Structural Construction of Binders Based on Orthophosphoric Acid and Refractory Materials

Liutyi, R.V.; Liuta, D.; Petryk, Ivan

doi:10.1155/2021/6667769

Cited by 8 publications

(2 citation statements)

References 20 publications

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“…Almost all researchers agree on the importance of the comprehensive assessment of the thermal felds of the "casting-mold" system [30]. Tis is also relevant from the point of view of the creation and widespread use of new environmentally friendly materials for foundry molds, such as orthophosphates and pyrophosphates of silicon and zirconium [31], meta-phosphates and pyrophosphates of sodium [32], as well as binders synthesized from various aluminum-containing compounds [33], thermophysical properties of which difer from previously known ones. Te basis for the analysis of the entire system is a detailed and 2…”

Section: Introductionmentioning

confidence: 99%

Research Thermal Fields in the Crystallization Process of Steel Cast Parts

Liutyi

Petryk

Mogylatenko

et al. 2022

Advances in Materials Science and Engineering

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In foundry production, the duration of metal crystallization of the cast part, as well as the distribution of the thermal field, are described by systems of analytical equations. There are a number of methods for modeling these processes, but their theoretical basis was formed at the end of the twentieth century, and it needs to be updated and clarified. Therefore, the aim of our work is to develop a new analytical method for researching the distribution of thermal fields in cast parts during crystallization. For the first time, on the basis of own analytical and thermophysical developments, it developed the analytical method for researching the thermal field of the casting during crystallization and cooling, which is based on establishing the kinetics of cooling of the casting surface in the foundry mold, the advancement of the crystallization front from the surface to the center of the casting, and the distribution of temperatures in the solid and liquid parts of the casting. The method is expressed in a number of analytical formulas, each of which describes the specific thermal process that occurs in the casting. The developed analytical method was used to research the crystallization of the casting in a one-time sand mold, using the example of researching the thermal field of the cast part made of carbon steel with 0.25% C, hollow cylindrical shape, with the wall thickness of 100 mm. The developed analytical method for researching the thermal fields of cast parts is the analytical basis for the refinement of applied computer programs for modeling crystallization and cooling processes in foundry production.

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Section: Introductionmentioning

confidence: 99%

Research Thermal Fields in the Crystallization Process of Steel Cast Parts

Liutyi

Petryk

Mogylatenko

et al. 2022

Advances in Materials Science and Engineering

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“…(Received October 5, 2020; in final version, March 9, 2021) 1. INTRODUCTION Coatings and materials that contain metal oxides are widely used in various fields of science and technology [1-3], foundry [4][5][6], tools [7,8], and medicine [9][10][11]. Metal oxides [12][13][14] and nanooxides [15] are introduced into their composition to improve the performance properties of functional coatings.…”

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confidence: 99%

Thermophysical Properties of Glass-Ceramic Coatings of PbO–ZnO–B$_2$O$_3$ System Doped with Al$_2$O$_3$, SiO$_2$, and BaO Oxides

Kovbasiuk¹,

Duriagina²,

Mierzwiński³

et al. 2021

Metallofiz. Noveishie Tekhnol.

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The study of heat and electrophysical properties in the system 'stainless steel-glass-ceramic coating' is carried out. Insulating coatings based on the glass-ceramic material of the PbO-ZnO-B 2 O 3 system are synthesized on stainless steel substrates. The temperature dependences of the dielectric loss tangent and dielectric constant of the obtained functional coatings are investigated. The heat capacity, thermal diffusivity and thermal conductivity of the coatings are investigated using a laser flash analysis. These properties are then compared to ones of the substrates. By the method of differential thermal analysis, the optimal modes of heat treatment of glass-ceramic coatings are established. An optimal material with the best electrophysical properties is revealed. Possibilities of using dielectric coatings as functional layers for film heating elements are analysed.

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