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- Title
INFLUENCE OF MELT TREATMENT PARAMETERS ON THE CHARACTERISTICS OF MODIFIED CAST IRON IN THE METALLURGICAL INDUSTRY USING INTELLECTUAL ANALYSIS METHODS.
- Authors
Boldyrev, Denis; Dema, Roman; Latypov, Oleg; Zhilenkov, Anton; Emelianov, Vitalii; Nedelkin, Alexey
- Abstract
A study of the effect of holding the cast iron melt at temperatures of 1,300, 1,450 and 1,600°C for 20, 55 and 90 minutes on the structure and properties of cast iron in a liquid state and after crystallization was carried out. The studies were carried out on samples with a diameter of 30 mm; cast iron containing 3.61-3.75 % carbon, 1.9-2.4 % silicon, 0.03 % manganese, 0.081-0.084 % phosphorus, 0.031-0.039 % sulfur was poured into green-sand molds. The samples were cast from the original cast iron (unmodified), modified with ferrosilicon 75 GOST 1415-93 (FS75), rareearth metals (REM) and together with the REM+FS75 complex. The structure of cast iron was investigated by optical metallography, electron microscopy and X-ray structural analysis. An increase in the holding temperature and time of the cast iron melt leads to an increase in its hardness. An increase in temperature at a short holding time leads to an increase in strength in the entire investigated temperature range (1,300-1,600 °С). Holding for 90 minutes at a temperature of 1,450 °C corresponds to an extremum, after which, with a further increase in temperature, a sharp drop in strength is observed. The change in the toughness of cast iron is characterized in a similar way.
- Subjects
CAST-iron; IRON founding; LIQUID iron; IRON industry; FERROSILICON; METALLOGRAPHY
- Publication
Eastern-European Journal of Enterprise Technologies, 2021, Vol 110, Issue 12, p52
- ISSN
1729-3774
- Publication type
Article
- DOI
10.15587/1729-4061.2021.229642