Automated, Fluorescent Liquid Penetrant Inspection on Serial Workpieceswith High Throughput and High Process Reliability

Speaker:
Deutsch, K.W.A.; KARL DEUTSCH Pruef- und Messgeraetebau GmbH + Co KG; Germany

Authors:
Deutsch, K.W.A.; KARL DEUTSCH Pruef- und Messgeraetebau GmbH + Co KG; Germany
Goerz, O.; KARL DEUTSCH Pruef- und Messgeraetebau GmbH + Co KG; Germany
Ringvall, T.; KARL DEUTSCH Nordiska AB, Västerås; Sweden
Robens, S.; KARL DEUTSCH Pruef- und Messgeraetebau GmbH + Co KG; Germany

ID: ECNDT-0558-2018
Session: Transportation, railway & automotive 2
Room: R2
Date: 2018-06-13
Time: 15:20 - 15:40

In a first example a semi-automated highly flexible system is described which can be used for a broad variety of components. Cast workpieces for power generation in varying sizes and geometries were specified in the duty book. It should be possible to use optionally two fluorescent penetrants of different sensitivity. During the whole inspection process the components are placed in baskets and are pushed manually from station to station. The pneumatic lowering and lifting of the baskets at each station is automated. Each step of the process is started via pushbuttons and is then executed automatically. This ensures the reproducibility of the test results. Because of the broad spectrum and the sometimes only low number of workpieces, the process steps for penetrant removal and developer application are designed as manual stations. This enhances the flexibility of the whole system in view of future workpieces.
The second example describes a fully automated system, optimized for maximum throughput with a high level of automation and low testing costs per workpiece. Stainless steel forgings for the automotive industry shall be tested with high sensitivity for surface cracks. At the loading station the components are placed in workpiece holders that are optimized for the components geometry. Once the workpiece holder is inserted manually the system takes over control of the transport for the entire testing line.
A third example shows a large semi-automated testing system where an oval crane runway is used for the workpiece handling.