In this paper,one X-ray image autotrack system for weld radiographic inspection is introduced, and itsworking principle is described from the hardware and software.
The relationship between basicity of graphitiferous slag and microstructurcs of both slag and weld metal arc investigated for the same electrode with cast iron.
During design and fabrication of offshore platform module, the shrink of wilding seam often causes interbedded crack on the main padeye plate and the column.
The crack initiates at stress concentration point in the root of weld, where has much more martenite, carbide and inclusion, and the serious hydrogen segregation.
For areas where the film density through the weld varies by more than from the density through the penetrameter, an additional penetrameter shall be used for those areas.
Please unload a part of the weldless steel tubes in Hatch No.3 hatchway for the present so as to the stevedores can use the opening to fill in the lower hold.