Inspection welding seam and dimension of cargo hatch cover.
Also, improve the overlapped length of the tail frame and the frame and change the welding seam into intermittent seam, therefore the frame strength can be effectively increased.
The application of this process can raise the productivity and reduce the welding costs, the quality is reliable and the welding seam forms good shape.
Ultrasonic defect detection inspection shall be carried out for welding seams and defects shall be removed. the excess weld metal of welding seam must be eradicated and abraded after welding.
The structure of the vacuum cup adopts self-locking connection mode, thereby having no welding seam and overall aesthetic property; moreover, the handle is firmly arranged without sloshing.
Any severe deficiency of welding seams surface like cracks, pores, slags is forbidden.
It also probed into the effects of the of multitube pass structure and of the welding seams between heat exchangers and tubesheets on the stress of the tubesheets.
