TZ Railway non-destructive inspection system

TZ3000 High Energy X-ray Nondestructive Testing System
Date:2020-06-11 Source:GRANPECT

TZ3000 high-energy non-destructive testing DR and CT scanning system can be used for rapid real-time detection of defects such as air holes, sand inclusions, cracks, and shrinkage holes in key parts of train bolsters and side frames.


System Overview:The system uses 9MeV electron linear accelerator as the ray source, the high-precision CT scanning mechanical system completes the scanning movement, and the data acquisition is completed through the CdWO4 crystal line array detector and the wide dynamic range low-noise electronic system. After data conversion and processing, the reconstruction is Detect DR images and tomographic images of the workpiece. 
System principle:
The ray source generates fan-shaped high-energy X-rays in a controlled state; the X-rays are attenuated after penetrating the workpiece to be inspected, and the different attenuation levels reflect the internal information of the workpiece; the detector and subsequent systems accept X-rays and convert them into digital signals; In the DR scanning process, the overall projection data is obtained through the translation of the workpiece. In the CT scanning process, the projection data is obtained from multiple angles through the rotation of the workpiece; the acquired projection data is processed and reconstructed to obtain the DR/CT digital image .


 Scan mode: three-generation CT scan, DR scan;
 Main performance indicators:
  1. Detect the workpiece range
      Maximum diameter: ≤Φ830mm
      Effective detection length: ≤2500mm
      Maximum mass: ≤1500Kg
  2. Three-generation CT scan
      Spatial resolution: ≥1.5Lp/mm
       Density resolution: better than 0.5%
       Tomography time: Three generations of CT: 1-7min/slice
       Reconstruction image matrix: 512×512 ~ 4096×4096
       Cutting thickness: 5mm
    3. DR scan
          DR sensitivity: not less than 1% (linear image quality meter)