DOI: 10.52150/2522-9117-2024-38-760-770

Sirenko Kateryna Adolfivna, Ph. D. (Tech.), Researcher, Physico-technological Institute of Metals and Alloys of the National Academy of Sciences of Ukraine, Akademika Vernadskoho Blvd, 34/1, Kyiv, 03142, Ukraine. ORCID: 0000-0003-2613-8094. E-mail: thermoexp.metal@gmail.com

SAMPLERS FOR THERMAL EXPRESS ANALYSIS OF IRON-CARBON ALLOYS

Abstract. The article analyses known methods and means of express control of temperature and chemical composition of iron-carbon alloys in foundry production. It is shown that at the current stage of development of foundry production, the most effective method for express analysis of the chemical composition and properties of molten iron is thermal derivative analysis, which involves obtaining a digital cooling curve of a selected sample (test) of molten iron and comparing it with reference cooling curves of similar type of iron from their database, which defines the chemical composition and properties of castings based on the results of previous studies. The reliability of the express analysis of smelted cast iron depends to a large extent on the reliability of the procedure for sampling the metal melt using special samplers. The advantages and disadvantages of samplers for taking samples from the induction furnace melt are identified. The design of an immersion sampler developed by the Physical and Technological Institute of Metals and Alloys of the National Academy of Sciences of Ukraine and its advantages over samplers of the same purpose, which are widely used in the practice of foundries, are presented in detail. The created and verified system and installation for thermal derivative analysis, the main element of which is the mentioned immersion sampler, are considered in detail. Promising areas of application and ways to improve the methods of thermal analysis of liquid cast iron quality are considered.

Keywords: foundry, iron-carbon alloys, melt, chemical composition, thermal express analysis, liquid metal samplers.

DOI: https://doi.org/10.52150/2522-9117-2024-38-760-770

For citation: Sirenko, K. A. (2024). Samplers for thermal express analysis of iron-carbon alloys. Fundamental and applied problems of ferrous metallurgy, 38, 760-770. https://doi.org/10.52150/2522-9117-2024-38-760-770

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