NM01C00704

Steel UT Reference Blocks are precisely manufactured standards used to calibrate ultrasonic flaw detectors and transducers. They are indispensable for setting up inspections, verifying system performance, and ensuring reliable flaw detection and sizing. These blocks are typically made from specific grades of steel with well-defined acoustic properties.  

Key Functions of Steel UT Reference Blocks:

• System Calibration: Establishing the time base and ensuring accurate distance measurements.

• Transducer Characterization: Determining the index point and refracted angle of angle beam probes.

• Sensitivity Adjustment: Setting appropriate gain levels for detecting flaws of various sizes.

• Resolution Evaluation: Assessing the ability of the system to distinguish between closely spaced reflectors.

• DAC/TCG Curve Generation: Creating Distance Amplitude Correction or Time Corrected Gain curves for accurate flaw sizing at different depths.  

Common Types of Steel UT Reference Blocks:

• Step Blocks: For basic linear calibration and sensitivity checks.

• Distance/Area Amplitude Blocks (DAA/FAA): Sets with flat-bottom holes for sensitivity and DAC/TCG.

• Notched Blocks: Containing various notches for angle beam calibration.

• IIW Blocks (Types 1 & 2): Multi-functional blocks for comprehensive system checks.  

• Navships Blocks: Specifically designed for angle beam probe calibration.

• Custom Blocks: Manufactured to specific requirements with artificial flaws.

Applications:

Steel UT reference blocks are used across all industries that employ ultrasonic testing, including:

• Aerospace

• Automotive

• Oil & Gas

• Power Generation

• Manufacturing

• Infrastructure Inspection