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引言由于 X 射线和γ射线在焊缝检验中日益广泛的使用,因此有必要制定 ISO 通用推荐方法,作为这类检验的指南,以求获得令人满意的灵敏度。就焊缝射线检验的现状而言,为获得最佳结果,不必强制遵循严格的规程;最终结果取决于多种变量,诸如 X 射线设备或放射源的特性、胶片和屏的特性,以及焊缝的特征和可检性。然而,在一定范围内,可借助象质计(I.Q.I)这样一些器件来确定射线照相的质量,有关象质计的要求在 ISO/R1027,“射线照相象质计的原理和识别标记”中有明确规定。
INTRODUCTION Due to the increasing use of X-rays and gamma-rays in weld inspection, it is necessary to develop ISO general recommendations as a guide to such tests in order to obtain satisfactory sensitivity. In the light of the current status of weld ray tests, it is not mandatory to adhere to strict procedures for optimal results; the end result depends on a variety of variables such as the characteristics of the X-ray equipment or radioactive source, the characteristics of the film and the screen, The characteristics and seizure. However, to a limited extent radiographic quality can be determined with the help of a device such as the IQI, which is defined in ISO / R1027, Principles and Recognition Marks of Radiographic Photometers There are clear rules.