GE ROWA Brochure

Measurement & Control

Krautkramer Testing Machines

Full Body Volumetric Inspection Of Round Bars

ROWA-B Series

The ROWA-B is an ultrasonic phased array test system for detection of core and longitudinal surface/ subsurface ﬂaws in round bars.

The ultrasonic coupling is realized by a rotating water jacket, generated by tangentially ﬂowing coupling water (GE patent). Due to the compact dimensions of the mechanics, the ROWA-B system can be seamlessly integrated into an existing inspection line.

The bars are fed into the test chamber one by one on linear tracks by means of a guiding and transport device. A lifting/shifting table is required for installation of the test mechanism within the guiding and transport line.

ROWA-B test mechanics

Rotating water jacket

System Overview

System Electronics – Type VPA

Windows operating system Max. 20 kHz PRF in full parallel operation VME bus controller Parameter storage Automatic sensitivity check/adjustment Extensive monitoring functions, self-test and diagnostic support State of the art PC technology

Options

Pre-wetting system Water circulation system Guiding and transport device Shifting table

Test Speciﬁcations

AMS 2154 class AA Various end user speciﬁc standards

Technical Speciﬁcations

Longitudinal surface/subsurface ﬂaw testing Core ﬂaw testing Material dia. Ø 10 – 250 mm 100 % coverage Test speed up to 120 m/min

Dimension dependent guiding bushes at the inlet and outlet sides keep the water jacket within the test chamber and determine its free diameter. Rubber sealings prevent water leakage during test and remove the water from the test object’s surface after the test.

Depending on the application and object diameter, 4-18 phased array probes with up to 128 elements each are arranged circumferentially in a chamber.

For testing, a multiple number of neighbouring elements are controlled in parallel and form virtual probes. Due to sequential activation of virtual probes along the circumference, the ROWA-B achieves 100% coverage of the rotating sound beam without mechanical probe rotation. The system does not contain any moving parts which results in overall robustness and easy maintenance.

One key advantage of the ROWA-B is a short changeover time. Within a wide dimension range, no mechanical probe adjustment is necessary. Probes are adjusted electronically by recalling stored parameters – only the guiding bushes and the seals have to be changed according to the diameter of the material under test.

The ﬁeld proven and reliable GE ultrasonic electronics processes all signals and carries out a separate evaluation according to ﬂaw type and position.

GEIT-60024EN (04/13)

© 2013 General Electric Company. All Rights Reserved. Speciﬁcations are subject to change without notice. GE is a registered trademark of General Electric Company. Other company or product names mentioned in this document may be trademarks or registered trademarks of their respective companies, which are not afﬁliated with GE.