Scanning device USK-4T, USK-4TM complete with flaw detector tomographic UD4-TM is designed for ultrasonic testing of all-rolled wheels of freight and passenger car wheel sets in accordance with the requirements of RD 07.09-97 "Guide to comprehensive ultrasonic testing of car wheel sets" with changes № 1,2,3 (Annex to UD4-TM, Tomographic 2.1). Application of scanning device USK-4TM provides inspection of required areas in one turn with an ability to build up tomography and determine coordinates of a defective area.
During inspection A-scan of a current zone displays on the screen of a flaw detector, while all the probes included in the USK-4T, USK-4TM are working. Data on all the probes involved in the inspection process (probe tracing on the test piece) are displayed on the C-scan.
The operation algorithm of a specialized software module "UT Cars" (Appendix to UD4-TM, Tomographic 2.1) provides maximum possible automation of processes of setting, testing and data recording. Optionally a scanner USK-4T is equipped with eddy current sensor to identify factory branding to prevent wheel rejecting (false defect signaling in the area of branding). Thanks to the built-in multi-channel system, UT and ET probes operate simultaneously. This scanner modification was named USK-4TM.
Wheel rim – inspection from the rim inner side surface with shear waves when positioning a probe P121-2,5-40° below the running surface level and scanning around a circumference to detect internal discontinuities in rim main section;
Wheel flange – testing from the inner side surface of the rim by shear waves when installing the probe P121-2,5-50° below the level of running surface and scanning along the circumference to detect defects such as transverse cracks and internal discontinuities in a rim flange;
Surface area of the wheel disk – testing from the inner surface of a disk in the radial direction by shear waves when installing the probe P121-1,25-90° on the disk surface at a sufficient distance from the rim and scanning around the circumference to detect defects such as surface cracks in the pre-rim area of the disk.
type 511 (longitudinal cracks, shells, slivers, delamination, and non-metallic inclusions in a rim);
type 513 (transverse cracks on a rim running surface);
type 517 (cracked flange);
type 411 (cracks in the disc near a wheel rim).