The company has developed a method for ultrasonic detection of inclusions in railway wheels applied in the technical field of railway wheel manufacturing and performance testing. Ultrasonic flaw detection is carried out on the rim tread respectively, and the detection surface with strong defect reflection signal is parallel to the length direction of the inclusions; 2) Cut the rim cross-section sample block containing inclusions, and use the wire-cut sampling block square bar, and the inclusions are in the sample block square bar Middle; 3) The square bar of the sample block is used as the sample, and the sample is subjected to particle shot peening; 4) The step load fatigue test is applied to the sample, and the initial load is lower than the fatigue limit of surface fatigue, under low load, to ensure fatigue Cracks initiate and propagate from inclusions. The method for ultrasonic detection of inclusions in railway wheels according to the invention can completely display the whole picture of inclusions found by ultrasonic flaw detection, and can accurately measure the size of defects.
The company has developed a method for ultrasonic detection of inclusions in railway wheels applied in the technical field of railway wheel manufacturing and performance testing. Ultrasonic flaw detection is carried out on the rim tread respectively, and the detection surface with strong defect reflection signal is parallel to the length direction of the inclusions; 2) Cut the rim cross-section sample block containing inclusions, and use the wire-cut sampling block square bar, and the inclusions are in the sample block square bar Middle; 3) The square bar of the sample block is used as the sample, and the sample is subjected to particle shot peening; 4) The step load fatigue test is applied to the sample, and the initial load is lower than the fatigue limit of surface fatigue, under low load, to ensure fatigue Cracks initiate and propagate from inclusions. The method for ultrasonic detection of inclusions in railway wheels according to the invention can completely display the whole picture of inclusions found by ultrasonic flaw detection, and can accurately measure the size of defects.
