Визначення впливу вмісту рідкого скла в наповнювачі чавунних і сталевих литих модулів на показники його стійкості до пробивання
The article investigates the effect of sodium silicate content on the penetrability of liquid glass sand fillers integrated into cast iron and steel shells obtained by lost foam casting (LFC). Samples with a sodium silicate content of 4 to 16 g per 100 g of quartz sand were produced for testing usin...
Збережено в:
| Дата: | 2026 |
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| Автори: | , , , , |
| Формат: | Стаття |
| Мова: | Українська |
| Опубліковано: |
Physico-technological Institute of Metals and Alloys
2026
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| Теми: | |
| Онлайн доступ: | https://www.metalsandcasting.com/index.php/mcu/article/view/326 |
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| Назва журналу: | Metal and Casting of Ukraine |
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Репозитарії
Metal and Casting of Ukraine| Резюме: | The article investigates the effect of sodium silicate content on the penetrability of liquid glass sand fillers integrated into cast iron and steel shells obtained by lost foam casting (LFC). Samples with a sodium silicate content of 4 to 16 g per 100 g of quartz sand were produced for testing using a laboratory drop hammer according to a method adapted for evaluating the knock-out properties of molding sands. It was found that the penetration work increases with increasing sodium silicate con- tent. For cast iron shells, a significant increase in resistance to penetration begins at a sodium silicate content of 9.1 %, while for steel shells – from 12.3 %. The transition layer between the metal and the filler in cast iron samples is 2–4 times thicker (1.5–4.0 mm) than in steel samples (0.5–1.6 mm), which is explained by the better fluidity of cast iron and higher adhesion of the silicate phase to cast iron. At the same time, the microstructure and microhardness of the transition layer do not depend on the sodium silicate content. For the "cast iron – liquid glass filler" system, a sodium silicate content of 12–14 g per 100 g of sand is recommended, and for the "steel – liquid glass filler" system – 14–16 g. The obtained results allow using the liquid glass filler as an effective substitute for part of the metal in cast modules of protective and load-bearing structures. |
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| DOI: | 10.15407/steelcast2026.02.008 |