuz et al [25] also used light microscopy to observe the structure of steels operating at elevated temperatures for long periods of time. Jackiewicz et al [8] described structures obtained by heat treatment simulating the degradation conditions in industrial environments.…”

Section: Resultsmentioning

confidence: 99%

The Diagnostics of Power Boilers in Terms of Their Sustainability

Gwoździk,

Depciuch

2023

Sustainability

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Diagnosing steam pipelines is crucial because they are subjected to a water vapor environment and exhaust gases. Layers of oxides/deposits formed on steel utilized at elevated temperatures for long time periods have a significant impact on elements operating in power plants as well as in combined heat and power plants. Currently, these devices are an important topic of sustainable energy development. The aim of this work was to characterize the structure of the steel and of the oxides/deposit layer formed on the steam superheaters of power boilers and its impact on the durability of power equipment. The tests were carried out on 13CrMo4-5 steel utilized at various temperature and time parameters. In order to assess the degradation of the material, the following research methods were used: light microscopy, X-ray structural analysis, and infrared spectroscopy with Fourier transform. The use of the FTIR method in this type of diagnostics has deepened the existing analysis of oxide/sediment layers. The obtained test results showed that the kinetics of the corrosion process on steel being used for long periods at elevated temperatures is complex and depends, among others, on the element’s operating temperature, the operating time, and the flow medium.

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Section: Resultsmentioning

confidence: 99%

The Diagnostics of Power Boilers in Terms of Their Sustainability

Gwoździk,

Depciuch

2023

Sustainability

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“…Classic arc welding methods are used for the welding processes. When introducing hydrogen into gas, particularly around fittings, new automated welding techniques with high power density, such as electron beam or laser welding, are being utilized more regularly [35,36]. The welding area and the heat-affected zone could potentially be the weakest area due to crystallization conditions or as a result of thermal conductivity during welding [37].…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Changes in Natural Gas Supplies to Poland on the Amount of Hydrogen Produced in the SMR Reactor

Biały,

Żywczak,

Szurlej

2024

Energies

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Thanks to investments in diversifying the supply of natural gas, Poland did not encounter any gas supply issues in 2022 when gas imports from Russia were ceased due to the Russian Federation’s armed intervention in Ukraine. Over the past few years, the supply of gas from routes other than the eastern route has substantially grown, particularly the supplies of liquefied natural gas (LNG) via the LNG terminal in Świnoujście. The growing proportion of LNG in Poland’s gas supply leads to a rise in ethane levels in natural gas, as verified by the review of data taken at a specific location within the gas system over the years 2015, 2020, and 2022. Using measurements of natural gas composition, the effectiveness of the steam hydrocarbon reforming process was simulated in the Gibbs reactor via Aspen HYSYS. The simulations confirmed that as the concentration of ethane in the natural gas increased, the amount of hydrogen produced, and the heat required for reactions in the reformer also increased. This article aims to analyze the influence of the changes in natural gas quality in the Polish transmission network caused by changes in supply structures on the mass and heat balance of the theoretical steam reforming reactor. Nowadays, the chemical composition of natural gas may be significantly different from that assumed years ago at the plant’s design stage. The consequence of such a situation may be difficulties in operating, especially when controlling the quantity of incoming natural gas to the reactor based on volumetric flow without considering changes in chemical composition.

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Comparison of Linear Regression and Artificial Neural Network Models for the Dimensional Control of the Welded Stamped Steel Arms

et al. 2023

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The production of parts by pressing and subsequent welding is commonly used in the automotive industry. The disadvantage of this method of production is that inaccuracies arising during pressing significantly affect the final dimension of the part. However, this can be corrected by the choice of the technological parameters of the following operation—welding. Suitably designed parameters make it possible to partially eliminate inaccuracies arising during pressing and thus increase the overall applicability of this technology. The paper is focused on the upper arm geometry of a car produced in this manner. There have been two neural networks proposed in which the optimal welding parameters are determined based on the stamped dimensions and the desired final dimensions. The Levenberg–Marquardt back-propagation algorithm and the Bayesian regularised back-propagation algorithm were used as the learning algorithm for ANNs in multi-layer feed-forward networks. The outputs obtained from the neural networks were compared with a linear prediction model based on a on the design of experiment methodology. The mean absolute percentage error of the linear regression model on the entire dataset was 3 × 10−3%. A neural network with Levenberg–Marquardt back-propagation learning algorithm had a mean absolute percentage error of 4 × 10−3. Similarly, a neural network with a Bayesian regularised back-propagation learning algorithm had a mean absolute percentage error of 3 × 10−3%.

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Technology of electron beam welding of 10CrMo9-10 steel with the specific quality requirements

Cited by 3 publications

References 19 publications

The Diagnostics of Power Boilers in Terms of Their Sustainability

The Diagnostics of Power Boilers in Terms of Their Sustainability

The Influence of the Changes in Natural Gas Supplies to Poland on the Amount of Hydrogen Produced in the SMR Reactor

Comparison of Linear Regression and Artificial Neural Network Models for the Dimensional Control of the Welded Stamped Steel Arms

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