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Abstract
The article covers a mathematical model of a temperature distribution in the three-layer metal composite structures when grinding their working layers. The computer program TEMSS, created on the basis of thermal models, allows calculation of all the characteristics of the temperature distribution in the layers of the metal composite structure, depending on the system structure, material properties of its layers, grinding and machining conditions, and duration. The work establishes the adequacy of the developed mathematical model of the temperature distribution when grinding the metal composite systems. The article covers the analysis of standard metal composite systems with Loctite, Chester molecular, and Devcon polymers on the basis of the temperature distribution model, revealing the influence of lamination on the nature of the temperature distribution. Critical temperatures are defined that determine the occurrence of thermal grinding defects in the metal composite system, including their dependencies on processing conditions and the system structure. Thus, it is found that when grinding a working steel layer of the composite system using the standard grinding conditions recommended in the reference handbooks for steel workpieces, the temperature in the working and polymer-composite layers, as a rule, exceeds the threshold values for these materials.
Highlights
In modern technical solutions, layered metal composite structures are used for aerospace technologies, in engineering, and metallurgical industries
A layered system on the basis of a metal and polymer composite materials (PCMs) is understood as a structure consisting of layers of metal and polymer composite materials
1.88 0.186 is represented by Loctite 641, and its thermal and physical characteristics correspond to line 10 of Table 3
Summary
In modern technical solutions, layered metal composite structures are used for aerospace technologies, in engineering, and metallurgical industries. A layered system on the basis of a metal and polymer composite materials (PCMs) is understood as a structure consisting of layers of metal and polymer composite materials. The basic material of the structure is metal. The working surfaces are formed by a system of layers made of polymer composite materials and metals. Such composite systems are described in [1, 2]. The simplest variant of a layered structure is the covering made of a polymer composite material described in [3, 4]
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