To Örebro University

In-situ evaluation (monitoring) of the wire drawing process is often performed manually in today’s industry which is a difficult task for the operator, requiring both time and experience. Previous research at Örebro university has been performed to identify and evaluate automated in-situ monitoring methods for the wire drawing process. From this research, several methods that can be applied for monitoring purposes have been identified. However, the advantage of using multiple sensors has not yet been investigated. How data from different monitoring sensor signals correlates with each other and if they can be combined to obtain a better understanding of the wire drawing process will be investigated and discussed in this work. Four different sensor signals; vibration, wire temperature, brightness of the wire surface and drawing force, will be compared and evaluated in wire drawing experiments where the process conditions are controlled. The results show that all the evaluated sensors indicate similar to deviations in the lubrication process, however, some problems could only be detected by some sensors. Using multiple sensors can have advantages in both detection and misrepresentation of problems and might be used to classify specific types of problems in the process.