| In high temperature brazing processes, the substrate wetting and the spreading of the filler metals into the joint gap is crucial for successful joining. In this work, a new approach for the assessment of the molten filler spreading behaviour is proposed based on an existing and well accepted wetting behaviour characterization method. This method is based on recording the spreading behaviour of the molten filler video-graphically, for which requires sophisticated hardware. For this reason, the remainder of the work is focused on providing the means to implement the proposed test considering the specific demands of the brazing process and the test method. Accordingly, a high temperature brazing facility with the capacity to monitor the test sample, has been designed, implemented and successfully tested to fit the purpose of the proposed test. The data collected from the preliminary tests were refined and analysed using image analysis techniques. The results of this analysis showed very promising potentials for the testing facility and the selected characterization method. |
