CHOICE OF THE OPTIMAL COMPOSITION OF NON-STICK COATINGS ACCORDING TO THE CONDITIONAL CRITERION OF FILLING MASS ACTIVATION
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http://www.rudmet.ru/journal/1922/article/32574/https://elib.sfu-kras.ru/handle/2311/143172
Автор:
Гильманшина, Т. Р.
Худоногов, С. А.
Лыткина, С. И.
Перфильева, Н. С.
Коллективный автор:
Институт цветных металлов и материаловедения
Политехнический институт
Базовая кафедра технологии золотосодержащих руд
Кафедра прикладной механики
Кафедра материаловедения и технологии обработки материалов
Кафедра инженерного бакалавриата CDIO
Дата:
2020Журнал:
CIS Iron and Steel ReviewКвартиль журнала в Scopus:
Q1Библиографическое описание:
Гильманшина, Т. Р. CHOICE OF THE OPTIMAL COMPOSITION OF NON-STICK COATINGS ACCORDING TO THE CONDITIONAL CRITERION OF FILLING MASS ACTIVATION [Текст] / Т. Р. Гильманшина, С. А. Худоногов, С. И. Лыткина, Н. С. Перфильева // CIS Iron and Steel Review. — 2020. — № 19. — С. 23-26Аннотация:
Development of the technique for choice of the optimal composition of non-stick coatings based on the filling
mass quality evaluation (taking into account the results of differential scanning calorimetry) is the aim of this
research. Non-stick coating for iron casting based on filling mass and polyvinyl butyral lacquer was taken for investigations
with the following relation – filling mass : polymer composition (2% polyvinyl butyral lacquer) = 1:1.
The mixture of natural and mechanically activated graphite with their different correlation was used as a filling
mass. Calculation of the conditional activation criterion displayed that the most optimal relation between selfdrying
coatings of natural and mechanically activated graphite in a filling mass is 50:50. It was established in this
case that increase of activated graphite in a filling mass of non-stick coatings leads to increase of density, toughness
and reduced strength. The most essential improvement of the properties is observed if the content of activated
graphite in a filling mass increased up to 50%. Additional increase of GLS-2A graphite content does not lead to
substantial improvement of the properties. The developed non-stick coatings were tested during fabrication of
the casting “Centrifugal soil pump. Internal pump shell” with mass 70 kg and size 510×615×128 mm, made of
320Kh20N (320Х20Н) iron. Use of non-stick coating on the base of the mixture of natural and mechanically
activated graphite (with their relation 50:50) is characterized by decrease of burning-on thickness by 1.8 times (on
the bottom surface of a casting) and by 1.9 times (on the side surface of a casting) in comparison with thickness
values for non-painted castings. The obtained results can be explained in the following way: if we apply the coating
containing 50% GLS-2 (ГЛС-2) and 50% GLS-2A (ГЛС-2А), large particles of natural graphite don’t penetrate
in mould pores and remain on the surface, what leads to decrease of burning-on on the casting surface.
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