Articulated test probe mechanism with fluid bearing in roll gap.

摘要

A nondestructive eddy current or ultrasonic articulated probe mechanism automatically detects rolling mill roll surface defects for use with a defect test system. The articulated probe mechanism is mounted on a traversing roll grinder oarriage, is automatically positioned over the test roll, and has a probe head with controlled fluid bearing, air or liquid, to automatically maintain probe head-to-test roll gap. One or multiple eddy current, or ultrasonic, probes in the head generate anomaly test signals which, together with a probe head temperature sensor signal, are suitable for processing in an appropriate test instrument.