Application of Line Scanning DR Image System to Pipe Ends of SSAW Pipe

A new type,high frequency inspection method to replace the existed X-rays directed through the weld material,in order to create a suitable image on radiographic film is badly needed due to the continuously requirement,to improve the weld seams and surface quality of welded pipes through the of grade is more and more higher,pipe size is more as well as wall thickness is more and more thicker when design for global oil and gas long distance pipeline.Based on DR direct digital image technology of detector array for a new type X ray digital image system to weld seams at pipe ends of spiral submerged arc welded pipe,a new type line array detector is adopted by means of making the system has more higher inspection sensitivity and space definition and carrying out real-time dynamic inspection to welded pipe,and to the inspected image to make transfer of positive/negative,magnify and reduce the image dynamic inspection to welded pipe.Through software making transfer of positive/negative to the inspected image,magnify and reduce the image and intensify psendo-color,and so on in convenient for inspector to identify the defects.The inspection process operates simple and finds the defects position exactly,hence it increases the efficiency of inspection and reduces inspection cost and can fully replace the traditional inspection methods of X ray film and image intensifier and offer a prominent economic and social benefit to the enterprise and has broad popularizing prospect.