Inspection of Cylinder Blocks Using Image Based Techniques

Bore holes of cylinder blocks have to be manufactured not alone with high dimensional accuracy, but also free from any surface defects. So appropriate NDT methods have to be applied, capable of detecting tiny cracks, pores etc. Additionally - in order to ensure a long operating life - the quality of the wear protection layer (with embedded Si-particles) has to be examined. The test system is fully integrated into the production line. Due to an automized inspection and by using imaging eddy current technique the system provides a high throughput (cycle time ~25 s / cylinder block) and a complete process visualization and quality documentation.