Розробка раціональної технології мікролегування та модифікування спокійних марок сталі порошкоподібними матеріалами
The article analyzes the efficiency of microalloying and modifying steel with various materials. The data of laboratory tests are presented, rational options for the technology of introducing microalloying and modifying additives into the ferrous melt are proposed in order to obtain high-quality met...
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| Date: | 2023 |
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| Main Authors: | , , , |
| Format: | Article |
| Language: | Ukrainian |
| Published: |
Physico-technological Institute of Metals and Alloys
2023
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| Subjects: | |
| Online Access: | https://www.metalsandcasting.com/index.php/mcu/article/view/4 |
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| Journal Title: | Metal and Casting of Ukraine |
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Metal and Casting of Ukraine| Summary: | The article analyzes the efficiency of microalloying and modifying steel with various materials. The data of laboratory tests are presented, rational options for the technology of introducing microalloying and modifying additives into the ferrous melt are proposed in order to obtain high-quality metal.
The purpose of this work is to study various options for microalloying and modifying a medium-carbon metal with the possibility of further optimizing the technological process and improving the quality of metal products.
Research methodology. A high-temperature experiment was carried out on the introduction of a microalloying additive both by the deposition method in the form of a lump material and by its injection in a powdery state. Injection of powdered ferroniobium was carried out both in pure form and using lime-based mixtures. An analysis of the technological parameters of experimental melts was carried out, which confirmed the advantage of injecting powdered reagents into the depth of the melt in comparison with the deposition method in the form of a lump.
Findings. Based on the results of the analysis of the technological parameters of experimental melts, rational modes of introducing powdered ferroniobium into a teeming ladle were determined, which simultaneously provides both a high degree of assimilation of powder particles by a liquid metal melt, and a high degree of oxygen removal together with lime.
Originality. According to the results of experimental heats, the features of the interaction of powder particles injected into a liquid metal melt were confirmed and refined.
Practical value. The technological parameters of the process of injection of powdery materials (ferroniobium, lime, fluorspar) have been determined, which, on the one hand, provide a high degree of assimilation of the microalloying element, and, on the other, significantly reduce the contamination of steel with oxide non-metallic inclusions, thereby reducing the total oxygen content in the steel. |
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