The Method of Inoculation of High-Quality Grey Cast Iron Intended for Massive Castings for Bottom and Distance Plates as Well Counterweights Manufactured as Vertical Castings

• Autorzy: Guzik Edward , Kopyciński Dariusz , Ziółko A. , Szczęsny Andrzej

Identyfikatory

DOI

10.24425/amm.2023.141512

• Języki publikacji: EN

Abstrakty

EN

The technology of producing castings of high-quality inoculated cast iron with flake graphite particles in the structure is a combination of the melting and inoculation process. Maintaining the stability of the strength and microstructure parameters of this cast iron is the goal of a series of studies on the control of graphitization and austenitic inoculation (increasing the number of primary austenite dendrites), and which affects the type of metal matrix in the structure. The ability to graphitize the molten alloy decreases with its holding in the melting furnace more than an hour. The tendency to crystallize large dendritic austenite grains and segregation of elements such as Si, Ni and Cu reduce the ductility properties of this cast iron. The austenite inoculation process may introduce a larger number of primary austenite grains into the structure, affecting the even distribution of graphite and metal matrix precipitation in the structure. Known inoculation effects the interaction (in low mass) of additives: Sr, Ca, Ba, Ce, La, produces MC₂ carbide). Addition of Fe in the inoculant influences the number and shape of austenite dendrites. Hybrid modification combines the effects of these two factors. The introduction of nucleation sites for the graphite eutectics and primary austenite grains result in the stabilization of the cast iron microstructure and an increase in mechanical properties. The obtained test results set the direction for further research in this area in relation to the production of heavy plate castings in vertical and horizontal pouring.

Słowa kluczowe

EN

high-quality cast iron; heavy castings; massive casting; graphitizing inoculation; hybrid inoculation

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2023
• Tom: Vol. 68, iss. 1
• Strony: 359--368
• Opis fizyczny: Bibliogr. 21 poz., fot., rys., tab., wykr.

Twórcy

autor

Guzik Edward

• AGH University of Science and Technology, Department of Engineering of Cast Alloys and Composites, Faculty of Foundry Engineering, Al. Mickiewicza 30, 30-059 Krakow, Poland

• https://orcid.org/0000-0002-4449-532X

autor

Kopyciński Dariusz

• AGH University of Science and Technology, Department of Engineering of Cast Alloys and Composites, Faculty of Foundry Engineering, Al. Mickiewicza 30, 30-059 Krakow, Poland

• https://orcid.org/0000-0003-1651-2740

autor

Ziółko A.

• Krakodlew S.A., 1 Ujastek St., 30-969 Krakow, Poland

autor

Szczęsny Andrzej

• AGH University of Science and Technology, Department of Engineering of Cast Alloys and Composites, Faculty of Foundry Engineering, Al. Mickiewicza 30, 30-059 Krakow, Poland

• https://orcid.org/0000-0002-3464-9655

Bibliografia

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Uwagi

1. The publication was created during the implementation of the project RPMP.01.02.01-12-0055/18 in Foundry Krakodlew S.A. in Cracow financed by the Regional Operational Program of the Małopolskie Voivodeship, Poland.

2. Błędna numeracja bibliografii.

3. Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).