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Simulation of Heat Treatment of Carburization and Nitrocementation of 16MnCr5 Steel

E. Kantoríková P. Fabian M. Sýkorová

Archives of Foundry Engineering | 2021 | vo. 21 | No 4 | 97-102 | DOI: 10.24425/afe.2021.138686

Keywords cementation Nitrocementation heat treatment simulation

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Abstract

Simulation is used today in many contexts, such as simulating technology to tune or optimize performance, safety engineering, testing, training, education, and entertainment. In some industries, simulations are commonly used, but in heat treatment this is rather an exception. The paper compares the simulation of carburization and nitrocementation of 16MnCr5 steel with a practical application. The aim was to determine the applicability of chemical heat treatment simulation. We were looking for an answer to the question: to what extent can we rely on the technological design of heat treatment? The software designed the heat treatment technology. He drew the technological process of chemical-thermal treatment of 16MnCr5 steel. The thickness of the cementite layer was 1 mm and the nitrocementation 1.2 mm. Changes in mechanical properties were observed. Cementing, nitrocementing, hardness, microhardness, metallography, and spectral analysis were practically performed. This article describes the benefits of simulation, speed and accuracy of the process. The only difference was in determining the carbon potential. The simulation confirmed the practical use and its contribution in the technological process.

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Authors and Affiliations

E. Kantoríková

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ORCID:

P. Fabian

M. Sýkorová

Department of Technological Engineering, University of Žilina in Žilina, Univerzitná 8215/1, 010 26 Žilina, Slovakia

Compacted Graphite Iron with the Addition of Tin

Grzegorz Gumienny B. Kurowska P. Fabian

Archives of Foundry Engineering | 2020 | vol. 20 | No 3 | 15-20 | DOI: 10.24425/afe.2020.133323

Keywords Theory of crystallization compacted graphite iron Tin Cooling and derivative curves

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Abstract

The paper presents the effect of tin on the crystallization process, microstructure and hardness of cast iron with compacted (vermicular) graphite. The compacted graphite was obtained with the use of magnesium treatment process (Inmold technology). The lack of significant effect of tin on the temperature of the eutectic transformation has been demonstrated. On the other hand, a significant decrease in the eutectoid transformation temperature with increasing tin concentration has been shown. It was demonstrated that tin narrows the temperature range of the austenite transformation. The effect of tin on the microstructure of cast iron with compacted graphite considering casting wall thickness has been investigated and described. The carbide-forming effect of tin in thin-walled (3 mm) castings has been demonstrated. The nomograms describing the microstructure of compacted graphite iron versus tin concentration have been developed. The effect of tin on the hardness of cast iron was given.

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Authors and Affiliations

Grzegorz Gumienny

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B. Kurowska

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ORCID:

P. Fabian

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Simulation of Heat Treatment of Carburization and Nitrocementation of 16MnCr5 Steel

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Compacted Graphite Iron with the Addition of Tin

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Authors and Affiliations