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Analysis of the Effect of the Excess Air Combustion Ratio on the Loss of Steel and Scale Adhesion in the Process of Heating the Steel Charge Including Changes in Technology

Wyleciał Tomasz, Boryca Jarosław, Urbaniak Dariusz

Archives of Metallurgy and Materials

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2023

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Vol. 68, iss. 3

1025--1028

EN

Both the steel loss to scale and the scale adhesion are very important parameters of the heating process. High values of steel loss (large thickness of the scale layer) reduce the heat exchange intensity in the furnace chamber, which results in higher energy consumption. A low adhesion value adversely affects the operation of heating furnaces, while too high value causes the scale to roll into a steel product and deteriorate its purity and quality. The paper presents the research methodology and the results of measurements of steel loss and scale adhesion. The effect of the excess air combustion ratio values on loss of steel and scale adhesion for constant furnace efficiency is discussed. This influence was described by mathematical dependencies. The tests were carried out for traditional technology and rational technology, enabling the reduction of steel losses to scale and energy consumption.

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Influence of Initial Charge Temperature and Furnace Exploitation on Steel Loss

Boryca Jarosław, Wyleciał Tomasz, Urbaniak Dariusz

Archives of Metallurgy and Materials

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2022

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Vol. 67, iss. 1

289--291

EN

Steel loss related to the formation of scale is a parameter that is of great importance in the charge heating process. The value of steel loss determined by the thickness of the scale layer affects the intensity of the heat transfer process in the heating furnace, but also constitutes a significant element in the heat-material balance. Reducing the loss of steel during charge heating has a positive effect on heat consumption and material losses, which is extremely important in the context of energy and resource savings, the main elements of sustainable development processes. The methodology of determining the loss of steel to scale in an industrial heating furnace is presented in the paper. The results of calculations for various charge temperatures at the entrance to the furnace are presented. The influence of furnace operating conditions on steel loss is discussed.

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Działalność Koła SITPH przy Politechnice Częstochowskiej w zakresie renowacji i utrzymania zabytków przemysłu hutniczego w Polsce

Boryca Jarosław, Wyleciał Tomasz, Knapiński Marcin

Hutnik, Wiadomości Hutnicze

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2020

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Vol. 87, nr 11-12

275--279

PL

W artykule przedstawiono historię udziału członków Koła SITPH przy Politechnice Częstochowskiej w renowacji i utrzymaniu zabytków Muzeum Zagłębia Staropolskiego w Sielpi Wielkiej. Jest ono poświęcone tradycjom polskiego przemysłu, a mieści się w budynku kompleksu metalurgicznego, który powstał w latach 1821-1841. Inicjatorami budowy byli wówczas Stanisław Staszic i książę Franciszek Ksawery Drucki-Lubecki. Muzeum dla zwiedzających otwarto po raz pierwszy w 1934 roku. Niestety podczas II Wojny Światowej obiekty kompleksu zostały zniszczone przez Niemców. Do planów odbudowy Muzeum powrócono na przełomie lat 50-tych i 60-tych XX wieku, a ostateczną decyzję o powtórnym uruchomieniu obiektu podjęto w 1962 roku. Od tego czasu pracownicy i studenci Politechniki Częstochowskiej, a także członkowie Koła SITPH rozpoczęli prace mające na celu przywrócenie sprawności możliwie wielu obiektów technicznych znajdujących się na terenie Muzeum. Wkład pracy tej grupy oraz pomoc finansowa wielu instytucji: rządowych, społecznych oraz przedsiębiorców doprowadziły do przywrócenia stanu obecnego Muzeum, w którym można zobaczyć sprawne urządzenia techniczne wykorzystywane przemysłowo w XIX wieku.

EN

The article presents the history of the participation of members of the SITPH Section at the Częstochowa University of Technology in the renovation and maintenance of monuments in the Museum of the Old Polish Basin in Sielpia Wielka. It is devoted to the traditions of Polish industry and is located in the building of the metallurgical complex, which was built in the years 1821-1841. The initiators of the construction at that time were Stanisław Staszic and Prince Franciszek Ksawery Drucki-Lubecki. The museum was first opened to visitors in 1934. Unfortunately, during the Second World War, the facilities of the complex were destroyed by the Germans. The plans to rebuild the Museum were resumed at the turn of the 1950s and 1960s, and the final decision to reopen the facility was made in 1962. Since then, employees and students of the Częstochowa University of Technology, as well as members of the SITPH Section have begun work aimed at restoring the efficiency of as many technical facilities located on the premises of the Museum as possible. The contribution of the work of this group and financial aid from many institutions: government, social and entrepreneurs led to the restoration of the present state of the Museum, where you can see operational technical devices used industrially in the nineteenth century.

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Research of the Impact of the Heating Rate on Adhesion of Scale Arising in the Process of Heating of the Steel Charge Before the Plastic Reworking

Boryca Jarosław, Kolmasiak Cezary, Wyleciał Tomasz, Urbaniak Dariusz, Kizek Jan

New Trends in Production Engineering

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2019

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Vol. 2, Iss. 2

301-311

EN

Before steel materials are subjected to an appropriate heat treatment, they must be preheated. During this process scale is formed, which can be a problem in the proper heat treatment of the steel charge. The preheating process of the steel charge is carried out under specific conditions – parameters. These conditions determine certain properties of scale. One of the most important issues in this context, important from the point of view of the potential removal of scale from the charge surface, is the correlation of the heating process temperature and the adherence of the scale to the steel substrate. The paper presents the results of such research and their discussion. In addition, the methodology for measuring the scale adhesion to steel substrate is presented. Mathematical relations endearing impact of heating rate on the scale adhesion have been developed.