Q. We are having issues with plug loss and leakage during coating. Rework is expensive – how can we mitigate this?
A. Excellent question! There are many factors that influence plug loss or leakage. Here are some recommendations for avoiding plug loss, leakage and rework.
Use the correct plug size
Incorrect plug size selection issues are surprisingly common, especially when manufacturers only convey hole or thread sizes to the purchasing department. In immersion or heat cycles, building pressure can trap large air pockets. If you do not select plugs with this problem in mind, a “perfect fit” on paper may be the wrong choice, and a slightly oversized option may prove better. Alternatively, if a...