Radiography Test of 9Ni Steel by Optimization Filter Method

For the 9Ni steel, the difference of nickel content in the basic metals and weld material results in the X-ray attenuation differences between the two metals, and the blackness of basic metal and weld metal parts is difficult to meet the requirements of conventional X-ray inspection, so it is difficult for inspecting it by using the conventional radiographic testing. It is suggested that the filtering of the radiation may solve this problem.