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The Perspective Materials for Friction Assemblies of Wood Industry Equipment

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E.A. Pamfilov, E.V. Alekseeva

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UDС

62-233:674.05

DOI:

10.17238/issn0536-1036.2015.4.113

Abstract

The significant disadvantage of modern machines and equipment of forest industry is the increased wear of sliding bearings. The distinctive operating characteristics of these friction units are the vibration, abrasive and chemically active environments, insufficient lubrication, in addition to a wide range and level of the applied loads. Thermal processes due to high pressure and friction velocity, and flow of some physicochemical processes under the action of tribotechnical environment influence on the details of machines. The usage of the heterogeneous polymer-metal materials which combine the positive properties of plastics (self-lubrication, no charging, corrosion resistance, plasticity) and metals (mechanical strength, hardness, heat-resistance) will improve the performance of bearings. The new heat-accumulating material that can be performed on the basis of various polymers, in particular, of wood, is seemed to be perspective. The usage of heat-accumulating fillers helps to improve the thermophysical properties of composite materials. This effect is achieved by increasing the amount of metal components and by the accumulation of thermal energy due to the heat absorption occurring during the phase transformations eutectoid or eutectic nature. In this case, the friction heat is partly diverted by the metallic inclusions due to their high thermal conductivity and partly spent on the melting of the fusible metal content of elements, thus further temperature increasing does not occur. So, the placement of the heat-accumulating elements with the fusible alloy inside in a modified wood increases the efficiency of the heat removal from the contact areas and lowers the temperature of the details. The implementation of mentioned recommendations can provide a significant increase of the reliability of the equipment of the forestry complex enterprises.

Authors

  • E.A. Pamfilov, Doctor of Engineering, Professor
  • E.V. Alekseeva, Assistant

    Bryansk State Engineering Technology Academy,
    Stanke Dimitrova pr., 3, Bryansk, 241037, Russia;
    e-mail: 
    pamfilov@bgita.ru

Affiliation

Bryansk State Engineering Technology Academy, Stanke Dimitrova pr., 3, Bryansk, 241037, Russia

Keywords

sliding friction units, metal-polymer materials, heat dissipated plastic materials, heat accumulating materials

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