Деякі особливості процесу структурування піщано-рідкоскляної суміші у паромікрохвильовому середовищі
State University «Odesa Polytechnic» (Odesa, Ukraine) Received 22.07.2021 UDK 621.74 The article presents the results of studies of the influence of the mass of liquid glass spent on the cladding of quartz sand, the mass of water in water charges and their location in the working space of the model-...
Збережено в:
| Дата: | 2023 |
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| Автор: | |
| Формат: | Стаття |
| Мова: | Ukrainian |
| Опубліковано: |
National Academy of Sciences of Ukraine, Physical-Technological Institute of Metals and Alloys of NAS of Ukraine
2023
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| Теми: | |
| Онлайн доступ: | https://plit-periodical.org.ua/index.php/plit/article/view/some-features-structuring-process-sand-liquidglass-mixture-steam |
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| Назва журналу: | Casting Processes |
Репозитарії
Casting Processes| Резюме: | State University «Odesa Polytechnic» (Odesa, Ukraine)
Received 22.07.2021
UDK 621.74
The article presents the results of studies of the influence of the mass of liquid glass spent on the cladding of quartz sand, the mass of water in water charges and their location in the working space of the model-rod equipment on the strength of the sand-liquid glass mixture structured by the method of steam-microwave hardening. The work used fresh water of technical purity, sodium water glass with a specific density of ρLG = 1.42 g/cm3 and a silicate modulus МSiO2 = 2.9, quartz sand with an average particle size of 0.23 mm and with a mass content of clay up to 0.1 %. Quartz sand was clad with water glass by mechanical mixing with water glass and air drying to a granular state. The structuring of the sand-liquid glass mixture was carried out by the method of steam-microwave curing in a microwave oven with a magnetron power of 700 W and a frequency of 2.45 GHz. It has been established that an increase in the strength of casting molds and cores made by the steam-microwave curing method is facilitated by both an increase in the mass of water glass used for cladding quartz sand and the mass of water in a water charge. In order to ensure the uniformity of strength throughout the body of casting molds and cores, the water charge should be located mainly in the lower and dead-end parts of the equipment used, taking into account the direction of movement of water vapor in relation to the places of its exit from the mixture during its structuring.
References
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