Quality Control over Joints of Rubber-Textile Conveyer Belts by the Use of Thermovisor
The method of the direct control over joints of rubber-textile conveyer belts by the use of thermovisor TESTO 875-1 (Germany) of high resolution was aprobated. The method is based on the difference between the heat conductivity of the materials in the region of defects and in the other areas. This difference results in temperature differences of defect and the other areas of conveyer belts under heating or cooling and measured by temperature detectors or strikingly illustrated by Thermovisor. Conveyer belts 500mm wide (from fabric ТК-200) with widespread artificial defects were tested. The belts with defects were heated in vulcanizing press from +10 to +70ºС or cooled from +90 to +70ºС. The belts with defects in greasing were heated from -10 to +70 ºС. The temperature differences between defect and the other places was from 15 to 4ºС. Later on the control over joints in the service of rubber-textile conveyer belts, especially in the most demanded conveyers, is supposed.