Detection process
◆ Comb scanning or pendulum scanning to detect flat-bottomed holes or grooves.
◆ The edge of the plate sheet adopts edge detection tracking method to detect flat-bottomed holes or grooves.
Detection standard
◆ API SPEC 5L 《Steel pipe specification of pipe line》(44 Edition)
◆ GB/T9711.1-1997《Technical delivery conditions of steel pipes for petroleum and natural gas industrial transportation （industries）, part 1》
◆ GB/T9711.2-1999《Technical delivery conditions of steel pipes for petroleum and natural gas industrial transportation （industries）, part 2》
◆ GB/T9711.3-2005《Technical delivery conditions of steel pipes for petroleum and natural gas industrial transportation （industries）, part 3》
◆ ISO3183-3《America pipe line specification》
◆ DEP31.40.20.37 (2011)《Pipe specification of shell pipe line》
◆ JB/T4730.3-2005《Non-destructive testing of pressure equipment– ultrasonic testing》
◆ RCC-M, ASME-Ⅲ, Ⅴ and Shell and relevant products’ technical supplementary agreement for ultrasonic flaw detection requirements.
The form of mechanical structure
◆ Gantry beam type (traditional type)
◆ It can also be customized according to the specific requirements of users
System software
1). Full information records to record waveform, real 1:1 restoration of defect position and length.
2). Realize the function of delamination thickness measurement, record at the same time, and automatically calibrate the sensitivity.
3). Automatically set the gate position and range according to the input thickness of the plate.
4). The automatic detection results can be stored and printed, and the detection records (detection curves and related data) can be stored on the storage medium. The industrial computer could permanently store the continuous detection records. When the test results need to be modified, password authorization was needed.
5). Adopt the gate tracking mode, which can effectively solve the misdiagnosis caused by the shaking of the plate.
Technical advantages
◆ Instrument parameters: Meet the European standard (EN12668-1) and factory inspection is according to this standard. Meanwhile, the European standard inspection certificate can be provided;
◆ The coupling channel is independent of the detection channel and can detect the amplitude of the bottom wave;
◆ Detection speed (i.e. repetition frequency): The detection speed is up to 60m/min (the technical index closely related to the detection speed is repetition frequency, which can reach 5KHz);
◆ Channel independence: the channels are strictly independent, and each channel has its own independent emission and reception timing control;
◆ Instrument scalability: the number of channels can be expanded according to the actual needs of users, such as adding additional channels when testing or meeting higher detection standards;
◆ The instrument adopts modular design, maintenance is convenient and quick;
◆ The system can scan the steel plate with 100% full coverage;
◆ Mechanical design, processing, installation and debugging: Experienced mechanical design team, trustworthy cooperative processing unit, standardized management of assembly and debugging, accumulated rich experience in similar projects, well-known brand of matching outsourcing parts;
◆ Control part: Using domestic and foreign well-known brand components, the control program is in accordance with the beat of customer's production line, fully protecting the safety of personnel and equipment, and the operation is humanized. The OP operation terminal displays the operation status and fault information.
Technical specifications
Plate width envelope: 1000~5000mm
Plate thickness envelope: 8~80mm
Production speed: max60m/min
Detection accuracy: FBH 6.0mm、FBH3.0mm 、FBH2.0mm
SNR: ≧10dB
Stability: ≤2dB (within 8H）
Omissive judgement rate: 0
Misdiagnosis: ≤1%
Marking accuracy: ±25mm
