Temperature profile determination

摘要

Apparatus for determining the temperature profile of the surface being sprayed or otherwise treated, the apparatus comprising four electric arc spray guns ( 1 ) spraying molten steel. The guns ( 1 ) are connected to a six-axis industrial robot ( 2 ) which is adapted to move them over the surface of the ceramic substrate ( 3 ). The metal deposited by the spray builds up a metal shell referred to as the sprayform. The temperature profile of the sprayform surface ( 3 ) is recorded periodically by a thermal imaging camera ( 4 ) positioned directly above the surface ( 3 ). The apparatus includes a pruning filter for receiving each pixel of an image captured by the camera ( 4 ) and for applying at least a lower temperature limit to it so as to reject or disregard any pixels determined to have a temperature less than the lower temperature limit.