2results about How to "Solve Welding Problems" patented technology

The application discloses a kind of open roof rail vehicle body structure, including side wall, underframe, upper floor and staircase, the two sides of upper floor are connected with side wall, the lower end of staircase is connected to underframe, the upper end of staircase is connected to upper floor;Side wall, staircase and upper floor are all used profile structure, upper floor, staircase all include upper panel, lower panel and rib plate, rib plate is connected with upper panel, lower panel simultaneously, the lower panel of upper floor is welded and connected with side wall, the upper panel of upper floor is welded and connected with side wall by first connecting plate;Horizontal direction is extended on side wall and welded and fixed with backing plate, backing plate is used to support the lower panel of staircase.The application effectively solves the welding problem of staircase and underframe, side wall, and staircase is welded simply, and the stiffness and strength are sufficient, and is not easy to deform;Meanwhile, the application also avoids staff to side wall and upper floor in the lower of upper floor and upward welding, is favorable to guarantee the welding quality.

The present application relates to the technical field of steel pipe defect detection, and particularly relates to a defect identification method for steel pipe manufacturing, comprising: acquiring steel pipe surface weld image data and determining a weld appearance index according to the image data, wherein the image data comprises a weld width, a weld excess height and a undercut depth; determining the weldability of the steel pipe according to the weld appearance index, determining the reason for unqualified welding according to the average undercut depth of the weld under the condition of unqualified welding; determining an ultrasonic detection strategy according to the defect corresponding rate of the weld width and the weld excess height under the condition of qualified welding, and acquiring a defect characteristic value inside the weld through ultrasonic detection; determining the weldability of the steel pipe manufacturing according to the defect characteristic value, and determining whether the steel pipe meets the preset standard according to the defect area proportion under the condition of unqualified steel pipe manufacturing. The present application improves the accuracy and efficiency of steel pipe defect identification.