Calibration Blocks Of Enterprises with notches
Calibration blocks of enterprises with notches are used to configure the sensitivity and duration of scan of ultrasonic flaw detectors with contact angle beam transducers during testing flat sheets and pipes.
There are 3 kinds of calibration blocks:
1) Flat calibration block with a notch (Pic. A);
2) Calibration block as pipe with a notch for testing the transverse weld (Pic. B);
3) Сalibration block as pipe with a notch for testing the longitudinal weld and piping bend (Pic. C).
Flat calibration blocks are made with one or two notches, pipes – with two notches, which are situated at the internal and external surfaces.
Calibration blocks of enterprises are made of the same material as tested items. Heat treatment and surface quality of the blocks should be the same as tested objects.
As a rule, calibration blocks are produced in accordance with the specific normative document which governs:
- Dimensions of the calibration block
- Dimensions (width and depth) of notches
- Location of notches of the sample
- Number of notches