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This standard specifies the manual ultrasonic testing technology for fusion welded joints of metal materials with low ultrasonic attenuation (especially small scattering attenuation) and a base material thickness of no less than 8 mm. The temperature of the weld seam and its base material during testing is between 0~60 ℃. This standard is mainly applicable to full penetration welds of ferritic steel with both the base material and the weld seam. This standard specifies the ultrasonic values that rely on materials and is based on steel with longitudinal wave sound velocity of (5920 ± 50) m/s and transverse wave sound velocity of (3255 ± 30) m/s. This standard specifies four detection levels. Different detection levels correspond to different defect detection rates. Appendix A provides guidance on the selection of detection levels A.R and C - this standard specifies the general requirements for using detection level D only in special applications. Detection level D can only be used when specified in the specification. Special applications include non ferritic weld seam testing、 partial penetration weld seam testing、 weld seam testing using automated equipment、 and weld seam testing outside the temperature range of 0-60 ℃. This standard can be used for display evaluation or acceptance through any of the following techniques: a) evaluation based on display length and echo amplitude; b) Evaluation based on display characteristics and display size (using probe movement technology). It should be clearly defined which technology to use. The following normative references are essential for the application of this document. For dated references、 only the dated version applies to this document. For undated references、 the new version (including all modification orders) applies to this document. GB/T 5616 Application Guidelines for Non destructive Testing GB/T 9445 Non destructive Testing、 Personnel Qualification and Certification (GB/T 9445-2008、 ISO 9712:2005、 IDT) GB/T 12604、1 Non destructive Testing、 Terminology、 Ultrasonic Testing (GB/T 12604.1-2005、 ISO 55772000、 IDT) GB/T 19418 Steel Arc Welding Joints、 Guidelines for Quality Classification of Defects (GB/T 19418-2003. ISO 58171992. IDT) GB/T 19799.1 Non destructive Testing: Ultrasonic Testing、 Calibration Block 1 (GB/T 19799.1-2005、 ISO 24001972、 IDT) GD/T 19799.2 Non destructive Testing Ultrasonic Testing No. 2 Calibration Block (GB/T 19799、2-2012、 ISO 79632006、 IDT) GB/T 23905 Non destructive Testing Ultrasonic Testing Test Blocks GB/T 29711 Non destructive Testing of Welds: Ultrasonic Testing: Display Characteristics in Welds (ISO 232792010、 IDT) GR/T 29712、 Non destructive Testing of Welds、 Ultrasonic Testing、 Acceptance Levels (ISO 116662010、 MODJB/T 9214 Nondestructive Testing -- Testing Method for the Performance of A-type Pulse Reflection Ultrasonic Testing System JB/T10061A General Technical Conditions of Pulse Reflection Ultrasonic Flaw Detector Efficiency、 breaking industry limitations and bottlenecks、 and creating an innovative testing platform for the industry. If you have any needs、 please contact 18501763637
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