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Abstract

The possibilities of producing ductile cast iron with the addition of 1 ÷ 3% of tungsten are presented. Tungsten from waste chips from mechanical processing was introduced into the liquid cast iron in the form of specially prepared cartridges. Correct dissolution of tungsten in the metal bath was found, and there were no casting defects in the alloy. The form of carbide precipitates in the microstructure of cast iron was determined and the influence of increasing tungsten content on the reduction of the number of graphite precipitates in the structure was determined. Impact tests show that this property degrades with increasing tungsten content as opposed to hardness which increases. It was found that the addition of tungsten from machining waste is a potential source of enrichment of cast iron with this element.
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Bibliography

[1] Volkov, A.N. (1975). Abrasive wear resistance of manganese cast iron with tungsten. Metal Science and Heat Treatment. 17, 412-414.
[2] Duarte, L.I., Lourenço, N., Santos, H., Santos, J. & Sá, C. Tungsten carbide powder inserts in ductile iron. Materials Science Forum. 455-456, 267-270.
[3] Kopyciński, D. (2009). Analysis of the structure of castings made from chromium white cast iron resistant to abrasive wear. Archives of Foundry Engineering. 9(4), 109-112.
[4] Podrzucki, Cz. (1991). Cast Iron. The Structure, Property, Application. T.1 and T.2, Kraków: Ed. ZG STOP. (in Polish).
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[7] Wołczyński, W., Guzik, E., Kania, B. & Wajda, W. (2010). Structures field in the solidifying cast iron roll. Archives of Foundry Engineering. 10(spec.1), 41-46.
[8] Studnicki, A. (2008). Effect of boron carbide on primary crystallization of chromium cast iron. Archives of Foundry Engineering. 8(1), 173-176.
[9] Myszka, D. (2021). Cast Iron–Based Alloys. In: Rana, R. (eds) High-Performance Ferrous Alloys. Springer, Cham., 153-210.
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Authors and Affiliations

D. Myszka
1
Justyna Kasińska
ORCID: ORCID
A. Penkul
1

  1. Department of Metal Forming and Foundry, Warsaw University of Technology, Narbutta 85, Warsaw, Poland

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