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- Overview: MOBILE SINGLE-CUT RAILPHASED ARRAY FLAW DETECTOR (PA) Rail flaw detector with phased arrays for ultrasonic testing of welded joints of electric contact and aluminothermic rail welding (R50, R65, R75, UIC52, UIC60, etc.)
KALMAR 32+
Designed for acceptance or scheduled ultrasonic inspection of welded joints from electrocontact and aluminothermic welding of railway tracks, as well as metro rails. Continuous recording of local inspection results is provided in the form of defectograms, with real-time viewing during the inspection and subsequent decoding on a PC.
The inspection of welded joints is conducted while scanning using mechanized method, which involves the transverse movement of transducers along the weld from one rail bottom to the other, as well as the longitudinal movement of transducers along the rail surface on both sides of the weld axis over a defined distance.
Schematic representation of the path of individual rays when inspecting welded joints
Operating position
Transport position
A scanning scheme for joints welded by thermite and electric arc methods.
Electric arc welding
Thermite welding
Schematic representation of the paths of individual beams
The control parameters are set using the CO-3P instrument in a semi-automatic mode
KALMAR 32+ is a mechanical scanner with pre-installed phased array transducers, a flaw detection unit and a PC control tablet. All control functions are performed by the operator.The scanner is installed in the center of the weld joint. Using a mechanized drive, the transducers with phased arrays move along the generatrix of the weld along the entire rail cross-section (head, web, and rail base blades). The flaw detector software includes standard settings for testing welded joints: aluminothermic, electric contact and gas press welding in accordance with the current regulations.
In real time, a B scan can be seen on the flaw detector screen as a rail contour with defect parameters: coordinates, location in the weld section, conventional dimensions, detectability coefficient. Detailed analysis of all signals is available in A and S scans.
Information is presented in B and D scans
Defectoscopic data analysis is conducted in A and S scans. The determination of flaw dimensions and their coordinates is done automatically
Supplementary inspection is carried out using a manual detector of phased arrays with an entry angle range of 36-75 degrees. The inspection results are recorded in the form of defectograms in the protocol
Flaw joint map
