Capillary control (CT)
Capillary testing, also known as penetrant testing (abbreviated as CT), allows objects made of materials that do not dissolve and do not lose their properties when interacting with indicator liquids to be tested for defects.
Key Benefits of Capillary Control
PVC has a number of advantages, for which it is chosen for flaw detection:
- Capillary inspection makes it possible to detect cracks whose opening width is much smaller than the depth. It is not possible to detect such cracks with the naked eye. At the same time, it should be taken into account that the detection of discontinuities, the opening width of which is more than 0.5 mm, cannot be guaranteed during CT.
- CT is often used in cases where other methods (eg ultrasonic testing or x-ray testing) cannot be performed due to limited access.
- The list of materials that can be tested with capillary testing is very large. Ferrous and non-ferrous metals and their alloys, both ferromagnetic and non -ferromagnetic ; plastic, glass, ceramics and other materials suitable for the use of indicator liquids on them.
What do I need to provide for the CT?
To order a capillary control service, you need to provide the following information :
- Name of material (steel grade );
- Scope of control ;
- For welded joints of metal structures – length in linear meters.
- For welded joints of pipelines – diameter and number of joints.
- For base metal – area in square meters.
- For casting, forgings, rolled products and other products with complex geometry – a drawing, diagram or photograph.
- Sensitivity class or purpose of the control object.
Our specialists will determine the scope of control and the sensitivity class on their own! Do you have any questions? Give us a call and we’ll tell you more.
Submit your application