据国内外的统计资料表明,在特种设备(锅炉、压力容器、压力管道等)失效事故中,焊缝是主要失效源。所以保证焊接质量,对特种设备的安全使用是至关重要的。众所周知,无损探伤是最终检验焊接质量的最有效的手段,为此,各国均制定了各种检验焊接质量的规程与标准,无损检测人员必须依据相关标准对受压元件的焊缝进行无损检测,以检查和验证焊缝的质量。而现在,随着市政基础设施工程建设的不断增加,对焊接质量的要求也越来越严 According to the statistics at home and abroad, the weld is the main source of failure in the failure of special equipment (boilers, pressure vessels, pressure pipes, etc.). So to ensure the welding quality, the safe use of special equipment is crucial. As we all know, non-destructive testing is the final test of the most effective means of welding quality, for which all countries have developed a variety of testing procedures and standards of welding quality, non-destructive testing personnel must be based on the relevant standards of non-destructive testing of welded joints, To inspect and verify the quality of the weld. Now, with the continuous construction of municipal infrastructure projects, the quality of welding is also getting more stringent