Foreign matter contamination is a manufacturing error commonly found in cables and harnesses. In this video, we will show you how this error occurs and introduce an inspection to prevent outflow.

Why does "Foreign matter contamination" occur?

When cables are routed to connectors, there is a possibility that foreign matter may get into. In some cases, foreign matter can cause electrical problems. In order to prevent contamination, it is first necessary to thoroughly implement 5S. Foreign matter can get into unexpectedly. Some are so small and fine that they are invisible to the eye. Tool maintenance is also important. Wires attached to cable strippers may get in during processing. Appropriate brightness in the work area makes it easier to notice foreign matters. It is also important to understand in which processes foreign matters are generated, and to consider when to reduce their generation and when to clean up. Assuming that foreign matters get into, testing is necessary to prevent outflow. Image inspection is a direct test for detecting foreign matters. However, its introduction is costly. It is currently difficult to introduce highly accurate inspections from all angles.