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首页> 外文会议>International Symposium on Digital Industrial Raidology and Computed Tomography >Qualification of two Tube Inspection Systems for High Quality in-Process Digital Radiographic Testing of Longitudinal Welded Tubes
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Qualification of two Tube Inspection Systems for High Quality in-Process Digital Radiographic Testing of Longitudinal Welded Tubes

机译：高品质焊接管高质量型数字放射线测试两种管检测系统的资格

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Similar to the medical radiographic technology, within the industrial radiographic technology a change from conventional radiographic inspections with X-ray films to digital radiographic technology using digital, high resolution line or array detectors as image producing systems takes place in the last years. This technology is increasingly used for process integrated fabrication inspection and is at this time subject of current standardisation procedures. The company Butting has put into operation in their new longitudinal welded tube production lines two fully automated inspection systems for radiographic testing of tubes with two different digital, high resolution array detectors. The digital X-ray image can be digitally saved and also be visualized on a monitor. With the radiographic facilities tube wall thicknesses from 4 to 90 mm can be tested by X-ray. By an annual inspection output of about 150,000 meters weld seam the inspection systems fulfil highest requirements to inspection quality and economic efficiency. TUV NORD EnSys Hannover has accompanied the initial operation of the digital radiographic facilities and qualified them in accordance with the draft standard DIN EN ISO 10893-7 and DIN EN ISO 17636-2. Within the qualification process the performance of the inspection systems concerning image quality, image sharpness and long-term stability were examined by means of the requirements of the draft standards. Therefore a concept for controlling and supervising image quality, performance and long-term stability in the way of periodical system monitoring was developed by company Butting and TUV NORD EnSys Hannover. This contribution shows the new digital radiographic facilities at company Butting and their performance in comparison to conventional radiographic inspection using X-ray films. Signal to noise ratio, image quality, basic spatial resolution and image unsharpness will be demonstrated and the compensation principle will be discussed in this context. With the help of representative quality indicators the detectability of typical weld seam flaws in comparison to X-ray film technology will be presented.
机译：与医学放射线技术类似，在工业放射线技术内，使用数字，高分辨率线或阵列探测器与X射线薄膜与数字放射线技术的传统放射线检查的变化，因为在过去几年中发生图像产生系统。该技术越来越多地用于工艺综合制造检查，并在此时间进行当前的标准化程序。该公司守护者已经在新的纵向焊管生产线上投入运行两个全自动检测系统，用于两种不同的数字高分辨率阵列探测器的管子射线照相检测。数字X射线图像可以数字保存，也可以在监视器上可视化。通过X射线可以通过4至90毫米的放射线摄影管壁厚度。通过年度检查产出约150,000米的焊缝接缝，检查系统满足检验质量和经济效益的最高要求。 Tuv Nord Ensys Hannover伴随着数字射线照相设施的初始操作，并按照标准DIN EN ISO 10893-7和DIN EN ISO 17636-2的初始操作。在资格处理过程中，通过标准草案的要求，检查了关于图像质量，图像清晰度和长期稳定性的检查系统的性能。因此，由Company Butting和Tuv Nord Ensys Hannover开发了一种用于控制和监督图像质量，性能和长期稳定性的控制和监测图像质量，性能和长期稳定性的概念。这一贡献显示了公司守露的新型数字射线照相设施及其性能与使用X射线薄膜的传统放射线检查相比。将证明对噪声比，图像质量，基本空间分辨率和图像未分辨率，并且将在此背景下讨论补偿原理。借助代表质量指标的帮助，将提出与X射线薄膜技术相比的典型焊缝缺陷的可检测性。

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